ramnit | 48128a65eb69afd7deb8d434984276edc20723849ef9dcfcd1bf7cb1bd2123f4

Analysis

max time kernel
151s
max time network
144s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04-12-2022 02:23

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General

Target

48128a65eb69afd7deb8d434984276edc20723849ef9dcfcd1bf7cb1bd2123f4.dll
Size

472KB
MD5

d966c9e15110a7800e1150f9680b5330
SHA1

2588c1c60e312470c8b2e787c40d95ec69a7e2ac
SHA256

48128a65eb69afd7deb8d434984276edc20723849ef9dcfcd1bf7cb1bd2123f4
SHA512

fdb3fd24169eba0df052450df4f12b6d17709f7f196fac1c87c574fe9d16491c879eed7556cccef811881ab8e801df6bbf1616c838b73456412d10ad23b77b8c
SSDEEP

12288:vehnaNPpSVZmNxRCwnwm3W3OHIIf5V4zS0IL+:veh0PpS6NxNnwYeOHXj420I

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
1704	rundll32Srv.exe
1236	WaterMark.exe

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00140000000054ab-56.dat	upx
behavioral1/files/0x00140000000054ab-57.dat	upx
behavioral1/files/0x00140000000054ab-59.dat	upx
behavioral1/files/0x00140000000054ab-61.dat	upx
behavioral1/files/0x000800000001267a-62.dat	upx
behavioral1/files/0x000800000001267a-63.dat	upx
behavioral1/files/0x000800000001267a-65.dat	upx
behavioral1/memory/1704-66-0x0000000000400000-0x000000000045A000-memory.dmp	upx
behavioral1/files/0x000800000001267a-67.dat	upx
behavioral1/memory/1236-77-0x0000000000400000-0x000000000045A000-memory.dmp	upx
behavioral1/memory/1236-213-0x0000000000400000-0x000000000045A000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1836	rundll32.exe
1836	rundll32.exe
1704	rundll32Srv.exe
1704	rundll32Srv.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32Srv.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 8 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\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\7-Zip\7z.exe	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px4D2.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	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	svchost.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1248	1836	WerFault.exe	28

