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Trojan.Win32.Alureon_c6a0ca6941


Gen:Trojan.Hibbit.1 (BitDefender), Rogue:Win32/FakeScanti (Microsoft), HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.FakeAV.IS (v) (VIPRE), Trojan.FakeAV.10503 (DrWeb), Gen:Trojan.Hibbit.1 (B) (Emsisoft), BackDoor-EXI.gen.ad (McAfee), Backdoor.Cycbot!gen9 (Symantec), Trojan.Win32.FakeAV (Ikarus), Gen:Trojan.Hibbit.1 (FSecure), Generic25.CDRC (AVG), Win32:Cybota [Trj] (Avast), TROJ_FORUCON.BMC (TrendMicro), Trojan.Win32.Alureon.FD, Trojan.Win32.Swrort.3.FD, BackdoorCycbot.YR, BankerGeneric.YR (Lavasoft MAS)Behaviour: Banker, Trojan, Backdoor, Fake-AV

The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Summary

MD5: c6a0ca6941a8fc3f7a17665c87978402

SHA1: 1e5c85a2dab2894141e04ee9605dc10b03da687e

SHA256: acd89f1b4d77e62ac69547625ecfa3d1e80efe527149fa12511f6faee20aba00

SSDeep: 49152:U/lOMVurTbEz0t4eohYuUaJNVKaHjA2GQBs18F:6OMV6TbE oqaJvQ2G4

Size: 2012672 bytes

File type: EXE

Platform: WIN32

Entropy: Packed

PEID: UPolyXv05_v6

Company: no certificate found

Created at: 2005-09-09 14:01:29

Analyzed on: WindowsXP SP3 32-bit

Summary: Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

dwme.exe:556
dwme.exe:1532
dwme.exe:360
%original file name%.exe:1744
2.tmp:220
msiexec.exe:496

The Trojan injects its code into the following process(es):

AV Security 2012v121.exe:492
dwme.exe:584

File activity

The process AV Security 2012v121.exe:492 makes changes in the file system.


The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\BxA1uvS2oFpGsJd\AV Security 2012.ico (676 bytes)
%Documents and Settings%\%current user%\Start Menu\Programs\AV Security 2012\AV Security 2012.lnk (1 bytes)
%Documents and Settings%\%current user%\Application Data\ldr.ini (1668 bytes)
%Documents and Settings%\%current user%\Desktop\AV Security 2012.lnk (1 bytes)
%System%\drivers\etc\hosts (3191 bytes)

The Trojan deletes the following file(s):

C:\%original file name%.exe (0 bytes)

The process dwme.exe:584 makes changes in the file system.


The Trojan creates and/or writes to the following file(s):

%System%\config\software (729 bytes)
%Program Files%\LP\8FBA\2.tmp (12588 bytes)
%Program Files%\LP\8FBA\C29.exe (279122 bytes)
%System%\config\SOFTWARE.LOG (1603 bytes)
%Documents and Settings%\%current user%\Application Data\A8A67\7A25.8A6 (2656 bytes)

The process %original file name%.exe:1744 makes changes in the file system.


The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\dwme.exe (289 bytes)
%System%\AV Security 2012v121.exe (12289 bytes)
%Documents and Settings%\%current user%\Application Data\dwme.exe (289 bytes)
%System%\config\software (2975 bytes)
%System%\config\SOFTWARE.LOG (6950 bytes)

Registry activity

The process AV Security 2012v121.exe:492 makes changes in the system registry.


The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "9B 6C DC F5 57 0D 2D CE 39 9F D9 BF CF 39 F0 3A"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"
"CommonVideo" = "%Documents and Settings%\All Users\Documents\My Videos"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Desktop" = "%Documents and Settings%\%current user%\Desktop"
"My Pictures" = "%Documents and Settings%\%current user%\My Documents\My Pictures"
"Programs" = "%Documents and Settings%\%current user%\Start Menu\Programs"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"CommonMusic" = "%Documents and Settings%\All Users\Documents\My Music"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Start Menu" = "%Documents and Settings%\All Users\Start Menu"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Start Menu" = "%Documents and Settings%\%current user%\Start Menu"
"Personal" = "%Documents and Settings%\%current user%\My Documents"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"CommonPictures" = "%Documents and Settings%\All Users\Documents\My Pictures"

The process dwme.exe:584 makes changes in the system registry.


The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "75 2D D7 26 8D D6 EC 9C 4D 0C 28 5C 92 5A BD 28"

Automatic startup of the following service is disabled:

[HKLM\System\CurrentControlSet\Services\wscsvc]
"Start" = "3"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"C29.exe" = "%Program Files%\LP\8FBA\C29.exe"

The process dwme.exe:556 makes changes in the system registry.


