Analysis

  • max time kernel
    145s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    02-07-2022 14:41

General

  • Target

    MT103-203674982.exe

  • Size

    247KB

  • MD5

    400ff0ca3ab2676f072aea68870ef70d

  • SHA1

    dfd2f2443fd103089be9ab9f6fe651399b3d19f4

  • SHA256

    7a605579f572e0ca0067f031db05ceec4f0445a09aae0a57bc36b14e5874d734

  • SHA512

    a441c8e2b7aaf60a46a95077d4296888cc0bebc694e0fefb7501bab664d2fe5a81de8ec703b66df61372dfc3a09d8d918ed9ee952dbb558181a88f535b8d329b

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

m56u

Decoy

tercantiq.com

fortvillechicken.net

spiritsandtheb.com

alliant-inc.biz

yh1902.com

xiaodewenhua.net

cityjobs.xyz

seniorlivingwisconsin.com

piadagrilla.com

truistfinancebank.online

nft-fashionlover.com

hangmandownload.com

chun888.xyz

lemonviral.com

getagrip.network

daniellepinnock.info

chiswickstudios.com

essayservicee.com

bharatpragatifoundation.com

800vn.com

Signatures

  • Formbook

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

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • Formbook Payload 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 27 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 15 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1204
    • C:\Users\Admin\AppData\Local\Temp\MT103-203674982.exe
      "C:\Users\Admin\AppData\Local\Temp\MT103-203674982.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1672
      • C:\Users\Admin\AppData\Local\Temp\binn.exe
        "C:\Users\Admin\AppData\Local\Temp\binn.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:1284
    • 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:1272
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\binn.exe"
        3⤵
          PID:1304

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\binn.exe
      Filesize

      185KB

      MD5

      e1f5a85acd28c0ede994855fa013aefa

      SHA1

      186f3d8528f4016285d3d37adb10b368eea6a2c3

      SHA256

      6c9b4c99b8aa445727927fc0a209bede836c9465b3de875cbf34425347cb0cfd

      SHA512

      a4671c682e78a32dd013c71ab53c133564c8c04bfda4ce2c96e3d7385f51c4f27d1ef26ba5e991d6b24ffdb1602f85f114d3be5195ad618b7c91ebd7fe049337

    • C:\Users\Admin\AppData\Local\Temp\binn.exe
      Filesize

      185KB

      MD5

      e1f5a85acd28c0ede994855fa013aefa

      SHA1

      186f3d8528f4016285d3d37adb10b368eea6a2c3

      SHA256

      6c9b4c99b8aa445727927fc0a209bede836c9465b3de875cbf34425347cb0cfd

      SHA512

      a4671c682e78a32dd013c71ab53c133564c8c04bfda4ce2c96e3d7385f51c4f27d1ef26ba5e991d6b24ffdb1602f85f114d3be5195ad618b7c91ebd7fe049337

    • \Users\Admin\AppData\Local\Temp\binn.exe
      Filesize

      185KB

      MD5

      e1f5a85acd28c0ede994855fa013aefa

      SHA1

      186f3d8528f4016285d3d37adb10b368eea6a2c3

      SHA256

      6c9b4c99b8aa445727927fc0a209bede836c9465b3de875cbf34425347cb0cfd

      SHA512

      a4671c682e78a32dd013c71ab53c133564c8c04bfda4ce2c96e3d7385f51c4f27d1ef26ba5e991d6b24ffdb1602f85f114d3be5195ad618b7c91ebd7fe049337

    • \Users\Admin\AppData\Local\Temp\binn.exe
      Filesize

      185KB

      MD5

      e1f5a85acd28c0ede994855fa013aefa

      SHA1

      186f3d8528f4016285d3d37adb10b368eea6a2c3

      SHA256

      6c9b4c99b8aa445727927fc0a209bede836c9465b3de875cbf34425347cb0cfd

      SHA512

      a4671c682e78a32dd013c71ab53c133564c8c04bfda4ce2c96e3d7385f51c4f27d1ef26ba5e991d6b24ffdb1602f85f114d3be5195ad618b7c91ebd7fe049337

    • memory/1204-62-0x0000000004A90000-0x0000000004BB5000-memory.dmp
      Filesize

      1.1MB

    • memory/1204-73-0x0000000004CB0000-0x0000000004E10000-memory.dmp
      Filesize

      1.4MB

    • memory/1204-71-0x0000000004CB0000-0x0000000004E10000-memory.dmp
      Filesize

      1.4MB

    • memory/1272-70-0x0000000001E60000-0x0000000001EF3000-memory.dmp
      Filesize

      588KB

    • memory/1272-63-0x0000000000000000-mapping.dmp
    • memory/1272-72-0x0000000000090000-0x00000000000BF000-memory.dmp
      Filesize

      188KB

    • memory/1272-67-0x0000000000820000-0x000000000082E000-memory.dmp
      Filesize

      56KB

    • memory/1272-69-0x0000000002090000-0x0000000002393000-memory.dmp
      Filesize

      3.0MB

    • memory/1272-68-0x0000000000090000-0x00000000000BF000-memory.dmp
      Filesize

      188KB

    • memory/1284-61-0x0000000000270000-0x0000000000284000-memory.dmp
      Filesize

      80KB

    • memory/1284-60-0x0000000000A20000-0x0000000000D23000-memory.dmp
      Filesize

      3.0MB

    • memory/1284-58-0x0000000000000000-mapping.dmp
    • memory/1304-66-0x0000000000000000-mapping.dmp
    • memory/1672-55-0x0000000075B61000-0x0000000075B63000-memory.dmp
      Filesize

      8KB

    • memory/1672-54-0x0000000000BB0000-0x0000000000BF4000-memory.dmp
      Filesize

      272KB