ramnit | cc878688122b40ca6ed03730e319ce5a48e318442423df7505196bba6a4bc6d5

Analysis

max time kernel
170s
max time network
160s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
29/11/2022, 07:41

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General

Target

cc878688122b40ca6ed03730e319ce5a48e318442423df7505196bba6a4bc6d5.dll
Size

264KB
MD5

45c8b34daa550fde1f82a2acccda5f07
SHA1

fcc639efb6d02a1dea64650fcfd913fd2393a759
SHA256

cc878688122b40ca6ed03730e319ce5a48e318442423df7505196bba6a4bc6d5
SHA512

ac114f6761fd9a2f7693bf9ea75238f9a3e8a7a3e505072f5217eb73d05ae1408825687949bc0335461df4867059c0c5a4f47b732cf81523dcc51b353d815e09
SSDEEP

3072:VdcQ2ZNMSQvbajUTUItjT68+xQUpr/lIylK8ZUaUubSG7cEe0XjQS+JxjwoDjlaF:lATSOjUQK4rtIylKC55IE3XkFjJDhaF

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
1292	rundll32mgr.exe
832	WaterMark.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1292-62-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1292-63-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1292-69-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/832-84-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/832-192-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1492	rundll32.exe
1492	rundll32.exe
1292	rundll32mgr.exe
1292	rundll32mgr.exe

