ramnit | e3eb3e50df9c3c20638f9da5f5dee7aaaaef0607abf04ecddace50017601b627

Analysis

max time kernel
264s
max time network
356s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
04/12/2022, 01:49

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General

Target

e3eb3e50df9c3c20638f9da5f5dee7aaaaef0607abf04ecddace50017601b627.dll
Size

472KB
MD5

d244182cbcd660b26578f55d9fcb4770
SHA1

bf0328fe0049c4b458c9fc6c51434ca2f5a01e30
SHA256

e3eb3e50df9c3c20638f9da5f5dee7aaaaef0607abf04ecddace50017601b627
SHA512

a469c8aaee38f8dc1a7bc174c69448dcdd0ec027f90627be39c0db223c84ba8364d716193f759f8e8faf06f81d812162cc7a5819cfa0f776f010b57342dac8a5
SSDEEP

12288:mehnaNPpSVZmNxRCwnwm3W3OHIIf5xtn7ZDG:meh0PpS6NxNnwYeOHXjV7ZDG

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
1672	rundll32Srv.exe
1120	WaterMark.exe

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000b00000001233d-56.dat	upx
behavioral1/memory/1872-58-0x00000000001C0000-0x000000000021B000-memory.dmp	upx
behavioral1/files/0x000b00000001233d-59.dat	upx
behavioral1/files/0x000b00000001233d-61.dat	upx
behavioral1/memory/1672-62-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral1/files/0x000b00000001233d-63.dat	upx
behavioral1/memory/1672-64-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral1/files/0x0009000000012731-65.dat	upx
behavioral1/files/0x0009000000012731-66.dat	upx
behavioral1/files/0x0009000000012731-68.dat	upx
behavioral1/files/0x0009000000012731-69.dat	upx
behavioral1/memory/1120-79-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral1/memory/1120-197-0x0000000000400000-0x000000000045B000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1872	rundll32.exe
1872	rundll32.exe
1672	rundll32Srv.exe
1672	rundll32Srv.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32Srv.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 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px6F28.tmp	rundll32Srv.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
1120	WaterMark.exe
1120	WaterMark.exe
1120	WaterMark.exe
1120	WaterMark.exe
1120	WaterMark.exe
1120	WaterMark.exe
1120	WaterMark.exe
1120	WaterMark.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe
1980	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1120	WaterMark.exe
Token: SeDebugPrivilege	1980	svchost.exe
Token: SeDebugPrivilege	1120	WaterMark.exe
Token: SeDebugPrivilege	1532	svchost.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 892 wrote to memory of 1872	892	rundll32.exe	28
PID 892 wrote to memory of 1872	892	rundll32.exe	28
PID 892 wrote to memory of 1872	892	rundll32.exe	28
PID 892 wrote to memory of 1872	892	rundll32.exe	28
PID 892 wrote to memory of 1872	892	rundll32.exe	28
PID 892 wrote to memory of 1872	892	rundll32.exe	28
PID 892 wrote to memory of 1872	892	rundll32.exe	28
PID 1872 wrote to memory of 1672	1872	rundll32.exe	29
PID 1872 wrote to memory of 1672	1872	rundll32.exe	29
PID 1872 wrote to memory of 1672	1872	rundll32.exe	29
PID 1872 wrote to memory of 1672	1872	rundll32.exe	29
PID 1672 wrote to memory of 1120	1672	rundll32Srv.exe	30
PID 1672 wrote to memory of 1120	1672	rundll32Srv.exe	30
PID 1672 wrote to memory of 1120	1672	rundll32Srv.exe	30
PID 1672 wrote to memory of 1120	1672	rundll32Srv.exe	30
PID 1120 wrote to memory of 1532	1120	WaterMark.exe	31
PID 1120 wrote to memory of 1532	1120	WaterMark.exe	31
PID 1120 wrote to memory of 1532	1120	WaterMark.exe	31
PID 1120 wrote to memory of 1532	1120	WaterMark.exe	31
PID 1120 wrote to memory of 1532	1120	WaterMark.exe	31
PID 1120 wrote to memory of 1532	1120	WaterMark.exe	31
PID 1120 wrote to memory of 1532	1120	WaterMark.exe	31
PID 1120 wrote to memory of 1532	1120	WaterMark.exe	31
PID 1120 wrote to memory of 1532	1120	WaterMark.exe	31
PID 1120 wrote to memory of 1532	1120	WaterMark.exe	31
PID 1120 wrote to memory of 1980	1120	WaterMark.exe	32
PID 1120 wrote to memory of 1980	1120	WaterMark.exe	32
PID 1120 wrote to memory of 1980	1120	WaterMark.exe	32
PID 1120 wrote to memory of 1980	1120	WaterMark.exe	32
PID 1120 wrote to memory of 1980	1120	WaterMark.exe	32
PID 1120 wrote to memory of 1980	1120	WaterMark.exe	32
PID 1120 wrote to memory of 1980	1120	WaterMark.exe	32
PID 1120 wrote to memory of 1980	1120	WaterMark.exe	32
PID 1120 wrote to memory of 1980	1120	WaterMark.exe	32
PID 1120 wrote to memory of 1980	1120	WaterMark.exe	32
PID 1980 wrote to memory of 260	1980	svchost.exe	7
PID 1980 wrote to memory of 260	1980	svchost.exe	7
PID 1980 wrote to memory of 260	1980	svchost.exe	7
PID 1980 wrote to memory of 260	1980	svchost.exe	7
PID 1980 wrote to memory of 260	1980	svchost.exe	7
