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Analysis

  • max time kernel
    146s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    23/12/2024, 22:00

General

  • Target

    faktura,pdf.exe

  • Size

    484KB

  • MD5

    0c2779d8b1c98fee81f0e5f0f47b1076

  • SHA1

    5dc8b937c91d42bfb4870970a85d6b415e208aba

  • SHA256

    02928b2d3818c82f6b0cd4d1c69a5717b36d56a6ede9e8b6e6dfad55d9165406

  • SHA512

    4a60973ec7ea718fb5d562d030876987fb5006c9a1f0a2241dc7aca1800c0c386aed3be4e651f7aa158ccf4d133ee7e8f0de4f608f0f1a7577ed9e4ca9fcbc3b

  • SSDEEP

    6144:eNeZkjUUpNggUZvLl6SpvAkfcxMLiEVCN4WQBWkNtU:eNAi5UFLl6SpvAkfcx4iEVRWQrNtU

Malware Config

Extracted

Family

formbook

Campaign

nob2

Decoy

en+O8QOx9zDZZo6B

4OtleJKQETLZZo6B

xGU74u2nB/TAvy6QCqHWGzhs5rjgJKkH8Q==

Hq3a8RPSF4BJjsCnvBuPXSngiQ==

Ca1w6R7ZEzrZZo6B

V3N7ImFtXIccbqg=

jkdEFrI4Bjj/

rGXE4vP2e7leaO0+Mw==

mFACnMuCTkL+R3Fh+5rYDQ==

k1R/bHxIDwfQHVtMUnukJu3OiA==

Goa71OKQKE9ALQ==

TUVlDTovqKZqfHiwJHaK

VBnCLD8NiCkMIw==

fIbQ7Joi+SgIi/y6E7P5RoPjihFL

UTcvz+rs7OfK+DARp/kwBpv6Jq7TVgs=

rF084AkQIlQmdZwZOg==

6eJWgNCEuf3EAbCxkXiM

JcyQCi86x+3MC8IYjvN0uyjYjg==

S+8thMWBzyTZZo6B

5dDUXJSODfnS/DkyX8Nobh0=

Signatures

  • Formbook

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

  • Formbook family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 33 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1156
    • C:\Users\Admin\AppData\Local\Temp\faktura,pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\faktura,pdf.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2400
      • C:\Users\Admin\AppData\Local\Temp\lejdjsong.exe
        "C:\Users\Admin\AppData\Local\Temp\lejdjsong.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2536
        • C:\Users\Admin\AppData\Local\Temp\lejdjsong.exe
          "C:\Users\Admin\AppData\Local\Temp\lejdjsong.exe"
          4⤵
          • Checks computer location settings
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          PID:2112
    • C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\SysWOW64\wscript.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      PID:2460

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\pkzbr.e

    Filesize

    185KB

    MD5

    591d6e5750339bb3848fd5abc97311f0

    SHA1

    d688280ea879a1a309f72fede33f6695ec5ed105

    SHA256

    b778488ba471b2edfc808c5e4d55e4e0221d7ca23100c6cf563177db8f9b5fc8

    SHA512

    81dc6568ea3b278aa320f04b651b2b9b100e891eb8ecca21c6685031865ff6a3a0129c2a28acc5f7ddc2997db4db12ead12bcca89a786f9c402e799a4eea3ae6

  • C:\Users\Admin\AppData\Local\Temp\vnbnucchqkc.gr

    Filesize

    4KB

    MD5

    d2a837454edcdf54d22d808482386ba7

    SHA1

    f8483cba5522ead7d1b557914ff3c411fc4df541

    SHA256

    2ba5c60045c398ebd1e59e2225250b8f09536e4a4ba4eec26186a68fb9574a0a

    SHA512

    4078b008e9a7dce2e4938936bef3bcb3262d29f1ffbc45fed75093cb742b6ed7c2de0c98f83d3db0289d6b9a02a28a115b44aeb28a258d95e18236b230cf17d3

  • \Users\Admin\AppData\Local\Temp\lejdjsong.exe

    Filesize

    73KB

    MD5

    86a148c54d7a5ee49386393a7bd64e75

    SHA1

    3bcd7adf68d28514c0d362964bf4ac1e067bda6f

    SHA256

    7cc777f463f00d5389c55fe6cc7904b427efd52ab0b2e932ddd1210d6c0eedb6

    SHA512

    214f5530b2adc519243cd0c10af2987275988b45e1050f147391ece49c3ab2ae3ec4dff4f79598a6f9061ae4d70fbc78334d4a1ae2e863ab92628e0b4beb00fb

  • memory/1156-23-0x00000000050A0000-0x0000000005216000-memory.dmp

    Filesize

    1.5MB

  • memory/1156-17-0x00000000050A0000-0x0000000005216000-memory.dmp

    Filesize

    1.5MB

  • memory/2112-16-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/2112-15-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/2112-14-0x0000000000401000-0x000000000042F000-memory.dmp

    Filesize

    184KB

  • memory/2112-19-0x0000000000401000-0x000000000042F000-memory.dmp

    Filesize

    184KB

  • memory/2460-21-0x0000000000AC0000-0x0000000000AE6000-memory.dmp

    Filesize

    152KB

  • memory/2460-20-0x0000000000AC0000-0x0000000000AE6000-memory.dmp

    Filesize

    152KB

  • memory/2460-22-0x0000000000070000-0x000000000009D000-memory.dmp

    Filesize

    180KB

  • memory/2536-8-0x00000000000F0000-0x00000000000F2000-memory.dmp

    Filesize

    8KB