ramnit | 6f852393f04fc33bc333c65f4e48721323675d8781b253f31e8dfb3bcf8248ae

Analysis

max time kernel
150s
max time network
145s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04/12/2022, 02:14

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

6f852393f04fc33bc333c65f4e48721323675d8781b253f31e8dfb3bcf8248ae.dll
Size

472KB
MD5

e0c9cb9c18f7d70d93f8cdbd74aca8f0
SHA1

ab75ec6d2eb52bcc96a417a1016a1d23f9646727
SHA256

6f852393f04fc33bc333c65f4e48721323675d8781b253f31e8dfb3bcf8248ae
SHA512

9682db021de10265efecdf376950391f5ac09016dc5d9792339355feed67044e1d4e7028e42909f34d1b0552b82260ce105e5cb7c5af9aabd591e03d1b5bdaa2
SSDEEP

12288:WehnaNPpSVZmNxRCwnwm3W3OHIIf5yC1l4:Weh0PpS6NxNnwYeOHX0C1l

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
1948	rundll32Srv.exe
1128	WaterMark.exe

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000005c50-56.dat	upx
behavioral1/memory/1172-58-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral1/files/0x0007000000005c50-59.dat	upx
behavioral1/files/0x0007000000005c50-61.dat	upx
behavioral1/files/0x0007000000005c50-63.dat	upx
behavioral1/files/0x000b0000000122ce-64.dat	upx
behavioral1/files/0x000b0000000122ce-65.dat	upx
behavioral1/files/0x000b0000000122ce-67.dat	upx
behavioral1/memory/1948-68-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral1/memory/1128-70-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral1/files/0x000b0000000122ce-71.dat	upx
behavioral1/memory/1128-81-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral1/memory/1128-207-0x0000000000400000-0x000000000045B000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1172	rundll32.exe
1172	rundll32.exe
1948	rundll32Srv.exe
1948	rundll32Srv.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\rundll32Srv.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\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\px4D95.tmp	rundll32Srv.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32Srv.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.dll	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32Srv.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
1940	1172	WerFault.exe	26