PID 1980 wrote to memory of 332	1980	svchost.exe	6
PID 1980 wrote to memory of 332	1980	svchost.exe	6
PID 1980 wrote to memory of 332	1980	svchost.exe	6
PID 1980 wrote to memory of 332	1980	svchost.exe	6
PID 1980 wrote to memory of 332	1980	svchost.exe	6
PID 1980 wrote to memory of 368	1980	svchost.exe	5
PID 1980 wrote to memory of 368	1980	svchost.exe	5
PID 1980 wrote to memory of 368	1980	svchost.exe	5
PID 1980 wrote to memory of 368	1980	svchost.exe	5
PID 1980 wrote to memory of 368	1980	svchost.exe	5
PID 1980 wrote to memory of 380	1980	svchost.exe	4
PID 1980 wrote to memory of 380	1980	svchost.exe	4
PID 1980 wrote to memory of 380	1980	svchost.exe	4
PID 1980 wrote to memory of 380	1980	svchost.exe	4
PID 1980 wrote to memory of 380	1980	svchost.exe	4
PID 1980 wrote to memory of 416	1980	svchost.exe	3
PID 1980 wrote to memory of 416	1980	svchost.exe	3
PID 1980 wrote to memory of 416	1980	svchost.exe	3
PID 1980 wrote to memory of 416	1980	svchost.exe	3
PID 1980 wrote to memory of 416	1980	svchost.exe	3
PID 1980 wrote to memory of 460	1980	svchost.exe	2
PID 1980 wrote to memory of 460	1980	svchost.exe	2
PID 1980 wrote to memory of 460	1980	svchost.exe	2
PID 1980 wrote to memory of 460	1980	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:460
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1200
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:772
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1128
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1044
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:532
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:280
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:864
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:832
- 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:740
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:656
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:580

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: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:332

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:2004

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1956

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1252
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e3eb3e50df9c3c20638f9da5f5dee7aaaaef0607abf04ecddace50017601b627.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:892
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\e3eb3e50df9c3c20638f9da5f5dee7aaaaef0607abf04ecddace50017601b627.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:1872
  - - C:\Windows\SysWOW64\rundll32Srv.exe
      C:\Windows\SysWOW64\rundll32Srv.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Drops file in Program Files directory
      Suspicious use of WriteProcessMemory
      PID:1672
    - - 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:1120
      - 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
        Suspicious use of AdjustPrivilegeToken
        
        PID:1532
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1980

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1180

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
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

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

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

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

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

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

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

Download Submit
\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

Download Submit
\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

Download Submit
memory/1120-197-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1120-79-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1532-71-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/1532-75-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/1532-80-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/1672-64-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1672-62-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1872-55-0x0000000075E01000-0x0000000075E03000-memory.dmp

Filesize
8KB

Download
memory/1872-58-0x00000000001C0000-0x000000000021B000-memory.dmp

Filesize
364KB

Download
memory/1872-57-0x0000000010000000-0x0000000010078000-memory.dmp

Filesize
480KB

Download
memory/1980-82-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1980-85-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download