ramnit | a336a67cda54e9ee5180396289b9aa9f8879bc748cc5a2737c7d3b7dba583cb2

Analysis

max time kernel
150s
max time network
121s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
21-11-2022 10:35

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General

Target

a336a67cda54e9ee5180396289b9aa9f8879bc748cc5a2737c7d3b7dba583cb2.dll
Size

162KB
MD5

3b1903ec6b3552100a8a8dba8757e810
SHA1

6a5744042287623bfe2b6a77a8bb86f102d40e00
SHA256

a336a67cda54e9ee5180396289b9aa9f8879bc748cc5a2737c7d3b7dba583cb2
SHA512

33de3bb7f916e3cdd67d1226bb0bfb71502a6ac3481e434f1c0eacceea5e1e18a4cc2cd926c8070897ace2e12aae4f32e2645739cf95f0b0728e1f4cfb88cbb5
SSDEEP

3072:Kpo0k6ZWVTaif6sCGHZxHGH4sb1e5SQGhjvxYgW:6NZWVJHGYi1Jh7xTW

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
2032	rundll32mgr.exe
1176	WaterMark.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2032-65-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1176-81-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1176-206-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
2044	rundll32.exe
2044	rundll32.exe
2032	rundll32mgr.exe
2032	rundll32mgr.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\dmlconf.dat	svchost.exe
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe
File created	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 (x86)\Microsoft\px57E.tmp	rundll32mgr.exe
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\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\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\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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1756	2044	WerFault.exe	27

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1176	WaterMark.exe
1176	WaterMark.exe
1176	WaterMark.exe
1176	WaterMark.exe
1176	WaterMark.exe
1176	WaterMark.exe
1176	WaterMark.exe
1176	WaterMark.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe
1792	svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1176	WaterMark.exe
Token: SeDebugPrivilege	1792	svchost.exe
Token: SeDebugPrivilege	2044	rundll32.exe
Token: SeDebugPrivilege	1756	WerFault.exe
Token: SeDebugPrivilege	1176	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 2044	1896	rundll32.exe	27
PID 1896 wrote to memory of 2044	1896	rundll32.exe	27
PID 1896 wrote to memory of 2044	1896	rundll32.exe	27
PID 1896 wrote to memory of 2044	1896	rundll32.exe	27
PID 1896 wrote to memory of 2044	1896	rundll32.exe	27
PID 1896 wrote to memory of 2044	1896	rundll32.exe	27
PID 1896 wrote to memory of 2044	1896	rundll32.exe	27
PID 2044 wrote to memory of 2032	2044	rundll32.exe	28
PID 2044 wrote to memory of 2032	2044	rundll32.exe	28
PID 2044 wrote to memory of 2032	2044	rundll32.exe	28
PID 2044 wrote to memory of 2032	2044	rundll32.exe	28
PID 2044 wrote to memory of 1756	2044	rundll32.exe	29
PID 2044 wrote to memory of 1756	2044	rundll32.exe	29
PID 2044 wrote to memory of 1756	2044	rundll32.exe	29
PID 2044 wrote to memory of 1756	2044	rundll32.exe	29
PID 2032 wrote to memory of 1176	2032	rundll32mgr.exe	30
PID 2032 wrote to memory of 1176	2032	rundll32mgr.exe	30
PID 2032 wrote to memory of 1176	2032	rundll32mgr.exe	30
PID 2032 wrote to memory of 1176	2032	rundll32mgr.exe	30
PID 1176 wrote to memory of 1644	1176	WaterMark.exe	31
PID 1176 wrote to memory of 1644	1176	WaterMark.exe	31
PID 1176 wrote to memory of 1644	1176	WaterMark.exe	31
PID 1176 wrote to memory of 1644	1176	WaterMark.exe	31
PID 1176 wrote to memory of 1644	1176	WaterMark.exe	31
PID 1176 wrote to memory of 1644	1176	WaterMark.exe	31
PID 1176 wrote to memory of 1644	1176	WaterMark.exe	31
PID 1176 wrote to memory of 1644	1176	WaterMark.exe	31
PID 1176 wrote to memory of 1644	1176	WaterMark.exe	31
PID 1176 wrote to memory of 1644	1176	WaterMark.exe	31
PID 1176 wrote to memory of 1792	1176	WaterMark.exe	32
PID 1176 wrote to memory of 1792	1176	WaterMark.exe	32
PID 1176 wrote to memory of 1792	1176	WaterMark.exe	32
PID 1176 wrote to memory of 1792	1176	WaterMark.exe	32
PID 1176 wrote to memory of 1792	1176	WaterMark.exe	32
PID 1176 wrote to memory of 1792	1176	WaterMark.exe	32
PID 1176 wrote to memory of 1792	1176	WaterMark.exe	32
PID 1176 wrote to memory of 1792	1176	WaterMark.exe	32
PID 1176 wrote to memory of 1792	1176	WaterMark.exe	32
PID 1176 wrote to memory of 1792	1176	WaterMark.exe	32
PID 1792 wrote to memory of 260	1792	svchost.exe	7
PID 1792 wrote to memory of 260	1792	svchost.exe	7
PID 1792 wrote to memory of 260	1792	svchost.exe	7
PID 1792 wrote to memory of 260	1792	svchost.exe	7
PID 1792 wrote to memory of 260	1792	svchost.exe	7
PID 1792 wrote to memory of 332	1792	svchost.exe	6
PID 1792 wrote to memory of 332	1792	svchost.exe	6
PID 1792 wrote to memory of 332	1792	svchost.exe	6
PID 1792 wrote to memory of 332	1792	svchost.exe	6
PID 1792 wrote to memory of 332	1792	svchost.exe	6
PID 1792 wrote to memory of 368	1792	svchost.exe	5
PID 1792 wrote to memory of 368	1792	svchost.exe	5
PID 1792 wrote to memory of 368	1792	svchost.exe	5
PID 1792 wrote to memory of 368	1792	svchost.exe	5
PID 1792 wrote to memory of 368	1792	svchost.exe	5
PID 1792 wrote to memory of 376	1792	svchost.exe	4
PID 1792 wrote to memory of 376	1792	svchost.exe	4
PID 1792 wrote to memory of 376	1792	svchost.exe	4
PID 1792 wrote to memory of 376	1792	svchost.exe	4
PID 1792 wrote to memory of 376	1792	svchost.exe	4
PID 1792 wrote to memory of 416	1792	svchost.exe	3
PID 1792 wrote to memory of 416	1792	svchost.exe	3
PID 1792 wrote to memory of 416	1792	svchost.exe	3
PID 1792 wrote to memory of 416	1792	svchost.exe	3
PID 1792 wrote to memory of 416	1792	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\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1960
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1828
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1136
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1056
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:284
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:292
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:872
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:836
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:808
- 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:672
- 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:376

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\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1232

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:848

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1268
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a336a67cda54e9ee5180396289b9aa9f8879bc748cc5a2737c7d3b7dba583cb2.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1896
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\a336a67cda54e9ee5180396289b9aa9f8879bc748cc5a2737c7d3b7dba583cb2.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2044
  - - 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 WriteProcessMemory
      PID:2032
    - - 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:1176
      - 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:1644
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1792
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2044 -s 252
      4⤵
      Program crash
      Suspicious use of AdjustPrivilegeToken
      PID:1756

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
65KB

MD5
849ef19ec0155d79d4fa5bfb5657b106

SHA1
eb7e7ff208ecb40d35755d8f36e31e2482166299

SHA256
8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

SHA512
30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

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

Filesize
65KB

MD5
849ef19ec0155d79d4fa5bfb5657b106

SHA1
eb7e7ff208ecb40d35755d8f36e31e2482166299

SHA256
8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

SHA512
30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

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

Filesize
65KB

MD5
849ef19ec0155d79d4fa5bfb5657b106

SHA1
eb7e7ff208ecb40d35755d8f36e31e2482166299

SHA256
8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

SHA512
30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

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

Filesize
65KB

MD5
849ef19ec0155d79d4fa5bfb5657b106

SHA1
eb7e7ff208ecb40d35755d8f36e31e2482166299

SHA256
8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

SHA512
30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

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

Filesize
65KB

MD5
849ef19ec0155d79d4fa5bfb5657b106

SHA1
eb7e7ff208ecb40d35755d8f36e31e2482166299

SHA256
8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

SHA512
30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

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

Filesize
65KB

MD5
849ef19ec0155d79d4fa5bfb5657b106

SHA1
eb7e7ff208ecb40d35755d8f36e31e2482166299

SHA256
8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

SHA512
30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
65KB

MD5
849ef19ec0155d79d4fa5bfb5657b106

SHA1
eb7e7ff208ecb40d35755d8f36e31e2482166299

SHA256
8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

SHA512
30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
65KB

MD5
849ef19ec0155d79d4fa5bfb5657b106

SHA1
eb7e7ff208ecb40d35755d8f36e31e2482166299

SHA256
8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

SHA512
30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

Download Submit
memory/1176-206-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1176-81-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1176-83-0x0000000000220000-0x0000000000241000-memory.dmp

Filesize
132KB

Download
memory/1176-64-0x0000000000000000-mapping.dmp

Download
memory/1644-70-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1644-82-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1644-207-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1644-72-0x0000000000000000-mapping.dmp

Download
memory/1644-74-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1756-62-0x0000000000000000-mapping.dmp

Download
memory/1792-85-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1792-88-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1792-87-0x0000000000000000-mapping.dmp

Download
memory/2032-68-0x00000000001B0000-0x00000000001D1000-memory.dmp

Filesize
132KB

Download
memory/2032-58-0x0000000000000000-mapping.dmp

Download
memory/2032-65-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2044-55-0x0000000075201000-0x0000000075203000-memory.dmp

Filesize
8KB

Download
memory/2044-80-0x0000000074BF0000-0x0000000074C1C000-memory.dmp

Filesize
176KB

Download
memory/2044-79-0x0000000074BC0000-0x0000000074BEC000-memory.dmp

Filesize
176KB

Download
memory/2044-78-0x0000000074BF0000-0x0000000074C1C000-memory.dmp

Filesize
176KB

Download
memory/2044-54-0x0000000000000000-mapping.dmp

Download
memory/2044-881-0x0000000074BC0000-0x0000000074BEC000-memory.dmp

Filesize
176KB

Download
memory/2044-880-0x0000000074BF0000-0x0000000074C1C000-memory.dmp

Filesize
176KB

Download