ramnit | fef1ec3367c1cdd00a658cc1879d48f1b2408fcd4f25c02b667a8272f24f2a2a

Analysis

max time kernel
152s
max time network
133s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
29/11/2022, 07:34

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General

Target

fef1ec3367c1cdd00a658cc1879d48f1b2408fcd4f25c02b667a8272f24f2a2a.dll
Size

176KB
MD5

b52596cc2f51e4cca31b4be61a1c8ac0
SHA1

89fdbc0d9781d1e2705b8712613e43b93aa436be
SHA256

fef1ec3367c1cdd00a658cc1879d48f1b2408fcd4f25c02b667a8272f24f2a2a
SHA512

f2fec90d388ffc46b9f1adfbde2c686b4f6e07fb778558ca99e22e21bc83997d4734bba425bb99fcb433452fe505fdfc301d4c125d817430d3e751ffa8ed0ad2
SSDEEP

3072:pgKKuiX63bw5dNjDh8pWVgTlFIYnUBBOmCCYhTQw/adrEV:iKZp3KNjVGv5KYhMN4

Score

10^/10

ramnit banker persistence spyware stealer trojan upx worm

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,c:\\program files (x86)\\microsoft\\watermark.exe"	svchost.exe

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
1932	rundll32mgr.exe
1088	WaterMark.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1932-63-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1932-64-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1932-70-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1088-86-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral1/memory/1088-88-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral1/memory/1088-195-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1124	rundll32.exe
1124	rundll32.exe
1932	rundll32mgr.exe
1932	rundll32mgr.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dmlconf.dat	svchost.exe
File opened for modification	C:\Windows\SysWOW64\dmlconf.dat	svchost.exe
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

