Analysis

  • max time kernel
    152s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-12-2022 01:02

General

  • Target

    338beb0d3fe9cf2946527108a44d24b8.exe

  • Size

    601KB

  • MD5

    338beb0d3fe9cf2946527108a44d24b8

  • SHA1

    c2545a831bd37190ca8fe20e53346da6693a8d48

  • SHA256

    28dcfab7a0d5e305ef2c14bb3e0fc88d9fba7e38affd2a4fd89ab32c103add38

  • SHA512

    638d3d6d6a8c0ef9f97183c95aad8016ab791ea264a0717c86639c397eb4b90206893ec4d9ab43b18966cea771b614d604c3c9d8e7d1feb428f6657c31ae56a3

  • SSDEEP

    12288:gRmlQghT+BJnaHG72c1KRkswZIIQe8z94vd2:gwge6JcCsmIIWwk

Malware Config

Extracted

Family

formbook

Campaign

elhb

Decoy

BxGzoacPQ3mFBGhbtixjHOm2l30=

dTRqRkWfuBbGMmsPJA==

Pix+zpOG6+Gk

N+3dNZ0ZjOtrRnnj

xUv06VOm45P441HWCmmfSum2l30=

Sx5JuwMfaRrJdK3r

cgU6nPNKa14KC4K40cp4wbkm/KpzfwM=

rV8A2UGJrlbYxa48P40=

Gz3szbYLIYI6l+4=

QU3ru637P+U4itwRQ3n7n2c=

DdkGzbEPU4Fy4h2bZLVXNzz0

QPUo8R5qn9KUnhRRtmVY8/Zp5Xw=

q+EX7juJsVR79msRSnsUxg==

/34eEpvsLS8lw7uom5U=

HEVrEXHlHMlNNp9IlsY+0Q==

KZ/SIWnI7eeog+pwY9uAw+PmmhfjXQ==

Kdn7YMcoXYWjHId+0jhkHem2l30=

R7lnYeAfO1MUHIWyz9c/aoIvHxSvQA==

P7ZYVqmG6+Gk

hlk7m1hdnb0=

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 46 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 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 13 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:1032
    • C:\Users\Admin\AppData\Local\Temp\338beb0d3fe9cf2946527108a44d24b8.exe
      "C:\Users\Admin\AppData\Local\Temp\338beb0d3fe9cf2946527108a44d24b8.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2404
      • C:\Users\Admin\AppData\Local\Temp\oodbofhab.exe
        "C:\Users\Admin\AppData\Local\Temp\oodbofhab.exe" "C:\Users\Admin\AppData\Local\Temp\jzxcvhdss.au3"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:1472
        • C:\Users\Admin\AppData\Local\Temp\oodbofhab.exe
          "C:\Users\Admin\AppData\Local\Temp\oodbofhab.exe"
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          PID:2348
    • C:\Windows\SysWOW64\control.exe
      "C:\Windows\SysWOW64\control.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:4364
      • C:\Program Files\Mozilla Firefox\Firefox.exe
        "C:\Program Files\Mozilla Firefox\Firefox.exe"
        3⤵
          PID:4000

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\jzxcvhdss.au3

      Filesize

      6KB

      MD5

      63ba1c6a968a1cfeab47670db2025431

      SHA1

      8d7d5d3b3ec87b7beb587b2860b98d689c6e0534

      SHA256

      1d9573d2e106477fb16a4428bab972f20a5059017649d1f814e9d03fcb5b31dc

      SHA512

      4c06e4d475351a7fc926092c573662d1a826cbec8201a1437bc150e6232ca8e96bb8c8ee2cca44f1bd17fc3a9e20f52c2f434a258d603b5d7d1a09d60bb64782

    • C:\Users\Admin\AppData\Local\Temp\nofpurtiq.hx

      Filesize

      61KB

      MD5

      281e03b7c9e8a01cdbe97f67b2f306bc

      SHA1

      233310d4efb0d7f1f938820805df38b072b4ba02

      SHA256

      ba60f46e330d508b49b4ce5ab91d1e47e9368f23e93fd56490705e722de33aec

      SHA512

      59db343e276a289b189bd3cd2503e6fbe6d5490de9721f93a715ef2c139bf24dbfa27b36499c626ce3f6eee2bae9cec1aa73d674d72a3b9fc3daee2cb9529513

    • C:\Users\Admin\AppData\Local\Temp\oodbofhab.exe

      Filesize

      872KB

      MD5

      c56b5f0201a3b3de53e561fe76912bfd

      SHA1

      2a4062e10a5de813f5688221dbeb3f3ff33eb417

      SHA256

      237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

      SHA512

      195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

    • C:\Users\Admin\AppData\Local\Temp\oodbofhab.exe

      Filesize

      872KB

      MD5

      c56b5f0201a3b3de53e561fe76912bfd

      SHA1

      2a4062e10a5de813f5688221dbeb3f3ff33eb417

      SHA256

      237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

      SHA512

      195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

    • C:\Users\Admin\AppData\Local\Temp\oodbofhab.exe

      Filesize

      872KB

      MD5

      c56b5f0201a3b3de53e561fe76912bfd

      SHA1

      2a4062e10a5de813f5688221dbeb3f3ff33eb417

      SHA256

      237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

      SHA512

      195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

    • C:\Users\Admin\AppData\Local\Temp\vcbtdjpcoxy.ksy

      Filesize

      185KB

      MD5

      e4375e51da7dc180f6a14918c8fbcd58

      SHA1

      a738fd596c59dfd1844f847c943aab9a8b4ed061

      SHA256

      a6e201672750badfb866b7c01a532598f8a92b4a014ca2090072242e1975b843

      SHA512

      741a54a686d2d61b6eaef82bc51839b7ee1565a99048e42ecb47aa267ad2e5a82ff8c11c7bc00ed8ad86e239e6fd54f9239a63660cdd8310dcfd1900d72a4732

    • memory/1032-153-0x0000000002E70000-0x0000000002F2C000-memory.dmp

      Filesize

      752KB

    • memory/1032-151-0x0000000002E70000-0x0000000002F2C000-memory.dmp

      Filesize

      752KB

    • memory/1032-144-0x00000000028C0000-0x00000000029EF000-memory.dmp

      Filesize

      1.2MB

    • memory/1472-132-0x0000000000000000-mapping.dmp

    • memory/2348-142-0x0000000000422000-0x0000000000424000-memory.dmp

      Filesize

      8KB

    • memory/2348-143-0x00000000009B0000-0x00000000009C0000-memory.dmp

      Filesize

      64KB

    • memory/2348-141-0x00000000012C0000-0x000000000160A000-memory.dmp

      Filesize

      3.3MB

    • memory/2348-140-0x0000000000401000-0x000000000042F000-memory.dmp

      Filesize

      184KB

    • memory/2348-139-0x0000000000400000-0x000000000042F000-memory.dmp

      Filesize

      188KB

    • memory/2348-137-0x0000000000000000-mapping.dmp

    • memory/4364-145-0x0000000000000000-mapping.dmp

    • memory/4364-146-0x0000000000C50000-0x0000000000C77000-memory.dmp

      Filesize

      156KB

    • memory/4364-147-0x0000000000120000-0x000000000014D000-memory.dmp

      Filesize

      180KB

    • memory/4364-149-0x0000000002240000-0x000000000258A000-memory.dmp

      Filesize

      3.3MB

    • memory/4364-150-0x0000000002180000-0x000000000220F000-memory.dmp

      Filesize

      572KB

    • memory/4364-152-0x0000000000120000-0x000000000014D000-memory.dmp

      Filesize

      180KB