ramnit | b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396

General

Target

b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exe
Size

94KB
MD5

0b11de951151ae8ee0888d559c9f9a00
SHA1

f2b1a65a40e358af6050e20e4b701741a8e4a059
SHA256

b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396
SHA512

1b72fd918b2bbc870ebde5f4feff297a045858941d78e398eae2b2cfc3d3a0e2f36e928acc696b27975003c10342d9a9433ed8e919f47ca65ee83b98fec77a37
SSDEEP

1536:3o38k0oFIMN5C/5Zm2/h/40MVskmm0B4uP3sJ+b54BEAtWgjp9At:39oqyWT/4Js0kv3q+b5bAtHjA

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

Processes:

svchost.exe

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 1 IoCs

Processes:

WaterMark.exe

pid process

968 WaterMark.exe

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
\Program Files (x86)\Microsoft\WaterMark.exe	upx
\Program Files (x86)\Microsoft\WaterMark.exe	upx
behavioral1/memory/1216-57-0x0000000000400000-0x000000000044D000-memory.dmp	upx
C:\Program Files (x86)\Microsoft\WaterMark.exe	upx
behavioral1/memory/968-59-0x0000000000400000-0x000000000044D000-memory.dmp	upx
C:\Program Files (x86)\Microsoft\WaterMark.exe	upx
behavioral1/memory/968-70-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral1/memory/968-188-0x0000000000400000-0x000000000044D000-memory.dmp	upx

Loads dropped DLL 2 IoCs

Processes:

b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exe

pid	process
1216	b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exe
1216	b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exe

Drops file in System32 directory 2 IoCs

Processes:

svchost.exe

description ioc process

File created C:\Windows\SysWOW64\dmlconf.dat svchost.exe
File opened for modification C:\Windows\SysWOW64\dmlconf.dat svchost.exe

description	ioc	process
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

Processes:

b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exesvchost.exe

description	ioc	process
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.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\7zG.exe	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px2CCC.tmp	b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exe
File opened for modification	C:\Program Files\7-Zip\7-zip32.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\7zFM.exe	svchost.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

WaterMark.exesvchost.exe

pid	process
968	WaterMark.exe
968	WaterMark.exe
968	WaterMark.exe
968	WaterMark.exe
968	WaterMark.exe
968	WaterMark.exe
968	WaterMark.exe
968	WaterMark.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe
1532	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

WaterMark.exesvchost.exesvchost.exe

description	pid	process
Token: SeDebugPrivilege	968	WaterMark.exe
Token: SeDebugPrivilege	1532	svchost.exe
Token: SeDebugPrivilege	968	WaterMark.exe
Token: SeDebugPrivilege	860	svchost.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exeWaterMark.exesvchost.exe

description	pid	process	target process
PID 1216 wrote to memory of 968	1216	b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exe	WaterMark.exe
PID 1216 wrote to memory of 968	1216	b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exe	WaterMark.exe
PID 1216 wrote to memory of 968	1216	b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exe	WaterMark.exe
PID 1216 wrote to memory of 968	1216	b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exe	WaterMark.exe
PID 968 wrote to memory of 860	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 860	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 860	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 860	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 860	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 860	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 860	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 860	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 860	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 860	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 1532	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 1532	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 1532	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 1532	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 1532	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 1532	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 1532	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 1532	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 1532	968	WaterMark.exe	svchost.exe
PID 968 wrote to memory of 1532	968	WaterMark.exe	svchost.exe
PID 1532 wrote to memory of 260	1532	svchost.exe	smss.exe
PID 1532 wrote to memory of 260	1532	svchost.exe	smss.exe
PID 1532 wrote to memory of 260	1532	svchost.exe	smss.exe
PID 1532 wrote to memory of 260	1532	svchost.exe	smss.exe
PID 1532 wrote to memory of 260	1532	svchost.exe	smss.exe
PID 1532 wrote to memory of 332	1532	svchost.exe	csrss.exe
PID 1532 wrote to memory of 332	1532	svchost.exe	csrss.exe
PID 1532 wrote to memory of 332	1532	svchost.exe	csrss.exe
PID 1532 wrote to memory of 332	1532	svchost.exe	csrss.exe
PID 1532 wrote to memory of 332	1532	svchost.exe	csrss.exe
PID 1532 wrote to memory of 368	1532	svchost.exe	wininit.exe
PID 1532 wrote to memory of 368	1532	svchost.exe	wininit.exe
PID 1532 wrote to memory of 368	1532	svchost.exe	wininit.exe
PID 1532 wrote to memory of 368	1532	svchost.exe	wininit.exe
PID 1532 wrote to memory of 368	1532	svchost.exe	wininit.exe
PID 1532 wrote to memory of 384	1532	svchost.exe	csrss.exe
PID 1532 wrote to memory of 384	1532	svchost.exe	csrss.exe
PID 1532 wrote to memory of 384	1532	svchost.exe	csrss.exe
PID 1532 wrote to memory of 384	1532	svchost.exe	csrss.exe
PID 1532 wrote to memory of 384	1532	svchost.exe	csrss.exe
PID 1532 wrote to memory of 420	1532	svchost.exe	winlogon.exe
PID 1532 wrote to memory of 420	1532	svchost.exe	winlogon.exe
PID 1532 wrote to memory of 420	1532	svchost.exe	winlogon.exe
PID 1532 wrote to memory of 420	1532	svchost.exe	winlogon.exe
PID 1532 wrote to memory of 420	1532	svchost.exe	winlogon.exe
PID 1532 wrote to memory of 468	1532	svchost.exe	services.exe
PID 1532 wrote to memory of 468	1532	svchost.exe	services.exe
PID 1532 wrote to memory of 468	1532	svchost.exe	services.exe
PID 1532 wrote to memory of 468	1532	svchost.exe	services.exe
PID 1532 wrote to memory of 468	1532	svchost.exe	services.exe
PID 1532 wrote to memory of 476	1532	svchost.exe	lsass.exe
PID 1532 wrote to memory of 476	1532	svchost.exe	lsass.exe
PID 1532 wrote to memory of 476	1532	svchost.exe	lsass.exe
PID 1532 wrote to memory of 476	1532	svchost.exe	lsass.exe
PID 1532 wrote to memory of 476	1532	svchost.exe	lsass.exe
PID 1532 wrote to memory of 484	1532	svchost.exe	lsm.exe
PID 1532 wrote to memory of 484	1532	svchost.exe	lsm.exe
PID 1532 wrote to memory of 484	1532	svchost.exe	lsm.exe
PID 1532 wrote to memory of 484	1532	svchost.exe	lsm.exe
PID 1532 wrote to memory of 484	1532	svchost.exe	lsm.exe

