Trojan.Win32.Badur.zczp (Kaspersky), Gen:Variant.Kazy.556545 (B) (Emsisoft), Gen:Variant.Kazy.556545 (AdAware), mzpefinder_pcap_file.YR (Lavasoft MAS)Behaviour: Trojan
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: 5951164a1d237ea1d8d5806f5cbb48c4
SHA1: 157de7616c2507135274ebbe1237b70600c5f694
SHA256: 3d2a0f929306be22dc8b3217786143bd786d2821cf5e227ac6e4771943ecf922
SSDeep: 1536:h5nXUOV6yA08DoeMY M CQPOeQyHPzcgN3XN11NKxGqLQ7U Rj aqES:rECoAJm
Size: 212992 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: AirInstaller
Created at: 2015-02-24 17:07:00
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):
%original file name%.exe:704
csc.exe:1108
cvtres.exe:1032
The Trojan injects its code into the following process(es):No processes have been created.
Mutexes
The following mutexes were created/opened:No objects were found.
File activity
The process %original file name%.exe:704 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\LiteDB\UnicKey.xml (348 bytes)
%Documents and Settings%\%current user%\Application Data\LiteDB\ppiName.xml (241 bytes)
%Documents and Settings%\%current user%\Application Data\vk-pro\vk-pro-bot.exe (5935444 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.0.cs (1444 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (5060 bytes)
%Documents and Settings%\%current user%\Application Data\vk-pro\update.exe (69 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.cmdline (424 bytes)
%Documents and Settings%\%current user%\Desktop\vk-pro.lnk (818 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT.LOG (5288 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.out (491 bytes)
The Trojan deletes the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.0.cs (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.dll (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.err (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.cmdline (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.out (0 bytes)
The process csc.exe:1108 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\CSC1.tmp (652 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.out (396 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.dll (4700 bytes)
The Trojan deletes the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\CSC1.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\RES2.tmp (0 bytes)
The process cvtres.exe:1032 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\RES2.tmp (2912 bytes)
Registry activity
The process %original file name%.exe:704 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "83 0D F5 6A 92 BA 0A 0A 47 75 0E 90 E7 E1 5B B8"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-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"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[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]
"My Pictures" = "%Documents and Settings%\%current user%\My Documents\My Pictures"
"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]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
"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"
To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"UpdateVKpro" = "%Documents and Settings%\%current user%\Application Data\vk-pro\update.exe"
The process csc.exe:1108 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "40 24 50 36 AE FD 0B 44 B0 BA 74 C2 E7 7A F9 0B"
The process cvtres.exe:1032 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B8 6D EB 0E 9F B2 4E A5 CD 13 56 05 09 DA 17 FA"
Dropped PE files
| MD5 | File path |
|---|---|
| 1e8d89251ec543ef1e8e2a23ae29e47c | c:\Documents and Settings\"%CurrentUserName%"\Application Data\vk-pro\update.exe |
| 0f8121112d0853db8bb798bda13ca9f0 | c:\Documents and Settings\"%CurrentUserName%"\Application Data\vk-pro\vk-pro-bot.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):
%original file name%.exe:704
csc.exe:1108
cvtres.exe:1032 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Application Data\LiteDB\UnicKey.xml (348 bytes)
%Documents and Settings%\%current user%\Application Data\LiteDB\ppiName.xml (241 bytes)
%Documents and Settings%\%current user%\Application Data\vk-pro\vk-pro-bot.exe (5935444 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.0.cs (1444 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (5060 bytes)
%Documents and Settings%\%current user%\Application Data\vk-pro\update.exe (69 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.cmdline (424 bytes)
%Documents and Settings%\%current user%\Desktop\vk-pro.lnk (818 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT.LOG (5288 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.out (491 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\CSC1.tmp (652 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\fnv-r2ht.dll (4700 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\RES2.tmp (2912 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"UpdateVKpro" = "%Documents and Settings%\%current user%\Application Data\vk-pro\update.exe" - Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
Static Analysis
VersionInfo
Company Name:
Product Name:
Product Version: 0.0.0.0
Legal Copyright:
Legal Trademarks:
Original Filename: installer_webasm.exe
Internal Name: installer_webasm.exe
File Version: 0.0.0.0
File Description:
Comments:
Language: English (United States)
Company Name: Product Name: Product Version: 0.0.0.0Legal Copyright: Legal Trademarks: Original Filename: installer_webasm.exeInternal Name: installer_webasm.exeFile Version: 0.0.0.0File Description: Comments: Language: English (United States)
PE Sections
| Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
|---|---|---|---|---|---|
| .text | 8192 | 197332 | 200704 | 2.27695 | da72f410817151da0a2331d12b0e8dd5 |
| .rsrc | 212992 | 1280 | 4096 | 1.20869 | 540973454c82cc594a6ca0770d9fe273 |
| .reloc | 221184 | 12 | 4096 | 0.011373 | 349f800f16957d106b4cd92c4347199f |
Dropped from:
Downloaded by:
Similar by SSDeep:
Similar by Lavasoft Polymorphic Checker:
Network Activity
URLs
| URL | IP |
|---|---|
| hxxp://winsofting.ru/vk-pro-bot.exe | 159.253.19.170 |
IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)
Traffic
GET /vk-pro-bot.exe HTTP/1.1
Host: winsofting.ru
Connection: Keep-Alive
HTTP/1.1 200 OK
Server: nginx
Date: Mon, 16 Mar 2015 19:16:17 GMT
Content-Type: application/octet-stream
Content-Length: 48679059
Last-Modified: Fri, 13 Mar 2015 11:54:52 GMT
Connection: keep-alive
Accept-Ranges: bytes
MZ......................@...................................8...........!..L.!This program cannot be run in DOS mode....$........9I..X'..X'..X'.t....X'......Y'......X'......X'../...X'.. ...X'../...X'../...X'../...X'..X&..\'../...X'..X'..X'......^'......D'......X'......X'..X...X'......X'.Rich.X'.................PE..L....l.S.........."..........H....................@.......................................@.........................0.`...............m......................p...0....................................`.@...............T....}`.@....................text............................... ..`.rdata....s.......s.................@..@.data.........a.......a.............@....unwante4....pm.......d.............@..@.tls..........m.......d.............@..._RDATA........m.......d.............@..@.rodata.......m.......e.............@..@.rsrc.........m.......e.............@..@.reloc........o.......f.............@..B.enigma1..........i...x.............@....enigma2........................................................SW1..X..5.. .P..X1.tN1.....tF1.@.........t.........t.........t...........=....v...............t......_[....&....U..........$...e.SVW.H.....:...Q.p..H..>.^..V..<.......Y.p..@.........RSWVQ.6.?.......shPR..I...t....1.......t....1.f.........n.ZX...t.....n4..s. ......t..o..o.......$........t..o..o..ov....m..o..ov..on..o..s. .s. .h..s. .`..h..o..s. .s. .h..s. .`..h.....o..`..h..o..`..h..o..`..h...E...M...e...m..o..a..i..o..o......k...5..k...=..k...%..k...M...u........a..i..r...r...o-..k..............r...r.
<<< skipped >>>
Map
The Trojan connects to the servers at the folowing location(s):