ramnit | ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d

Analysis

max time kernel
187s
max time network
155s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
03/12/2022, 12:07

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General

Target

ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d.exe
Size

121KB
MD5

dde3eadc52b0b9d94334342185bc0802
SHA1

344281d825f4b94779c278def024eef72a6d9657
SHA256

ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d
SHA512

4ac85fda88c517c9a974e57f675e7153cee143878d6cc75ec370f21cd26bac60f953c326d594e902cfca5f481c7a0ee9ce714034d07a6c871126e76faa78b132
SSDEEP

768:9QxkwiHBsIqHpcrkMEYEhA7P4RhAtmaZFb79U9MKAjBEig6/1k21m3uHRdMNDj2f:98kwitTEhU4HDa1KkjWXUa21mc/Mue9G

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
460	WaterMark.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/268-57-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/460-65-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/460-182-0x0000000000400000-0x0000000000426000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
268	ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d.exe
268	ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\dmlconf.dat	svchost.exe
File created	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\pxAAB2.tmp	ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d.exe
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 (x86)\Microsoft\WaterMark.exe	svchost.exe
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

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
460	WaterMark.exe
460	WaterMark.exe
460	WaterMark.exe
460	WaterMark.exe
460	WaterMark.exe
460	WaterMark.exe
460	WaterMark.exe
460	WaterMark.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe
1856	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	460	WaterMark.exe
Token: SeDebugPrivilege	1856	svchost.exe
Token: SeDebugPrivilege	460	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 268 wrote to memory of 460	268	ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d.exe	28
PID 268 wrote to memory of 460	268	ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d.exe	28
PID 268 wrote to memory of 460	268	ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d.exe	28
PID 268 wrote to memory of 460	268	ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d.exe	28
PID 460 wrote to memory of 584	460	WaterMark.exe	29
PID 460 wrote to memory of 584	460	WaterMark.exe	29
PID 460 wrote to memory of 584	460	WaterMark.exe	29
PID 460 wrote to memory of 584	460	WaterMark.exe	29
PID 460 wrote to memory of 584	460	WaterMark.exe	29
PID 460 wrote to memory of 584	460	WaterMark.exe	29
PID 460 wrote to memory of 584	460	WaterMark.exe	29
PID 460 wrote to memory of 584	460	WaterMark.exe	29
PID 460 wrote to memory of 584	460	WaterMark.exe	29
PID 460 wrote to memory of 584	460	WaterMark.exe	29
PID 460 wrote to memory of 1856	460	WaterMark.exe	30
PID 460 wrote to memory of 1856	460	WaterMark.exe	30
PID 460 wrote to memory of 1856	460	WaterMark.exe	30
PID 460 wrote to memory of 1856	460	WaterMark.exe	30
PID 460 wrote to memory of 1856	460	WaterMark.exe	30
PID 460 wrote to memory of 1856	460	WaterMark.exe	30
PID 460 wrote to memory of 1856	460	WaterMark.exe	30
PID 460 wrote to memory of 1856	460	WaterMark.exe	30
PID 460 wrote to memory of 1856	460	WaterMark.exe	30
PID 460 wrote to memory of 1856	460	WaterMark.exe	30
PID 1856 wrote to memory of 260	1856	svchost.exe	7
PID 1856 wrote to memory of 260	1856	svchost.exe	7
PID 1856 wrote to memory of 260	1856	svchost.exe	7
PID 1856 wrote to memory of 260	1856	svchost.exe	7
PID 1856 wrote to memory of 260	1856	svchost.exe	7
PID 1856 wrote to memory of 332	1856	svchost.exe	6
PID 1856 wrote to memory of 332	1856	svchost.exe	6
PID 1856 wrote to memory of 332	1856	svchost.exe	6
PID 1856 wrote to memory of 332	1856	svchost.exe	6
PID 1856 wrote to memory of 332	1856	svchost.exe	6
PID 1856 wrote to memory of 368	1856	svchost.exe	5
PID 1856 wrote to memory of 368	1856	svchost.exe	5
PID 1856 wrote to memory of 368	1856	svchost.exe	5
PID 1856 wrote to memory of 368	1856	svchost.exe	5
PID 1856 wrote to memory of 368	1856	svchost.exe	5
PID 1856 wrote to memory of 380	1856	svchost.exe	4
PID 1856 wrote to memory of 380	1856	svchost.exe	4
PID 1856 wrote to memory of 380	1856	svchost.exe	4
PID 1856 wrote to memory of 380	1856	svchost.exe	4
PID 1856 wrote to memory of 380	1856	svchost.exe	4
PID 1856 wrote to memory of 416	1856	svchost.exe	3
PID 1856 wrote to memory of 416	1856	svchost.exe	3
PID 1856 wrote to memory of 416	1856	svchost.exe	3
PID 1856 wrote to memory of 416	1856	svchost.exe	3
PID 1856 wrote to memory of 416	1856	svchost.exe	3
PID 1856 wrote to memory of 464	1856	svchost.exe	2
PID 1856 wrote to memory of 464	1856	svchost.exe	2
PID 1856 wrote to memory of 464	1856	svchost.exe	2
PID 1856 wrote to memory of 464	1856	svchost.exe	2
PID 1856 wrote to memory of 464	1856	svchost.exe	2
PID 1856 wrote to memory of 472	1856	svchost.exe	1
PID 1856 wrote to memory of 472	1856	svchost.exe	1
PID 1856 wrote to memory of 472	1856	svchost.exe	1
PID 1856 wrote to memory of 472	1856	svchost.exe	1
PID 1856 wrote to memory of 472	1856	svchost.exe	1
PID 1856 wrote to memory of 480	1856	svchost.exe	8
PID 1856 wrote to memory of 480	1856	svchost.exe	8
PID 1856 wrote to memory of 480	1856	svchost.exe	8
PID 1856 wrote to memory of 480	1856	svchost.exe	8
PID 1856 wrote to memory of 480	1856	svchost.exe	8

