ramnit | 0eac8023f7f98d02be864e0a0e04b98237caba618635ea8db98b20e79526c9ad

Analysis

max time kernel
152s
max time network
146s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
29/10/2022, 17:36

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General

Target

0eac8023f7f98d02be864e0a0e04b98237caba618635ea8db98b20e79526c9ad.dll
Size

436KB
MD5

8481ba4dc48607484e7b6fc3f8c989d5
SHA1

a2fb92290d332487853108ff9e2b662497ed497f
SHA256

0eac8023f7f98d02be864e0a0e04b98237caba618635ea8db98b20e79526c9ad
SHA512

9ed899abb2c55c02c0b397f05fc58c4c117647f9a33331c2ffbeb71938ee78932e388c55b03234d523b76757439fe5d69f4431a5279384b77e19b1596ffc13c2
SSDEEP

12288:5lVvN1QWguohInJDrn8zwNF7eCrANFe+1hI:z2Sxrn80NF77ANE

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
1168	rundll32Srv.exe
772	WaterMark.exe

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000500000000b2d2-56.dat	upx
behavioral1/files/0x000500000000b2d2-57.dat	upx
behavioral1/files/0x000500000000b2d2-59.dat	upx
behavioral1/memory/1168-63-0x0000000000400000-0x0000000000441000-memory.dmp	upx
behavioral1/files/0x000500000000b2d2-64.dat	upx
behavioral1/files/0x000a00000001230f-65.dat	upx
behavioral1/files/0x000a00000001230f-66.dat	upx
behavioral1/files/0x000a00000001230f-69.dat	upx
behavioral1/memory/1168-68-0x0000000000400000-0x0000000000441000-memory.dmp	upx
behavioral1/files/0x000a00000001230f-70.dat	upx
behavioral1/memory/772-80-0x0000000000400000-0x0000000000441000-memory.dmp	upx
behavioral1/memory/772-210-0x0000000000400000-0x0000000000441000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1352	rundll32.exe
1352	rundll32.exe
1168	rundll32Srv.exe
1168	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 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\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 (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\7z.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\px1BBC.tmp	rundll32Srv.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32Srv.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1160	1352	WerFault.exe	27