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
1128	WaterMark.exe
1128	WaterMark.exe
1128	WaterMark.exe
1128	WaterMark.exe
1128	WaterMark.exe
1128	WaterMark.exe
1128	WaterMark.exe
1128	WaterMark.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe
1640	svchost.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1128	WaterMark.exe
Token: SeDebugPrivilege	1640	svchost.exe
Token: SeDebugPrivilege	1172	rundll32.exe
Token: SeDebugPrivilege	1940	WerFault.exe
Token: SeDebugPrivilege	1128	WaterMark.exe
Token: SeDebugPrivilege	1108	svchost.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1584 wrote to memory of 1172	1584	rundll32.exe	26
PID 1584 wrote to memory of 1172	1584	rundll32.exe	26
PID 1584 wrote to memory of 1172	1584	rundll32.exe	26
PID 1584 wrote to memory of 1172	1584	rundll32.exe	26
PID 1584 wrote to memory of 1172	1584	rundll32.exe	26
PID 1584 wrote to memory of 1172	1584	rundll32.exe	26
PID 1584 wrote to memory of 1172	1584	rundll32.exe	26
PID 1172 wrote to memory of 1948	1172	rundll32.exe	27
PID 1172 wrote to memory of 1948	1172	rundll32.exe	27
PID 1172 wrote to memory of 1948	1172	rundll32.exe	27
PID 1172 wrote to memory of 1948	1172	rundll32.exe	27
PID 1172 wrote to memory of 1940	1172	rundll32.exe	28
PID 1172 wrote to memory of 1940	1172	rundll32.exe	28
PID 1172 wrote to memory of 1940	1172	rundll32.exe	28
PID 1172 wrote to memory of 1940	1172	rundll32.exe	28
PID 1948 wrote to memory of 1128	1948	rundll32Srv.exe	29
PID 1948 wrote to memory of 1128	1948	rundll32Srv.exe	29
PID 1948 wrote to memory of 1128	1948	rundll32Srv.exe	29
PID 1948 wrote to memory of 1128	1948	rundll32Srv.exe	29
PID 1128 wrote to memory of 1108	1128	WaterMark.exe	30
PID 1128 wrote to memory of 1108	1128	WaterMark.exe	30
PID 1128 wrote to memory of 1108	1128	WaterMark.exe	30
PID 1128 wrote to memory of 1108	1128	WaterMark.exe	30
PID 1128 wrote to memory of 1108	1128	WaterMark.exe	30
PID 1128 wrote to memory of 1108	1128	WaterMark.exe	30
PID 1128 wrote to memory of 1108	1128	WaterMark.exe	30
PID 1128 wrote to memory of 1108	1128	WaterMark.exe	30
PID 1128 wrote to memory of 1108	1128	WaterMark.exe	30
PID 1128 wrote to memory of 1108	1128	WaterMark.exe	30
PID 1128 wrote to memory of 1640	1128	WaterMark.exe	31
PID 1128 wrote to memory of 1640	1128	WaterMark.exe	31
PID 1128 wrote to memory of 1640	1128	WaterMark.exe	31
PID 1128 wrote to memory of 1640	1128	WaterMark.exe	31
PID 1128 wrote to memory of 1640	1128	WaterMark.exe	31
PID 1128 wrote to memory of 1640	1128	WaterMark.exe	31
PID 1128 wrote to memory of 1640	1128	WaterMark.exe	31
PID 1128 wrote to memory of 1640	1128	WaterMark.exe	31
PID 1128 wrote to memory of 1640	1128	WaterMark.exe	31
PID 1128 wrote to memory of 1640	1128	WaterMark.exe	31
PID 1640 wrote to memory of 260	1640	svchost.exe	7
PID 1640 wrote to memory of 260	1640	svchost.exe	7
PID 1640 wrote to memory of 260	1640	svchost.exe	7
PID 1640 wrote to memory of 260	1640	svchost.exe	7
PID 1640 wrote to memory of 260	1640	svchost.exe	7
PID 1640 wrote to memory of 332	1640	svchost.exe	6
PID 1640 wrote to memory of 332	1640	svchost.exe	6
PID 1640 wrote to memory of 332	1640	svchost.exe	6
PID 1640 wrote to memory of 332	1640	svchost.exe	6
PID 1640 wrote to memory of 332	1640	svchost.exe	6
PID 1640 wrote to memory of 368	1640	svchost.exe	5
PID 1640 wrote to memory of 368	1640	svchost.exe	5
PID 1640 wrote to memory of 368	1640	svchost.exe	5
PID 1640 wrote to memory of 368	1640	svchost.exe	5
PID 1640 wrote to memory of 368	1640	svchost.exe	5
PID 1640 wrote to memory of 376	1640	svchost.exe	4
PID 1640 wrote to memory of 376	1640	svchost.exe	4
PID 1640 wrote to memory of 376	1640	svchost.exe	4
PID 1640 wrote to memory of 376	1640	svchost.exe	4
PID 1640 wrote to memory of 376	1640	svchost.exe	4
PID 1640 wrote to memory of 416	1640	svchost.exe	3
PID 1640 wrote to memory of 416	1640	svchost.exe	3
PID 1640 wrote to memory of 416	1640	svchost.exe	3
PID 1640 wrote to memory of 416	1640	svchost.exe	3
PID 1640 wrote to memory of 416	1640	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:460
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:872
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:300
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1256
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1756
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1812
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1036
- 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 LocalService
  2⤵
  PID:832
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:804
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
  2⤵
  PID:732
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:664
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:584

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\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1412
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\6f852393f04fc33bc333c65f4e48721323675d8781b253f31e8dfb3bcf8248ae.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1584
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\6f852393f04fc33bc333c65f4e48721323675d8781b253f31e8dfb3bcf8248ae.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1172
  - - C:\Windows\SysWOW64\rundll32Srv.exe
      C:\Windows\SysWOW64\rundll32Srv.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Drops file in Program Files directory
      Suspicious use of WriteProcessMemory
      PID:1948
    - - 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:1128
      - 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
        Suspicious use of AdjustPrivilegeToken
        
        PID:1108
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1640
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 228
      4⤵
      Program crash
      Suspicious use of AdjustPrivilegeToken
      PID:1940

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1340

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
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

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

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

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

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

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

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

Download Submit
\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

Download Submit
\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
91b07c6f70654a26ca1cd8cde6fb2a7e

SHA1
789629859ed76191432fd7ab40cfa0487b580a6e

SHA256
37417b870c644d70c09c773b828dbb451e33d4e74df2f66d9698ae090d240d15

SHA512
077b62709e40c66304429acae5cccb953affa59791f2139d0b0e3e8a4610d38aa5dd6a44d9c857220245a9e746fb980a5dd0966d8b2795313ca7b6deeafd1dd2

Download Submit
memory/1108-82-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/1108-77-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/1108-73-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/1128-81-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1128-70-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1128-207-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1172-208-0x0000000010000000-0x0000000010078000-memory.dmp

Filesize
480KB

Download
memory/1172-69-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1172-139-0x0000000020020000-0x000000002002B000-memory.dmp

Filesize
44KB

Download
memory/1172-58-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1172-57-0x0000000010000000-0x0000000010078000-memory.dmp

Filesize
480KB

Download
memory/1172-55-0x0000000074BB1000-0x0000000074BB3000-memory.dmp

Filesize
8KB

Download
memory/1640-87-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1640-84-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1948-68-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download