ramnit | 3e6b944c23f16c2f1f03fe359161d84a76ef2b67d261fc86020264ebfbaee3a1

Analysis

max time kernel
152s
max time network
128s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
30/10/2022, 23:15

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General

Target

3e6b944c23f16c2f1f03fe359161d84a76ef2b67d261fc86020264ebfbaee3a1.dll
Size

833KB
MD5

a0ec4edac97de4bcb3f71870e077bfa0
SHA1

9bb9c0e724ecfd99236fd94e503a5fc86619521e
SHA256

3e6b944c23f16c2f1f03fe359161d84a76ef2b67d261fc86020264ebfbaee3a1
SHA512

8fed05ecfe244e63607ae2c51a51448ac5bb1ce50c61867b985a8860edb05cb74071358e72507890464c99b6f815865b7e63b92d5666fb49065ade9cc98a23d4
SSDEEP

24576:Ezb1MlCKUQyUmjtczu6Prs9pgWoopooK9kwPkNhr:EzbKsUmjtcdPGgIwPkNhr

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
984	rundll32mgr.exe
768	WaterMark.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/984-63-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/984-62-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/984-70-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/768-76-0x0000000000400000-0x000000000043F000-memory.dmp	upx
behavioral1/memory/768-88-0x0000000000400000-0x000000000043F000-memory.dmp	upx
behavioral1/memory/768-204-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1388	rundll32.exe
1388	rundll32.exe
984	rundll32mgr.exe
984	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 10 IoCs

description	ioc	Process
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
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 opened for modification	C:\Program Files (x86)\Microsoft\px194C.tmp	rundll32mgr.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files\7-Zip\7zG.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

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
768	WaterMark.exe
768	WaterMark.exe
768	WaterMark.exe
768	WaterMark.exe
768	WaterMark.exe
768	WaterMark.exe
768	WaterMark.exe
768	WaterMark.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe
2040	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	768	WaterMark.exe
Token: SeDebugPrivilege	2040	svchost.exe
Token: SeDebugPrivilege	1388	rundll32.exe
Token: SeDebugPrivilege	768	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
984	rundll32mgr.exe
768	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 1388	2028	rundll32.exe	27
PID 2028 wrote to memory of 1388	2028	rundll32.exe	27
PID 2028 wrote to memory of 1388	2028	rundll32.exe	27
PID 2028 wrote to memory of 1388	2028	rundll32.exe	27
PID 2028 wrote to memory of 1388	2028	rundll32.exe	27
PID 2028 wrote to memory of 1388	2028	rundll32.exe	27
PID 2028 wrote to memory of 1388	2028	rundll32.exe	27
PID 1388 wrote to memory of 984	1388	rundll32.exe	28
PID 1388 wrote to memory of 984	1388	rundll32.exe	28
PID 1388 wrote to memory of 984	1388	rundll32.exe	28
PID 1388 wrote to memory of 984	1388	rundll32.exe	28
PID 984 wrote to memory of 768	984	rundll32mgr.exe	29
PID 984 wrote to memory of 768	984	rundll32mgr.exe	29
PID 984 wrote to memory of 768	984	rundll32mgr.exe	29
PID 984 wrote to memory of 768	984	rundll32mgr.exe	29
PID 768 wrote to memory of 520	768	WaterMark.exe	30
PID 768 wrote to memory of 520	768	WaterMark.exe	30
PID 768 wrote to memory of 520	768	WaterMark.exe	30
PID 768 wrote to memory of 520	768	WaterMark.exe	30
PID 768 wrote to memory of 520	768	WaterMark.exe	30
PID 768 wrote to memory of 520	768	WaterMark.exe	30
PID 768 wrote to memory of 520	768	WaterMark.exe	30
PID 768 wrote to memory of 520	768	WaterMark.exe	30
PID 768 wrote to memory of 520	768	WaterMark.exe	30
PID 768 wrote to memory of 520	768	WaterMark.exe	30
PID 768 wrote to memory of 2040	768	WaterMark.exe	31
PID 768 wrote to memory of 2040	768	WaterMark.exe	31
PID 768 wrote to memory of 2040	768	WaterMark.exe	31
PID 768 wrote to memory of 2040	768	WaterMark.exe	31
PID 768 wrote to memory of 2040	768	WaterMark.exe	31
PID 768 wrote to memory of 2040	768	WaterMark.exe	31
PID 768 wrote to memory of 2040	768	WaterMark.exe	31
PID 768 wrote to memory of 2040	768	WaterMark.exe	31
PID 768 wrote to memory of 2040	768	WaterMark.exe	31
PID 768 wrote to memory of 2040	768	WaterMark.exe	31
PID 2040 wrote to memory of 260	2040	svchost.exe	7
PID 2040 wrote to memory of 260	2040	svchost.exe	7
PID 2040 wrote to memory of 260	2040	svchost.exe	7
PID 2040 wrote to memory of 260	2040	svchost.exe	7
PID 2040 wrote to memory of 260	2040	svchost.exe	7
PID 2040 wrote to memory of 332	2040	svchost.exe	6
PID 2040 wrote to memory of 332	2040	svchost.exe	6
PID 2040 wrote to memory of 332	2040	svchost.exe	6
PID 2040 wrote to memory of 332	2040	svchost.exe	6
PID 2040 wrote to memory of 332	2040	svchost.exe	6
PID 2040 wrote to memory of 368	2040	svchost.exe	5
PID 2040 wrote to memory of 368	2040	svchost.exe	5
PID 2040 wrote to memory of 368	2040	svchost.exe	5
PID 2040 wrote to memory of 368	2040	svchost.exe	5
PID 2040 wrote to memory of 368	2040	svchost.exe	5
PID 2040 wrote to memory of 380	2040	svchost.exe	4
PID 2040 wrote to memory of 380	2040	svchost.exe	4
PID 2040 wrote to memory of 380	2040	svchost.exe	4
PID 2040 wrote to memory of 380	2040	svchost.exe	4
PID 2040 wrote to memory of 380	2040	svchost.exe	4
PID 2040 wrote to memory of 416	2040	svchost.exe	3
PID 2040 wrote to memory of 416	2040	svchost.exe	3
PID 2040 wrote to memory of 416	2040	svchost.exe	3
PID 2040 wrote to memory of 416	2040	svchost.exe	3
PID 2040 wrote to memory of 416	2040	svchost.exe	3
PID 2040 wrote to memory of 460	2040	svchost.exe	2
PID 2040 wrote to memory of 460	2040	svchost.exe	2
PID 2040 wrote to memory of 460	2040	svchost.exe	2
PID 2040 wrote to memory of 460	2040	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:1604
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1264
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1752
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1676
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
  2⤵
  PID:1028
- C:\Windows\System32\spoolsv.exe
  C:\Windows\System32\spoolsv.exe
  2⤵
  PID:284
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:300
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalService
  2⤵
  PID:844
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:800
- C:\Windows\System32\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
  2⤵
  PID:756
- 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:592

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: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:1400
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3e6b944c23f16c2f1f03fe359161d84a76ef2b67d261fc86020264ebfbaee3a1.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2028
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\3e6b944c23f16c2f1f03fe359161d84a76ef2b67d261fc86020264ebfbaee3a1.dll,#1
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1388
  - - 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:984
    - - 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:768
      - 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:520
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:2040

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

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Downloads

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

Filesize
174KB

MD5
5215690ed8422d1f80902345d7646074

SHA1
7cdb270c9fecb2cbdaa7d130303bdb9cd03ff010

SHA256
2d95fb76a96547eccc00b0c3c025f0ed922c5c1a1611acb9a859e331a2117074

SHA512
914e88e16b1524c979c7cdfbd170b11928eeb473d347ddf77fd3c97182c954cfa21b359e6c9e15057f98f47bf72b0e7b5f1c9e52c3573d73df814c29fc288fac

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

Filesize
174KB

MD5
5215690ed8422d1f80902345d7646074

SHA1
7cdb270c9fecb2cbdaa7d130303bdb9cd03ff010

SHA256
2d95fb76a96547eccc00b0c3c025f0ed922c5c1a1611acb9a859e331a2117074

SHA512
914e88e16b1524c979c7cdfbd170b11928eeb473d347ddf77fd3c97182c954cfa21b359e6c9e15057f98f47bf72b0e7b5f1c9e52c3573d73df814c29fc288fac

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

Filesize
174KB

MD5
5215690ed8422d1f80902345d7646074

SHA1
7cdb270c9fecb2cbdaa7d130303bdb9cd03ff010

SHA256
2d95fb76a96547eccc00b0c3c025f0ed922c5c1a1611acb9a859e331a2117074

SHA512
914e88e16b1524c979c7cdfbd170b11928eeb473d347ddf77fd3c97182c954cfa21b359e6c9e15057f98f47bf72b0e7b5f1c9e52c3573d73df814c29fc288fac

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

Filesize
174KB

MD5
5215690ed8422d1f80902345d7646074

SHA1
7cdb270c9fecb2cbdaa7d130303bdb9cd03ff010

SHA256
2d95fb76a96547eccc00b0c3c025f0ed922c5c1a1611acb9a859e331a2117074

SHA512
914e88e16b1524c979c7cdfbd170b11928eeb473d347ddf77fd3c97182c954cfa21b359e6c9e15057f98f47bf72b0e7b5f1c9e52c3573d73df814c29fc288fac

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

Filesize
174KB

MD5
5215690ed8422d1f80902345d7646074

SHA1
7cdb270c9fecb2cbdaa7d130303bdb9cd03ff010

SHA256
2d95fb76a96547eccc00b0c3c025f0ed922c5c1a1611acb9a859e331a2117074

SHA512
914e88e16b1524c979c7cdfbd170b11928eeb473d347ddf77fd3c97182c954cfa21b359e6c9e15057f98f47bf72b0e7b5f1c9e52c3573d73df814c29fc288fac

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

Filesize
174KB

MD5
5215690ed8422d1f80902345d7646074

SHA1
7cdb270c9fecb2cbdaa7d130303bdb9cd03ff010

SHA256
2d95fb76a96547eccc00b0c3c025f0ed922c5c1a1611acb9a859e331a2117074

SHA512
914e88e16b1524c979c7cdfbd170b11928eeb473d347ddf77fd3c97182c954cfa21b359e6c9e15057f98f47bf72b0e7b5f1c9e52c3573d73df814c29fc288fac

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
174KB

MD5
5215690ed8422d1f80902345d7646074

SHA1
7cdb270c9fecb2cbdaa7d130303bdb9cd03ff010

SHA256
2d95fb76a96547eccc00b0c3c025f0ed922c5c1a1611acb9a859e331a2117074

SHA512
914e88e16b1524c979c7cdfbd170b11928eeb473d347ddf77fd3c97182c954cfa21b359e6c9e15057f98f47bf72b0e7b5f1c9e52c3573d73df814c29fc288fac

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
174KB

MD5
5215690ed8422d1f80902345d7646074

SHA1
7cdb270c9fecb2cbdaa7d130303bdb9cd03ff010

SHA256
2d95fb76a96547eccc00b0c3c025f0ed922c5c1a1611acb9a859e331a2117074

SHA512
914e88e16b1524c979c7cdfbd170b11928eeb473d347ddf77fd3c97182c954cfa21b359e6c9e15057f98f47bf72b0e7b5f1c9e52c3573d73df814c29fc288fac

Download Submit
memory/520-84-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/520-80-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/520-205-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/520-89-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/768-76-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/768-204-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/768-88-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/984-63-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/984-62-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/984-70-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1388-55-0x00000000759F1000-0x00000000759F3000-memory.dmp

Filesize
8KB

Download
memory/1388-74-0x00000000003B0000-0x00000000003EF000-memory.dmp

Filesize
252KB

Download
memory/1388-71-0x00000000003B0000-0x00000000003EF000-memory.dmp

Filesize
252KB

Download
memory/1388-68-0x0000000005000000-0x00000000050D6000-memory.dmp

Filesize
856KB

Download
memory/2040-91-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/2040-94-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download