Drops file in System32 directory 3 IoCs

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

Drops file in Program Files directory 8 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\7-Zip\7-zip32.dll	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7z.dll	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px8FD2.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 (x86)\Microsoft\WaterMark.exe	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7-zip.dll	svchost.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
832	WaterMark.exe
832	WaterMark.exe
832	WaterMark.exe
832	WaterMark.exe
832	WaterMark.exe
832	WaterMark.exe
832	WaterMark.exe
832	WaterMark.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	832	WaterMark.exe
Token: SeDebugPrivilege	1588	svchost.exe
Token: SeDebugPrivilege	832	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1292	rundll32mgr.exe
832	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 1492	1940	rundll32.exe	27
PID 1940 wrote to memory of 1492	1940	rundll32.exe	27
PID 1940 wrote to memory of 1492	1940	rundll32.exe	27
PID 1940 wrote to memory of 1492	1940	rundll32.exe	27
PID 1940 wrote to memory of 1492	1940	rundll32.exe	27
PID 1940 wrote to memory of 1492	1940	rundll32.exe	27
PID 1940 wrote to memory of 1492	1940	rundll32.exe	27
PID 1492 wrote to memory of 1292	1492	rundll32.exe	28
PID 1492 wrote to memory of 1292	1492	rundll32.exe	28
PID 1492 wrote to memory of 1292	1492	rundll32.exe	28
PID 1492 wrote to memory of 1292	1492	rundll32.exe	28
PID 1292 wrote to memory of 832	1292	rundll32mgr.exe	29
PID 1292 wrote to memory of 832	1292	rundll32mgr.exe	29
PID 1292 wrote to memory of 832	1292	rundll32mgr.exe	29
PID 1292 wrote to memory of 832	1292	rundll32mgr.exe	29
PID 832 wrote to memory of 1088	832	WaterMark.exe	30
PID 832 wrote to memory of 1088	832	WaterMark.exe	30
PID 832 wrote to memory of 1088	832	WaterMark.exe	30
PID 832 wrote to memory of 1088	832	WaterMark.exe	30
PID 832 wrote to memory of 1088	832	WaterMark.exe	30
PID 832 wrote to memory of 1088	832	WaterMark.exe	30
PID 832 wrote to memory of 1088	832	WaterMark.exe	30
PID 832 wrote to memory of 1088	832	WaterMark.exe	30
PID 832 wrote to memory of 1088	832	WaterMark.exe	30
PID 832 wrote to memory of 1088	832	WaterMark.exe	30
PID 832 wrote to memory of 1588	832	WaterMark.exe	31
PID 832 wrote to memory of 1588	832	WaterMark.exe	31
PID 832 wrote to memory of 1588	832	WaterMark.exe	31
PID 832 wrote to memory of 1588	832	WaterMark.exe	31
PID 832 wrote to memory of 1588	832	WaterMark.exe	31
PID 832 wrote to memory of 1588	832	WaterMark.exe	31
PID 832 wrote to memory of 1588	832	WaterMark.exe	31
PID 832 wrote to memory of 1588	832	WaterMark.exe	31
PID 832 wrote to memory of 1588	832	WaterMark.exe	31
PID 832 wrote to memory of 1588	832	WaterMark.exe	31
PID 1588 wrote to memory of 260	1588	svchost.exe	7
PID 1588 wrote to memory of 260	1588	svchost.exe	7
PID 1588 wrote to memory of 260	1588	svchost.exe	7
PID 1588 wrote to memory of 260	1588	svchost.exe	7
PID 1588 wrote to memory of 260	1588	svchost.exe	7
PID 1588 wrote to memory of 332	1588	svchost.exe	6
PID 1588 wrote to memory of 332	1588	svchost.exe	6
PID 1588 wrote to memory of 332	1588	svchost.exe	6
PID 1588 wrote to memory of 332	1588	svchost.exe	6
PID 1588 wrote to memory of 332	1588	svchost.exe	6
PID 1588 wrote to memory of 368	1588	svchost.exe	5
PID 1588 wrote to memory of 368	1588	svchost.exe	5
PID 1588 wrote to memory of 368	1588	svchost.exe	5
PID 1588 wrote to memory of 368	1588	svchost.exe	5
PID 1588 wrote to memory of 368	1588	svchost.exe	5
PID 1588 wrote to memory of 380	1588	svchost.exe	4
PID 1588 wrote to memory of 380	1588	svchost.exe	4
PID 1588 wrote to memory of 380	1588	svchost.exe	4
PID 1588 wrote to memory of 380	1588	svchost.exe	4
PID 1588 wrote to memory of 380	1588	svchost.exe	4
PID 1588 wrote to memory of 416	1588	svchost.exe	3
PID 1588 wrote to memory of 416	1588	svchost.exe	3
PID 1588 wrote to memory of 416	1588	svchost.exe	3
PID 1588 wrote to memory of 416	1588	svchost.exe	3
PID 1588 wrote to memory of 416	1588	svchost.exe	3
PID 1588 wrote to memory of 464	1588	svchost.exe	2
PID 1588 wrote to memory of 464	1588	svchost.exe	2
PID 1588 wrote to memory of 464	1588	svchost.exe	2
PID 1588 wrote to memory of 464	1588	svchost.exe	2

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
PID:480

C:\Windows\system32\services.exe
C:\Windows\system32\services.exe
1⤵
PID:464
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:676
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1800
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:764
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1228
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1056
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:540
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:296
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:884
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:860
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:812
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
  2⤵
  PID:752
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:600

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:416

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:380

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:368
- C:\Windows\system32\lsm.exe
  C:\Windows\system32\lsm.exe
  2⤵
  PID:488

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:332

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:1988

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1360
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\cc878688122b40ca6ed03730e319ce5a48e318442423df7505196bba6a4bc6d5.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1940
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\cc878688122b40ca6ed03730e319ce5a48e318442423df7505196bba6a4bc6d5.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:1492
  - - 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:1292
    - - 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:832
      - 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:1088
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1588

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1316

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
112KB

MD5
9767edb24505caa3f9615ba0414e44ff

SHA1
42c91f4dc19dbad863845d4546731dfd5e6e9c14

SHA256
5252232bda9f69119eace43194c74bb666bc32c5ec2012cb8a4f52750a534827

SHA512
b9e733958c27537d2af9b933ffff4c2d52e067506b0e9aa2e51d16ef4cfaa28f163675e9b5c970993149ce7d3f5a796b5855bed18ae43d37535c4da4873f8644

