ramnit | a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd

Analysis

max time kernel
150s
max time network
121s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
06/11/2022, 07:51

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General

Target

a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd.exe
Size

112KB
MD5

1316fa6109bf8bcd8339c4454a38248a
SHA1

9463f53b89ad96d6dea76daa7e57c1ce2ee9622f
SHA256

a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd
SHA512

0b91370d6fd6bddda70e10f22ee448f1e392b075d6da78e22d742acb8663b25dd2ffb92ee8bf95d73fe1c5ee7cd30a7718a593c8157c4ac0d7d75393ac4c8e6a
SSDEEP

1536:BVZnxm6MG9xgfrvEaoiT/GyphjXDYjKwttoswRmhApE:RnxwgxgfR/DVG7wBpE

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
2028	WaterMark.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1724-57-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1724-56-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/1724-62-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral1/memory/2028-77-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral1/memory/2028-78-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral1/memory/2028-186-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1724	a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd.exe
1724	a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
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\7-Zip\7zFM.exe	svchost.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px713.tmp	a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd.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\7z.exe	svchost.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\7zG.exe	svchost.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
2028	WaterMark.exe
2028	WaterMark.exe
2028	WaterMark.exe
2028	WaterMark.exe
2028	WaterMark.exe
2028	WaterMark.exe
2028	WaterMark.exe
2028	WaterMark.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe
1428	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2028	WaterMark.exe
Token: SeDebugPrivilege	1428	svchost.exe
Token: SeDebugPrivilege	2028	WaterMark.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1724	a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd.exe
2028	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 2028	1724	a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd.exe	27
PID 1724 wrote to memory of 2028	1724	a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd.exe	27
PID 1724 wrote to memory of 2028	1724	a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd.exe	27
PID 1724 wrote to memory of 2028	1724	a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd.exe	27
PID 2028 wrote to memory of 756	2028	WaterMark.exe	28
PID 2028 wrote to memory of 756	2028	WaterMark.exe	28
PID 2028 wrote to memory of 756	2028	WaterMark.exe	28
PID 2028 wrote to memory of 756	2028	WaterMark.exe	28
PID 2028 wrote to memory of 756	2028	WaterMark.exe	28
PID 2028 wrote to memory of 756	2028	WaterMark.exe	28
PID 2028 wrote to memory of 756	2028	WaterMark.exe	28
PID 2028 wrote to memory of 756	2028	WaterMark.exe	28
PID 2028 wrote to memory of 756	2028	WaterMark.exe	28
PID 2028 wrote to memory of 756	2028	WaterMark.exe	28
PID 2028 wrote to memory of 1428	2028	WaterMark.exe	29
PID 2028 wrote to memory of 1428	2028	WaterMark.exe	29
PID 2028 wrote to memory of 1428	2028	WaterMark.exe	29
PID 2028 wrote to memory of 1428	2028	WaterMark.exe	29
PID 2028 wrote to memory of 1428	2028	WaterMark.exe	29
PID 2028 wrote to memory of 1428	2028	WaterMark.exe	29
PID 2028 wrote to memory of 1428	2028	WaterMark.exe	29
PID 2028 wrote to memory of 1428	2028	WaterMark.exe	29
PID 2028 wrote to memory of 1428	2028	WaterMark.exe	29
PID 2028 wrote to memory of 1428	2028	WaterMark.exe	29
PID 1428 wrote to memory of 260	1428	svchost.exe	7
PID 1428 wrote to memory of 260	1428	svchost.exe	7
PID 1428 wrote to memory of 260	1428	svchost.exe	7
PID 1428 wrote to memory of 260	1428	svchost.exe	7
PID 1428 wrote to memory of 260	1428	svchost.exe	7
PID 1428 wrote to memory of 332	1428	svchost.exe	6
PID 1428 wrote to memory of 332	1428	svchost.exe	6
PID 1428 wrote to memory of 332	1428	svchost.exe	6
PID 1428 wrote to memory of 332	1428	svchost.exe	6
PID 1428 wrote to memory of 332	1428	svchost.exe	6
PID 1428 wrote to memory of 372	1428	svchost.exe	5
PID 1428 wrote to memory of 372	1428	svchost.exe	5
PID 1428 wrote to memory of 372	1428	svchost.exe	5
PID 1428 wrote to memory of 372	1428	svchost.exe	5
PID 1428 wrote to memory of 372	1428	svchost.exe	5
PID 1428 wrote to memory of 380	1428	svchost.exe	4
PID 1428 wrote to memory of 380	1428	svchost.exe	4
PID 1428 wrote to memory of 380	1428	svchost.exe	4
PID 1428 wrote to memory of 380	1428	svchost.exe	4
PID 1428 wrote to memory of 380	1428	svchost.exe	4
PID 1428 wrote to memory of 408	1428	svchost.exe	3
PID 1428 wrote to memory of 408	1428	svchost.exe	3
PID 1428 wrote to memory of 408	1428	svchost.exe	3
PID 1428 wrote to memory of 408	1428	svchost.exe	3
PID 1428 wrote to memory of 408	1428	svchost.exe	3
PID 1428 wrote to memory of 472	1428	svchost.exe	2
PID 1428 wrote to memory of 472	1428	svchost.exe	2
PID 1428 wrote to memory of 472	1428	svchost.exe	2
PID 1428 wrote to memory of 472	1428	svchost.exe	2
PID 1428 wrote to memory of 472	1428	svchost.exe	2
PID 1428 wrote to memory of 480	1428	svchost.exe	1
PID 1428 wrote to memory of 480	1428	svchost.exe	1
PID 1428 wrote to memory of 480	1428	svchost.exe	1
PID 1428 wrote to memory of 480	1428	svchost.exe	1
PID 1428 wrote to memory of 480	1428	svchost.exe	1
PID 1428 wrote to memory of 488	1428	svchost.exe	8
PID 1428 wrote to memory of 488	1428	svchost.exe	8
PID 1428 wrote to memory of 488	1428	svchost.exe	8
PID 1428 wrote to memory of 488	1428	svchost.exe	8
PID 1428 wrote to memory of 488	1428	svchost.exe	8

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
PID:480

C:\Windows\system32\services.exe
C:\Windows\system32\services.exe
1⤵
PID:472
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  PID:864
- - \\?\C:\Windows\system32\wbem\WMIADAP.EXE
    wmiadap.exe /F /T /R
    3⤵
    PID:1612
- C:\Windows\system32\sppsvc.exe
  C:\Windows\system32\sppsvc.exe
  2⤵
  PID:1744
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
  2⤵
  PID:1576
- C:\Windows\system32\taskhost.exe
  "taskhost.exe"
  2⤵
  PID:1200
- 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:1012
- 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:836
- 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:744
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k RPCSS
  2⤵
  PID:660
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k DcomLaunch
  2⤵
  PID:576

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:408

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:380
- C:\Windows\system32\lsm.exe
  C:\Windows\system32\lsm.exe
  2⤵
  PID:488

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:372

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\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1308

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1348
- C:\Users\Admin\AppData\Local\Temp\a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd.exe
  "C:\Users\Admin\AppData\Local\Temp\a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:1724
- - 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 UnmapMainImage
    - Suspicious use of WriteProcessMemory
    PID:2028
  - - 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:756
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1428

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
112KB

MD5
1316fa6109bf8bcd8339c4454a38248a

SHA1
9463f53b89ad96d6dea76daa7e57c1ce2ee9622f

SHA256
a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd

SHA512
0b91370d6fd6bddda70e10f22ee448f1e392b075d6da78e22d742acb8663b25dd2ffb92ee8bf95d73fe1c5ee7cd30a7718a593c8157c4ac0d7d75393ac4c8e6a

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

Filesize
112KB

MD5
1316fa6109bf8bcd8339c4454a38248a

SHA1
9463f53b89ad96d6dea76daa7e57c1ce2ee9622f

SHA256
a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd

SHA512
0b91370d6fd6bddda70e10f22ee448f1e392b075d6da78e22d742acb8663b25dd2ffb92ee8bf95d73fe1c5ee7cd30a7718a593c8157c4ac0d7d75393ac4c8e6a

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

Filesize
112KB

MD5
1316fa6109bf8bcd8339c4454a38248a

SHA1
9463f53b89ad96d6dea76daa7e57c1ce2ee9622f

SHA256
a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd

SHA512
0b91370d6fd6bddda70e10f22ee448f1e392b075d6da78e22d742acb8663b25dd2ffb92ee8bf95d73fe1c5ee7cd30a7718a593c8157c4ac0d7d75393ac4c8e6a

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

Filesize
112KB

MD5
1316fa6109bf8bcd8339c4454a38248a

SHA1
9463f53b89ad96d6dea76daa7e57c1ce2ee9622f

SHA256
a7d3646fa55e0376d25098e9089f9adb5d393ace8af96699d8bcf1c34a08e9bd

SHA512
0b91370d6fd6bddda70e10f22ee448f1e392b075d6da78e22d742acb8663b25dd2ffb92ee8bf95d73fe1c5ee7cd30a7718a593c8157c4ac0d7d75393ac4c8e6a

Download Submit
memory/756-72-0x0000000074B51000-0x0000000074B53000-memory.dmp

Filesize
8KB

Download
memory/756-187-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/756-79-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/756-73-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/756-69-0x0000000020010000-0x0000000020022000-memory.dmp

Filesize
72KB

Download
memory/1428-81-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1428-84-0x0000000020010000-0x000000002001B000-memory.dmp

Filesize
44KB

Download
memory/1724-62-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1724-57-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1724-56-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2028-77-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/2028-78-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/2028-186-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download