ramnit | 94eed138dd1d5bfc0096ce68fab320f9c19715c2b80e28389de2d459cccaa980

Analysis

max time kernel
206s
max time network
180s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07/11/2022, 17:06

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General

Target

94eed138dd1d5bfc0096ce68fab320f9c19715c2b80e28389de2d459cccaa980.dll
Size

212KB
MD5

049faf33ba7c114d745d210b9135c0a2
SHA1

499cb0addab8ba34f9f3123f70778033db8e88df
SHA256

94eed138dd1d5bfc0096ce68fab320f9c19715c2b80e28389de2d459cccaa980
SHA512

f47b54a4aa762a3c3c6ad4b736f301b105840ca00249d89d83e8766f4e9145164a04b791629ea9c22b9d52e7bba503f7d0af04bafea121602f03794b11c9a17e
SSDEEP

3072:wgKKuiX63bw5dNjDh8pWVgTlFIYntSUDONp/kYxXUKBAUCkHhDW:hKZp3KNjVGv0Tp/kYxXUPeRW

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
1492	rundll32mgr.exe
1988	WaterMark.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1492-64-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1492-63-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1492-70-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1988-81-0x0000000000400000-0x0000000000476000-memory.dmp	upx
behavioral1/memory/1988-83-0x0000000000400000-0x0000000000476000-memory.dmp	upx
behavioral1/memory/1988-195-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1020	rundll32.exe
1020	rundll32.exe
1492	rundll32mgr.exe
1492	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 4 IoCs

description	ioc	Process
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

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1988	WaterMark.exe
1988	WaterMark.exe
1988	WaterMark.exe
1988	WaterMark.exe
1988	WaterMark.exe
1988	WaterMark.exe
1988	WaterMark.exe
1988	WaterMark.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe
364	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1988	WaterMark.exe
Token: SeDebugPrivilege	364	svchost.exe
Token: SeDebugPrivilege	1988	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1492	rundll32mgr.exe
1988	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1176 wrote to memory of 1020	1176	rundll32.exe	27
PID 1176 wrote to memory of 1020	1176	rundll32.exe	27
PID 1176 wrote to memory of 1020	1176	rundll32.exe	27
PID 1176 wrote to memory of 1020	1176	rundll32.exe	27
PID 1176 wrote to memory of 1020	1176	rundll32.exe	27
PID 1176 wrote to memory of 1020	1176	rundll32.exe	27
PID 1176 wrote to memory of 1020	1176	rundll32.exe	27
PID 1020 wrote to memory of 1492	1020	rundll32.exe	28
PID 1020 wrote to memory of 1492	1020	rundll32.exe	28
PID 1020 wrote to memory of 1492	1020	rundll32.exe	28
PID 1020 wrote to memory of 1492	1020	rundll32.exe	28
PID 1492 wrote to memory of 1988	1492	rundll32mgr.exe	29
PID 1492 wrote to memory of 1988	1492	rundll32mgr.exe	29
PID 1492 wrote to memory of 1988	1492	rundll32mgr.exe	29
PID 1492 wrote to memory of 1988	1492	rundll32mgr.exe	29
PID 1988 wrote to memory of 1468	1988	WaterMark.exe	30
PID 1988 wrote to memory of 1468	1988	WaterMark.exe	30
PID 1988 wrote to memory of 1468	1988	WaterMark.exe	30
PID 1988 wrote to memory of 1468	1988	WaterMark.exe	30
PID 1988 wrote to memory of 1468	1988	WaterMark.exe	30
PID 1988 wrote to memory of 1468	1988	WaterMark.exe	30
PID 1988 wrote to memory of 1468	1988	WaterMark.exe	30
PID 1988 wrote to memory of 1468	1988	WaterMark.exe	30
PID 1988 wrote to memory of 1468	1988	WaterMark.exe	30
PID 1988 wrote to memory of 1468	1988	WaterMark.exe	30
PID 1988 wrote to memory of 364	1988	WaterMark.exe	31
PID 1988 wrote to memory of 364	1988	WaterMark.exe	31
PID 1988 wrote to memory of 364	1988	WaterMark.exe	31
PID 1988 wrote to memory of 364	1988	WaterMark.exe	31
PID 1988 wrote to memory of 364	1988	WaterMark.exe	31
PID 1988 wrote to memory of 364	1988	WaterMark.exe	31
PID 1988 wrote to memory of 364	1988	WaterMark.exe	31
PID 1988 wrote to memory of 364	1988	WaterMark.exe	31
PID 1988 wrote to memory of 364	1988	WaterMark.exe	31
PID 1988 wrote to memory of 364	1988	WaterMark.exe	31
PID 364 wrote to memory of 260	364	svchost.exe	25
PID 364 wrote to memory of 260	364	svchost.exe	25
PID 364 wrote to memory of 260	364	svchost.exe	25
PID 364 wrote to memory of 260	364	svchost.exe	25
PID 364 wrote to memory of 260	364	svchost.exe	25
PID 364 wrote to memory of 332	364	svchost.exe	24
PID 364 wrote to memory of 332	364	svchost.exe	24
PID 364 wrote to memory of 332	364	svchost.exe	24
PID 364 wrote to memory of 332	364	svchost.exe	24
PID 364 wrote to memory of 332	364	svchost.exe	24
PID 364 wrote to memory of 368	364	svchost.exe	23
PID 364 wrote to memory of 368	364	svchost.exe	23
PID 364 wrote to memory of 368	364	svchost.exe	23
PID 364 wrote to memory of 368	364	svchost.exe	23
PID 364 wrote to memory of 368	364	svchost.exe	23
PID 364 wrote to memory of 376	364	svchost.exe	4
PID 364 wrote to memory of 376	364	svchost.exe	4
PID 364 wrote to memory of 376	364	svchost.exe	4
PID 364 wrote to memory of 376	364	svchost.exe	4
PID 364 wrote to memory of 376	364	svchost.exe	4
PID 364 wrote to memory of 416	364	svchost.exe	3
PID 364 wrote to memory of 416	364	svchost.exe	3
PID 364 wrote to memory of 416	364	svchost.exe	3
PID 364 wrote to memory of 416	364	svchost.exe	3
PID 364 wrote to memory of 416	364	svchost.exe	3
PID 364 wrote to memory of 460	364	svchost.exe	2
PID 364 wrote to memory of 460	364	svchost.exe	2
PID 364 wrote to memory of 460	364	svchost.exe	2
PID 364 wrote to memory of 460	364	svchost.exe	2