The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C5 67 5E 12 CC 07 9D 12 7E 25 AA 5B D5 42 A4 87"

The process dwme.exe:1532 makes changes in the system registry.


The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "DD B7 9B 02 63 39 8B 91 52 47 FB CB F6 91 E0 DD"

The process dwme.exe:360 makes changes in the system registry.


The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "8D 3A 1C 33 73 F2 A2 2B D2 50 52 C9 5B FF 21 86"

The process %original file name%.exe:1744 makes changes in the system registry.


The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "2C CF CF 89 B9 D1 26 1B AB AC B9 C2 D4 89 E9 B3"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"I8RLhTXwjClBzNc" = "%Documents and Settings%\%current user%\Application Data\dwme.exe"

"OXqjUCekIrPyAuD8234A" = "%System%\AV Security 2012v121.exe"

The process 2.tmp:220 makes changes in the system registry.


The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "4F 68 7B 26 41 88 F6 10 CC 04 FC 3A AE D9 C0 DC"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"

[HKCU\Software\WinRAR]
"HWID" = "7B 31 33 41 30 38 41 44 30 2D 44 35 36 38 2D 34"

The process msiexec.exe:496 makes changes in the system registry.


The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "09 FA 58 C0 90 F4 2B 48 24 04 A7 11 0C BF DC C6"

Network activity (URLs)

URL IP
hxxp://23.60.133.163/pca3.crl
hxxp://e6845.ce.akamaiedge.net/CSC3-2009-2.crl
hxxp://a26.d.akamai.net/msdownload/update/v3/static/trustedr/en/authrootseq.txt
hxxp://a26.d.akamai.net/msdownload/update/v3/static/trustedr/en/authrootstl.cab
hxxp://www.google.com/173.194.43.81
hxxp://www.google.ca/?gfe_rd=cr&ei=bzXqUqKvEqyC8QeR9IGwBg173.194.43.87
www.download.windowsupdate.com65.172.31.48
csc3-2009-2-crl.verisign.com23.60.133.163
ourdatatransfers.comUnresolvable
worldorderlive.comUnresolvable


HOSTS file anomalies

The Trojan modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses. The modified file is 837 bytes in size. The following strings are added to the hosts file listed below:

46.4.179.109google.com
46.4.179.109yahoo.com
46.4.179.109bing.com


Rootkit activity

No anomalies have been detected.

Propagation

Removals

Remove it with Ad-Aware

  1. Click (here) to download and install Ad-Aware Free Antivirus.
  2. Update the definition files.
  3. Run a full scan of your computer.

Manual removal*

  1. Terminate malicious process(es) (How to End a Process With the Task Manager):

    dwme.exe:556
    dwme.exe:1532
    dwme.exe:360
    %original file name%.exe:1744
    2.tmp:220

  2. Delete the original Trojan file.
  3. Delete or disinfect the following files created/modified by the Trojan:

    %Documents and Settings%\%current user%\Application Data\BxA1uvS2oFpGsJd\AV Security 2012.ico (676 bytes)
    %Documents and Settings%\%current user%\Start Menu\Programs\AV Security 2012\AV Security 2012.lnk (1 bytes)
    %Documents and Settings%\%current user%\Application Data\ldr.ini (1668 bytes)
    %Documents and Settings%\%current user%\Desktop\AV Security 2012.lnk (1 bytes)
    %System%\drivers\etc\hosts (3191 bytes)
    %System%\config\software (729 bytes)
    %Program Files%\LP\8FBA\2.tmp (12588 bytes)
    %Program Files%\LP\8FBA\C29.exe (279122 bytes)
    %System%\config\SOFTWARE.LOG (1603 bytes)
    %Documents and Settings%\%current user%\Application Data\A8A67\7A25.8A6 (2656 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\dwme.exe (289 bytes)
    %System%\AV Security 2012v121.exe (12289 bytes)
    %Documents and Settings%\%current user%\Application Data\dwme.exe (289 bytes)

  4. Delete the following value(s) in the autorun key (How to Work with System Registry):

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
    "C29.exe" = "%Program Files%\LP\8FBA\C29.exe"

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
    "I8RLhTXwjClBzNc" = "%Documents and Settings%\%current user%\Application Data\dwme.exe"

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
    "OXqjUCekIrPyAuD8234A" = "%System%\AV Security 2012v121.exe"

  5. Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): 127.0.0.1 localhost
  6. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  7. Reboot the computer.
*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Static Analysis

Network Activity

Map

Strings from Dumps