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\svchost.exe
  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
  2⤵
  PID:804
- - C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    3⤵
    PID:1184
- 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:596
- - C:\Windows\system32\wbem\wmiprvse.exe
    C:\Windows\system32\wbem\wmiprvse.exe
    3⤵
    PID:1176
- 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 netsvcs
  2⤵
  PID:868
- - \\?\C:\Windows\system32\wbem\WMIADAP.EXE
    wmiadap.exe /F /T /R
    3⤵
    PID:1988
- 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:324
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k NetworkService
  2⤵
  PID:284
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1120
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1076
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1648

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\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1264
- C:\Users\Admin\AppData\Local\Temp\ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d.exe
  "C:\Users\Admin\AppData\Local\Temp\ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:268
- - 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 WriteProcessMemory
    PID:460
  - - 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:584
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1856

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
121KB

MD5
dde3eadc52b0b9d94334342185bc0802

SHA1
344281d825f4b94779c278def024eef72a6d9657

SHA256
ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d

SHA512
4ac85fda88c517c9a974e57f675e7153cee143878d6cc75ec370f21cd26bac60f953c326d594e902cfca5f481c7a0ee9ce714034d07a6c871126e76faa78b132

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

Filesize
121KB

MD5
dde3eadc52b0b9d94334342185bc0802

SHA1
344281d825f4b94779c278def024eef72a6d9657

SHA256
ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d

SHA512
4ac85fda88c517c9a974e57f675e7153cee143878d6cc75ec370f21cd26bac60f953c326d594e902cfca5f481c7a0ee9ce714034d07a6c871126e76faa78b132

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

Filesize
121KB

MD5
dde3eadc52b0b9d94334342185bc0802

SHA1
344281d825f4b94779c278def024eef72a6d9657

SHA256
ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d

SHA512
4ac85fda88c517c9a974e57f675e7153cee143878d6cc75ec370f21cd26bac60f953c326d594e902cfca5f481c7a0ee9ce714034d07a6c871126e76faa78b132

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

Filesize
121KB

MD5
dde3eadc52b0b9d94334342185bc0802

SHA1
344281d825f4b94779c278def024eef72a6d9657

SHA256
ddec3bbfcef0f8f9d618900ee6a516a603f4b04a11f3278ed9fc6422f1aa831d

SHA512
4ac85fda88c517c9a974e57f675e7153cee143878d6cc75ec370f21cd26bac60f953c326d594e902cfca5f481c7a0ee9ce714034d07a6c871126e76faa78b132

Download Submit
memory/268-60-0x0000000000220000-0x0000000000246000-memory.dmp

Filesize
152KB

Download
memory/268-57-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/460-130-0x0000000020021000-0x0000000020028000-memory.dmp

Filesize
28KB

Download
memory/460-182-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/460-65-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/584-67-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/584-71-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/584-66-0x0000000075F01000-0x0000000075F03000-memory.dmp

Filesize
8KB

Download
memory/584-62-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/584-183-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1856-73-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1856-76-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download