ramnit | 3cd22f0206412c6379dac495d70d9689b8a01d376265da7495b579c2f3f2af82

Analysis

max time kernel
152s
max time network
138s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
30/10/2022, 23:15

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General

Target

3cd22f0206412c6379dac495d70d9689b8a01d376265da7495b579c2f3f2af82.dll
Size

460KB
MD5

a1717f3a5d0e4d5fa02177bbe065c93b
SHA1

2aa76d49aea2c544372484147bf06ae07e777636
SHA256

3cd22f0206412c6379dac495d70d9689b8a01d376265da7495b579c2f3f2af82
SHA512

1209a16e9a27f732588e61b7dbf8dc0f4d90340f10f7dc16d85908af2b85d43ef6be235be87a1d7db4b40f23cc1b3e466112d530f6ed80a917aab8b520c15a62
SSDEEP

6144:J/gxI5p8RC6JL0OFLm1I7AV4COHEQeewQeelQeesQeeudQeefQeeZKwQBIoqhvJc:WxI5QLM1aw4CIoqhKWjwNS4SwZXww

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
1784	regsvr32mgr.exe
1628	WaterMark.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1784-63-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1784-64-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1784-70-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1628-85-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral1/memory/1628-197-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1360	regsvr32.exe
1360	regsvr32.exe
1784	regsvr32mgr.exe
1784	regsvr32mgr.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\regsvr32mgr.exe	regsvr32.exe

Drops file in Program Files directory 10 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	regsvr32mgr.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
File opened for modification	C:\Program Files\7-Zip\7zG.exe	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\pxFE0E.tmp	regsvr32mgr.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	regsvr32mgr.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

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C58F1580-0DF3-401C-93B1-2D9DDA61CF04}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C58F1580-0DF3-401C-93B1-2D9DDA61CF04}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C58F1580-0DF3-401C-93B1-2D9DDA61CF04}\1.0	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1628	WaterMark.exe
1628	WaterMark.exe
1628	WaterMark.exe
1628	WaterMark.exe
1628	WaterMark.exe
1628	WaterMark.exe
1628	WaterMark.exe
1628	WaterMark.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe
436	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1628	WaterMark.exe
Token: SeDebugPrivilege	436	svchost.exe
Token: SeDebugPrivilege	1628	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1784	regsvr32mgr.exe
1628	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 1360	1972	regsvr32.exe	28
PID 1972 wrote to memory of 1360	1972	regsvr32.exe	28
PID 1972 wrote to memory of 1360	1972	regsvr32.exe	28
PID 1972 wrote to memory of 1360	1972	regsvr32.exe	28
PID 1972 wrote to memory of 1360	1972	regsvr32.exe	28
PID 1972 wrote to memory of 1360	1972	regsvr32.exe	28
PID 1972 wrote to memory of 1360	1972	regsvr32.exe	28
PID 1360 wrote to memory of 1784	1360	regsvr32.exe	29
PID 1360 wrote to memory of 1784	1360	regsvr32.exe	29
PID 1360 wrote to memory of 1784	1360	regsvr32.exe	29
PID 1360 wrote to memory of 1784	1360	regsvr32.exe	29
PID 1784 wrote to memory of 1628	1784	regsvr32mgr.exe	30
PID 1784 wrote to memory of 1628	1784	regsvr32mgr.exe	30
PID 1784 wrote to memory of 1628	1784	regsvr32mgr.exe	30
PID 1784 wrote to memory of 1628	1784	regsvr32mgr.exe	30
PID 1628 wrote to memory of 1676	1628	WaterMark.exe	31
PID 1628 wrote to memory of 1676	1628	WaterMark.exe	31
PID 1628 wrote to memory of 1676	1628	WaterMark.exe	31
PID 1628 wrote to memory of 1676	1628	WaterMark.exe	31
PID 1628 wrote to memory of 1676	1628	WaterMark.exe	31
PID 1628 wrote to memory of 1676	1628	WaterMark.exe	31
PID 1628 wrote to memory of 1676	1628	WaterMark.exe	31
PID 1628 wrote to memory of 1676	1628	WaterMark.exe	31
PID 1628 wrote to memory of 1676	1628	WaterMark.exe	31
PID 1628 wrote to memory of 1676	1628	WaterMark.exe	31
PID 1628 wrote to memory of 436	1628	WaterMark.exe	32
PID 1628 wrote to memory of 436	1628	WaterMark.exe	32
PID 1628 wrote to memory of 436	1628	WaterMark.exe	32
PID 1628 wrote to memory of 436	1628	WaterMark.exe	32
PID 1628 wrote to memory of 436	1628	WaterMark.exe	32
PID 1628 wrote to memory of 436	1628	WaterMark.exe	32
PID 1628 wrote to memory of 436	1628	WaterMark.exe	32
PID 1628 wrote to memory of 436	1628	WaterMark.exe	32
PID 1628 wrote to memory of 436	1628	WaterMark.exe	32
PID 1628 wrote to memory of 436	1628	WaterMark.exe	32
PID 436 wrote to memory of 260	436	svchost.exe	7
PID 436 wrote to memory of 260	436	svchost.exe	7
PID 436 wrote to memory of 260	436	svchost.exe	7
PID 436 wrote to memory of 260	436	svchost.exe	7
PID 436 wrote to memory of 260	436	svchost.exe	7
PID 436 wrote to memory of 332	436	svchost.exe	6
PID 436 wrote to memory of 332	436	svchost.exe	6
PID 436 wrote to memory of 332	436	svchost.exe	6
PID 436 wrote to memory of 332	436	svchost.exe	6
PID 436 wrote to memory of 332	436	svchost.exe	6
PID 436 wrote to memory of 368	436	svchost.exe	5
PID 436 wrote to memory of 368	436	svchost.exe	5
PID 436 wrote to memory of 368	436	svchost.exe	5
PID 436 wrote to memory of 368	436	svchost.exe	5
PID 436 wrote to memory of 368	436	svchost.exe	5
PID 436 wrote to memory of 384	436	svchost.exe	4
PID 436 wrote to memory of 384	436	svchost.exe	4
PID 436 wrote to memory of 384	436	svchost.exe	4
PID 436 wrote to memory of 384	436	svchost.exe	4
PID 436 wrote to memory of 384	436	svchost.exe	4
PID 436 wrote to memory of 420	436	svchost.exe	3
PID 436 wrote to memory of 420	436	svchost.exe	3
PID 436 wrote to memory of 420	436	svchost.exe	3
PID 436 wrote to memory of 420	436	svchost.exe	3
PID 436 wrote to memory of 420	436	svchost.exe	3
PID 436 wrote to memory of 464	436	svchost.exe	2
PID 436 wrote to memory of 464	436	svchost.exe	2
PID 436 wrote to memory of 464	436	svchost.exe	2
PID 436 wrote to memory of 464	436	svchost.exe	2

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 RPCSS
  2⤵
  PID:680
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:812
- - C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    3⤵
    PID:1188
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:324
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1940
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1648
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1116
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1096
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:1036
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:884
- 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 LocalServiceNetworkRestricted
  2⤵
  PID:752
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:604

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: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:332

C:\Windows\System32\smss.exe
\SystemRoot\System32\smss.exe
1⤵
PID:260

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1216
- C:\Windows\system32\regsvr32.exe
  regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3cd22f0206412c6379dac495d70d9689b8a01d376265da7495b579c2f3f2af82.dll
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1972
- - C:\Windows\SysWOW64\regsvr32.exe
    /s C:\Users\Admin\AppData\Local\Temp\3cd22f0206412c6379dac495d70d9689b8a01d376265da7495b579c2f3f2af82.dll
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:1360
  - - C:\Windows\SysWOW64\regsvr32mgr.exe
      C:\Windows\SysWOW64\regsvr32mgr.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Drops file in Program Files directory
      Suspicious use of UnmapMainImage
      Suspicious use of WriteProcessMemory
      PID:1784
    - - 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:1628
      - 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:1676
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:436

C:\Windows\system32\wbem\wmiprvse.exe
C:\Windows\system32\wbem\wmiprvse.exe
1⤵
PID:1804

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1136

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
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

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

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

Download Submit
C:\Windows\SysWOW64\regsvr32mgr.exe

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

Download Submit
C:\Windows\SysWOW64\regsvr32mgr.exe

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

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

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

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

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

Download Submit
\Windows\SysWOW64\regsvr32mgr.exe

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

Download Submit
\Windows\SysWOW64\regsvr32mgr.exe

Filesize
119KB

MD5
9d5d609dc8e2554054733d19eed45c5c

SHA1
ce72453fca9f477940a9def32bd8463549c6e1e4

SHA256
7a85b3db04beb0c4b6a8929fdf79726bcf1084efab0a9f04a8ebaa0a2bc9e0b1

SHA512
012cabde17ed1c1d1a48b5bc136591ff9c8e261e5da8bc7f67d0bd235a32150f63274362cdeef2376d2d5a38dfb0c9acc7cd3aa5244c1858b88b183f8cbe550b

Download Submit
memory/436-91-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/436-88-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1360-56-0x00000000751A1000-0x00000000751A3000-memory.dmp

Filesize
8KB

Download
memory/1628-85-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1628-197-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1676-86-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1676-81-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1676-77-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1676-198-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1784-64-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1784-70-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1784-63-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1972-54-0x000007FEFBD01000-0x000007FEFBD03000-memory.dmp

Filesize
8KB

Download