Drops file in Program Files directory 10 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\7-Zip\7z.dll	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px257C.tmp	rundll32mgr.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7zFM.exe	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7zG.exe	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7-zip.dll	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7-zip32.dll	svchost.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1088	WaterMark.exe
1088	WaterMark.exe
1088	WaterMark.exe
1088	WaterMark.exe
1088	WaterMark.exe
1088	WaterMark.exe
1088	WaterMark.exe
1088	WaterMark.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe
1156	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1088	WaterMark.exe
Token: SeDebugPrivilege	1156	svchost.exe
Token: SeDebugPrivilege	1088	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1932	rundll32mgr.exe
1088	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1168 wrote to memory of 1124	1168	rundll32.exe	27
PID 1168 wrote to memory of 1124	1168	rundll32.exe	27
PID 1168 wrote to memory of 1124	1168	rundll32.exe	27
PID 1168 wrote to memory of 1124	1168	rundll32.exe	27
PID 1168 wrote to memory of 1124	1168	rundll32.exe	27
PID 1168 wrote to memory of 1124	1168	rundll32.exe	27
PID 1168 wrote to memory of 1124	1168	rundll32.exe	27
PID 1124 wrote to memory of 1932	1124	rundll32.exe	28
PID 1124 wrote to memory of 1932	1124	rundll32.exe	28
PID 1124 wrote to memory of 1932	1124	rundll32.exe	28
PID 1124 wrote to memory of 1932	1124	rundll32.exe	28
PID 1932 wrote to memory of 1088	1932	rundll32mgr.exe	29
PID 1932 wrote to memory of 1088	1932	rundll32mgr.exe	29
PID 1932 wrote to memory of 1088	1932	rundll32mgr.exe	29
PID 1932 wrote to memory of 1088	1932	rundll32mgr.exe	29
PID 1088 wrote to memory of 1920	1088	WaterMark.exe	30
PID 1088 wrote to memory of 1920	1088	WaterMark.exe	30
PID 1088 wrote to memory of 1920	1088	WaterMark.exe	30
PID 1088 wrote to memory of 1920	1088	WaterMark.exe	30
PID 1088 wrote to memory of 1920	1088	WaterMark.exe	30
PID 1088 wrote to memory of 1920	1088	WaterMark.exe	30
PID 1088 wrote to memory of 1920	1088	WaterMark.exe	30
PID 1088 wrote to memory of 1920	1088	WaterMark.exe	30
PID 1088 wrote to memory of 1920	1088	WaterMark.exe	30
PID 1088 wrote to memory of 1920	1088	WaterMark.exe	30
PID 1088 wrote to memory of 1156	1088	WaterMark.exe	31
PID 1088 wrote to memory of 1156	1088	WaterMark.exe	31
PID 1088 wrote to memory of 1156	1088	WaterMark.exe	31
PID 1088 wrote to memory of 1156	1088	WaterMark.exe	31
PID 1088 wrote to memory of 1156	1088	WaterMark.exe	31
PID 1088 wrote to memory of 1156	1088	WaterMark.exe	31
PID 1088 wrote to memory of 1156	1088	WaterMark.exe	31
PID 1088 wrote to memory of 1156	1088	WaterMark.exe	31
PID 1088 wrote to memory of 1156	1088	WaterMark.exe	31
PID 1088 wrote to memory of 1156	1088	WaterMark.exe	31
PID 1156 wrote to memory of 260	1156	svchost.exe	7
PID 1156 wrote to memory of 260	1156	svchost.exe	7
PID 1156 wrote to memory of 260	1156	svchost.exe	7
PID 1156 wrote to memory of 260	1156	svchost.exe	7
PID 1156 wrote to memory of 260	1156	svchost.exe	7
PID 1156 wrote to memory of 336	1156	svchost.exe	6
PID 1156 wrote to memory of 336	1156	svchost.exe	6
PID 1156 wrote to memory of 336	1156	svchost.exe	6
PID 1156 wrote to memory of 336	1156	svchost.exe	6
PID 1156 wrote to memory of 336	1156	svchost.exe	6
PID 1156 wrote to memory of 372	1156	svchost.exe	5
PID 1156 wrote to memory of 372	1156	svchost.exe	5
PID 1156 wrote to memory of 372	1156	svchost.exe	5
PID 1156 wrote to memory of 372	1156	svchost.exe	5
PID 1156 wrote to memory of 372	1156	svchost.exe	5
PID 1156 wrote to memory of 380	1156	svchost.exe	4
PID 1156 wrote to memory of 380	1156	svchost.exe	4
PID 1156 wrote to memory of 380	1156	svchost.exe	4
PID 1156 wrote to memory of 380	1156	svchost.exe	4
PID 1156 wrote to memory of 380	1156	svchost.exe	4
PID 1156 wrote to memory of 420	1156	svchost.exe	3
PID 1156 wrote to memory of 420	1156	svchost.exe	3
PID 1156 wrote to memory of 420	1156	svchost.exe	3
PID 1156 wrote to memory of 420	1156	svchost.exe	3
PID 1156 wrote to memory of 420	1156	svchost.exe	3
PID 1156 wrote to memory of 468	1156	svchost.exe	2
PID 1156 wrote to memory of 468	1156	svchost.exe	2
PID 1156 wrote to memory of 468	1156	svchost.exe	2
PID 1156 wrote to memory of 468	1156	svchost.exe	2

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
PID:476

C:\Windows\system32\services.exe
C:\Windows\system32\services.exe
1⤵
PID:468
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:804
- - C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    3⤵
    PID:1340
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:800
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:960
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1256
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1040
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:308
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:328
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:876
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:852
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
  2⤵
  PID:740
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:676
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:592

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:420

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:380
- C:\Windows\system32\lsm.exe
  C:\Windows\system32\lsm.exe
  2⤵
  PID:484

C:\Windows\system32\csrss.exe
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
1⤵
PID:372

C:\Windows\system32\csrss.exe
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
1⤵
PID:336

C:\Windows\System32\smss.exe
\SystemRoot\System32\smss.exe
1⤵
PID:260

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1928

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1384
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fef1ec3367c1cdd00a658cc1879d48f1b2408fcd4f25c02b667a8272f24f2a2a.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1168
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\fef1ec3367c1cdd00a658cc1879d48f1b2408fcd4f25c02b667a8272f24f2a2a.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:1124
  - - C:\Windows\SysWOW64\rundll32mgr.exe
      C:\Windows\SysWOW64\rundll32mgr.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Drops file in Program Files directory
      Suspicious use of UnmapMainImage
      Suspicious use of WriteProcessMemory
      PID:1932
    - - C:\Program Files (x86)\Microsoft\WaterMark.exe
        
        "C:\Program Files (x86)\Microsoft\WaterMark.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of UnmapMainImage
        Suspicious use of WriteProcessMemory
        
        PID:1088
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Modifies WinLogon for persistence
        Drops file in System32 directory
        Drops file in Program Files directory
        
