ramnit | 266d5bf09a3272c9cbfaadddcfca0309c4fec013dbc344a1de65160192df1521

Analysis

max time kernel
136s
max time network
179s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17/04/2024, 19:39

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General

Target
266d5bf09a3272c9cbfaadddcfca0309c4fec013dbc344a1de65160192df1521.dll
Size 1.7MB
Sample240417-ydf41acb84
SHA256 266d5bf09a3272c9cbfaadddcfca0309c4fec013dbc344a1de65160192df1521
MD5 b950c2d4b18caa56e8cb6ce918cea9ba
SHA1 a99c782717ea7ca0bc6acc66a8393108f621d0d7
SHA512 3822f2515d54b824d4cf6e9888b2a823947542a106e017d078370635831bf1c4fdce7f11715438d3b6ca645644df56d415fb26aba2a6fa02a1e8d419ed72ec37
SSDEEP 49152:8cSnPKoAO4byq0La4hqa/mGuLIQ1bsjFjnq5qRfY5is5yxoRdbsoFW5rP0Ei:vSneJbyq0O4BmGuLI6bsjFjnqgRIB4Uf
MD5 SHA1 SHA512 SSDEEP

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

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral2/files/0x000700000002351a-3.dat	UPX
behavioral2/memory/364-4-0x0000000000400000-0x0000000000435000-memory.dmp	UPX
behavioral2/memory/364-8-0x0000000000400000-0x0000000000435000-memory.dmp	UPX
behavioral2/memory/1008-11-0x0000000000400000-0x0000000000435000-memory.dmp	UPX
behavioral2/memory/1008-14-0x0000000000400000-0x0000000000435000-memory.dmp	UPX
behavioral2/memory/872-20-0x0000000075350000-0x000000007550B000-memory.dmp	UPX

Executes dropped EXE 2 IoCs

pid	Process
364	rundll32Srv.exe
1008	DesktopLayer.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000700000002351a-3.dat	upx
behavioral2/memory/364-4-0x0000000000400000-0x0000000000435000-memory.dmp	upx
behavioral2/memory/364-8-0x0000000000400000-0x0000000000435000-memory.dmp	upx
behavioral2/memory/1008-11-0x0000000000400000-0x0000000000435000-memory.dmp	upx
behavioral2/memory/1008-14-0x0000000000400000-0x0000000000435000-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 opened for modification	C:\Program Files (x86)\Microsoft\pxAF08.tmp	rundll32Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1052	872	WerFault.exe	89

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{A13884BE-FCF2-11EE-A3F9-CA8BED118634} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2006681714"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31101183"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2006681714"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31101183"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "420147961"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2436837113"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31101183"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1008	DesktopLayer.exe
1008	DesktopLayer.exe
1008	DesktopLayer.exe
1008	DesktopLayer.exe
1008	DesktopLayer.exe
1008	DesktopLayer.exe
1008	DesktopLayer.exe
1008	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2400	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
2400	iexplore.exe
2400	iexplore.exe
2052	IEXPLORE.EXE
2052	IEXPLORE.EXE
2052	IEXPLORE.EXE
2052	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4512 wrote to memory of 872	4512	rundll32.exe	89
PID 4512 wrote to memory of 872	4512	rundll32.exe	89
PID 4512 wrote to memory of 872	4512	rundll32.exe	89
PID 872 wrote to memory of 364	872	rundll32.exe	95
PID 872 wrote to memory of 364	872	rundll32.exe	95
PID 872 wrote to memory of 364	872	rundll32.exe	95
PID 364 wrote to memory of 1008	364	rundll32Srv.exe	97
PID 364 wrote to memory of 1008	364	rundll32Srv.exe	97
PID 364 wrote to memory of 1008	364	rundll32Srv.exe	97
PID 1008 wrote to memory of 2400	1008	DesktopLayer.exe	99
PID 1008 wrote to memory of 2400	1008	DesktopLayer.exe	99
PID 2400 wrote to memory of 2052	2400	iexplore.exe	102
PID 2400 wrote to memory of 2052	2400	iexplore.exe	102
PID 2400 wrote to memory of 2052	2400	iexplore.exe	102

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\266d5bf09a3272c9cbfaadddcfca0309c4fec013dbc344a1de65160192df1521.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4512
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\266d5bf09a3272c9cbfaadddcfca0309c4fec013dbc344a1de65160192df1521.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:872
- - 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:364
  - - 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:1008
    - - 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:2400
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2400 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2052
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 872 -s 720
    3⤵
    - Program crash
    PID:1052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 872 -ip 872
1⤵
PID:220

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

suggestions[1].en-US

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\TOZYVZGO\suggestions[1].en-US
Size 17KB
SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
MD5 5a34cb996293fde2cb7a4ac89587393a
SHA1 3c96c993500690d1a77873cd62bc639b3a10653f
SHA512 e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
SSDEEP 384:K4gN8sGygaEKfWYSJUKbO7UckxtBjCdY7mO3D0C5l+piEieDSV126ry1/XSGKwG3:K4gNFXiKfWfJ1Kockxbd7mAt5Mp5ie2F
MD5 SHA1 SHA512 SSDEEP

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rundll32Srv.exe

Path C:\Windows\SysWOW64\rundll32Srv.exe
Size 83KB
SHA256 bd08727b2f887b1d27a3515bf611501eba6c786e2f73e958063ef52e3d6765a5
MD5 94b88ad3cbf4512d2562c94054c3a88d
SHA1 e4a8f7575f992427654ddda1c6556b71eb136c6c
SHA512 f2a7c54f87ad808305df62fa242033282630616d158b142593d7494b51cfb96b8b9a692dd9f67b97e133d1ef1400c24f3d302b276c9931dad422afc5dbdc08b3
SSDEEP 1536:4+hzRsibKplyXTq8OGRnsPFG+RODTb7MXL5uXZnzEbXpptfpKcNjAAEc5TGj4vZZ:TROzoTq0+RO7IwnYb/tfEcFdE4+m7
MD5 SHA1 SHA512 SSDEEP

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memory/364-6-0x00000000005B0000-0x00000000005BF000-memory.dmp

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memory/364-4-0x0000000000400000-0x0000000000435000-memory.dmp

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memory/364-8-0x0000000000400000-0x0000000000435000-memory.dmp

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memory/872-20-0x0000000075350000-0x000000007550B000-memory.dmp

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memory/872-1-0x0000000075350000-0x000000007550B000-memory.dmp

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memory/1008-15-0x0000000000570000-0x0000000000571000-memory.dmp

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memory/1008-14-0x0000000000400000-0x0000000000435000-memory.dmp

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memory/1008-17-0x0000000000560000-0x000000000056F000-memory.dmp

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memory/1008-18-0x0000000077AA2000-0x0000000077AA3000-memory.dmp

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memory/1008-16-0x0000000077AA2000-0x0000000077AA3000-memory.dmp

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memory/1008-11-0x0000000000400000-0x0000000000435000-memory.dmp

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