ramnit | 3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693

Analysis

max time kernel
152s
max time network
124s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
06/11/2022, 10:54

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General

Target

3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693.exe
Size

306KB
MD5

21a6e6806735b48d197c45182ba1f660
SHA1

c460c4725668dc42f592918e35906bbea8bfc244
SHA256

3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693
SHA512

8fbdd81644d0ff128d1eb7b4a1d993cc34b04e45160f58b49f93e2861c4781c567f52b1a8f760d5de8333f641ab7482be958b32a0fa0b5c512a0e3cb42974a6d
SSDEEP

3072:2T2xNfzEmPUac0yCRS9EK0TLm81fk91nW:SkPpe0m8xk91W

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 1 IoCs

pid	Process
1684	WaterMark.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2000-56-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/2000-57-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/2000-61-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1684-68-0x0000000000400000-0x0000000000458000-memory.dmp	upx
behavioral1/memory/1684-69-0x0000000000400000-0x0000000000458000-memory.dmp	upx
behavioral1/memory/1684-182-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
2000	3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693.exe
2000	3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693.exe

Drops file in System32 directory 2 IoCs

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

description	ioc	Process
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\7zFM.exe	svchost.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693.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\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\px5948.tmp	3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1684	WaterMark.exe
1684	WaterMark.exe
1684	WaterMark.exe
1684	WaterMark.exe
1684	WaterMark.exe
1684	WaterMark.exe
1684	WaterMark.exe
1684	WaterMark.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe
520	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1684	WaterMark.exe
Token: SeDebugPrivilege	520	svchost.exe
Token: SeDebugPrivilege	1684	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2000	3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693.exe
1684	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 1684	2000	3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693.exe	26
PID 2000 wrote to memory of 1684	2000	3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693.exe	26
PID 2000 wrote to memory of 1684	2000	3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693.exe	26
PID 2000 wrote to memory of 1684	2000	3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693.exe	26
PID 1684 wrote to memory of 1296	1684	WaterMark.exe	27
PID 1684 wrote to memory of 1296	1684	WaterMark.exe	27
PID 1684 wrote to memory of 1296	1684	WaterMark.exe	27
PID 1684 wrote to memory of 1296	1684	WaterMark.exe	27
PID 1684 wrote to memory of 1296	1684	WaterMark.exe	27
PID 1684 wrote to memory of 1296	1684	WaterMark.exe	27
PID 1684 wrote to memory of 1296	1684	WaterMark.exe	27
PID 1684 wrote to memory of 1296	1684	WaterMark.exe	27
PID 1684 wrote to memory of 1296	1684	WaterMark.exe	27
PID 1684 wrote to memory of 1296	1684	WaterMark.exe	27
PID 1684 wrote to memory of 520	1684	WaterMark.exe	28
PID 1684 wrote to memory of 520	1684	WaterMark.exe	28
PID 1684 wrote to memory of 520	1684	WaterMark.exe	28
PID 1684 wrote to memory of 520	1684	WaterMark.exe	28
PID 1684 wrote to memory of 520	1684	WaterMark.exe	28
PID 1684 wrote to memory of 520	1684	WaterMark.exe	28
PID 1684 wrote to memory of 520	1684	WaterMark.exe	28
PID 1684 wrote to memory of 520	1684	WaterMark.exe	28
PID 1684 wrote to memory of 520	1684	WaterMark.exe	28
PID 1684 wrote to memory of 520	1684	WaterMark.exe	28
PID 520 wrote to memory of 260	520	svchost.exe	7
PID 520 wrote to memory of 260	520	svchost.exe	7
PID 520 wrote to memory of 260	520	svchost.exe	7
PID 520 wrote to memory of 260	520	svchost.exe	7
PID 520 wrote to memory of 260	520	svchost.exe	7
PID 520 wrote to memory of 332	520	svchost.exe	6
PID 520 wrote to memory of 332	520	svchost.exe	6
PID 520 wrote to memory of 332	520	svchost.exe	6
PID 520 wrote to memory of 332	520	svchost.exe	6
PID 520 wrote to memory of 332	520	svchost.exe	6
PID 520 wrote to memory of 368	520	svchost.exe	5
PID 520 wrote to memory of 368	520	svchost.exe	5
PID 520 wrote to memory of 368	520	svchost.exe	5
PID 520 wrote to memory of 368	520	svchost.exe	5
PID 520 wrote to memory of 368	520	svchost.exe	5
PID 520 wrote to memory of 376	520	svchost.exe	4
PID 520 wrote to memory of 376	520	svchost.exe	4
PID 520 wrote to memory of 376	520	svchost.exe	4
PID 520 wrote to memory of 376	520	svchost.exe	4
PID 520 wrote to memory of 376	520	svchost.exe	4
PID 520 wrote to memory of 416	520	svchost.exe	3
PID 520 wrote to memory of 416	520	svchost.exe	3
PID 520 wrote to memory of 416	520	svchost.exe	3
PID 520 wrote to memory of 416	520	svchost.exe	3
PID 520 wrote to memory of 416	520	svchost.exe	3
PID 520 wrote to memory of 460	520	svchost.exe	2
PID 520 wrote to memory of 460	520	svchost.exe	2
PID 520 wrote to memory of 460	520	svchost.exe	2
PID 520 wrote to memory of 460	520	svchost.exe	2
PID 520 wrote to memory of 460	520	svchost.exe	2
PID 520 wrote to memory of 476	520	svchost.exe	1
PID 520 wrote to memory of 476	520	svchost.exe	1
PID 520 wrote to memory of 476	520	svchost.exe	1
PID 520 wrote to memory of 476	520	svchost.exe	1
PID 520 wrote to memory of 476	520	svchost.exe	1
PID 520 wrote to memory of 484	520	svchost.exe	8
PID 520 wrote to memory of 484	520	svchost.exe	8
PID 520 wrote to memory of 484	520	svchost.exe	8
PID 520 wrote to memory of 484	520	svchost.exe	8
PID 520 wrote to memory of 484	520	svchost.exe	8