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

Filesize
112KB

MD5
9767edb24505caa3f9615ba0414e44ff

SHA1
42c91f4dc19dbad863845d4546731dfd5e6e9c14

SHA256
5252232bda9f69119eace43194c74bb666bc32c5ec2012cb8a4f52750a534827

SHA512
b9e733958c27537d2af9b933ffff4c2d52e067506b0e9aa2e51d16ef4cfaa28f163675e9b5c970993149ce7d3f5a796b5855bed18ae43d37535c4da4873f8644

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

Filesize
112KB

MD5
9767edb24505caa3f9615ba0414e44ff

SHA1
42c91f4dc19dbad863845d4546731dfd5e6e9c14

SHA256
5252232bda9f69119eace43194c74bb666bc32c5ec2012cb8a4f52750a534827

SHA512
b9e733958c27537d2af9b933ffff4c2d52e067506b0e9aa2e51d16ef4cfaa28f163675e9b5c970993149ce7d3f5a796b5855bed18ae43d37535c4da4873f8644

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

Filesize
112KB

MD5
9767edb24505caa3f9615ba0414e44ff

SHA1
42c91f4dc19dbad863845d4546731dfd5e6e9c14

SHA256
5252232bda9f69119eace43194c74bb666bc32c5ec2012cb8a4f52750a534827

SHA512
b9e733958c27537d2af9b933ffff4c2d52e067506b0e9aa2e51d16ef4cfaa28f163675e9b5c970993149ce7d3f5a796b5855bed18ae43d37535c4da4873f8644

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

Filesize
112KB

MD5
9767edb24505caa3f9615ba0414e44ff

SHA1
42c91f4dc19dbad863845d4546731dfd5e6e9c14

SHA256
5252232bda9f69119eace43194c74bb666bc32c5ec2012cb8a4f52750a534827

SHA512
b9e733958c27537d2af9b933ffff4c2d52e067506b0e9aa2e51d16ef4cfaa28f163675e9b5c970993149ce7d3f5a796b5855bed18ae43d37535c4da4873f8644

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

Filesize
112KB

MD5
9767edb24505caa3f9615ba0414e44ff

SHA1
42c91f4dc19dbad863845d4546731dfd5e6e9c14

SHA256
5252232bda9f69119eace43194c74bb666bc32c5ec2012cb8a4f52750a534827

SHA512
b9e733958c27537d2af9b933ffff4c2d52e067506b0e9aa2e51d16ef4cfaa28f163675e9b5c970993149ce7d3f5a796b5855bed18ae43d37535c4da4873f8644

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
112KB

MD5
9767edb24505caa3f9615ba0414e44ff

SHA1
42c91f4dc19dbad863845d4546731dfd5e6e9c14

SHA256
5252232bda9f69119eace43194c74bb666bc32c5ec2012cb8a4f52750a534827

SHA512
b9e733958c27537d2af9b933ffff4c2d52e067506b0e9aa2e51d16ef4cfaa28f163675e9b5c970993149ce7d3f5a796b5855bed18ae43d37535c4da4873f8644

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
112KB

MD5
9767edb24505caa3f9615ba0414e44ff

SHA1
42c91f4dc19dbad863845d4546731dfd5e6e9c14

SHA256
5252232bda9f69119eace43194c74bb666bc32c5ec2012cb8a4f52750a534827

SHA512
b9e733958c27537d2af9b933ffff4c2d52e067506b0e9aa2e51d16ef4cfaa28f163675e9b5c970993149ce7d3f5a796b5855bed18ae43d37535c4da4873f8644

Download Submit
memory/832-192-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/832-84-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1088-85-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1088-193-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1088-76-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1088-80-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1292-63-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1292-62-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1292-69-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1492-55-0x0000000075B41000-0x0000000075B43000-memory.dmp

Filesize
8KB

Download
memory/1588-90-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1588-87-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download