ramnit | 0ba75fc2fe07c95f8a3ba6ac4c2ef6eff13b328fc90675712d11aadc02ba0a74

Analysis

max time kernel
150s
max time network
143s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
04-12-2022 02:32

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General

Target

0ba75fc2fe07c95f8a3ba6ac4c2ef6eff13b328fc90675712d11aadc02ba0a74.dll
Size

180KB
MD5

2c48e3c1d0ef419399c5fdcc203b5be0
SHA1

83946effc3c94a7ed934ac5342701f386f575e3f
SHA256

0ba75fc2fe07c95f8a3ba6ac4c2ef6eff13b328fc90675712d11aadc02ba0a74
SHA512

e0534d556169be6910210ef2616a0caf05a78c5fc41e9dc76d32d00a6daf4af1a69f148dadfb6c5a496a7188383b3c8c239bf0e5e03ac0f8d735cb4ae826262a
SSDEEP

3072:Rn4cV8gf2u41Z5tKlLMNaBaTvxpIpOPgEm0:F4y8gOl2XBspGpmHm

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
840	rundll32Srv.exe
1464	WaterMark.exe

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0008000000005c51-56.dat	upx
behavioral1/files/0x0008000000005c51-57.dat	upx
behavioral1/files/0x0008000000005c51-59.dat	upx
behavioral1/files/0x0008000000005c51-60.dat	upx
behavioral1/files/0x0008000000014219-61.dat	upx
behavioral1/files/0x0008000000014219-62.dat	upx
behavioral1/memory/840-64-0x0000000000400000-0x000000000045A000-memory.dmp	upx
behavioral1/files/0x0008000000014219-65.dat	upx
behavioral1/memory/1464-66-0x0000000000400000-0x000000000045A000-memory.dmp	upx
behavioral1/files/0x0008000000014219-67.dat	upx
behavioral1/memory/1464-77-0x0000000000400000-0x000000000045A000-memory.dmp	upx
behavioral1/memory/1464-191-0x0000000000400000-0x000000000045A000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1252	rundll32.exe
1252	rundll32.exe
840	rundll32Srv.exe
840	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 10 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32Srv.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\7-Zip\7zG.exe	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\px2656.tmp	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\7-Zip\7-zip.dll	svchost.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1464	WaterMark.exe
1464	WaterMark.exe
1464	WaterMark.exe
1464	WaterMark.exe
1464	WaterMark.exe
1464	WaterMark.exe
1464	WaterMark.exe
1464	WaterMark.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe
1596	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1464	WaterMark.exe
Token: SeDebugPrivilege	1596	svchost.exe
Token: SeDebugPrivilege	1464	WaterMark.exe
Token: SeDebugPrivilege	588	svchost.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 860 wrote to memory of 1252	860	rundll32.exe	27
PID 860 wrote to memory of 1252	860	rundll32.exe	27
PID 860 wrote to memory of 1252	860	rundll32.exe	27
PID 860 wrote to memory of 1252	860	rundll32.exe	27
PID 860 wrote to memory of 1252	860	rundll32.exe	27
PID 860 wrote to memory of 1252	860	rundll32.exe	27
PID 860 wrote to memory of 1252	860	rundll32.exe	27
PID 1252 wrote to memory of 840	1252	rundll32.exe	28
PID 1252 wrote to memory of 840	1252	rundll32.exe	28
PID 1252 wrote to memory of 840	1252	rundll32.exe	28
PID 1252 wrote to memory of 840	1252	rundll32.exe	28
PID 840 wrote to memory of 1464	840	rundll32Srv.exe	29
PID 840 wrote to memory of 1464	840	rundll32Srv.exe	29
PID 840 wrote to memory of 1464	840	rundll32Srv.exe	29
PID 840 wrote to memory of 1464	840	rundll32Srv.exe	29
PID 1464 wrote to memory of 588	1464	WaterMark.exe	30
PID 1464 wrote to memory of 588	1464	WaterMark.exe	30
PID 1464 wrote to memory of 588	1464	WaterMark.exe	30
PID 1464 wrote to memory of 588	1464	WaterMark.exe	30
PID 1464 wrote to memory of 588	1464	WaterMark.exe	30
PID 1464 wrote to memory of 588	1464	WaterMark.exe	30
PID 1464 wrote to memory of 588	1464	WaterMark.exe	30
PID 1464 wrote to memory of 588	1464	WaterMark.exe	30
PID 1464 wrote to memory of 588	1464	WaterMark.exe	30
PID 1464 wrote to memory of 588	1464	WaterMark.exe	30
