Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-01-2023 05:12

General

  • Target

    b85bcfc355d32617c12a2e71d4f80880.exe

  • Size

    271KB

  • MD5

    b85bcfc355d32617c12a2e71d4f80880

  • SHA1

    8f5e2fcc9006bdbdcab9b6e15893b781fb893775

  • SHA256

    b9f158fac329391c893814424e77c4f9fc0460026b93327d8cf35598a561a1de

  • SHA512

    90874f7c64abd954ec34b4152dee1562cb55af65916e854dcf9c52f4be0270ff71c3fe57f0466f7dc18ce49c5cface4b5818df355a847bba5a4c982721b56bd5

  • SSDEEP

    6144:QBn1vvXZCzNhTIyD2bE8Nf7B0AxHklinnqPazURP3gawRwcV:gv+m/NDB0AxHklinnqPai3gdScV

Malware Config

Extracted

Family

formbook

Campaign

f4ca

Decoy

omFHB5ajfJi1UEIEV9XcoRw=

UBjJkmQPyprdhcFF/bdCWQ==

evGKkBUj1je+otcfpw==

KgvGVeOATSt3nug0BIOm2JvOQycB

Lv6o3K0r9aSjI0lr9fg1txw=

LH1jJb/HieQpsEdqWCQTvX2PmsDVIeg=

99dte0XauJfk6Xv+uQxJFgA1gMktBA==

21FkkGB9gMniDQw2ffu6

r4lKBM/q6TZwVZfS

F+14qHeVWi56KdQ=

BgWXRsVoICMvvQ==

I+EozFl0Uy56KdQ=

xoXCgEllKEbWfjFCCLo=

qo9G1lXvvGt5GkxrLQWw

ORNlYic0PJ2ip4geEFSv

Yj+GFpvFxy0uVYx1fLI/XQ==

XL+veIKPjOTe4fjvFs+n

D2JKVAfuakXCAyoEvw==

voWJU81tH56wvt/vImbCcgVd

dVEcwFrmb8bZ4vXvFs+n

Signatures

  • Formbook

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

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 62 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 14 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2056
    • C:\Users\Admin\AppData\Local\Temp\b85bcfc355d32617c12a2e71d4f80880.exe
      "C:\Users\Admin\AppData\Local\Temp\b85bcfc355d32617c12a2e71d4f80880.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1572
      • C:\Users\Admin\AppData\Local\Temp\ymloqhw.exe
        "C:\Users\Admin\AppData\Local\Temp\ymloqhw.exe" C:\Users\Admin\AppData\Local\Temp\mpghhn.eq
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:4880
        • C:\Users\Admin\AppData\Local\Temp\ymloqhw.exe
          "C:\Users\Admin\AppData\Local\Temp\ymloqhw.exe"
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          PID:4976
    • C:\Windows\SysWOW64\help.exe
      "C:\Windows\SysWOW64\help.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Modifies Internet Explorer settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1476
      • C:\Program Files\Mozilla Firefox\Firefox.exe
        "C:\Program Files\Mozilla Firefox\Firefox.exe"
        3⤵
          PID:4228

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\hpthvgglt.l
      Filesize

      185KB

      MD5

      fb17e00ac583fe89f38f0bbb9ccb8050

      SHA1

      d46337d1555b7e55b0c93119bb64674e76e9d708

      SHA256

      52804ab58a315767b6a1e6aa2d2929c59fcebbf9987c1b1a96b29b5058cd2c2c

      SHA512

      3e7f33d00628e6dc65cae8ddbf6cc84a1ef2ae1216f7f95723f1045f98315361c4339bddae5045ef150052bd4e2212ff751476389da8f2a9abc86b7c841ae739

    • C:\Users\Admin\AppData\Local\Temp\mpghhn.eq
      Filesize

      5KB

      MD5

      c066e7e0e80848e742991ebd6b4312fe

      SHA1

      c837d365515949d61e35166a605019f9577b9755

      SHA256

      1864986a084fa6adcf2e34ca40bbbac13c238af9f9c3238123273bf2875c207c

      SHA512

      6ba1556565903a9bb2754e615d2feade7d14df0b59a48fc68a08a0d9ff6cc8f350f2897ecb04685e3934ca0770d346e858d8e6089b8460d87837e2dbc5dc8f76

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

      100KB

      MD5

      62e7501ba9d2982ab16107c276d2e82a

      SHA1

      ebbb812d6cca55c6756beb4694bd430c54cd2ec9

      SHA256

      633fb361810f5cd64acfda82f0bfd93d26000c397187459b70e0d0ea922e94cf

      SHA512

      1ccc7662c751fec76204bc0db15cbb5ac20854b2c95a9a5cc82b100ae6b4c2ee0d8ad062c30bbc62a7c00884d85409ebfe6b0ce8f20b8b373602b9f4d3238ac6

