Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    15-10-2021 17:18

General

  • Target

    20211015168444093723.exe

  • Size

    261KB

  • MD5

    4452b76f214c4a5f5e520e579da088d8

  • SHA1

    fcad7662120fe40c1a7dc052e40be8e67dfd7a93

  • SHA256

    51f987ef74839fa7ba0b2c959aee7ad244c30231259bc22b4b778a71760e7262

  • SHA512

    32ed1bcd1385d105bcb2d0eba49e85fc71f15687bc42ce9eb80d9351d1e363c93c35f7589a0b013cb03f352dc4d50fc32c6c347f1cd6fa528e9b73e5d34d7482

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

nd1w

C2

http://www.ahlongpteltd.com/nd1w/

Decoy

cartographieinterieure.store

de-tanautorisierung-6439.xyz

maxisezon.com

spottsalodio.xyz

thesocialguild.net

petemergencydoctor.com

czhtfmgj.com

incontrilocalimilano.com

132kingrd.com

clearviewsatellitesolutions.com

shopingmanplus.com

compuserviciosway.com

millportservicesltd.com

ticketinsurey.club

metro-club.com

aboutpoliticsofatom.com

brebawake.com

yurteam.com

dropadoo.com

wcsaroma2012.com

Signatures

  • Formbook

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

  • Formbook Payload 3 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 60 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:2872
    • C:\Users\Admin\AppData\Local\Temp\20211015168444093723.exe
      "C:\Users\Admin\AppData\Local\Temp\20211015168444093723.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1892
      • C:\Users\Admin\AppData\Local\Temp\20211015168444093723.exe
        "C:\Users\Admin\AppData\Local\Temp\20211015168444093723.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:3900
    • C:\Windows\SysWOW64\cscript.exe
      "C:\Windows\SysWOW64\cscript.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3636
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\20211015168444093723.exe"
        3⤵
          PID:4044

    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\nsuDBDB.tmp\jwwctlitql.dll
      MD5

      d0409fa7c39791daf02a4d27e6f2d83b

      SHA1

      17b8ac16f25a38f7db67b8b4a3027d3202d146e0

      SHA256

      2fae3b8fd55f815004c35af241c39035de10328fed85172886d343e8c895b78e

      SHA512

      41950d21941b4905f665ea20d9ef4807b54a1c6cf05fb1a339bdf99455d42058cfad6bf6679c536c1c6d4c35639468d4f49bd8e9537fb19f8a8d3cd87c79a37c

    • memory/2872-128-0x0000000004C10000-0x0000000004D69000-memory.dmp
      Filesize

      1.3MB

    • memory/2872-121-0x0000000004AE0000-0x0000000004C0B000-memory.dmp
      Filesize

      1.2MB

    • memory/3636-124-0x0000000002C00000-0x0000000002C2F000-memory.dmp
      Filesize

      188KB

    • memory/3636-127-0x0000000004350000-0x00000000043E3000-memory.dmp
      Filesize

      588KB

    • memory/3636-126-0x00000000045F0000-0x0000000004910000-memory.dmp
      Filesize

      3.1MB

    • memory/3636-122-0x0000000000000000-mapping.dmp
    • memory/3636-123-0x0000000000010000-0x0000000000037000-memory.dmp
      Filesize

      156KB

    • memory/3900-119-0x00000000009F0000-0x0000000000D10000-memory.dmp
      Filesize

      3.1MB

    • memory/3900-120-0x00000000006E0000-0x00000000006F4000-memory.dmp
      Filesize

      80KB

    • memory/3900-117-0x000000000041F170-mapping.dmp
    • memory/3900-116-0x0000000000400000-0x000000000042F000-memory.dmp
      Filesize

      188KB

    • memory/4044-125-0x0000000000000000-mapping.dmp