ramnit | fc62335842aedeb99373d2d2f264ad659ff31f10d5a2ec999ff574c4eae1debd

General

Target

fc62335842aedeb99373d2d2f264ad659ff31f10d5a2ec999ff574c4eae1debd.dll
Size

422KB
MD5

4d1c12fa8ede59a9e3f09f4574331b50
SHA1

40dfed4e49d41e7d05166442916da3d3a14b4512
SHA256

fc62335842aedeb99373d2d2f264ad659ff31f10d5a2ec999ff574c4eae1debd
SHA512

2f47256838a5ca20656d00b5f814881564abd5f941909294fd18c7f32a667aa49eed641aa011ff66ae653409f30f857806ba49e0a92748ebed5009974fa141d7
SSDEEP

12288:2maxrYOIwyXCbxnfKY7IX3taHrmtcEYizsV:2ZCOVyvYkXKizS

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
4936	rundll32Srv.exe
4264	DesktopLayer.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x00040000000226ee-135.dat	upx
behavioral2/memory/4936-136-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x00040000000226ee-138.dat	upx
behavioral2/files/0x0004000000021a93-140.dat	upx
behavioral2/memory/4264-141-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4264-144-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x0004000000021a93-145.dat	upx
behavioral2/memory/4264-146-0x0000000000400000-0x000000000042E000-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\pxD3DF.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 2 IoCs

pid	pid_target	Process	procid_target
636	4708	WerFault.exe	83
204	4708	WerFault.exe	83

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
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\LastUpdateHighDateTime = "30991835"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30991835"	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
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\DomainSuggestion	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\DomainSuggestion\NextUpdateDate = "373183190"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{4723DD61-51CE-11ED-89AC-D2A4FF929712} = "0"	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\LastUpdateLowDateTime = "628659159"	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\FileNames\	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 (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\Recovery\PendingRecovery	iexplore.exe
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\LastCheckForUpdateLowDateTime = "628659159"	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 (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4264	DesktopLayer.exe
4264	DesktopLayer.exe
4264	DesktopLayer.exe
4264	DesktopLayer.exe
4264	DesktopLayer.exe
4264	DesktopLayer.exe
4264	DesktopLayer.exe
4264	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2892	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
2892	iexplore.exe
2892	iexplore.exe
2684	IEXPLORE.EXE
2684	IEXPLORE.EXE
2684	IEXPLORE.EXE
2684	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4788 wrote to memory of 4708	4788	rundll32.exe	83
PID 4788 wrote to memory of 4708	4788	rundll32.exe	83
PID 4788 wrote to memory of 4708	4788	rundll32.exe	83
PID 4708 wrote to memory of 4936	4708	rundll32.exe	84
PID 4708 wrote to memory of 4936	4708	rundll32.exe	84
PID 4708 wrote to memory of 4936	4708	rundll32.exe	84
PID 4936 wrote to memory of 4264	4936	rundll32Srv.exe	87
PID 4936 wrote to memory of 4264	4936	rundll32Srv.exe	87
PID 4936 wrote to memory of 4264	4936	rundll32Srv.exe	87
PID 4708 wrote to memory of 636	4708	rundll32.exe	88
PID 4708 wrote to memory of 636	4708	rundll32.exe	88
PID 4708 wrote to memory of 636	4708	rundll32.exe	88
PID 4264 wrote to memory of 2892	4264	DesktopLayer.exe	89
PID 4264 wrote to memory of 2892	4264	DesktopLayer.exe	89
PID 2892 wrote to memory of 2684	2892	iexplore.exe	90
PID 2892 wrote to memory of 2684	2892	iexplore.exe	90
PID 2892 wrote to memory of 2684	2892	iexplore.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fc62335842aedeb99373d2d2f264ad659ff31f10d5a2ec999ff574c4eae1debd.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4788
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fc62335842aedeb99373d2d2f264ad659ff31f10d5a2ec999ff574c4eae1debd.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4708
- - 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:4936
  - - 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:4264
    - - 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:2892
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2892 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2684
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 624
    3⤵
    - Program crash
    PID:636
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 624
    3⤵
    - Program crash
    PID:204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 396 -p 4708 -ip 4708
1⤵
PID:2184

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

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Downloads

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

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

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

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

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

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

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

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/4264-144-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4264-141-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4264-142-0x0000000000580000-0x000000000058F000-memory.dmp

Filesize
60KB

Download
memory/4264-146-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4708-133-0x0000000021100000-0x0000000021173000-memory.dmp

Filesize
460KB

Download
memory/4708-148-0x0000000021100000-0x0000000021173000-memory.dmp

Filesize
460KB

Download
memory/4936-137-0x0000000000540000-0x000000000054F000-memory.dmp

Filesize
60KB

Download
memory/4936-136-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4936-143-0x0000000000540000-0x000000000054F000-memory.dmp

Filesize
60KB

Download

Analysis

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