ramnit | df77dd69b8085bcd0bac0a6493b405b2cb4faab5a8394e9c25dcb594c8735c54

Analysis

max time kernel
128s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
14/06/2024, 14:21

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General

Target
Windows优化卫士 6.0/YiXinSafe/mb.dll
Size 8.2MB
Sample240614-rpcgmathka
SHA256 1f48007c2b9c6fe919579c3375d2505727f5fcf1b5059cb769cb81bfc9be4ce4
MD5 3ca3a8b5f33d1a0495a299a09b9b990f
SHA1 c6245ad97407dadcc8a32d01c562d952d6477c49
SHA512 632c7af384b77e1c913997849e4b8ab757b4f6a07c5fe2836e89a44d7d2a80e8657a44529753a2a2bcf3c35fe16d2100ce94c3770a5c6d32040c9da9b405acc8
SSDEEP 98304:Btw4MNqQmNmjdZg+BS2zDwo17vh4gUNaAlbQBma/GYeYVQPfZyyEVlJFUq/EUiDy:AqKdZjZHwo17iNVQ/+RfsywGm
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

Executes dropped EXE 2 IoCs

pid	Process
740	rundll32Srv.exe
2940	DesktopLayer.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral6/files/0x00090000000234d5-2.dat	upx
behavioral6/memory/740-12-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral6/memory/2940-15-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral6/memory/2940-13-0x0000000000400000-0x000000000042E000-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 opened for modification	C:\Program Files (x86)\Microsoft\px369B.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 3 IoCs

pid	pid_target	Process	procid_target
1076	1604	WerFault.exe	92
2196	1604	WerFault.exe	92
3068	1604	WerFault.exe	92

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31112806"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{6F13357F-2A59-11EF-90FA-525B2696ACE5} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\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
Key created	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "425139882"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1133655713"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1139749787"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1133655713"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31112806"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31112806"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2940	DesktopLayer.exe
2940	DesktopLayer.exe
2940	DesktopLayer.exe
2940	DesktopLayer.exe
2940	DesktopLayer.exe
2940	DesktopLayer.exe
2940	DesktopLayer.exe
2940	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1784	iexplore.exe

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
1604	rundll32.exe
1784	iexplore.exe
1784	iexplore.exe
3024	IEXPLORE.EXE
3024	IEXPLORE.EXE
3024	IEXPLORE.EXE
3024	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 380 wrote to memory of 1604	380	rundll32.exe	92
PID 380 wrote to memory of 1604	380	rundll32.exe	92
PID 380 wrote to memory of 1604	380	rundll32.exe	92
PID 1604 wrote to memory of 740	1604	rundll32.exe	93
PID 1604 wrote to memory of 740	1604	rundll32.exe	93
PID 1604 wrote to memory of 740	1604	rundll32.exe	93
PID 740 wrote to memory of 2940	740	rundll32Srv.exe	94
PID 740 wrote to memory of 2940	740	rundll32Srv.exe	94
PID 740 wrote to memory of 2940	740	rundll32Srv.exe	94
PID 2940 wrote to memory of 1784	2940	DesktopLayer.exe	95
PID 2940 wrote to memory of 1784	2940	DesktopLayer.exe	95
PID 1784 wrote to memory of 3024	1784	iexplore.exe	96
PID 1784 wrote to memory of 3024	1784	iexplore.exe	96
PID 1784 wrote to memory of 3024	1784	iexplore.exe	96

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Windows优化卫士 6.0\YiXinSafe\mb.dll",#1
1⤵
- Suspicious use of WriteProcessMemory
PID:380
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Windows优化卫士 6.0\YiXinSafe\mb.dll",#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1604
- - 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:740
  - - 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:2940
    - - 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:1784
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1784 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3024
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 852
    3⤵
    - Program crash
    PID:1076
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 904
    3⤵
    - Program crash
    PID:2196
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 920
    3⤵
    - Program crash
    PID:3068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1604 -ip 1604
1⤵
PID:936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1604 -ip 1604
1⤵
PID:4300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1604 -ip 1604
1⤵
PID:4404

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4432,i,6522675234395427298,2952738987384583032,262144 --variations-seed-version --mojo-platform-channel-handle=1308 /prefetch:8
1⤵
PID:2080

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\QZRYTBAT\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 55KB
SHA256 fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
MD5 ff5e1f27193ce51eec318714ef038bef
SHA1 b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA512 c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
SSDEEP 1536:Q+hzRsibKplyXTq8OGRnsPFG+RODTb7MXL5uXZnzE:bROzoTq0+RO7IwnY
MD5 SHA1 SHA512 SSDEEP

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memory/740-12-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/740-9-0x0000000002040000-0x000000000204F000-memory.dmp

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memory/1604-7-0x0000000010000000-0x0000000010897000-memory.dmp

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memory/2940-11-0x00000000004A0000-0x00000000004A1000-memory.dmp

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memory/2940-15-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/2940-13-0x0000000000400000-0x000000000042E000-memory.dmp

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