ramnit | 7d7216180cb381b170bb109c66fec17009987739488f9367f155ad684224de57

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04/12/2022, 02:10

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General

Target

7d7216180cb381b170bb109c66fec17009987739488f9367f155ad684224de57.dll
Size

448KB
MD5

a42721cc7397c003ff00e9a36a310fe0
SHA1

7d971d95410d4f1dac405346ea9187647fd6f829
SHA256

7d7216180cb381b170bb109c66fec17009987739488f9367f155ad684224de57
SHA512

e610b41a170ed7fd2af7bd8ca33e7f08fd5f6e8628317ee484820c70c9c1c9ca530afcb2dad82aea70712a92755995bbc4ccbaad2c25264f0e85e06b0e6e9d23
SSDEEP

12288:fehnaNPpSVZmNxRCwnwm3W3OHIIf5UnDrZ3W:feh0PpS6NxNnwYeOHX+p3W

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
1948	rundll32mgr.exe
1340	WaterMark.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1948-65-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1340-79-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1340-207-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1956	rundll32.exe
1956	rundll32.exe
1948	rundll32mgr.exe
1948	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 10 IoCs

description	ioc	Process
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\pxF95D.tmp	rundll32mgr.exe
File opened for modification	C:\Program Files\7-Zip\7z.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
File opened for modification	C:\Program Files\7-Zip\7z.dll	svchost.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1524	1956	WerFault.exe	28

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1340	WaterMark.exe
1340	WaterMark.exe
1340	WaterMark.exe
1340	WaterMark.exe
1340	WaterMark.exe
1340	WaterMark.exe
1340	WaterMark.exe
1340	WaterMark.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe
608	svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1340	WaterMark.exe
Token: SeDebugPrivilege	608	svchost.exe
Token: SeDebugPrivilege	1956	rundll32.exe
Token: SeDebugPrivilege	1524	WerFault.exe
Token: SeDebugPrivilege	1340	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 1956	1636	rundll32.exe	28
PID 1636 wrote to memory of 1956	1636	rundll32.exe	28
PID 1636 wrote to memory of 1956	1636	rundll32.exe	28
PID 1636 wrote to memory of 1956	1636	rundll32.exe	28
PID 1636 wrote to memory of 1956	1636	rundll32.exe	28
PID 1636 wrote to memory of 1956	1636	rundll32.exe	28
PID 1636 wrote to memory of 1956	1636	rundll32.exe	28
PID 1956 wrote to memory of 1948	1956	rundll32.exe	29
PID 1956 wrote to memory of 1948	1956	rundll32.exe	29
PID 1956 wrote to memory of 1948	1956	rundll32.exe	29
PID 1956 wrote to memory of 1948	1956	rundll32.exe	29
PID 1956 wrote to memory of 1524	1956	rundll32.exe	30
PID 1948 wrote to memory of 1340	1948	rundll32mgr.exe	31
PID 1948 wrote to memory of 1340	1948	rundll32mgr.exe	31
PID 1948 wrote to memory of 1340	1948	rundll32mgr.exe	31
PID 1948 wrote to memory of 1340	1948	rundll32mgr.exe	31
PID 1956 wrote to memory of 1524	1956	rundll32.exe	30
PID 1956 wrote to memory of 1524	1956	rundll32.exe	30
PID 1956 wrote to memory of 1524	1956	rundll32.exe	30
PID 1340 wrote to memory of 1708	1340	WaterMark.exe	32
PID 1340 wrote to memory of 1708	1340	WaterMark.exe	32
PID 1340 wrote to memory of 1708	1340	WaterMark.exe	32
PID 1340 wrote to memory of 1708	1340	WaterMark.exe	32
PID 1340 wrote to memory of 1708	1340	WaterMark.exe	32
PID 1340 wrote to memory of 1708	1340	WaterMark.exe	32
PID 1340 wrote to memory of 1708	1340	WaterMark.exe	32
PID 1340 wrote to memory of 1708	1340	WaterMark.exe	32
PID 1340 wrote to memory of 1708	1340	WaterMark.exe	32
PID 1340 wrote to memory of 1708	1340	WaterMark.exe	32
PID 1340 wrote to memory of 608	1340	WaterMark.exe	33
PID 1340 wrote to memory of 608	1340	WaterMark.exe	33
PID 1340 wrote to memory of 608	1340	WaterMark.exe	33
PID 1340 wrote to memory of 608	1340	WaterMark.exe	33
PID 1340 wrote to memory of 608	1340	WaterMark.exe	33
PID 1340 wrote to memory of 608	1340	WaterMark.exe	33
PID 1340 wrote to memory of 608	1340	WaterMark.exe	33
PID 1340 wrote to memory of 608	1340	WaterMark.exe	33
PID 1340 wrote to memory of 608	1340	WaterMark.exe	33
PID 1340 wrote to memory of 608	1340	WaterMark.exe	33
PID 608 wrote to memory of 260	608	svchost.exe	27
PID 608 wrote to memory of 260	608	svchost.exe	27
PID 608 wrote to memory of 260	608	svchost.exe	27
PID 608 wrote to memory of 260	608	svchost.exe	27
PID 608 wrote to memory of 260	608	svchost.exe	27
PID 608 wrote to memory of 336	608	svchost.exe	26
PID 608 wrote to memory of 336	608	svchost.exe	26
PID 608 wrote to memory of 336	608	svchost.exe	26
PID 608 wrote to memory of 336	608	svchost.exe	26
PID 608 wrote to memory of 336	608	svchost.exe	26
PID 608 wrote to memory of 372	608	svchost.exe	5
PID 608 wrote to memory of 372	608	svchost.exe	5
PID 608 wrote to memory of 372	608	svchost.exe	5
PID 608 wrote to memory of 372	608	svchost.exe	5
PID 608 wrote to memory of 372	608	svchost.exe	5
PID 608 wrote to memory of 384	608	svchost.exe	4
PID 608 wrote to memory of 384	608	svchost.exe	4
PID 608 wrote to memory of 384	608	svchost.exe	4
PID 608 wrote to memory of 384	608	svchost.exe	4
PID 608 wrote to memory of 384	608	svchost.exe	4
PID 608 wrote to memory of 420	608	svchost.exe	3
PID 608 wrote to memory of 420	608	svchost.exe	3
PID 608 wrote to memory of 420	608	svchost.exe	3
PID 608 wrote to memory of 420	608	svchost.exe	3
PID 608 wrote to memory of 420	608	svchost.exe	3

