Analysis

  • max time kernel
    117s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    10-05-2024 01:17

General

  • Target

    3b746894d0a71f6162d96d2af36bea8d794d7e23af44c5536fcf97d416510a6e.exe

  • Size

    718KB

  • MD5

    f49a18388f070afc8f7a17f6053666ba

  • SHA1

    d1062e2c38badf9aac1a2c2d0bf4ea7f3e07341b

  • SHA256

    3b746894d0a71f6162d96d2af36bea8d794d7e23af44c5536fcf97d416510a6e

  • SHA512

    6557e22c3e5542262cb8d9ae6c1a79a17f8ce2b9666dfab3ea2df5acd8c23bda607358569b75454cb49a3d36448c08a1a671923f27c13b2473d5925842a7cd34

  • SSDEEP

    12288:Me0ReLAfP7wD6ZtqzvBzmAqdse00yzr+zdW4WgxUHPp8RGHwAOovhbuigPc20mk1:Me+537wDAtqFmAq500yuZWfK8QrQh

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ht3d

Decoy

derlon.net

46gem.vip

bridal-heart-boutique.com

porarquitectura.com

durkal.online

9916k.vip

nativegarden.net

hoodjac.com

coachwunder.com

jutuowangluo.com

frankmontagna.com

jalenx.com

yhxg.net

brasserie-bro.com

whitecoatprivilege.com

sigmadriving.com

inhkipcmacau.com

freediveexperience.com

52iwin.com

aaditt.com

Signatures

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • Detects executables packed with SmartAssembly 1 IoCs
  • Formbook payload 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3b746894d0a71f6162d96d2af36bea8d794d7e23af44c5536fcf97d416510a6e.exe
    "C:\Users\Admin\AppData\Local\Temp\3b746894d0a71f6162d96d2af36bea8d794d7e23af44c5536fcf97d416510a6e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3024
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\zNukUlepyAI.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2540
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zNukUlepyAI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp99CF.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2420
    • C:\Users\Admin\AppData\Local\Temp\3b746894d0a71f6162d96d2af36bea8d794d7e23af44c5536fcf97d416510a6e.exe
      "C:\Users\Admin\AppData\Local\Temp\3b746894d0a71f6162d96d2af36bea8d794d7e23af44c5536fcf97d416510a6e.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:2548

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp99CF.tmp

    Filesize

    1KB

    MD5

    1759d1acd994438c79f3d66d26f54ef1

    SHA1

    b9aaf2de40506b844b41af8c722dbedbea5e63f4

    SHA256

    f2b7ed167b5fc9b44212a79f186d6dc87ec9364c0bf10d3261b17ee797dd13ce

    SHA512

    fbe8cde13e3beac88086c5d3c0e5a540a71c8caade366ec2c32e4ef8506c7b0679ba718708ee0e50a9e6987c0aab104645a6bd8f367d4fb229dde0e0e6655044

  • memory/2548-14-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/2548-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2548-17-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/2548-12-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/3024-0-0x000000007494E000-0x000000007494F000-memory.dmp

    Filesize

    4KB

  • memory/3024-6-0x00000000078D0000-0x0000000007946000-memory.dmp

    Filesize

    472KB

  • memory/3024-5-0x0000000000740000-0x0000000000756000-memory.dmp

    Filesize

    88KB

  • memory/3024-4-0x00000000006E0000-0x00000000006F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-3-0x00000000006C0000-0x00000000006DE000-memory.dmp

    Filesize

    120KB

  • memory/3024-1-0x0000000000E00000-0x0000000000EBA000-memory.dmp

    Filesize

    744KB

  • memory/3024-2-0x0000000074940000-0x000000007502E000-memory.dmp

    Filesize

    6.9MB

  • memory/3024-18-0x0000000074940000-0x000000007502E000-memory.dmp

    Filesize

    6.9MB