ramnit | 69cc84e019560b1ad8540f167cea60d5cf64e5b64adecfc6741136d4d6c8e29c

Analysis

max time kernel
151s
max time network
132s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04-12-2022 02:15

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General

Target

69cc84e019560b1ad8540f167cea60d5cf64e5b64adecfc6741136d4d6c8e29c.dll
Size

448KB
MD5

d229c3a7abd79e7e0202293d85e4b570
SHA1

a5df0fc7609cd5e7df98b5ca42afd9e183ebf316
SHA256

69cc84e019560b1ad8540f167cea60d5cf64e5b64adecfc6741136d4d6c8e29c
SHA512

253a3ebee5161e0412bfaeb9d8a25ad10f428c3d3725667921875823cfe6887aea9520c68c27bf50db7f03d696490d4fa93397fcad1b57c0180193c6c8f6cbfc
SSDEEP

12288:FehnaNPpSVZmNxRCwnwm3W3OHIIf5SnF/C0:Feh0PpS6NxNnwYeOHX0ntC0

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
316	rundll32mgr.exe
1896	WaterMark.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/316-66-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1896-79-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1896-203-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
304	rundll32.exe
304	rundll32.exe
316	rundll32mgr.exe
316	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\7-zip32.dll	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7zFM.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\7z.dll	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7z.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\pxD79.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1280	304	WerFault.exe	27

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1896	WaterMark.exe
1896	WaterMark.exe
1896	WaterMark.exe
1896	WaterMark.exe
1896	WaterMark.exe
1896	WaterMark.exe
1896	WaterMark.exe
1896	WaterMark.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe
1740	svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1896	WaterMark.exe
Token: SeDebugPrivilege	1740	svchost.exe
Token: SeDebugPrivilege	304	rundll32.exe
Token: SeDebugPrivilege	1280	WerFault.exe
Token: SeDebugPrivilege	1896	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1572 wrote to memory of 304	1572	rundll32.exe	27
PID 1572 wrote to memory of 304	1572	rundll32.exe	27
PID 1572 wrote to memory of 304	1572	rundll32.exe	27
PID 1572 wrote to memory of 304	1572	rundll32.exe	27
PID 1572 wrote to memory of 304	1572	rundll32.exe	27
PID 1572 wrote to memory of 304	1572	rundll32.exe	27
PID 1572 wrote to memory of 304	1572	rundll32.exe	27
PID 304 wrote to memory of 316	304	rundll32.exe	28
PID 304 wrote to memory of 316	304	rundll32.exe	28
PID 304 wrote to memory of 316	304	rundll32.exe	28
PID 304 wrote to memory of 316	304	rundll32.exe	28
PID 304 wrote to memory of 1280	304	rundll32.exe	29
PID 304 wrote to memory of 1280	304	rundll32.exe	29
PID 304 wrote to memory of 1280	304	rundll32.exe	29
PID 304 wrote to memory of 1280	304	rundll32.exe	29
PID 316 wrote to memory of 1896	316	rundll32mgr.exe	30
PID 316 wrote to memory of 1896	316	rundll32mgr.exe	30
PID 316 wrote to memory of 1896	316	rundll32mgr.exe	30
PID 316 wrote to memory of 1896	316	rundll32mgr.exe	30
PID 1896 wrote to memory of 1480	1896	WaterMark.exe	31
PID 1896 wrote to memory of 1480	1896	WaterMark.exe	31
PID 1896 wrote to memory of 1480	1896	WaterMark.exe	31
PID 1896 wrote to memory of 1480	1896	WaterMark.exe	31
PID 1896 wrote to memory of 1480	1896	WaterMark.exe	31
PID 1896 wrote to memory of 1480	1896	WaterMark.exe	31
PID 1896 wrote to memory of 1480	1896	WaterMark.exe	31
PID 1896 wrote to memory of 1480	1896	WaterMark.exe	31
PID 1896 wrote to memory of 1480	1896	WaterMark.exe	31
PID 1896 wrote to memory of 1480	1896	WaterMark.exe	31
PID 1896 wrote to memory of 1740	1896	WaterMark.exe	32
PID 1896 wrote to memory of 1740	1896	WaterMark.exe	32
PID 1896 wrote to memory of 1740	1896	WaterMark.exe	32
PID 1896 wrote to memory of 1740	1896	WaterMark.exe	32
PID 1896 wrote to memory of 1740	1896	WaterMark.exe	32
PID 1896 wrote to memory of 1740	1896	WaterMark.exe	32
PID 1896 wrote to memory of 1740	1896	WaterMark.exe	32
PID 1896 wrote to memory of 1740	1896	WaterMark.exe	32
PID 1896 wrote to memory of 1740	1896	WaterMark.exe	32
PID 1896 wrote to memory of 1740	1896	WaterMark.exe	32
PID 1740 wrote to memory of 260	1740	svchost.exe	25
PID 1740 wrote to memory of 260	1740	svchost.exe	25
PID 1740 wrote to memory of 260	1740	svchost.exe	25
PID 1740 wrote to memory of 260	1740	svchost.exe	25
PID 1740 wrote to memory of 260	1740	svchost.exe	25
PID 1740 wrote to memory of 332	1740	svchost.exe	24
PID 1740 wrote to memory of 332	1740	svchost.exe	24
PID 1740 wrote to memory of 332	1740	svchost.exe	24
PID 1740 wrote to memory of 332	1740	svchost.exe	24
PID 1740 wrote to memory of 332	1740	svchost.exe	24
PID 1740 wrote to memory of 368	1740	svchost.exe	5
PID 1740 wrote to memory of 368	1740	svchost.exe	5
PID 1740 wrote to memory of 368	1740	svchost.exe	5
PID 1740 wrote to memory of 368	1740	svchost.exe	5
PID 1740 wrote to memory of 368	1740	svchost.exe	5
PID 1740 wrote to memory of 376	1740	svchost.exe	4
PID 1740 wrote to memory of 376	1740	svchost.exe	4
PID 1740 wrote to memory of 376	1740	svchost.exe	4
PID 1740 wrote to memory of 376	1740	svchost.exe	4
PID 1740 wrote to memory of 376	1740	svchost.exe	4
PID 1740 wrote to memory of 416	1740	svchost.exe	3
PID 1740 wrote to memory of 416	1740	svchost.exe	3
PID 1740 wrote to memory of 416	1740	svchost.exe	3
PID 1740 wrote to memory of 416	1740	svchost.exe	3
PID 1740 wrote to memory of 416	1740	svchost.exe	3

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:460
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1676
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1512
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1260
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1032
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:276
- 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:872
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:844
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:796
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
  2⤵
  PID:732
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:652
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:576

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:376

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:368
- C:\Windows\system32\lsm.exe
  C:\Windows\system32\lsm.exe
  2⤵
  PID:484

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1088

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1420
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\69cc84e019560b1ad8540f167cea60d5cf64e5b64adecfc6741136d4d6c8e29c.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1572
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\69cc84e019560b1ad8540f167cea60d5cf64e5b64adecfc6741136d4d6c8e29c.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:304
  - - 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 WriteProcessMemory
      PID:316
    - - 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 WriteProcessMemory
        
        PID:1896
      - 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:1480
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1740
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 304 -s 228
      4⤵
      Program crash
      Suspicious use of AdjustPrivilegeToken
      PID:1280

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1364

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

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/304-78-0x0000000010000000-0x0000000010072000-memory.dmp

Filesize
456KB

Download
memory/304-877-0x0000000010000000-0x0000000010072000-memory.dmp

Filesize
456KB

Download
memory/304-55-0x0000000076121000-0x0000000076123000-memory.dmp

Filesize
8KB

Download
memory/304-54-0x0000000000000000-mapping.dmp

Download
memory/316-67-0x0000000000220000-0x0000000000241000-memory.dmp

Filesize
132KB

Download
memory/316-66-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/316-58-0x0000000000000000-mapping.dmp

Download
memory/1280-62-0x0000000000000000-mapping.dmp

Download
memory/1480-74-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1480-72-0x0000000000000000-mapping.dmp

Download
memory/1480-70-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1480-80-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1480-204-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1740-82-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1740-84-0x0000000000000000-mapping.dmp

Download
memory/1740-85-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1896-79-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1896-203-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1896-64-0x0000000000000000-mapping.dmp

Download