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
772	WaterMark.exe
772	WaterMark.exe
772	WaterMark.exe
772	WaterMark.exe
772	WaterMark.exe
772	WaterMark.exe
772	WaterMark.exe
772	WaterMark.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe
988	svchost.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	772	WaterMark.exe
Token: SeDebugPrivilege	988	svchost.exe
Token: SeDebugPrivilege	1352	rundll32.exe
Token: SeDebugPrivilege	1160	WerFault.exe
Token: SeDebugPrivilege	772	WaterMark.exe
Token: SeDebugPrivilege	584	svchost.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1324 wrote to memory of 1352	1324	rundll32.exe	27
PID 1324 wrote to memory of 1352	1324	rundll32.exe	27
PID 1324 wrote to memory of 1352	1324	rundll32.exe	27
PID 1324 wrote to memory of 1352	1324	rundll32.exe	27
PID 1324 wrote to memory of 1352	1324	rundll32.exe	27
PID 1324 wrote to memory of 1352	1324	rundll32.exe	27
PID 1324 wrote to memory of 1352	1324	rundll32.exe	27
PID 1352 wrote to memory of 1168	1352	rundll32.exe	28
PID 1352 wrote to memory of 1168	1352	rundll32.exe	28
PID 1352 wrote to memory of 1168	1352	rundll32.exe	28
PID 1352 wrote to memory of 1168	1352	rundll32.exe	28
PID 1352 wrote to memory of 1160	1352	rundll32.exe	29
PID 1352 wrote to memory of 1160	1352	rundll32.exe	29
PID 1352 wrote to memory of 1160	1352	rundll32.exe	29
PID 1352 wrote to memory of 1160	1352	rundll32.exe	29
PID 1168 wrote to memory of 772	1168	rundll32Srv.exe	30
PID 1168 wrote to memory of 772	1168	rundll32Srv.exe	30
PID 1168 wrote to memory of 772	1168	rundll32Srv.exe	30
PID 1168 wrote to memory of 772	1168	rundll32Srv.exe	30
PID 772 wrote to memory of 584	772	WaterMark.exe	31
PID 772 wrote to memory of 584	772	WaterMark.exe	31
PID 772 wrote to memory of 584	772	WaterMark.exe	31
PID 772 wrote to memory of 584	772	WaterMark.exe	31
PID 772 wrote to memory of 584	772	WaterMark.exe	31
PID 772 wrote to memory of 584	772	WaterMark.exe	31
PID 772 wrote to memory of 584	772	WaterMark.exe	31
PID 772 wrote to memory of 584	772	WaterMark.exe	31
PID 772 wrote to memory of 584	772	WaterMark.exe	31
PID 772 wrote to memory of 584	772	WaterMark.exe	31
PID 772 wrote to memory of 988	772	WaterMark.exe	32
PID 772 wrote to memory of 988	772	WaterMark.exe	32
PID 772 wrote to memory of 988	772	WaterMark.exe	32
PID 772 wrote to memory of 988	772	WaterMark.exe	32
PID 772 wrote to memory of 988	772	WaterMark.exe	32
PID 772 wrote to memory of 988	772	WaterMark.exe	32
PID 772 wrote to memory of 988	772	WaterMark.exe	32
PID 772 wrote to memory of 988	772	WaterMark.exe	32
PID 772 wrote to memory of 988	772	WaterMark.exe	32
PID 772 wrote to memory of 988	772	WaterMark.exe	32
PID 988 wrote to memory of 260	988	svchost.exe	7
PID 988 wrote to memory of 260	988	svchost.exe	7
PID 988 wrote to memory of 260	988	svchost.exe	7
PID 988 wrote to memory of 260	988	svchost.exe	7
PID 988 wrote to memory of 260	988	svchost.exe	7
PID 988 wrote to memory of 332	988	svchost.exe	6
PID 988 wrote to memory of 332	988	svchost.exe	6
PID 988 wrote to memory of 332	988	svchost.exe	6
PID 988 wrote to memory of 332	988	svchost.exe	6
PID 988 wrote to memory of 332	988	svchost.exe	6
PID 988 wrote to memory of 368	988	svchost.exe	5
PID 988 wrote to memory of 368	988	svchost.exe	5
PID 988 wrote to memory of 368	988	svchost.exe	5
PID 988 wrote to memory of 368	988	svchost.exe	5
PID 988 wrote to memory of 368	988	svchost.exe	5
PID 988 wrote to memory of 380	988	svchost.exe	4
PID 988 wrote to memory of 380	988	svchost.exe	4
PID 988 wrote to memory of 380	988	svchost.exe	4
PID 988 wrote to memory of 380	988	svchost.exe	4
PID 988 wrote to memory of 380	988	svchost.exe	4
PID 988 wrote to memory of 416	988	svchost.exe	3
PID 988 wrote to memory of 416	988	svchost.exe	3
PID 988 wrote to memory of 416	988	svchost.exe	3
PID 988 wrote to memory of 416	988	svchost.exe	3
PID 988 wrote to memory of 416	988	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\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:676
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:888
- - \\?\C:\Windows\system32\wbem\WMIADAP.EXE
    wmiadap.exe /F /T /R
    3⤵
    PID:1796
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1780
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:752
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1124
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1084
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:300
- 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 LocalService
  2⤵
  PID:844
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:816
- 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 DcomLaunch
  2⤵
  PID:596

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\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1208
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0eac8023f7f98d02be864e0a0e04b98237caba618635ea8db98b20e79526c9ad.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1324
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\0eac8023f7f98d02be864e0a0e04b98237caba618635ea8db98b20e79526c9ad.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1352
  - - 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:1168
    - - 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:772
      - 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:584
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:988
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1352 -s 228
      4⤵
      Program crash
      Suspicious use of AdjustPrivilegeToken
      PID:1160

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1176

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
94KB

MD5
f6736faa3126f64ed4a7109e40c47806

SHA1
0d50917f44d6e173bac24916c95343616dcbf18c

SHA256
bc0cb854888c155cbfed860a6546bea3c82db643df30437fe14d91194939a874

SHA512
29cc26cd4df360252917a5d913e5e4776b6d05061b464f09dbb33918491affdc15cac9e142a9227a48f27d26db1f8ee85bd3d417365d6fef9b2fd380e090efe5

