ramnit | e5e6b02ccf83b2edc9e1894a717b2c9114d2fd984617867b59d10922ec908807

Analysis

max time kernel
151s
max time network
131s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
30/10/2022, 19:13

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General

Target

e5e6b02ccf83b2edc9e1894a717b2c9114d2fd984617867b59d10922ec908807.dll
Size

529KB
MD5

828efd221790e2a87cea95207e731ea9
SHA1

811810bc5fa0ed61fc81edf131b7931bbd72c746
SHA256

e5e6b02ccf83b2edc9e1894a717b2c9114d2fd984617867b59d10922ec908807
SHA512

7fdc73e60b9bdcbda99d6c314d83e69ff4c09d2d92c530a7bb326e4aa7e912a06533a688454cc27bd5500305b31a137aefb0604228c0f12239c05348a8c8206f
SSDEEP

12288:RzA5lZhy6RpB/6eXMVVLrkwTzCunpKI13YEqWpKHEFfo3A:RzA5HhRPSeX2VHkuzRnpz1ouKHxA

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
1324	rundll32mgr.exe
1656	WaterMark.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1324-64-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1324-65-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1324-71-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1656-85-0x0000000000400000-0x0000000000428000-memory.dmp	upx
behavioral1/memory/1656-213-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1172	rundll32.exe
1172	rundll32.exe
1324	rundll32mgr.exe
1324	rundll32mgr.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dmlconf.dat	svchost.exe
File opened for modification	C:\Windows\SysWOW64\dmlconf.dat	svchost.exe
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.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\px474E.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\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 (x86)\Microsoft\WaterMark.exe	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\7zFM.exe	svchost.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1600	1172	WerFault.exe	27

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
1656	WaterMark.exe
1656	WaterMark.exe
1656	WaterMark.exe
1656	WaterMark.exe
1656	WaterMark.exe
1656	WaterMark.exe
1656	WaterMark.exe
1656	WaterMark.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe
1880	svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1656	WaterMark.exe
Token: SeDebugPrivilege	1880	svchost.exe
Token: SeDebugPrivilege	1172	rundll32.exe
Token: SeDebugPrivilege	1600	WerFault.exe
Token: SeDebugPrivilege	1656	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1324	rundll32mgr.exe
1656	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 1172	1132	rundll32.exe	27
PID 1132 wrote to memory of 1172	1132	rundll32.exe	27
PID 1132 wrote to memory of 1172	1132	rundll32.exe	27
PID 1132 wrote to memory of 1172	1132	rundll32.exe	27
PID 1132 wrote to memory of 1172	1132	rundll32.exe	27
PID 1132 wrote to memory of 1172	1132	rundll32.exe	27
PID 1132 wrote to memory of 1172	1132	rundll32.exe	27
PID 1172 wrote to memory of 1324	1172	rundll32.exe	28
PID 1172 wrote to memory of 1324	1172	rundll32.exe	28
PID 1172 wrote to memory of 1324	1172	rundll32.exe	28
PID 1172 wrote to memory of 1324	1172	rundll32.exe	28
PID 1324 wrote to memory of 1656	1324	rundll32mgr.exe	30
PID 1324 wrote to memory of 1656	1324	rundll32mgr.exe	30
PID 1324 wrote to memory of 1656	1324	rundll32mgr.exe	30
PID 1324 wrote to memory of 1656	1324	rundll32mgr.exe	30
PID 1172 wrote to memory of 1600	1172	rundll32.exe	29
PID 1172 wrote to memory of 1600	1172	rundll32.exe	29
PID 1172 wrote to memory of 1600	1172	rundll32.exe	29
PID 1172 wrote to memory of 1600	1172	rundll32.exe	29
PID 1656 wrote to memory of 1612	1656	WaterMark.exe	31
PID 1656 wrote to memory of 1612	1656	WaterMark.exe	31
PID 1656 wrote to memory of 1612	1656	WaterMark.exe	31
PID 1656 wrote to memory of 1612	1656	WaterMark.exe	31
PID 1656 wrote to memory of 1612	1656	WaterMark.exe	31
PID 1656 wrote to memory of 1612	1656	WaterMark.exe	31
PID 1656 wrote to memory of 1612	1656	WaterMark.exe	31
PID 1656 wrote to memory of 1612	1656	WaterMark.exe	31
PID 1656 wrote to memory of 1612	1656	WaterMark.exe	31
PID 1656 wrote to memory of 1612	1656	WaterMark.exe	31
PID 1656 wrote to memory of 1880	1656	WaterMark.exe	32
PID 1656 wrote to memory of 1880	1656	WaterMark.exe	32
PID 1656 wrote to memory of 1880	1656	WaterMark.exe	32
PID 1656 wrote to memory of 1880	1656	WaterMark.exe	32
PID 1656 wrote to memory of 1880	1656	WaterMark.exe	32
PID 1656 wrote to memory of 1880	1656	WaterMark.exe	32
PID 1656 wrote to memory of 1880	1656	WaterMark.exe	32
PID 1656 wrote to memory of 1880	1656	WaterMark.exe	32
PID 1656 wrote to memory of 1880	1656	WaterMark.exe	32
PID 1656 wrote to memory of 1880	1656	WaterMark.exe	32
PID 1880 wrote to memory of 260	1880	svchost.exe	7
PID 1880 wrote to memory of 260	1880	svchost.exe	7
PID 1880 wrote to memory of 260	1880	svchost.exe	7
PID 1880 wrote to memory of 260	1880	svchost.exe	7
PID 1880 wrote to memory of 260	1880	svchost.exe	7
PID 1880 wrote to memory of 336	1880	svchost.exe	6
PID 1880 wrote to memory of 336	1880	svchost.exe	6
PID 1880 wrote to memory of 336	1880	svchost.exe	6
PID 1880 wrote to memory of 336	1880	svchost.exe	6
PID 1880 wrote to memory of 336	1880	svchost.exe	6
PID 1880 wrote to memory of 372	1880	svchost.exe	5
PID 1880 wrote to memory of 372	1880	svchost.exe	5
PID 1880 wrote to memory of 372	1880	svchost.exe	5
PID 1880 wrote to memory of 372	1880	svchost.exe	5
PID 1880 wrote to memory of 372	1880	svchost.exe	5
PID 1880 wrote to memory of 380	1880	svchost.exe	4
PID 1880 wrote to memory of 380	1880	svchost.exe	4
PID 1880 wrote to memory of 380	1880	svchost.exe	4
PID 1880 wrote to memory of 380	1880	svchost.exe	4
PID 1880 wrote to memory of 380	1880	svchost.exe	4
PID 1880 wrote to memory of 420	1880	svchost.exe	3
PID 1880 wrote to memory of 420	1880	svchost.exe	3
PID 1880 wrote to memory of 420	1880	svchost.exe	3
PID 1880 wrote to memory of 420	1880	svchost.exe	3
PID 1880 wrote to memory of 420	1880	svchost.exe	3

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
PID:480

C:\Windows\system32\services.exe
C:\Windows\system32\services.exe
1⤵
PID:464
- 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:1176
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:1056
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1152
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1976
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1936
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1084
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:328
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:868
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:828
- 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:660
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:580

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:380

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:372
- C:\Windows\system32\lsm.exe
  C:\Windows\system32\lsm.exe
  2⤵
  PID:488

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:1212
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e5e6b02ccf83b2edc9e1894a717b2c9114d2fd984617867b59d10922ec908807.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1132
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\e5e6b02ccf83b2edc9e1894a717b2c9114d2fd984617867b59d10922ec908807.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1172
  - - 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 UnmapMainImage
      Suspicious use of WriteProcessMemory
      PID:1324
    - - 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 UnmapMainImage
        Suspicious use of WriteProcessMemory
        
        PID:1656
      - 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:1612
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1880
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 224
      4⤵
      Program crash
      Suspicious use of AdjustPrivilegeToken
      PID:1600

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1208

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
119KB

MD5
b313c611c4280feba76564194b05c1eb

SHA1
16d9cbab9fb369ddcd6f6e33cdaf977fe3d34c8c

SHA256
bd7b3cb1c8d032fe5dddbe74ce0cba8df770b7545e550f6bf216ab2cdd4ff87f

SHA512
691d9d8f27e83df242216087362f45d35e7387ec56169bd9af5b9309838be70c5c042fe6bc9c0152db870696df0a0e4f369950dd9d18c65403c72d8293f74f0b

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

Filesize
119KB

MD5
b313c611c4280feba76564194b05c1eb

SHA1
16d9cbab9fb369ddcd6f6e33cdaf977fe3d34c8c

SHA256
bd7b3cb1c8d032fe5dddbe74ce0cba8df770b7545e550f6bf216ab2cdd4ff87f

SHA512
691d9d8f27e83df242216087362f45d35e7387ec56169bd9af5b9309838be70c5c042fe6bc9c0152db870696df0a0e4f369950dd9d18c65403c72d8293f74f0b

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

Filesize
119KB

MD5
b313c611c4280feba76564194b05c1eb

SHA1
16d9cbab9fb369ddcd6f6e33cdaf977fe3d34c8c

SHA256
bd7b3cb1c8d032fe5dddbe74ce0cba8df770b7545e550f6bf216ab2cdd4ff87f

SHA512
691d9d8f27e83df242216087362f45d35e7387ec56169bd9af5b9309838be70c5c042fe6bc9c0152db870696df0a0e4f369950dd9d18c65403c72d8293f74f0b

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

Filesize
119KB

MD5
b313c611c4280feba76564194b05c1eb

SHA1
16d9cbab9fb369ddcd6f6e33cdaf977fe3d34c8c

SHA256
bd7b3cb1c8d032fe5dddbe74ce0cba8df770b7545e550f6bf216ab2cdd4ff87f

SHA512
691d9d8f27e83df242216087362f45d35e7387ec56169bd9af5b9309838be70c5c042fe6bc9c0152db870696df0a0e4f369950dd9d18c65403c72d8293f74f0b

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

Filesize
119KB

MD5
b313c611c4280feba76564194b05c1eb

SHA1
16d9cbab9fb369ddcd6f6e33cdaf977fe3d34c8c

SHA256
bd7b3cb1c8d032fe5dddbe74ce0cba8df770b7545e550f6bf216ab2cdd4ff87f

SHA512
691d9d8f27e83df242216087362f45d35e7387ec56169bd9af5b9309838be70c5c042fe6bc9c0152db870696df0a0e4f369950dd9d18c65403c72d8293f74f0b

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

Filesize
119KB

MD5
b313c611c4280feba76564194b05c1eb

SHA1
16d9cbab9fb369ddcd6f6e33cdaf977fe3d34c8c

SHA256
bd7b3cb1c8d032fe5dddbe74ce0cba8df770b7545e550f6bf216ab2cdd4ff87f

SHA512
691d9d8f27e83df242216087362f45d35e7387ec56169bd9af5b9309838be70c5c042fe6bc9c0152db870696df0a0e4f369950dd9d18c65403c72d8293f74f0b

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
119KB

MD5
b313c611c4280feba76564194b05c1eb

SHA1
16d9cbab9fb369ddcd6f6e33cdaf977fe3d34c8c

SHA256
bd7b3cb1c8d032fe5dddbe74ce0cba8df770b7545e550f6bf216ab2cdd4ff87f

SHA512
691d9d8f27e83df242216087362f45d35e7387ec56169bd9af5b9309838be70c5c042fe6bc9c0152db870696df0a0e4f369950dd9d18c65403c72d8293f74f0b

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
119KB

MD5
b313c611c4280feba76564194b05c1eb

SHA1
16d9cbab9fb369ddcd6f6e33cdaf977fe3d34c8c

SHA256
bd7b3cb1c8d032fe5dddbe74ce0cba8df770b7545e550f6bf216ab2cdd4ff87f

SHA512
691d9d8f27e83df242216087362f45d35e7387ec56169bd9af5b9309838be70c5c042fe6bc9c0152db870696df0a0e4f369950dd9d18c65403c72d8293f74f0b

Download Submit
memory/1172-887-0x0000000074620000-0x00000000746AB000-memory.dmp

Filesize
556KB

Download
memory/1172-888-0x00000000001B0000-0x00000000001D8000-memory.dmp

Filesize
160KB

Download
memory/1172-57-0x0000000074620000-0x00000000746AB000-memory.dmp

Filesize
556KB

Download
memory/1172-83-0x00000000001B0000-0x00000000001D8000-memory.dmp

Filesize
160KB

Download
memory/1172-56-0x00000000746B0000-0x000000007473B000-memory.dmp

Filesize
556KB

Download
memory/1172-82-0x00000000001B0000-0x00000000001D8000-memory.dmp

Filesize
160KB

Download
memory/1172-55-0x0000000075561000-0x0000000075563000-memory.dmp

Filesize
8KB

Download
memory/1324-64-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1324-71-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1324-65-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1612-86-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1612-90-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1612-214-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1612-79-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1656-85-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1656-213-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1880-92-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1880-95-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download