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:868
- - \\?\C:\Windows\system32\wbem\WMIADAP.EXE
    wmiadap.exe /F /T /R
    3⤵
    PID:1660
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1584
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1544
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1244
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:592
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:1008
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:296
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:824
- 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:740
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:652
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:576

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\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1412
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\94eed138dd1d5bfc0096ce68fab320f9c19715c2b80e28389de2d459cccaa980.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1176
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\94eed138dd1d5bfc0096ce68fab320f9c19715c2b80e28389de2d459cccaa980.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:1020
  - - 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:1492
    - - 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:1988
      - 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:1468
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:364

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1348

C:\Windows\system32\lsm.exe
C:\Windows\system32\lsm.exe
1⤵
PID:484

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:368

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

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
95KB

MD5
406159c750552b5507de7ddc58331f84

SHA1
17b76dd75ed8fea0c724665a119eb634e1ce241c

SHA256
141f156e86923e77eaf86e4889a3a860bee9409849638b825bbf970d72b8f3cf

SHA512
158ae6a016e94ec57b3213301c27953b59367294a0888634a4a952a8c569975aeaf5bad70f8649510cbb7e7c6ce7d1232535e22dad8b6b7f16f21a42d4630a0f

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

Filesize
95KB

MD5
406159c750552b5507de7ddc58331f84

SHA1
17b76dd75ed8fea0c724665a119eb634e1ce241c

SHA256
141f156e86923e77eaf86e4889a3a860bee9409849638b825bbf970d72b8f3cf

SHA512
158ae6a016e94ec57b3213301c27953b59367294a0888634a4a952a8c569975aeaf5bad70f8649510cbb7e7c6ce7d1232535e22dad8b6b7f16f21a42d4630a0f

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

Filesize
95KB

MD5
406159c750552b5507de7ddc58331f84

SHA1
17b76dd75ed8fea0c724665a119eb634e1ce241c

SHA256
141f156e86923e77eaf86e4889a3a860bee9409849638b825bbf970d72b8f3cf

SHA512
158ae6a016e94ec57b3213301c27953b59367294a0888634a4a952a8c569975aeaf5bad70f8649510cbb7e7c6ce7d1232535e22dad8b6b7f16f21a42d4630a0f

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

Filesize
95KB

MD5
406159c750552b5507de7ddc58331f84

SHA1
17b76dd75ed8fea0c724665a119eb634e1ce241c

SHA256
141f156e86923e77eaf86e4889a3a860bee9409849638b825bbf970d72b8f3cf

SHA512
158ae6a016e94ec57b3213301c27953b59367294a0888634a4a952a8c569975aeaf5bad70f8649510cbb7e7c6ce7d1232535e22dad8b6b7f16f21a42d4630a0f

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

Filesize
95KB

MD5
406159c750552b5507de7ddc58331f84

SHA1
17b76dd75ed8fea0c724665a119eb634e1ce241c

SHA256
141f156e86923e77eaf86e4889a3a860bee9409849638b825bbf970d72b8f3cf

SHA512
158ae6a016e94ec57b3213301c27953b59367294a0888634a4a952a8c569975aeaf5bad70f8649510cbb7e7c6ce7d1232535e22dad8b6b7f16f21a42d4630a0f

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

Filesize
95KB

MD5
406159c750552b5507de7ddc58331f84

SHA1
17b76dd75ed8fea0c724665a119eb634e1ce241c

SHA256
141f156e86923e77eaf86e4889a3a860bee9409849638b825bbf970d72b8f3cf

SHA512
158ae6a016e94ec57b3213301c27953b59367294a0888634a4a952a8c569975aeaf5bad70f8649510cbb7e7c6ce7d1232535e22dad8b6b7f16f21a42d4630a0f

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
95KB

MD5
406159c750552b5507de7ddc58331f84

SHA1
17b76dd75ed8fea0c724665a119eb634e1ce241c

SHA256
141f156e86923e77eaf86e4889a3a860bee9409849638b825bbf970d72b8f3cf

SHA512
158ae6a016e94ec57b3213301c27953b59367294a0888634a4a952a8c569975aeaf5bad70f8649510cbb7e7c6ce7d1232535e22dad8b6b7f16f21a42d4630a0f

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
95KB

MD5
406159c750552b5507de7ddc58331f84

SHA1
17b76dd75ed8fea0c724665a119eb634e1ce241c

SHA256
141f156e86923e77eaf86e4889a3a860bee9409849638b825bbf970d72b8f3cf

SHA512
158ae6a016e94ec57b3213301c27953b59367294a0888634a4a952a8c569975aeaf5bad70f8649510cbb7e7c6ce7d1232535e22dad8b6b7f16f21a42d4630a0f

Download Submit
memory/364-93-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/364-90-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1020-55-0x0000000075091000-0x0000000075093000-memory.dmp

Filesize
8KB

Download
memory/1468-84-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1468-196-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1468-78-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1468-88-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1492-70-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1492-63-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1492-64-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1988-83-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1988-81-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1988-195-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download