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

Filesize
94KB

MD5
f6736faa3126f64ed4a7109e40c47806

SHA1
0d50917f44d6e173bac24916c95343616dcbf18c

SHA256
bc0cb854888c155cbfed860a6546bea3c82db643df30437fe14d91194939a874

SHA512
29cc26cd4df360252917a5d913e5e4776b6d05061b464f09dbb33918491affdc15cac9e142a9227a48f27d26db1f8ee85bd3d417365d6fef9b2fd380e090efe5

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

Filesize
94KB

MD5
f6736faa3126f64ed4a7109e40c47806

SHA1
0d50917f44d6e173bac24916c95343616dcbf18c

SHA256
bc0cb854888c155cbfed860a6546bea3c82db643df30437fe14d91194939a874

SHA512
29cc26cd4df360252917a5d913e5e4776b6d05061b464f09dbb33918491affdc15cac9e142a9227a48f27d26db1f8ee85bd3d417365d6fef9b2fd380e090efe5

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

Filesize
94KB

MD5
f6736faa3126f64ed4a7109e40c47806

SHA1
0d50917f44d6e173bac24916c95343616dcbf18c

SHA256
bc0cb854888c155cbfed860a6546bea3c82db643df30437fe14d91194939a874

SHA512
29cc26cd4df360252917a5d913e5e4776b6d05061b464f09dbb33918491affdc15cac9e142a9227a48f27d26db1f8ee85bd3d417365d6fef9b2fd380e090efe5

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

Filesize
94KB

MD5
f6736faa3126f64ed4a7109e40c47806

SHA1
0d50917f44d6e173bac24916c95343616dcbf18c

SHA256
bc0cb854888c155cbfed860a6546bea3c82db643df30437fe14d91194939a874

SHA512
29cc26cd4df360252917a5d913e5e4776b6d05061b464f09dbb33918491affdc15cac9e142a9227a48f27d26db1f8ee85bd3d417365d6fef9b2fd380e090efe5

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

Filesize
94KB

MD5
f6736faa3126f64ed4a7109e40c47806

SHA1
0d50917f44d6e173bac24916c95343616dcbf18c

SHA256
bc0cb854888c155cbfed860a6546bea3c82db643df30437fe14d91194939a874

SHA512
29cc26cd4df360252917a5d913e5e4776b6d05061b464f09dbb33918491affdc15cac9e142a9227a48f27d26db1f8ee85bd3d417365d6fef9b2fd380e090efe5

Download Submit
\Windows\SysWOW64\rundll32Srv.exe

Filesize
94KB

MD5
f6736faa3126f64ed4a7109e40c47806

SHA1
0d50917f44d6e173bac24916c95343616dcbf18c

SHA256
bc0cb854888c155cbfed860a6546bea3c82db643df30437fe14d91194939a874

SHA512
29cc26cd4df360252917a5d913e5e4776b6d05061b464f09dbb33918491affdc15cac9e142a9227a48f27d26db1f8ee85bd3d417365d6fef9b2fd380e090efe5

Download Submit
\Windows\SysWOW64\rundll32Srv.exe

Filesize
94KB

MD5
f6736faa3126f64ed4a7109e40c47806

SHA1
0d50917f44d6e173bac24916c95343616dcbf18c

SHA256
bc0cb854888c155cbfed860a6546bea3c82db643df30437fe14d91194939a874

SHA512
29cc26cd4df360252917a5d913e5e4776b6d05061b464f09dbb33918491affdc15cac9e142a9227a48f27d26db1f8ee85bd3d417365d6fef9b2fd380e090efe5

Download Submit
memory/584-81-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/584-76-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/584-72-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/772-80-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/772-210-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/988-86-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/988-83-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1168-63-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/1168-68-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/1352-62-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/1352-60-0x000000007C360000-0x000000007C3CE000-memory.dmp

Filesize
440KB

Download
memory/1352-55-0x00000000752B1000-0x00000000752B3000-memory.dmp

Filesize
8KB

Download