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:472
- 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:1164
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1120
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1032
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1772
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1076
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:744
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:300
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:888
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:836
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
  2⤵
  PID:760
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:672
- 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\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:384

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:372
- C:\Windows\system32\lsm.exe
  C:\Windows\system32\lsm.exe
  2⤵
  PID:488

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1992

C:\Windows\system32\wbem\wmiprvse.exe
C:\Windows\system32\wbem\wmiprvse.exe
1⤵
PID:2036

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7d7216180cb381b170bb109c66fec17009987739488f9367f155ad684224de57.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7d7216180cb381b170bb109c66fec17009987739488f9367f155ad684224de57.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1956
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:1948
  - - C:\Program Files (x86)\Microsoft\WaterMark.exe
      "C:\Program Files (x86)\Microsoft\WaterMark.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1340
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        Modifies WinLogon for persistence
        Drops file in System32 directory
        Drops file in Program Files directory
        
        PID:1708
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:608
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 228
    3⤵
    - Program crash
    - Suspicious use of AdjustPrivilegeToken
    PID:1524

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1196

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

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
65KB

MD5
a9ea94ee4a3bb43d4057823b2072dc54

SHA1
94ade3c34ec08613daba8a1240586c24f8169794

SHA256
7edbb67a880d90e53ec7949c4907f4ccf5596899b98ed8651b01a485a7b06789

SHA512
0ae24a452c474a0b67eb17ceb78eabc46aad7f04a249d526cbd1bf25ccc94016133ee6cdd1cf342fa3c8dbff60372d18df56137a6c0303bbaee07f005f930ab5

