Resubmissions

28/03/2025, 01:18

250328-bn2gcszyfy 10

21/02/2022, 14:26

220221-rrw9taaed3 10

Analysis

  • max time kernel
    148s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    28/03/2025, 01:18

General

  • Target

    _BUSAN_HOCHIMINH_FEB.25.exe

  • Size

    738KB

  • MD5

    08b4042d2a89ebcff8537ba458295e48

  • SHA1

    91e3fd4718786c523620c31465232113580ea477

  • SHA256

    388292015e4c2d075b935a8299d99335d957e3ad5134a33f28c4dc7f5e3687c5

  • SHA512

    5be0e94d68f8d0599c9323bb4c03635a0e000ff541b9924f6b83eba8adeda55c9528c818093f690249f51cd1976389c77d841e7f373fb1b5d362ba57ea36a222

  • SSDEEP

    12288:dwRl4Zby0chFFQWNd9M/VqnM2GQkTtZrD1fNABd0ioEXZm33h:elIbHchFv6/6TGQk7Ly0aJs

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

a04s

Decoy

lovelyveganfoods.com

wahidi.net

hwcstl.com

psnews.today

depress-elastic.com

r3mixlogistics.com

crimeawartoken.com

changethewayyouseegreen.com

mfa-azubi.com

maximizeprofit.store

alternativesclimat.net

turkcellsuperonline.xyz

extractword.com

radiotec-solutions.com

flawlesscity.com

schatzbenifits.com

gymzf.xyz

runpa.site

cryptocdes.biz

harryhoppe.com

Signatures

  • Formbook

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

  • Formbook family
  • Formbook payload 3 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.

  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 32 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 16 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of UnmapMainImage 4 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1196
    • C:\Users\Admin\AppData\Local\Temp\_BUSAN_HOCHIMINH_FEB.25.exe
      "C:\Users\Admin\AppData\Local\Temp\_BUSAN_HOCHIMINH_FEB.25.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1780
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YtGUemuxgzC.exe"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2824
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YtGUemuxgzC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2961.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2276
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:2768
    • C:\Windows\SysWOW64\wuapp.exe
      "C:\Windows\SysWOW64\wuapp.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2608
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2640
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      2⤵
        PID:904
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x2d8
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1912

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\1033\StructuredQuerySchema.bin

      Filesize

      292KB

      MD5

      ae71383c3cbc5a7c64ee793a5779015b

      SHA1

      1cabfd5c590a76fe86af0c042b4d9a6e1546cf78

      SHA256

      29bbdf534e97add374f41c9a2e5a1a34952b8eac501f1a8828f5999e7e0d79f7

      SHA512

      f7703b0e5b67e2c3bbba42efe912eda68c90d7fe4425c7d2f20f02f2d6e659f71870286055eb87095a0861e4ba04a9fbf72bfb328bda10aadafe2880fd06e51d

    • C:\Users\Admin\AppData\Local\Temp\tmp2961.tmp

      Filesize

      1KB

      MD5

      bfd1c64b92315790993de5f33041e7ee

      SHA1

      4b899514a88627101e411c86bb4176d96c4c8001

      SHA256

      96e9da155bd1561a02125cb60c228170da7089beaf0eb3044e3865223e7035d3

      SHA512

      131aa07e9dffcdf9bd4015f195a74d6b57c8b04f0616ec96adf063371c19e2d25eecf7d8327efa8380c7d28214af06e585bd5e6496fc9b7808a6936cf509ce7d

    • memory/1196-25-0x000007FFFFFD5000-0x000007FFFFFD6000-memory.dmp

      Filesize

      4KB

    • memory/1196-28-0x0000000003170000-0x0000000003270000-memory.dmp

      Filesize

      1024KB

    • memory/1196-30-0x000000000B9F0000-0x000000000BB6A000-memory.dmp

      Filesize

      1.5MB

    • memory/1780-4-0x000000007477E000-0x000000007477F000-memory.dmp

      Filesize

      4KB

    • memory/1780-6-0x0000000005600000-0x00000000056B4000-memory.dmp

      Filesize

      720KB

    • memory/1780-5-0x0000000074770000-0x0000000074E5E000-memory.dmp

      Filesize

      6.9MB

    • memory/1780-14-0x0000000004E10000-0x0000000004E44000-memory.dmp

      Filesize

      208KB

    • memory/1780-3-0x0000000000320000-0x000000000032E000-memory.dmp

      Filesize

      56KB

    • memory/1780-0-0x000000007477E000-0x000000007477F000-memory.dmp

      Filesize

      4KB

    • memory/1780-1-0x0000000000DD0000-0x0000000000E8E000-memory.dmp

      Filesize

      760KB

    • memory/1780-22-0x0000000074770000-0x0000000074E5E000-memory.dmp

      Filesize

      6.9MB

    • memory/1780-2-0x0000000074770000-0x0000000074E5E000-memory.dmp

      Filesize

      6.9MB

    • memory/2608-26-0x0000000001270000-0x000000000127B000-memory.dmp

      Filesize

      44KB

    • memory/2608-27-0x00000000000D0000-0x00000000000FF000-memory.dmp

      Filesize

      188KB

    • memory/2768-19-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

      Filesize

      4KB

    • memory/2768-24-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/2768-15-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/2768-17-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/2768-20-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB