ramnit | 57fe1cd8ecd2ae5d4958a23d095d70eb7d12962a75c4a96b06a06fce5b374142

Analysis

max time kernel
150s
max time network
124s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
21-11-2022 10:57

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General

Target

57fe1cd8ecd2ae5d4958a23d095d70eb7d12962a75c4a96b06a06fce5b374142.dll
Size

2.4MB
MD5

09d7366768dbd47e18b36207d7c7c50c
SHA1

8ad6942197b45293fa6ec4e6d051fc8ed7a6cc95
SHA256

57fe1cd8ecd2ae5d4958a23d095d70eb7d12962a75c4a96b06a06fce5b374142
SHA512

4fb3b9f9b25e07c36ab657453a22e2711cb849412cc112209ce0b2aeda6c7d77f32bde5bab5945ce78fc1b261ca1007ff35c5b6160621851c96afe5441bec9e4
SSDEEP

49152:rU3U+ZYmxjpv7x4GFM/+b8dTMNh9Wr73h7NXSWEqNJO5hYTVMCRisKEOe4:riU2YmxjpDx4Zo8dYNh9q73h7NXYkRit

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
1164	rundll32mgr.exe
1424	WaterMark.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1164-62-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1164-64-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1164-70-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1424-88-0x0000000000400000-0x0000000000443000-memory.dmp	upx
behavioral1/memory/1424-216-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
992	rundll32.exe
992	rundll32.exe
1164	rundll32mgr.exe
1164	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 created	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-zip32.dll	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7zFM.exe	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\pxF577.tmp	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1908	992	WerFault.exe	28

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1424	WaterMark.exe
1424	WaterMark.exe
1424	WaterMark.exe
1424	WaterMark.exe
1424	WaterMark.exe
1424	WaterMark.exe
1424	WaterMark.exe
1424	WaterMark.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe
1184	svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1424	WaterMark.exe
Token: SeDebugPrivilege	1184	svchost.exe
Token: SeDebugPrivilege	992	rundll32.exe
Token: SeDebugPrivilege	1908	WerFault.exe
Token: SeDebugPrivilege	1424	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1164	rundll32mgr.exe
1424	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 240 wrote to memory of 992	240	rundll32.exe	28
PID 240 wrote to memory of 992	240	rundll32.exe	28
PID 240 wrote to memory of 992	240	rundll32.exe	28
PID 240 wrote to memory of 992	240	rundll32.exe	28
PID 240 wrote to memory of 992	240	rundll32.exe	28
PID 240 wrote to memory of 992	240	rundll32.exe	28
PID 240 wrote to memory of 992	240	rundll32.exe	28
PID 992 wrote to memory of 1164	992	rundll32.exe	29
PID 992 wrote to memory of 1164	992	rundll32.exe	29
PID 992 wrote to memory of 1164	992	rundll32.exe	29
PID 992 wrote to memory of 1164	992	rundll32.exe	29
PID 992 wrote to memory of 1908	992	rundll32.exe	30
PID 992 wrote to memory of 1908	992	rundll32.exe	30
PID 992 wrote to memory of 1908	992	rundll32.exe	30
PID 992 wrote to memory of 1908	992	rundll32.exe	30
PID 1164 wrote to memory of 1424	1164	rundll32mgr.exe	31
PID 1164 wrote to memory of 1424	1164	rundll32mgr.exe	31
PID 1164 wrote to memory of 1424	1164	rundll32mgr.exe	31
PID 1164 wrote to memory of 1424	1164	rundll32mgr.exe	31
PID 1424 wrote to memory of 904	1424	WaterMark.exe	32
PID 1424 wrote to memory of 904	1424	WaterMark.exe	32
PID 1424 wrote to memory of 904	1424	WaterMark.exe	32
PID 1424 wrote to memory of 904	1424	WaterMark.exe	32
PID 1424 wrote to memory of 904	1424	WaterMark.exe	32
PID 1424 wrote to memory of 904	1424	WaterMark.exe	32
PID 1424 wrote to memory of 904	1424	WaterMark.exe	32
PID 1424 wrote to memory of 904	1424	WaterMark.exe	32
PID 1424 wrote to memory of 904	1424	WaterMark.exe	32
PID 1424 wrote to memory of 904	1424	WaterMark.exe	32
PID 1424 wrote to memory of 1184	1424	WaterMark.exe	33
PID 1424 wrote to memory of 1184	1424	WaterMark.exe	33
PID 1424 wrote to memory of 1184	1424	WaterMark.exe	33
PID 1424 wrote to memory of 1184	1424	WaterMark.exe	33
PID 1424 wrote to memory of 1184	1424	WaterMark.exe	33
PID 1424 wrote to memory of 1184	1424	WaterMark.exe	33
PID 1424 wrote to memory of 1184	1424	WaterMark.exe	33
PID 1424 wrote to memory of 1184	1424	WaterMark.exe	33
PID 1424 wrote to memory of 1184	1424	WaterMark.exe	33
PID 1424 wrote to memory of 1184	1424	WaterMark.exe	33
PID 1184 wrote to memory of 260	1184	svchost.exe	7
PID 1184 wrote to memory of 260	1184	svchost.exe	7
PID 1184 wrote to memory of 260	1184	svchost.exe	7
PID 1184 wrote to memory of 260	1184	svchost.exe	7
PID 1184 wrote to memory of 260	1184	svchost.exe	7
PID 1184 wrote to memory of 336	1184	svchost.exe	6
PID 1184 wrote to memory of 336	1184	svchost.exe	6
PID 1184 wrote to memory of 336	1184	svchost.exe	6
PID 1184 wrote to memory of 336	1184	svchost.exe	6
PID 1184 wrote to memory of 336	1184	svchost.exe	6
PID 1184 wrote to memory of 372	1184	svchost.exe	5
PID 1184 wrote to memory of 372	1184	svchost.exe	5
PID 1184 wrote to memory of 372	1184	svchost.exe	5
PID 1184 wrote to memory of 372	1184	svchost.exe	5
PID 1184 wrote to memory of 372	1184	svchost.exe	5
PID 1184 wrote to memory of 384	1184	svchost.exe	4
PID 1184 wrote to memory of 384	1184	svchost.exe	4
PID 1184 wrote to memory of 384	1184	svchost.exe	4
PID 1184 wrote to memory of 384	1184	svchost.exe	4
PID 1184 wrote to memory of 384	1184	svchost.exe	4
PID 1184 wrote to memory of 420	1184	svchost.exe	3
PID 1184 wrote to memory of 420	1184	svchost.exe	3
PID 1184 wrote to memory of 420	1184	svchost.exe	3
PID 1184 wrote to memory of 420	1184	svchost.exe	3
PID 1184 wrote to memory of 420	1184	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:464
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:456
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1216
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1812
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1300
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1040
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:344
- 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:852
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:800
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
  2⤵
  PID:748
- 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:596

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\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\wmiprvse.exe
C:\Windows\system32\wbem\wmiprvse.exe
1⤵
PID:1940

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:2028

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1432
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\57fe1cd8ecd2ae5d4958a23d095d70eb7d12962a75c4a96b06a06fce5b374142.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:240
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\57fe1cd8ecd2ae5d4958a23d095d70eb7d12962a75c4a96b06a06fce5b374142.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:992
  - - 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:1164
    - - 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:1424
      - 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:904
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1184
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 992 -s 232
      4⤵
      Program crash
      Suspicious use of AdjustPrivilegeToken
      PID:1908

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1360

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
223KB

MD5
5303a51f9350ebb6407d36480254c47a

SHA1
0ae8e565a289e6fe5065e2d99f7460cc94a2828a

SHA256
732d09867a1351a8d1e2b94a4d1013a058bdae5e3339e0b67be233c4e65b75f8

SHA512
19e03f8ff24314bc1ea18b57bc93203d376b9364db759966ce69651c69a8c84c821616a8d18a98e0b98e7656df294cb4387b8787253dc1686a78e52cbfb1797d

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

Filesize
223KB

MD5
5303a51f9350ebb6407d36480254c47a

SHA1
0ae8e565a289e6fe5065e2d99f7460cc94a2828a

SHA256
732d09867a1351a8d1e2b94a4d1013a058bdae5e3339e0b67be233c4e65b75f8

SHA512
19e03f8ff24314bc1ea18b57bc93203d376b9364db759966ce69651c69a8c84c821616a8d18a98e0b98e7656df294cb4387b8787253dc1686a78e52cbfb1797d

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

Filesize
223KB

MD5
5303a51f9350ebb6407d36480254c47a

SHA1
0ae8e565a289e6fe5065e2d99f7460cc94a2828a

SHA256
732d09867a1351a8d1e2b94a4d1013a058bdae5e3339e0b67be233c4e65b75f8

SHA512
19e03f8ff24314bc1ea18b57bc93203d376b9364db759966ce69651c69a8c84c821616a8d18a98e0b98e7656df294cb4387b8787253dc1686a78e52cbfb1797d

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

Filesize
223KB

MD5
5303a51f9350ebb6407d36480254c47a

SHA1
0ae8e565a289e6fe5065e2d99f7460cc94a2828a

SHA256
732d09867a1351a8d1e2b94a4d1013a058bdae5e3339e0b67be233c4e65b75f8

SHA512
19e03f8ff24314bc1ea18b57bc93203d376b9364db759966ce69651c69a8c84c821616a8d18a98e0b98e7656df294cb4387b8787253dc1686a78e52cbfb1797d

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

Filesize
223KB

MD5
5303a51f9350ebb6407d36480254c47a

SHA1
0ae8e565a289e6fe5065e2d99f7460cc94a2828a

SHA256
732d09867a1351a8d1e2b94a4d1013a058bdae5e3339e0b67be233c4e65b75f8

SHA512
19e03f8ff24314bc1ea18b57bc93203d376b9364db759966ce69651c69a8c84c821616a8d18a98e0b98e7656df294cb4387b8787253dc1686a78e52cbfb1797d

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

Filesize
223KB

MD5
5303a51f9350ebb6407d36480254c47a

SHA1
0ae8e565a289e6fe5065e2d99f7460cc94a2828a

SHA256
732d09867a1351a8d1e2b94a4d1013a058bdae5e3339e0b67be233c4e65b75f8

SHA512
19e03f8ff24314bc1ea18b57bc93203d376b9364db759966ce69651c69a8c84c821616a8d18a98e0b98e7656df294cb4387b8787253dc1686a78e52cbfb1797d

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
223KB

MD5
5303a51f9350ebb6407d36480254c47a

SHA1
0ae8e565a289e6fe5065e2d99f7460cc94a2828a

SHA256
732d09867a1351a8d1e2b94a4d1013a058bdae5e3339e0b67be233c4e65b75f8

SHA512
19e03f8ff24314bc1ea18b57bc93203d376b9364db759966ce69651c69a8c84c821616a8d18a98e0b98e7656df294cb4387b8787253dc1686a78e52cbfb1797d

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
223KB

MD5
5303a51f9350ebb6407d36480254c47a

SHA1
0ae8e565a289e6fe5065e2d99f7460cc94a2828a

SHA256
732d09867a1351a8d1e2b94a4d1013a058bdae5e3339e0b67be233c4e65b75f8

SHA512
19e03f8ff24314bc1ea18b57bc93203d376b9364db759966ce69651c69a8c84c821616a8d18a98e0b98e7656df294cb4387b8787253dc1686a78e52cbfb1797d

Download Submit
memory/904-77-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/904-79-0x0000000000000000-mapping.dmp

Download
memory/904-81-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/904-89-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/904-217-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/992-87-0x0000000000800000-0x0000000000843000-memory.dmp

Filesize
268KB

Download
memory/992-85-0x0000000008000000-0x0000000008273000-memory.dmp

Filesize
2.4MB

Download
memory/992-55-0x0000000075DA1000-0x0000000075DA3000-memory.dmp

Filesize
8KB

Download
memory/992-54-0x0000000000000000-mapping.dmp

Download
memory/992-86-0x0000000000800000-0x0000000000843000-memory.dmp

Filesize
268KB

Download
memory/1164-62-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1164-64-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1164-58-0x0000000000000000-mapping.dmp

Download
memory/1164-70-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1184-93-0x0000000000000000-mapping.dmp

Download
memory/1184-91-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1184-94-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1424-68-0x0000000000000000-mapping.dmp

Download
memory/1424-88-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/1424-216-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1908-63-0x0000000000000000-mapping.dmp

Download