Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-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.

  • Loads dropped DLL 3 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.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious behavior: MapViewOfSection 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1416
    • C:\Users\Admin\AppData\Local\Temp\b85bcfc355d32617c12a2e71d4f80880.exe
      "C:\Users\Admin\AppData\Local\Temp\b85bcfc355d32617c12a2e71d4f80880.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1076
      • 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
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1692
        • 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:1528
    • C:\Windows\SysWOW64\wuapp.exe
      "C:\Windows\SysWOW64\wuapp.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Modifies Internet Explorer settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:616
      • C:\Program Files\Mozilla Firefox\Firefox.exe
        "C:\Program Files\Mozilla Firefox\Firefox.exe"
        3⤵
          PID:924

    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

    • \Users\Admin\AppData\Local\Temp\sqlite3.dll
      Filesize

      831KB

      MD5

      05ace2f6d9bef6fd9bbd05ee5262a1f2

      SHA1

      5cce2228e0d9c6cc913cf551e0bf7c76ed74ff59

      SHA256

      002459f4d4758011b4d7f36935f1fe323494b847f8c173a551076a3d30475ebc

      SHA512

      1e717a66a72eb626727144fa7458f472ada54fd1be37072c9e740945e34ba94025737aef44e54752c50c5b79a583c6a91a0d8043bf1bf7c3e7cab8537207f9fc

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

      100KB

      MD5

      62e7501ba9d2982ab16107c276d2e82a

      SHA1

      ebbb812d6cca55c6756beb4694bd430c54cd2ec9

      SHA256

      633fb361810f5cd64acfda82f0bfd93d26000c397187459b70e0d0ea922e94cf

      SHA512

      1ccc7662c751fec76204bc0db15cbb5ac20854b2c95a9a5cc82b100ae6b4c2ee0d8ad062c30bbc62a7c00884d85409ebfe6b0ce8f20b8b373602b9f4d3238ac6

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

      100KB

      MD5

      62e7501ba9d2982ab16107c276d2e82a

      SHA1

      ebbb812d6cca55c6756beb4694bd430c54cd2ec9

      SHA256

      633fb361810f5cd64acfda82f0bfd93d26000c397187459b70e0d0ea922e94cf

      SHA512

      1ccc7662c751fec76204bc0db15cbb5ac20854b2c95a9a5cc82b100ae6b4c2ee0d8ad062c30bbc62a7c00884d85409ebfe6b0ce8f20b8b373602b9f4d3238ac6

    • memory/616-73-0x0000000000B00000-0x0000000000E03000-memory.dmp
      Filesize

      3.0MB

    • memory/616-70-0x0000000000000000-mapping.dmp
    • memory/616-76-0x0000000000090000-0x00000000000BD000-memory.dmp
      Filesize

      180KB

    • memory/616-74-0x0000000000830000-0x00000000008BF000-memory.dmp
      Filesize

      572KB

    • memory/616-72-0x0000000000090000-0x00000000000BD000-memory.dmp
      Filesize

      180KB

    • memory/616-71-0x0000000001330000-0x000000000133B000-memory.dmp
      Filesize

      44KB

    • memory/1076-54-0x0000000076681000-0x0000000076683000-memory.dmp
      Filesize

      8KB

    • memory/1416-69-0x0000000004DE0000-0x0000000004EF0000-memory.dmp
      Filesize

      1.1MB

    • memory/1416-75-0x0000000003D80000-0x0000000003E3F000-memory.dmp
      Filesize

      764KB

    • memory/1416-78-0x0000000003D80000-0x0000000003E3F000-memory.dmp
      Filesize

      764KB

    • memory/1528-68-0x0000000000160000-0x0000000000170000-memory.dmp
      Filesize

      64KB

    • memory/1528-67-0x00000000008F0000-0x0000000000BF3000-memory.dmp
      Filesize

      3.0MB

    • memory/1528-63-0x00000000004012B0-mapping.dmp
    • memory/1528-66-0x0000000000401000-0x000000000042F000-memory.dmp
      Filesize

      184KB

    • memory/1528-65-0x0000000000400000-0x000000000042F000-memory.dmp
      Filesize

      188KB

    • memory/1692-56-0x0000000000000000-mapping.dmp