        PID:1920
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1156

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

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

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

Filesize
60KB

MD5
f75ba7b0befee8ceca41887a1c08275a

SHA1
c302a11726b67942df47bd592e0f16f4b55e27cd

SHA256
e17884dabe4a9f88f81cb7871f007699cc3f4ee349b12fa11e27750c6097104a

SHA512
23c379ad527f817382f9a38e2fda7cc6e77250289ca079a81a0e690fa8af98db290a55e953108788ecfbb6e1bf2746230c68fa1df513729d72758a782a768673

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

Filesize
60KB

MD5
f75ba7b0befee8ceca41887a1c08275a

SHA1
c302a11726b67942df47bd592e0f16f4b55e27cd

SHA256
e17884dabe4a9f88f81cb7871f007699cc3f4ee349b12fa11e27750c6097104a

SHA512
23c379ad527f817382f9a38e2fda7cc6e77250289ca079a81a0e690fa8af98db290a55e953108788ecfbb6e1bf2746230c68fa1df513729d72758a782a768673

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
60KB

MD5
f75ba7b0befee8ceca41887a1c08275a

SHA1
c302a11726b67942df47bd592e0f16f4b55e27cd

SHA256
e17884dabe4a9f88f81cb7871f007699cc3f4ee349b12fa11e27750c6097104a

SHA512
23c379ad527f817382f9a38e2fda7cc6e77250289ca079a81a0e690fa8af98db290a55e953108788ecfbb6e1bf2746230c68fa1df513729d72758a782a768673

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
60KB

MD5
f75ba7b0befee8ceca41887a1c08275a

SHA1
c302a11726b67942df47bd592e0f16f4b55e27cd

SHA256
e17884dabe4a9f88f81cb7871f007699cc3f4ee349b12fa11e27750c6097104a

SHA512
23c379ad527f817382f9a38e2fda7cc6e77250289ca079a81a0e690fa8af98db290a55e953108788ecfbb6e1bf2746230c68fa1df513729d72758a782a768673

Download Submit
\Program Files (x86)\Microsoft\WaterMark.exe

Filesize
60KB

MD5
f75ba7b0befee8ceca41887a1c08275a

SHA1
c302a11726b67942df47bd592e0f16f4b55e27cd

SHA256
e17884dabe4a9f88f81cb7871f007699cc3f4ee349b12fa11e27750c6097104a

SHA512
23c379ad527f817382f9a38e2fda7cc6e77250289ca079a81a0e690fa8af98db290a55e953108788ecfbb6e1bf2746230c68fa1df513729d72758a782a768673

Download Submit
\Program Files (x86)\Microsoft\WaterMark.exe

Filesize
60KB

MD5
f75ba7b0befee8ceca41887a1c08275a

SHA1
c302a11726b67942df47bd592e0f16f4b55e27cd

SHA256
e17884dabe4a9f88f81cb7871f007699cc3f4ee349b12fa11e27750c6097104a

SHA512
23c379ad527f817382f9a38e2fda7cc6e77250289ca079a81a0e690fa8af98db290a55e953108788ecfbb6e1bf2746230c68fa1df513729d72758a782a768673

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
60KB

MD5
f75ba7b0befee8ceca41887a1c08275a

SHA1
c302a11726b67942df47bd592e0f16f4b55e27cd

SHA256
e17884dabe4a9f88f81cb7871f007699cc3f4ee349b12fa11e27750c6097104a

SHA512
23c379ad527f817382f9a38e2fda7cc6e77250289ca079a81a0e690fa8af98db290a55e953108788ecfbb6e1bf2746230c68fa1df513729d72758a782a768673

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
60KB

MD5
f75ba7b0befee8ceca41887a1c08275a

SHA1
c302a11726b67942df47bd592e0f16f4b55e27cd

SHA256
e17884dabe4a9f88f81cb7871f007699cc3f4ee349b12fa11e27750c6097104a

SHA512
23c379ad527f817382f9a38e2fda7cc6e77250289ca079a81a0e690fa8af98db290a55e953108788ecfbb6e1bf2746230c68fa1df513729d72758a782a768673

Download Submit
memory/1088-86-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1088-195-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1088-88-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1124-55-0x0000000076401000-0x0000000076403000-memory.dmp

Filesize
8KB

Download
memory/1156-90-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1156-93-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1920-87-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1920-82-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1920-78-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1920-196-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1932-70-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1932-64-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1932-63-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download