ramnit | 0a7181f637d631cc52f69213e2979970b805bb6fa2d8e741ff47447ae9ebbf63

General

Target

0a7181f637d631cc52f69213e2979970b805bb6fa2d8e741ff47447ae9ebbf63.dll
Size

496KB
MD5

a2dfb9cea471297c7d8dea21beebfec0
SHA1

c1ef354b9135e97b9e6ff7913de3293b5e6cd994
SHA256

0a7181f637d631cc52f69213e2979970b805bb6fa2d8e741ff47447ae9ebbf63
SHA512

72974a755d623282a82664c7863893ebd0aa96f8041319ffd0e9bb6eae08ea4b44ef963b5a3fa0f1131b2f060ee7d05dcf3f1271e3dd201e906e881ae1f2d3a0
SSDEEP

12288:9ehnaNPpSVZmNxRCwnwm3W3OHIIf54bJsCfJshzF:9eh0PpS6NxNnwYeOHX6i0shz

Score

10^/10

ramnit banker spyware stealer trojan upx worm

Malware Config

Signatures

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit

Executes dropped EXE 2 IoCs

pid	Process
1540	rundll32Srv.exe
2296	DesktopLayer.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x0007000000022e32-134.dat	upx
behavioral2/files/0x0007000000022e32-135.dat	upx
behavioral2/files/0x000c000000022e0b-142.dat	upx
behavioral2/files/0x000c000000022e0b-140.dat	upx
behavioral2/memory/1540-138-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/2296-143-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32Srv.exe	rundll32.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\pxC614.tmp	rundll32Srv.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5036	4084	WerFault.exe	81

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30993515"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "373904867"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1956336393"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30993515"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1956336393"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{9BF75DC7-585E-11ED-89AC-520B3B914C01} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2296	DesktopLayer.exe
2296	DesktopLayer.exe
2296	DesktopLayer.exe
2296	DesktopLayer.exe
2296	DesktopLayer.exe
2296	DesktopLayer.exe
2296	DesktopLayer.exe
2296	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
676	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
676	iexplore.exe
676	iexplore.exe
5096	IEXPLORE.EXE
5096	IEXPLORE.EXE
5096	IEXPLORE.EXE
5096	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4456 wrote to memory of 4084	4456	rundll32.exe	81
PID 4456 wrote to memory of 4084	4456	rundll32.exe	81
PID 4456 wrote to memory of 4084	4456	rundll32.exe	81
PID 4084 wrote to memory of 1540	4084	rundll32.exe	82
PID 4084 wrote to memory of 1540	4084	rundll32.exe	82
PID 4084 wrote to memory of 1540	4084	rundll32.exe	82
PID 1540 wrote to memory of 2296	1540	rundll32Srv.exe	83
PID 1540 wrote to memory of 2296	1540	rundll32Srv.exe	83
PID 1540 wrote to memory of 2296	1540	rundll32Srv.exe	83
PID 2296 wrote to memory of 676	2296	DesktopLayer.exe	85
PID 2296 wrote to memory of 676	2296	DesktopLayer.exe	85
PID 676 wrote to memory of 5096	676	iexplore.exe	88
PID 676 wrote to memory of 5096	676	iexplore.exe	88
PID 676 wrote to memory of 5096	676	iexplore.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0a7181f637d631cc52f69213e2979970b805bb6fa2d8e741ff47447ae9ebbf63.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4456
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0a7181f637d631cc52f69213e2979970b805bb6fa2d8e741ff47447ae9ebbf63.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4084
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:1540
  - - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
      "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:2296
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:676
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:676 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:5096
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4084 -s 616
    3⤵
    - Program crash
    PID:5036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4084 -ip 4084
1⤵
PID:3664

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
111KB

MD5
9f179e646fb978a30b2aa0885e78c50f

SHA1
48314dd692a9494c44a90c6a4586775e9fee613e

SHA256
f3838d7a76e03d0488392389e8b9ba12e020dd765d9396ec584e546ad989a9b9

SHA512
eec10d1b634d9615902814616f89cfa7af31b575e84ec27db90a5f5376b186559ea2ec7faadd9ba95568ee90a7ef37d1363247828716fb4ae5fc25cfe88be10b

Download Submit
C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
111KB

MD5
9f179e646fb978a30b2aa0885e78c50f

SHA1
48314dd692a9494c44a90c6a4586775e9fee613e

SHA256
f3838d7a76e03d0488392389e8b9ba12e020dd765d9396ec584e546ad989a9b9

SHA512
eec10d1b634d9615902814616f89cfa7af31b575e84ec27db90a5f5376b186559ea2ec7faadd9ba95568ee90a7ef37d1363247828716fb4ae5fc25cfe88be10b

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
111KB

MD5
9f179e646fb978a30b2aa0885e78c50f

SHA1
48314dd692a9494c44a90c6a4586775e9fee613e

SHA256
f3838d7a76e03d0488392389e8b9ba12e020dd765d9396ec584e546ad989a9b9

SHA512
eec10d1b634d9615902814616f89cfa7af31b575e84ec27db90a5f5376b186559ea2ec7faadd9ba95568ee90a7ef37d1363247828716fb4ae5fc25cfe88be10b

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
111KB

MD5
9f179e646fb978a30b2aa0885e78c50f

SHA1
48314dd692a9494c44a90c6a4586775e9fee613e

SHA256
f3838d7a76e03d0488392389e8b9ba12e020dd765d9396ec584e546ad989a9b9

SHA512
eec10d1b634d9615902814616f89cfa7af31b575e84ec27db90a5f5376b186559ea2ec7faadd9ba95568ee90a7ef37d1363247828716fb4ae5fc25cfe88be10b

Download Submit
memory/1540-139-0x0000000000470000-0x000000000047F000-memory.dmp

Filesize
60KB

Download
memory/1540-138-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2296-141-0x0000000000470000-0x000000000047F000-memory.dmp

Filesize
60KB

Download
memory/2296-143-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4084-137-0x0000000010000000-0x000000001007E000-memory.dmp

Filesize
504KB

Download

Analysis

Sharing