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

Filesize
65KB

MD5
a9ea94ee4a3bb43d4057823b2072dc54

SHA1
94ade3c34ec08613daba8a1240586c24f8169794

SHA256
7edbb67a880d90e53ec7949c4907f4ccf5596899b98ed8651b01a485a7b06789

SHA512
0ae24a452c474a0b67eb17ceb78eabc46aad7f04a249d526cbd1bf25ccc94016133ee6cdd1cf342fa3c8dbff60372d18df56137a6c0303bbaee07f005f930ab5

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

Filesize
65KB

MD5
a9ea94ee4a3bb43d4057823b2072dc54

SHA1
94ade3c34ec08613daba8a1240586c24f8169794

SHA256
7edbb67a880d90e53ec7949c4907f4ccf5596899b98ed8651b01a485a7b06789

SHA512
0ae24a452c474a0b67eb17ceb78eabc46aad7f04a249d526cbd1bf25ccc94016133ee6cdd1cf342fa3c8dbff60372d18df56137a6c0303bbaee07f005f930ab5

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

Filesize
65KB

MD5
a9ea94ee4a3bb43d4057823b2072dc54

SHA1
94ade3c34ec08613daba8a1240586c24f8169794

SHA256
7edbb67a880d90e53ec7949c4907f4ccf5596899b98ed8651b01a485a7b06789

SHA512
0ae24a452c474a0b67eb17ceb78eabc46aad7f04a249d526cbd1bf25ccc94016133ee6cdd1cf342fa3c8dbff60372d18df56137a6c0303bbaee07f005f930ab5

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

Filesize
65KB

MD5
a9ea94ee4a3bb43d4057823b2072dc54

SHA1
94ade3c34ec08613daba8a1240586c24f8169794

SHA256
7edbb67a880d90e53ec7949c4907f4ccf5596899b98ed8651b01a485a7b06789

SHA512
0ae24a452c474a0b67eb17ceb78eabc46aad7f04a249d526cbd1bf25ccc94016133ee6cdd1cf342fa3c8dbff60372d18df56137a6c0303bbaee07f005f930ab5

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

Filesize
65KB

MD5
a9ea94ee4a3bb43d4057823b2072dc54

SHA1
94ade3c34ec08613daba8a1240586c24f8169794

SHA256
7edbb67a880d90e53ec7949c4907f4ccf5596899b98ed8651b01a485a7b06789

SHA512
0ae24a452c474a0b67eb17ceb78eabc46aad7f04a249d526cbd1bf25ccc94016133ee6cdd1cf342fa3c8dbff60372d18df56137a6c0303bbaee07f005f930ab5

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
65KB

MD5
a9ea94ee4a3bb43d4057823b2072dc54

SHA1
94ade3c34ec08613daba8a1240586c24f8169794

SHA256
7edbb67a880d90e53ec7949c4907f4ccf5596899b98ed8651b01a485a7b06789

SHA512
0ae24a452c474a0b67eb17ceb78eabc46aad7f04a249d526cbd1bf25ccc94016133ee6cdd1cf342fa3c8dbff60372d18df56137a6c0303bbaee07f005f930ab5

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
65KB

MD5
a9ea94ee4a3bb43d4057823b2072dc54

SHA1
94ade3c34ec08613daba8a1240586c24f8169794

SHA256
7edbb67a880d90e53ec7949c4907f4ccf5596899b98ed8651b01a485a7b06789

SHA512
0ae24a452c474a0b67eb17ceb78eabc46aad7f04a249d526cbd1bf25ccc94016133ee6cdd1cf342fa3c8dbff60372d18df56137a6c0303bbaee07f005f930ab5

Download Submit
memory/608-85-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/608-82-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1340-207-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1340-79-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1708-80-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1708-208-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1708-70-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1708-74-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1948-65-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1948-68-0x0000000000220000-0x0000000000241000-memory.dmp

Filesize
132KB

Download
memory/1956-55-0x00000000762F1000-0x00000000762F3000-memory.dmp

Filesize
8KB

Download
memory/1956-78-0x0000000010000000-0x0000000010072000-memory.dmp

Filesize
456KB

Download
memory/1956-885-0x0000000010000000-0x0000000010072000-memory.dmp

Filesize
456KB

Download