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:468

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
2⤵
PID:736

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
2⤵
PID:804

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
3⤵
PID:1172

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkService
2⤵
PID:108

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
2⤵
PID:1044

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
2⤵
PID:1104

C:\Windows\system32\sppsvc.exe
C:\Windows\system32\sppsvc.exe
2⤵
PID:1664

C:\Windows\system32\taskhost.exe
"taskhost.exe"
2⤵
PID:1124

C:\Windows\System32\spoolsv.exe
C:\Windows\System32\spoolsv.exe
2⤵
PID:308

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 RPCSS
2⤵
PID:660

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch
2⤵
PID:584

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: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:1252

C:\Users\Admin\AppData\Local\Temp\b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exe
"C:\Users\Admin\AppData\Local\Temp\b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396.exe"
2⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1216

C:\Program Files (x86)\Microsoft\WaterMark.exe
"C:\Program Files (x86)\Microsoft\WaterMark.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:968

C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\svchost.exe
4⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
PID:860

C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\svchost.exe
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1532

C:\Windows\system32\wbem\wmiprvse.exe
C:\Windows\system32\wbem\wmiprvse.exe
1⤵
PID:1960

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1996

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\Microsoft\WaterMark.exe
Filesize
94KB

MD5
0b11de951151ae8ee0888d559c9f9a00

SHA1
f2b1a65a40e358af6050e20e4b701741a8e4a059

SHA256
b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396

SHA512
1b72fd918b2bbc870ebde5f4feff297a045858941d78e398eae2b2cfc3d3a0e2f36e928acc696b27975003c10342d9a9433ed8e919f47ca65ee83b98fec77a37

Download Submit
C:\Program Files (x86)\Microsoft\WaterMark.exe
Filesize
94KB

MD5
0b11de951151ae8ee0888d559c9f9a00

SHA1
f2b1a65a40e358af6050e20e4b701741a8e4a059

SHA256
b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396

SHA512
1b72fd918b2bbc870ebde5f4feff297a045858941d78e398eae2b2cfc3d3a0e2f36e928acc696b27975003c10342d9a9433ed8e919f47ca65ee83b98fec77a37

Download Submit
\Program Files (x86)\Microsoft\WaterMark.exe
Filesize
94KB

MD5
0b11de951151ae8ee0888d559c9f9a00

SHA1
f2b1a65a40e358af6050e20e4b701741a8e4a059

SHA256
b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396

SHA512
1b72fd918b2bbc870ebde5f4feff297a045858941d78e398eae2b2cfc3d3a0e2f36e928acc696b27975003c10342d9a9433ed8e919f47ca65ee83b98fec77a37

Download Submit
\Program Files (x86)\Microsoft\WaterMark.exe
Filesize
94KB

MD5
0b11de951151ae8ee0888d559c9f9a00

SHA1
f2b1a65a40e358af6050e20e4b701741a8e4a059

SHA256
b52dbb47538dd79be8e612363931ae451763ce3b12f2c2fb1e2442ce32a2a396

SHA512
1b72fd918b2bbc870ebde5f4feff297a045858941d78e398eae2b2cfc3d3a0e2f36e928acc696b27975003c10342d9a9433ed8e919f47ca65ee83b98fec77a37

Download Submit
memory/860-62-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/860-65-0x0000000074F01000-0x0000000074F03000-memory.dmp

Filesize
8KB

Download
memory/860-71-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/860-64-0x0000000000000000-mapping.dmp

Download
memory/860-66-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/968-70-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/968-56-0x0000000000000000-mapping.dmp

Download
memory/968-59-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/968-130-0x0000000020020000-0x000000002002B000-memory.dmp

Filesize
44KB

Download
memory/968-188-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1216-57-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1532-73-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1532-75-0x0000000000000000-mapping.dmp

Download
memory/1532-76-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads