Analysis

  • max time kernel
    155s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    11-10-2021 21:04

General

  • Target

    PO.exe

  • Size

    260KB

  • MD5

    dcc82f6d02352ba09401b5e5903fc2c9

  • SHA1

    1fc8ead283ee92f4f1c7b3638d6cb91a9a2a6a8e

  • SHA256

    c96178775d7f8dd8b06a4e59aad0367f36abc11680081acfcc2b446fb0ee28b1

  • SHA512

    714003eb53f9a2d3198dbcad9d666e2d5380415f3d5c4ba5f8129cfe585fd21453f6720995ca536151fdd7787dbef3bb5bc8131865b9b8905da3311bf9bae541

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

w6ya

C2

http://www.truth-capturemachine.com/w6ya/

Decoy

auden-audio.com

zombieodyssey.com

hdpthg.com

toddtechnical.com

njsdgz.com

yieldfarm.world

guardsveirfynews.net

atmamandir.info

eskisehirtostcusu.online

arrozz.net

v99king.win

jaxonboxing.com

morganevans.net

syandeg.com

valleyofplants.com

corsosportorico.com

tak.support

blacktgpc.com

herdpetshop.com

iifkvhns.xyz

Signatures

  • Formbook

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

  • Formbook Payload 3 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 31 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1244
    • C:\Users\Admin\AppData\Local\Temp\PO.exe
      "C:\Users\Admin\AppData\Local\Temp\PO.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1192
      • C:\Users\Admin\AppData\Local\Temp\PO.exe
        "C:\Users\Admin\AppData\Local\Temp\PO.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:960
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\SysWOW64\rundll32.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:652
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\PO.exe"
        3⤵
        • Deletes itself
        PID:1496

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nsdE744.tmp\lzcjm.dll
    MD5

    2167d71117d7562c8c376704df4715e4

    SHA1

    c55221cf62448f0c0d567d3e33406c94ff80a88c

    SHA256

    0aee3437cb7246fa0c515885653aa8c18103d03437a3768370b01d6fac4d1ad1

    SHA512

    255a5b641e159cad54c913cba9a9f9e4c118f3cd90ed4cb2f7339c3acee8301246dcb5f25097729ad8adf5fd74b29998381dadb3c8d8e386bcf07e9d82d74d04

  • memory/652-62-0x0000000000000000-mapping.dmp
  • memory/652-68-0x0000000000950000-0x00000000009E3000-memory.dmp
    Filesize

    588KB

  • memory/652-67-0x0000000002100000-0x0000000002403000-memory.dmp
    Filesize

    3.0MB

  • memory/652-64-0x0000000000370000-0x000000000037E000-memory.dmp
    Filesize

    56KB

  • memory/652-65-0x0000000000090000-0x00000000000BF000-memory.dmp
    Filesize

    188KB

  • memory/960-57-0x000000000041F150-mapping.dmp
  • memory/960-60-0x0000000000480000-0x0000000000494000-memory.dmp
    Filesize

    80KB

  • memory/960-59-0x0000000000700000-0x0000000000A03000-memory.dmp
    Filesize

    3.0MB

  • memory/960-56-0x0000000000400000-0x000000000042F000-memory.dmp
    Filesize

    188KB

  • memory/1192-54-0x0000000075661000-0x0000000075663000-memory.dmp
    Filesize

    8KB

  • memory/1244-61-0x00000000061A0000-0x000000000631E000-memory.dmp
    Filesize

    1.5MB

  • memory/1244-69-0x0000000006320000-0x0000000006468000-memory.dmp
    Filesize

    1.3MB

  • memory/1496-66-0x0000000000000000-mapping.dmp