PID 1464 wrote to memory of 1596	1464	WaterMark.exe	31
PID 1464 wrote to memory of 1596	1464	WaterMark.exe	31
PID 1464 wrote to memory of 1596	1464	WaterMark.exe	31
PID 1464 wrote to memory of 1596	1464	WaterMark.exe	31
PID 1464 wrote to memory of 1596	1464	WaterMark.exe	31
PID 1464 wrote to memory of 1596	1464	WaterMark.exe	31
PID 1464 wrote to memory of 1596	1464	WaterMark.exe	31
PID 1464 wrote to memory of 1596	1464	WaterMark.exe	31
PID 1464 wrote to memory of 1596	1464	WaterMark.exe	31
PID 1464 wrote to memory of 1596	1464	WaterMark.exe	31
PID 1596 wrote to memory of 260	1596	svchost.exe	7
PID 1596 wrote to memory of 260	1596	svchost.exe	7
PID 1596 wrote to memory of 260	1596	svchost.exe	7
PID 1596 wrote to memory of 260	1596	svchost.exe	7
PID 1596 wrote to memory of 260	1596	svchost.exe	7
PID 1596 wrote to memory of 336	1596	svchost.exe	6
PID 1596 wrote to memory of 336	1596	svchost.exe	6
PID 1596 wrote to memory of 336	1596	svchost.exe	6
PID 1596 wrote to memory of 336	1596	svchost.exe	6
PID 1596 wrote to memory of 336	1596	svchost.exe	6
PID 1596 wrote to memory of 372	1596	svchost.exe	5
PID 1596 wrote to memory of 372	1596	svchost.exe	5
PID 1596 wrote to memory of 372	1596	svchost.exe	5
PID 1596 wrote to memory of 372	1596	svchost.exe	5
PID 1596 wrote to memory of 372	1596	svchost.exe	5
PID 1596 wrote to memory of 384	1596	svchost.exe	4
PID 1596 wrote to memory of 384	1596	svchost.exe	4
PID 1596 wrote to memory of 384	1596	svchost.exe	4
PID 1596 wrote to memory of 384	1596	svchost.exe	4
PID 1596 wrote to memory of 384	1596	svchost.exe	4
PID 1596 wrote to memory of 420	1596	svchost.exe	3
PID 1596 wrote to memory of 420	1596	svchost.exe	3
PID 1596 wrote to memory of 420	1596	svchost.exe	3
PID 1596 wrote to memory of 420	1596	svchost.exe	3
PID 1596 wrote to memory of 420	1596	svchost.exe	3
PID 1596 wrote to memory of 468	1596	svchost.exe	2
PID 1596 wrote to memory of 468	1596	svchost.exe	2
PID 1596 wrote to memory of 468	1596	svchost.exe	2
PID 1596 wrote to memory of 468	1596	svchost.exe	2

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
PID:484

C:\Windows\system32\services.exe
C:\Windows\system32\services.exe
1⤵
PID:468
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:680
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:816
- - C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    3⤵
    PID:1232
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:296
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1152
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:864
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:768
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1068
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:324
- 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 LocalServiceNetworkRestricted
  2⤵
  PID:748
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:600

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:492

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\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1288
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0ba75fc2fe07c95f8a3ba6ac4c2ef6eff13b328fc90675712d11aadc02ba0a74.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:860
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\0ba75fc2fe07c95f8a3ba6ac4c2ef6eff13b328fc90675712d11aadc02ba0a74.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:1252
  - - 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:840
    - - 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:1464
      - 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:588
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1596

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1904

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
882bdc1a5338e812804c0da2b4f4fb9e

SHA1
8c2f20bb9bcc250e75dfabf19c6b1d794628458c

SHA256
0d310c2a700c9dee657aaa4beca2c1b2b7ebb39cae7df660147ad0b07542e883

SHA512
5429691d761a10fc2d5776ca397cf09a72c5e66250b789499fc3f2c1dc87229b0992faed565955b68d6ba512b3f8fa6c22321b1e973519275b417c6051aa124f

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

Filesize
90KB

MD5
882bdc1a5338e812804c0da2b4f4fb9e

SHA1
8c2f20bb9bcc250e75dfabf19c6b1d794628458c

SHA256
0d310c2a700c9dee657aaa4beca2c1b2b7ebb39cae7df660147ad0b07542e883

SHA512
5429691d761a10fc2d5776ca397cf09a72c5e66250b789499fc3f2c1dc87229b0992faed565955b68d6ba512b3f8fa6c22321b1e973519275b417c6051aa124f

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

Filesize
90KB

MD5
882bdc1a5338e812804c0da2b4f4fb9e

SHA1
8c2f20bb9bcc250e75dfabf19c6b1d794628458c

SHA256
0d310c2a700c9dee657aaa4beca2c1b2b7ebb39cae7df660147ad0b07542e883

SHA512
5429691d761a10fc2d5776ca397cf09a72c5e66250b789499fc3f2c1dc87229b0992faed565955b68d6ba512b3f8fa6c22321b1e973519275b417c6051aa124f

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

Filesize
90KB

MD5
882bdc1a5338e812804c0da2b4f4fb9e

SHA1
8c2f20bb9bcc250e75dfabf19c6b1d794628458c

SHA256
0d310c2a700c9dee657aaa4beca2c1b2b7ebb39cae7df660147ad0b07542e883

SHA512
5429691d761a10fc2d5776ca397cf09a72c5e66250b789499fc3f2c1dc87229b0992faed565955b68d6ba512b3f8fa6c22321b1e973519275b417c6051aa124f

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

Filesize
90KB

MD5
882bdc1a5338e812804c0da2b4f4fb9e

SHA1
8c2f20bb9bcc250e75dfabf19c6b1d794628458c

SHA256
0d310c2a700c9dee657aaa4beca2c1b2b7ebb39cae7df660147ad0b07542e883

SHA512
5429691d761a10fc2d5776ca397cf09a72c5e66250b789499fc3f2c1dc87229b0992faed565955b68d6ba512b3f8fa6c22321b1e973519275b417c6051aa124f

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

Filesize
90KB

MD5
882bdc1a5338e812804c0da2b4f4fb9e

SHA1
8c2f20bb9bcc250e75dfabf19c6b1d794628458c

SHA256
0d310c2a700c9dee657aaa4beca2c1b2b7ebb39cae7df660147ad0b07542e883

SHA512
5429691d761a10fc2d5776ca397cf09a72c5e66250b789499fc3f2c1dc87229b0992faed565955b68d6ba512b3f8fa6c22321b1e973519275b417c6051aa124f

Download Submit
\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
882bdc1a5338e812804c0da2b4f4fb9e

SHA1
8c2f20bb9bcc250e75dfabf19c6b1d794628458c

SHA256
0d310c2a700c9dee657aaa4beca2c1b2b7ebb39cae7df660147ad0b07542e883

SHA512
5429691d761a10fc2d5776ca397cf09a72c5e66250b789499fc3f2c1dc87229b0992faed565955b68d6ba512b3f8fa6c22321b1e973519275b417c6051aa124f

Download Submit
\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
882bdc1a5338e812804c0da2b4f4fb9e

SHA1
8c2f20bb9bcc250e75dfabf19c6b1d794628458c

SHA256
0d310c2a700c9dee657aaa4beca2c1b2b7ebb39cae7df660147ad0b07542e883

SHA512
5429691d761a10fc2d5776ca397cf09a72c5e66250b789499fc3f2c1dc87229b0992faed565955b68d6ba512b3f8fa6c22321b1e973519275b417c6051aa124f

Download Submit
memory/588-78-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/588-69-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/588-73-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/840-64-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1252-55-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

Filesize
8KB

Download
memory/1464-66-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1464-77-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1464-135-0x0000000020020000-0x000000002002B000-memory.dmp

Filesize
44KB

Download
memory/1464-191-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1596-80-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1596-83-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download