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

      100KB

      MD5

      62e7501ba9d2982ab16107c276d2e82a

      SHA1

      ebbb812d6cca55c6756beb4694bd430c54cd2ec9

      SHA256

      633fb361810f5cd64acfda82f0bfd93d26000c397187459b70e0d0ea922e94cf

      SHA512

      1ccc7662c751fec76204bc0db15cbb5ac20854b2c95a9a5cc82b100ae6b4c2ee0d8ad062c30bbc62a7c00884d85409ebfe6b0ce8f20b8b373602b9f4d3238ac6

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

      100KB

      MD5

      62e7501ba9d2982ab16107c276d2e82a

      SHA1

      ebbb812d6cca55c6756beb4694bd430c54cd2ec9

      SHA256

      633fb361810f5cd64acfda82f0bfd93d26000c397187459b70e0d0ea922e94cf

      SHA512

      1ccc7662c751fec76204bc0db15cbb5ac20854b2c95a9a5cc82b100ae6b4c2ee0d8ad062c30bbc62a7c00884d85409ebfe6b0ce8f20b8b373602b9f4d3238ac6

    • memory/1476-145-0x0000000000480000-0x0000000000487000-memory.dmp
      Filesize

      28KB

    • memory/1476-149-0x0000000000A40000-0x0000000000ACF000-memory.dmp
      Filesize

      572KB

    • memory/1476-148-0x0000000000500000-0x000000000052D000-memory.dmp
      Filesize

      180KB

    • memory/1476-147-0x0000000000500000-0x000000000052D000-memory.dmp
      Filesize

      180KB

    • memory/1476-146-0x0000000000BB0000-0x0000000000EFA000-memory.dmp
      Filesize

      3.3MB

    • memory/1476-143-0x0000000000000000-mapping.dmp
    • memory/2056-176-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-182-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-222-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-220-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-221-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-219-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-218-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-150-0x0000000008980000-0x0000000008AD3000-memory.dmp
      Filesize

      1.3MB

    • memory/2056-151-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-152-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-153-0x0000000002970000-0x0000000002980000-memory.dmp
      Filesize

      64KB

    • memory/2056-154-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-155-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-156-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-157-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-158-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-159-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-160-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-161-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-162-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-163-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-164-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-165-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-166-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-167-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-168-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-169-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-170-0x0000000007F10000-0x0000000007F20000-memory.dmp
      Filesize

      64KB

    • memory/2056-171-0x0000000007F10000-0x0000000007F20000-memory.dmp
      Filesize

      64KB

    • memory/2056-172-0x0000000008980000-0x0000000008AD3000-memory.dmp
      Filesize

      1.3MB

    • memory/2056-173-0x0000000002970000-0x0000000002980000-memory.dmp
      Filesize

      64KB

    • memory/2056-174-0x0000000007F10000-0x0000000007F20000-memory.dmp
      Filesize

      64KB

    • memory/2056-175-0x0000000007F10000-0x0000000007F20000-memory.dmp
      Filesize

      64KB

    • memory/2056-142-0x00000000085F0000-0x0000000008735000-memory.dmp
      Filesize

      1.3MB

    • memory/2056-177-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-178-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-179-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-180-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-181-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-217-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-183-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-184-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-185-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-186-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-187-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-188-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-189-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-190-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-191-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-192-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-193-0x00000000023A0000-0x00000000023B0000-memory.dmp
      Filesize

      64KB

    • memory/2056-194-0x00000000023A0000-0x00000000023B0000-memory.dmp
      Filesize

      64KB

    • memory/2056-195-0x00000000023A0000-0x00000000023B0000-memory.dmp
      Filesize

      64KB

    • memory/2056-196-0x00000000023A0000-0x00000000023B0000-memory.dmp
      Filesize

      64KB

    • memory/2056-197-0x00000000023A0000-0x00000000023B0000-memory.dmp
      Filesize

      64KB

    • memory/2056-198-0x00000000023A0000-0x00000000023B0000-memory.dmp
      Filesize

      64KB

    • memory/2056-199-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-200-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-201-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-202-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-203-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-204-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-205-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-206-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-207-0x0000000002470000-0x0000000002480000-memory.dmp
      Filesize

      64KB

    • memory/2056-208-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-209-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-211-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-214-0x0000000002AE0000-0x0000000002AF0000-memory.dmp
      Filesize

      64KB

    • memory/2056-215-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-213-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/2056-210-0x0000000002460000-0x0000000002470000-memory.dmp
      Filesize

      64KB

    • memory/4880-132-0x0000000000000000-mapping.dmp
    • memory/4976-144-0x0000000000790000-0x00000000007BF000-memory.dmp
      Filesize

      188KB

    • memory/4976-137-0x0000000000000000-mapping.dmp
    • memory/4976-139-0x0000000000790000-0x00000000007BF000-memory.dmp
      Filesize

      188KB

    • memory/4976-140-0x0000000000DB0000-0x00000000010FA000-memory.dmp
      Filesize

      3.3MB

    • memory/4976-141-0x0000000000C70000-0x0000000000C80000-memory.dmp
      Filesize

      64KB