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1236	WaterMark.exe
1236	WaterMark.exe
1236	WaterMark.exe
1236	WaterMark.exe
1236	WaterMark.exe
1236	WaterMark.exe
1236	WaterMark.exe
1236	WaterMark.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe
972	svchost.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1236	WaterMark.exe
Token: SeDebugPrivilege	972	svchost.exe
Token: SeDebugPrivilege	1836	rundll32.exe
Token: SeDebugPrivilege	1248	WerFault.exe
Token: SeDebugPrivilege	1236	WaterMark.exe
Token: SeDebugPrivilege	1324	svchost.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 1836	1760	rundll32.exe	28
PID 1760 wrote to memory of 1836	1760	rundll32.exe	28
PID 1760 wrote to memory of 1836	1760	rundll32.exe	28
PID 1760 wrote to memory of 1836	1760	rundll32.exe	28
PID 1760 wrote to memory of 1836	1760	rundll32.exe	28
PID 1760 wrote to memory of 1836	1760	rundll32.exe	28
PID 1760 wrote to memory of 1836	1760	rundll32.exe	28
PID 1836 wrote to memory of 1704	1836	rundll32.exe	29
PID 1836 wrote to memory of 1704	1836	rundll32.exe	29
PID 1836 wrote to memory of 1704	1836	rundll32.exe	29
PID 1836 wrote to memory of 1704	1836	rundll32.exe	29
PID 1836 wrote to memory of 1248	1836	rundll32.exe	30
PID 1836 wrote to memory of 1248	1836	rundll32.exe	30
PID 1836 wrote to memory of 1248	1836	rundll32.exe	30
PID 1836 wrote to memory of 1248	1836	rundll32.exe	30
PID 1704 wrote to memory of 1236	1704	rundll32Srv.exe	31
PID 1704 wrote to memory of 1236	1704	rundll32Srv.exe	31
PID 1704 wrote to memory of 1236	1704	rundll32Srv.exe	31
PID 1704 wrote to memory of 1236	1704	rundll32Srv.exe	31
PID 1236 wrote to memory of 1324	1236	WaterMark.exe	32
PID 1236 wrote to memory of 1324	1236	WaterMark.exe	32
PID 1236 wrote to memory of 1324	1236	WaterMark.exe	32
PID 1236 wrote to memory of 1324	1236	WaterMark.exe	32
PID 1236 wrote to memory of 1324	1236	WaterMark.exe	32
PID 1236 wrote to memory of 1324	1236	WaterMark.exe	32
PID 1236 wrote to memory of 1324	1236	WaterMark.exe	32
PID 1236 wrote to memory of 1324	1236	WaterMark.exe	32
PID 1236 wrote to memory of 1324	1236	WaterMark.exe	32
PID 1236 wrote to memory of 1324	1236	WaterMark.exe	32
PID 1236 wrote to memory of 972	1236	WaterMark.exe	33
PID 1236 wrote to memory of 972	1236	WaterMark.exe	33
PID 1236 wrote to memory of 972	1236	WaterMark.exe	33
PID 1236 wrote to memory of 972	1236	WaterMark.exe	33
PID 1236 wrote to memory of 972	1236	WaterMark.exe	33
PID 1236 wrote to memory of 972	1236	WaterMark.exe	33
PID 1236 wrote to memory of 972	1236	WaterMark.exe	33
PID 1236 wrote to memory of 972	1236	WaterMark.exe	33
PID 1236 wrote to memory of 972	1236	WaterMark.exe	33
PID 1236 wrote to memory of 972	1236	WaterMark.exe	33
PID 972 wrote to memory of 260	972	svchost.exe	7
PID 972 wrote to memory of 260	972	svchost.exe	7
PID 972 wrote to memory of 260	972	svchost.exe	7
PID 972 wrote to memory of 260	972	svchost.exe	7
PID 972 wrote to memory of 260	972	svchost.exe	7
PID 972 wrote to memory of 332	972	svchost.exe	6
PID 972 wrote to memory of 332	972	svchost.exe	6
PID 972 wrote to memory of 332	972	svchost.exe	6
PID 972 wrote to memory of 332	972	svchost.exe	6
PID 972 wrote to memory of 332	972	svchost.exe	6
PID 972 wrote to memory of 368	972	svchost.exe	5
PID 972 wrote to memory of 368	972	svchost.exe	5
PID 972 wrote to memory of 368	972	svchost.exe	5
PID 972 wrote to memory of 368	972	svchost.exe	5
PID 972 wrote to memory of 368	972	svchost.exe	5
PID 972 wrote to memory of 380	972	svchost.exe	4
PID 972 wrote to memory of 380	972	svchost.exe	4
PID 972 wrote to memory of 380	972	svchost.exe	4
PID 972 wrote to memory of 380	972	svchost.exe	4
PID 972 wrote to memory of 380	972	svchost.exe	4
PID 972 wrote to memory of 416	972	svchost.exe	3
PID 972 wrote to memory of 416	972	svchost.exe	3
PID 972 wrote to memory of 416	972	svchost.exe	3
PID 972 wrote to memory of 416	972	svchost.exe	3
PID 972 wrote to memory of 416	972	svchost.exe	3

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
PID:472

C:\Windows\system32\services.exe
C:\Windows\system32\services.exe
1⤵
PID:464
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1128
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1944
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1824
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1052
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:360
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:272
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:880
- 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 LocalSystemNetworkRestricted
  2⤵
  PID:804
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
  2⤵
  PID:760
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:672
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:596

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:380

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:368
- C:\Windows\system32\lsm.exe
  C:\Windows\system32\lsm.exe
  2⤵
  PID:480

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\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1200

C:\Windows\system32\wbem\wmiprvse.exe
C:\Windows\system32\wbem\wmiprvse.exe
1⤵
PID:1372

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1260
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\48128a65eb69afd7deb8d434984276edc20723849ef9dcfcd1bf7cb1bd2123f4.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1760
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\48128a65eb69afd7deb8d434984276edc20723849ef9dcfcd1bf7cb1bd2123f4.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1836
  - - 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:1704
    - - 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:1236
      - 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:1324
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:972
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1836 -s 228
      4⤵
      Program crash
      Suspicious use of AdjustPrivilegeToken
      PID:1248

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1192

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
90KB

MD5
8aff689b8331bb2ba1616cec80089f82

SHA1
250ba18e438d9ea4609e14b20005456543e87f73

SHA256
617a08229e17e16efb58f09341ce777c54d12aef79cf519398278cffdab86ed9

SHA512
76655f41a9cc57d0a2e22aeb140f1c658f3771fab3b32842e0bf16d20c891703a4505c9a6ad5445e80253835653a6bb67f5486af280aa29baa54929b73a45451

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

Filesize
90KB

MD5
8aff689b8331bb2ba1616cec80089f82

SHA1
250ba18e438d9ea4609e14b20005456543e87f73

SHA256
617a08229e17e16efb58f09341ce777c54d12aef79cf519398278cffdab86ed9

SHA512
76655f41a9cc57d0a2e22aeb140f1c658f3771fab3b32842e0bf16d20c891703a4505c9a6ad5445e80253835653a6bb67f5486af280aa29baa54929b73a45451

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

Filesize
90KB

MD5
8aff689b8331bb2ba1616cec80089f82

SHA1
250ba18e438d9ea4609e14b20005456543e87f73

SHA256
617a08229e17e16efb58f09341ce777c54d12aef79cf519398278cffdab86ed9

SHA512
76655f41a9cc57d0a2e22aeb140f1c658f3771fab3b32842e0bf16d20c891703a4505c9a6ad5445e80253835653a6bb67f5486af280aa29baa54929b73a45451

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

Filesize
90KB

MD5
8aff689b8331bb2ba1616cec80089f82

SHA1
250ba18e438d9ea4609e14b20005456543e87f73

SHA256
617a08229e17e16efb58f09341ce777c54d12aef79cf519398278cffdab86ed9

SHA512
76655f41a9cc57d0a2e22aeb140f1c658f3771fab3b32842e0bf16d20c891703a4505c9a6ad5445e80253835653a6bb67f5486af280aa29baa54929b73a45451

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

Filesize
90KB

MD5
8aff689b8331bb2ba1616cec80089f82

SHA1
250ba18e438d9ea4609e14b20005456543e87f73

SHA256
617a08229e17e16efb58f09341ce777c54d12aef79cf519398278cffdab86ed9

SHA512
76655f41a9cc57d0a2e22aeb140f1c658f3771fab3b32842e0bf16d20c891703a4505c9a6ad5445e80253835653a6bb67f5486af280aa29baa54929b73a45451

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

Filesize
90KB

MD5
8aff689b8331bb2ba1616cec80089f82

SHA1
250ba18e438d9ea4609e14b20005456543e87f73

SHA256
617a08229e17e16efb58f09341ce777c54d12aef79cf519398278cffdab86ed9

SHA512
76655f41a9cc57d0a2e22aeb140f1c658f3771fab3b32842e0bf16d20c891703a4505c9a6ad5445e80253835653a6bb67f5486af280aa29baa54929b73a45451

Download Submit
\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
8aff689b8331bb2ba1616cec80089f82

SHA1
250ba18e438d9ea4609e14b20005456543e87f73

SHA256
617a08229e17e16efb58f09341ce777c54d12aef79cf519398278cffdab86ed9

SHA512
76655f41a9cc57d0a2e22aeb140f1c658f3771fab3b32842e0bf16d20c891703a4505c9a6ad5445e80253835653a6bb67f5486af280aa29baa54929b73a45451

Download Submit
\Windows\SysWOW64\rundll32Srv.exe

Filesize
90KB

MD5
8aff689b8331bb2ba1616cec80089f82

SHA1
250ba18e438d9ea4609e14b20005456543e87f73

SHA256
617a08229e17e16efb58f09341ce777c54d12aef79cf519398278cffdab86ed9

SHA512
76655f41a9cc57d0a2e22aeb140f1c658f3771fab3b32842e0bf16d20c891703a4505c9a6ad5445e80253835653a6bb67f5486af280aa29baa54929b73a45451

Download Submit
memory/972-85-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/972-82-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/972-84-0x0000000000000000-mapping.dmp

Download
memory/1236-64-0x0000000000000000-mapping.dmp

Download
memory/1236-77-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1236-213-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1248-60-0x0000000000000000-mapping.dmp

Download
memory/1324-71-0x0000000000000000-mapping.dmp

Download
memory/1324-69-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/1324-74-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/1324-80-0x0000000020010000-0x0000000020021000-memory.dmp

Filesize
68KB

Download
memory/1704-66-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1704-58-0x0000000000000000-mapping.dmp

Download
memory/1836-72-0x0000000010000000-0x0000000010078000-memory.dmp

Filesize
480KB

Download
memory/1836-75-0x0000000000330000-0x000000000038A000-memory.dmp

Filesize
360KB

Download
memory/1836-54-0x0000000000000000-mapping.dmp

Download
memory/1836-55-0x0000000075C51000-0x0000000075C53000-memory.dmp

Filesize
8KB

Download
memory/1836-214-0x0000000010000000-0x0000000010078000-memory.dmp

Filesize
480KB

Download