ramnit | 9a67ca9394f49740940434eb6aec56e8d95e46fcba069b7a31266adb1ce6ec13

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
06/11/2022, 20:53

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General

Target

9a67ca9394f49740940434eb6aec56e8d95e46fcba069b7a31266adb1ce6ec13.dll
Size

408KB
MD5

046e1550e3b43207ce668c406161164d
SHA1

8b457ddda0da97f117a5ad55f76e8fa312e92e0c
SHA256

9a67ca9394f49740940434eb6aec56e8d95e46fcba069b7a31266adb1ce6ec13
SHA512

30c69ac88fd7baaa1ff7e6281b4960e01aef1de8d9915e607d0c03ec9bc5e2f038b7f9d115c50a02f4101202d0e9a14fbe3043038025476c31f79a67686608fa
SSDEEP

12288:Loz83OtIEzW+/m/AyF7bCrO/E0McMxwFB:YbIEzW+/m/rF7kcRNXr

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
1780	rundll32mgr.exe
1252	WaterMark.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1780-65-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1252-79-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1252-208-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1792	rundll32.exe
1792	rundll32.exe
1780	rundll32mgr.exe
1780	rundll32mgr.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.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\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\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\7zFM.exe	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\pxE734.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	rundll32mgr.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1076	1792	WerFault.exe	28

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1252	WaterMark.exe
1252	WaterMark.exe
1252	WaterMark.exe
1252	WaterMark.exe
1252	WaterMark.exe
1252	WaterMark.exe
1252	WaterMark.exe
1252	WaterMark.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe
624	svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1252	WaterMark.exe
Token: SeDebugPrivilege	624	svchost.exe
Token: SeDebugPrivilege	1792	rundll32.exe
Token: SeDebugPrivilege	1076	WerFault.exe
Token: SeDebugPrivilege	1252	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 864 wrote to memory of 1792	864	rundll32.exe	28
PID 864 wrote to memory of 1792	864	rundll32.exe	28
PID 864 wrote to memory of 1792	864	rundll32.exe	28
PID 864 wrote to memory of 1792	864	rundll32.exe	28
PID 864 wrote to memory of 1792	864	rundll32.exe	28
PID 864 wrote to memory of 1792	864	rundll32.exe	28
PID 864 wrote to memory of 1792	864	rundll32.exe	28
PID 1792 wrote to memory of 1780	1792	rundll32.exe	29
PID 1792 wrote to memory of 1780	1792	rundll32.exe	29
PID 1792 wrote to memory of 1780	1792	rundll32.exe	29
PID 1792 wrote to memory of 1780	1792	rundll32.exe	29
PID 1780 wrote to memory of 1252	1780	rundll32mgr.exe	31
PID 1780 wrote to memory of 1252	1780	rundll32mgr.exe	31
PID 1780 wrote to memory of 1252	1780	rundll32mgr.exe	31
PID 1780 wrote to memory of 1252	1780	rundll32mgr.exe	31
PID 1792 wrote to memory of 1076	1792	rundll32.exe	30
PID 1792 wrote to memory of 1076	1792	rundll32.exe	30
PID 1792 wrote to memory of 1076	1792	rundll32.exe	30
PID 1792 wrote to memory of 1076	1792	rundll32.exe	30
PID 1252 wrote to memory of 2040	1252	WaterMark.exe	32
PID 1252 wrote to memory of 2040	1252	WaterMark.exe	32
PID 1252 wrote to memory of 2040	1252	WaterMark.exe	32
PID 1252 wrote to memory of 2040	1252	WaterMark.exe	32
PID 1252 wrote to memory of 2040	1252	WaterMark.exe	32
PID 1252 wrote to memory of 2040	1252	WaterMark.exe	32
PID 1252 wrote to memory of 2040	1252	WaterMark.exe	32
PID 1252 wrote to memory of 2040	1252	WaterMark.exe	32
PID 1252 wrote to memory of 2040	1252	WaterMark.exe	32
PID 1252 wrote to memory of 2040	1252	WaterMark.exe	32
PID 1252 wrote to memory of 624	1252	WaterMark.exe	33
PID 1252 wrote to memory of 624	1252	WaterMark.exe	33
PID 1252 wrote to memory of 624	1252	WaterMark.exe	33
PID 1252 wrote to memory of 624	1252	WaterMark.exe	33
PID 1252 wrote to memory of 624	1252	WaterMark.exe	33
PID 1252 wrote to memory of 624	1252	WaterMark.exe	33
PID 1252 wrote to memory of 624	1252	WaterMark.exe	33
PID 1252 wrote to memory of 624	1252	WaterMark.exe	33
PID 1252 wrote to memory of 624	1252	WaterMark.exe	33
PID 1252 wrote to memory of 624	1252	WaterMark.exe	33
PID 624 wrote to memory of 260	624	svchost.exe	7
PID 624 wrote to memory of 260	624	svchost.exe	7
PID 624 wrote to memory of 260	624	svchost.exe	7
PID 624 wrote to memory of 260	624	svchost.exe	7
PID 624 wrote to memory of 260	624	svchost.exe	7
PID 624 wrote to memory of 332	624	svchost.exe	6
PID 624 wrote to memory of 332	624	svchost.exe	6
PID 624 wrote to memory of 332	624	svchost.exe	6
PID 624 wrote to memory of 332	624	svchost.exe	6
PID 624 wrote to memory of 332	624	svchost.exe	6
PID 624 wrote to memory of 368	624	svchost.exe	5
PID 624 wrote to memory of 368	624	svchost.exe	5
PID 624 wrote to memory of 368	624	svchost.exe	5
PID 624 wrote to memory of 368	624	svchost.exe	5
PID 624 wrote to memory of 368	624	svchost.exe	5
PID 624 wrote to memory of 384	624	svchost.exe	4
PID 624 wrote to memory of 384	624	svchost.exe	4
PID 624 wrote to memory of 384	624	svchost.exe	4
PID 624 wrote to memory of 384	624	svchost.exe	4
PID 624 wrote to memory of 384	624	svchost.exe	4
PID 624 wrote to memory of 420	624	svchost.exe	3
PID 624 wrote to memory of 420	624	svchost.exe	3
PID 624 wrote to memory of 420	624	svchost.exe	3
PID 624 wrote to memory of 420	624	svchost.exe	3
PID 624 wrote to memory of 420	624	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:468
- 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:592
- - C:\Windows\system32\wbem\wmiprvse.exe
    C:\Windows\system32\wbem\wmiprvse.exe
    3⤵
    PID:1764
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
  2⤵
  PID:756
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:808
- - C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    3⤵
    PID:1192
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:840
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:284
- 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:1672
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:328
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1044
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1124
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:316
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1816

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:1236
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\9a67ca9394f49740940434eb6aec56e8d95e46fcba069b7a31266adb1ce6ec13.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:864
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\9a67ca9394f49740940434eb6aec56e8d95e46fcba069b7a31266adb1ce6ec13.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1792
  - - 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:1780
    - - 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:1252
      - 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:2040
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:624
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1792 -s 228
      4⤵
      Program crash
      Suspicious use of AdjustPrivilegeToken
      PID:1076

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/624-86-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/624-83-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1252-81-0x0000000000220000-0x0000000000241000-memory.dmp

Filesize
132KB

Download
memory/1252-208-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1252-79-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1780-68-0x00000000003C0000-0x00000000003E1000-memory.dmp

Filesize
132KB

Download
memory/1780-65-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1792-55-0x0000000076321000-0x0000000076323000-memory.dmp

Filesize
8KB

Download
memory/1792-78-0x000000007C340000-0x000000007C3A7000-memory.dmp

Filesize
412KB

Download
memory/2040-80-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/2040-74-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/2040-70-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/2040-209-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download