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\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:872
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:300
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:744
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1804
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1124
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1040
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:108
- 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 LocalSystemNetworkRestricted
  2⤵
  PID:796
- 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 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: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:1168

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1232
- C:\Users\Admin\AppData\Local\Temp\3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693.exe
  "C:\Users\Admin\AppData\Local\Temp\3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:2000
- - 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 UnmapMainImage
    - Suspicious use of WriteProcessMemory
    PID:1684
  - - 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
      PID:1296
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:520

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

Loading Replay Monitor...

Downloads

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

Filesize
306KB

MD5
21a6e6806735b48d197c45182ba1f660

SHA1
c460c4725668dc42f592918e35906bbea8bfc244

SHA256
3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693

SHA512
8fbdd81644d0ff128d1eb7b4a1d993cc34b04e45160f58b49f93e2861c4781c567f52b1a8f760d5de8333f641ab7482be958b32a0fa0b5c512a0e3cb42974a6d

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

Filesize
306KB

MD5
21a6e6806735b48d197c45182ba1f660

SHA1
c460c4725668dc42f592918e35906bbea8bfc244

SHA256
3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693

SHA512
8fbdd81644d0ff128d1eb7b4a1d993cc34b04e45160f58b49f93e2861c4781c567f52b1a8f760d5de8333f641ab7482be958b32a0fa0b5c512a0e3cb42974a6d

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

Filesize
306KB

MD5
21a6e6806735b48d197c45182ba1f660

SHA1
c460c4725668dc42f592918e35906bbea8bfc244

SHA256
3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693

SHA512
8fbdd81644d0ff128d1eb7b4a1d993cc34b04e45160f58b49f93e2861c4781c567f52b1a8f760d5de8333f641ab7482be958b32a0fa0b5c512a0e3cb42974a6d

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

Filesize
306KB

MD5
21a6e6806735b48d197c45182ba1f660

SHA1
c460c4725668dc42f592918e35906bbea8bfc244

SHA256
3e9b80682646b98be6220aae1adbc617c187dc523442669a1aa960db59859693

SHA512
8fbdd81644d0ff128d1eb7b4a1d993cc34b04e45160f58b49f93e2861c4781c567f52b1a8f760d5de8333f641ab7482be958b32a0fa0b5c512a0e3cb42974a6d

Download Submit
memory/520-84-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/520-81-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1296-71-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1296-79-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1296-183-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1296-74-0x00000000754E1000-0x00000000754E3000-memory.dmp

Filesize
8KB

Download
memory/1296-75-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1684-68-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1684-134-0x0000000020021000-0x0000000020028000-memory.dmp

Filesize
28KB

Download
memory/1684-182-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1684-69-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/2000-56-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2000-61-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2000-57-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download