HEUR:Trojan.Win32.Generic (Kaspersky), Gen:Variant.Gamarue.1 (B) (Emsisoft), Gen:Variant.Gamarue.1 (AdAware), Trojan-Downloader.Win32.Andromeda.FD, TrojanDownloaderAndromeda.YR (Lavasoft MAS)Behaviour: Trojan-Downloader, Trojan
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: 5346d821fc6ae49b12b13014dbb6721b
SHA1: 94606e9f829a84c236d91c9981745ff4853ed63f
SHA256: bf22ad9320a8573189df046a04a61bc4f2190e30a826ad6bc789a2f22d35565f
SSDeep: 3072:golhK8sqT6MM6MMMMMMMMM2kxYJ ipeq1u4oTsZlgghZ SlnopAqcKzkAwLNe54s:gondu4ogr7 KopAqc68Hvsl
Size: 160256 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: BorlandDelphi30, UPolyXv05_v6
Company: no certificate found
Created at: 2013-01-09 15:05:27
Analyzed on: WindowsXP SP3 32-bit
Summary: Trojan-Downloader. Trojan program, which downloads files from the Internet without user's notice and executes them.
Dynamic Analysis
Payload
No specific payload has been found.
Process activity
The Trojan creates the following process(es):
~msiexec.exe:920
%original file name%.exe:388
%original file name%.exe:1256
The Trojan injects its code into the following process(es):
~msiexec.exe:1540
Mutexes
The following mutexes were created/opened:No objects were found.
File activity
The process ~msiexec.exe:1540 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Documents and Settings%\All Users\svchost.exe (37 bytes)
The process %original file name%.exe:1256 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\$MSI\~msiexec.exe (37 bytes)
Registry activity
The process ~msiexec.exe:920 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "6C 49 13 40 63 6D 8B 63 89 3D A8 10 71 F9 B6 0D"
The process ~msiexec.exe:1540 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "93 7E 82 6E 5A 76 30 62 40 F1 9A 6D D7 D3 3A 84"
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]
"SunJavaUpdateSched" = "%Documents and Settings%\All Users\svchost.exe"
The process %original file name%.exe:388 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "15 74 9C FD 4B FF E7 5E 54 F4 FF 7B FC 6C 48 71"
The process %original file name%.exe:1256 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "86 E3 55 2C C0 96 44 02 BC 99 0A 05 0A 9E 6F A8"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKLM\SOFTWARE\Microsoft]
"0022FF03" = "50 4B 03 04 00 A6 01 00 50 A4 00 00 85 D4 21 99"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\$MSI]
"~msiexec.exe" = "CRC CheckSum Fixer"
[HKCU\Software]
"e_magic" = "3C 2B E1 71 72 71 71 71 75 71 71 71 8E 8E 71 71"
The Trojan modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass" = "1"
The Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:
"IntranetName" = "1"
The Trojan modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:
"UNCAsIntranet" = "1"
Dropped PE files
MD5 | File path |
---|---|
059eef29b2311d2e933d3b68b6f57b9b | c:\Documents and Settings\All Users\svchost.exe |
059eef29b2311d2e933d3b68b6f57b9b | c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\$MSI\~msiexec.exe |
HOSTS file anomalies
No changes have been detected.
Rootkit activity
No anomalies have been detected.
Propagation
Removals
Remove it with Ad-Aware
- Click (here) to download and install Ad-Aware Free Antivirus.
- Update the definition files.
- Run a full scan of your computer.
Manual removal*
- Terminate malicious process(es) (How to End a Process With the Task Manager):
~msiexec.exe:920
%original file name%.exe:388
%original file name%.exe:1256 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\All Users\svchost.exe (37 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\$MSI\~msiexec.exe (37 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"SunJavaUpdateSched" = "%Documents and Settings%\All Users\svchost.exe" - Reboot the computer.
Static Analysis
VersionInfo
Company Name: Divine
Product Name: Divine CRC CheckSum Fixer
Product Version: 1, 0, 1, 1
Legal Copyright: Copyright Divine(c) 2012
Legal Trademarks: Divine(c)
Original Filename: CheckSum Fixer.exe
Internal Name: CheckSum Fixer
File Version: 1, 0, 0, 1
File Description: CRC CheckSum Fixer
Comments:
Language: English (United States)
Company Name: Divine Product Name: Divine CRC CheckSum FixerProduct Version: 1, 0, 1, 1Legal Copyright: Copyright Divine(c) 2012Legal Trademarks: Divine(c)Original Filename: CheckSum Fixer.exeInternal Name: CheckSum FixerFile Version: 1, 0, 0, 1File Description: CRC CheckSum FixerComments: Language: English (United States)
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
.text | 4096 | 10792 | 11264 | 3.9388 | 51f6ada4502705b312cd1609d63b6338 |
.rdata | 16384 | 500 | 512 | 3.01276 | eab83db1c5019007973bb19b7eb2d050 |
.data | 20480 | 2677 | 512 | 0.339243 | c5235e929468030e2ffb3160cb3092a3 |
.rsrc | 24576 | 146880 | 146944 | 5.39774 | b8232333c4695ef72759f9c68ceec5e5 |
Dropped from:
Downloaded by:
Similar by SSDeep:
Similar by Lavasoft Polymorphic Checker:
Total found: 1
b581542057cdbdfc422ee0b0e2b1be6b
Network Activity
URLs
IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)
Traffic
Map
The Trojan connects to the servers at the folowing location(s):
Strings from Dumps
~msiexec.exe_1540:
.text
.text
hdll.hsbie
hdll.hsbie
h.dllhpi32hadva
h.dllhpi32hadva
.PFoE/3
.PFoE/3
,1.Vd^
,1.Vd^
UPec.Sk"
UPec.Sk"
_[.HRa
_[.HRa
t.erx
t.erx
kernel32.dll
kernel32.dll
~msiexec.exe_1540_rwx_00330000_00002000:
%ALLUSERSPROFILE%\svchost.exe
%ALLUSERSPROFILE%\svchost.exe
SOFTWARE\Microsoft\Windows\CurrentVersion\Run
SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Software\Microsoft\Windows\CurrentVersion\Run
Software\Microsoft\Windows\CurrentVersion\Run
cmd.exe
cmd.exe
ntdll.dll
ntdll.dll
GetProcessHeap
GetProcessHeap
kernel32.dll
kernel32.dll
ws2_32.dll
ws2_32.dll
RegCloseKey
RegCloseKey
RegOpenKeyExA
RegOpenKeyExA
advapi32.dll
advapi32.dll
~msiexec.exe_1540_rwx_00400000_00005000:
.text
.text
hdll.hsbie
hdll.hsbie
h.dllhpi32hadva
h.dllhpi32hadva
.PFoE/3
.PFoE/3
,1.Vd^
,1.Vd^
UPec.Sk"
UPec.Sk"
_[.HRa
_[.HRa
t.erx
t.erx
kernel32.dll
kernel32.dll