Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    11-09-2021 15:55

General

  • Target

    Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe

  • Size

    814KB

  • MD5

    717297fec68e9172593a36a67549619f

  • SHA1

    73e8625983cb413b91b608db347177584c680a22

  • SHA256

    4d80ab79360b092bb5d8fa41d14388dffe5ef42839b6dbbf741f0ce5c3424d1e

  • SHA512

    3f363a8b8971d843f7c158b3dc76de854895a76fe0e4a6dbb6b40b650d0cec760bea15179128e52fed044e2cee6964f2b70db5abf253e873feb327d6b99ba7df

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

3nop

C2

http://www.jakesplacebarbers.com/3nop/

Decoy

videohm.com

panache-rose.com

alnooncars-kw.com

trueblue2u.com

brussels-cafe.com

ip2c.net

influenzerr.com

rbcoq.com

zzful.com

drainthe.com

sumaholesson.com

cursosaprovados.com

genotecinc.com

dbrulhart.com

theapiarystudios.com

kensyu-kan.com

dkku88.com

tikhyper.com

aztecnort.com

homebrim.com

Signatures

  • Formbook

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

  • Formbook Payload 3 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 54 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:3032
    • C:\Users\Admin\AppData\Local\Temp\Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe
      "C:\Users\Admin\AppData\Local\Temp\Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:396
      • C:\Windows\SysWOW64\secinit.exe
        C:\Windows\System32\secinit.exe
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:1496
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\SysWOW64\cmd.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2824
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Windows\SysWOW64\secinit.exe"
        3⤵
          PID:4060

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/396-114-0x0000000000650000-0x0000000000651000-memory.dmp
      Filesize

      4KB

    • memory/1496-118-0x0000000000000000-mapping.dmp
    • memory/1496-119-0x0000000000D10000-0x0000000000D11000-memory.dmp
      Filesize

      4KB

    • memory/1496-120-0x0000000010410000-0x000000001043E000-memory.dmp
      Filesize

      184KB

    • memory/1496-122-0x0000000001010000-0x0000000001024000-memory.dmp
      Filesize

      80KB

    • memory/1496-121-0x0000000004D60000-0x0000000005080000-memory.dmp
      Filesize

      3.1MB

    • memory/2824-126-0x0000000000F60000-0x0000000000FB9000-memory.dmp
      Filesize

      356KB

    • memory/2824-124-0x0000000000000000-mapping.dmp
    • memory/2824-127-0x0000000000B60000-0x0000000000B8E000-memory.dmp
      Filesize

      184KB

    • memory/2824-128-0x0000000003410000-0x0000000003730000-memory.dmp
      Filesize

      3.1MB

    • memory/2824-129-0x0000000003310000-0x00000000033A3000-memory.dmp
      Filesize

      588KB

    • memory/3032-123-0x0000000004DF0000-0x0000000004EF6000-memory.dmp
      Filesize

      1.0MB

    • memory/3032-130-0x0000000002DF0000-0x0000000002EBE000-memory.dmp
      Filesize

      824KB

    • memory/4060-125-0x0000000000000000-mapping.dmp