Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-12-2022 11:21

General

  • Target

    7c0561d38ad8d30935cc4750ef54f86ae0e8fedd0858278b6a202cf9589ae4d5.exe

  • Size

    336KB

  • MD5

    3b33c707e522fc9e706c62687387ddbc

  • SHA1

    d98eb37e12d6d7b03fd94933ab5f7dc445c67477

  • SHA256

    7c0561d38ad8d30935cc4750ef54f86ae0e8fedd0858278b6a202cf9589ae4d5

  • SHA512

    7591fdefeff5a11fea8726d784a62229de33378f54cd27841647c53983fca87f055e40f6743bd62d7bb0493bd11b4d3a4c19529f890d924f6872d804b19c8695

  • SSDEEP

    6144:9kwOU0Tna911TEwbdaqga1lpGC1xA67/jYUUEU6LrgJxet8ZJ8EGlu:Cf41y3ajpPA678UrU6LrgfeU8EGY

Malware Config

Extracted

Family

formbook

Campaign

ctap

Decoy

7fuiHU5O7pBugItrXtDlRbQzVNAypQ==

Ioe4Ezkvrkk5SljtGsXC

7SdYmzWqxYzoB10eYg==

87z12VKpqmy0nXHtGsXC

frPRoZR38nhTXl/tGsXC

JybcU3xwAWn21yEPd4XnKA==

B6LTKeV3SeQZAg==

9iFOJSEVtE+I6ea4tn6M72ANGm3K

bROuHdVCVl63QIZuI2etey+ugP0=

25FDh/Be3fhaReK+BwZm9aY+og==

ipYbazKawI7oB10eYg==

Y3ONgI2GHcStmm5WhEZCsE/GlNJovg==

NMjp1U2zzpPoB10eYg==

ZZOygHxoGkBxNTz1RnI=

Hy1dkswBcyQh

94qXZbB1+8ciD4Q=

JUhyQ8Fxl+4gBA==

7wuj4eTJFutgR7+k1R8mIA==

Nj3QJ1RBulY2AMS/1R8mIA==

LjFXk8zI5vgdq8N6ropiNA==

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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 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:1040
    • C:\Users\Admin\AppData\Local\Temp\7c0561d38ad8d30935cc4750ef54f86ae0e8fedd0858278b6a202cf9589ae4d5.exe
      "C:\Users\Admin\AppData\Local\Temp\7c0561d38ad8d30935cc4750ef54f86ae0e8fedd0858278b6a202cf9589ae4d5.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4572
      • C:\Users\Admin\AppData\Local\Temp\pxzpa.exe
        "C:\Users\Admin\AppData\Local\Temp\pxzpa.exe" C:\Users\Admin\AppData\Local\Temp\bvfschl.llo
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1812
        • C:\Users\Admin\AppData\Local\Temp\pxzpa.exe
          "C:\Users\Admin\AppData\Local\Temp\pxzpa.exe"
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          PID:412
    • C:\Windows\SysWOW64\cmmon32.exe
      "C:\Windows\SysWOW64\cmmon32.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:3508
      • C:\Program Files\Mozilla Firefox\Firefox.exe
        "C:\Program Files\Mozilla Firefox\Firefox.exe"
        3⤵
          PID:1668

    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\bvfschl.llo
      Filesize

      5KB

      MD5

      234ecaa2516da7694806821607cb957f

      SHA1

      5e24bc4f64658bd2c9bbfed88ca6d39d1f84f278

      SHA256

      4559491a1389e02acd69695203a90b6692df27d34a3095ba7f4f753562754f56

      SHA512

      1a0fb05636f903ea3b583ec022b3d1182ee7c7a872abfc99822b633cb7bb2a305200406093430e308ecaaba28b5ed2ed84223812962863592d4d2cd399b18f8c

    • C:\Users\Admin\AppData\Local\Temp\puacwrlc.q
      Filesize

      185KB

      MD5

      ae560924ece971bea500b39cf812665d

      SHA1

      db73b123c1edb1cde8925d784f1f793aacf26f6e

      SHA256

      176f6aaf297901b7100ab3164b6229042dc858876c48c04b7efeef2e71798176

      SHA512

      67fdbe987fa13481daccc6432034ddf4a33f1033a469adbfa347d8361a9290e5dcb183a45085486ef90d1409f991494c26902d85c1c8bf29ee98753dcbb1a8e1

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

      281KB

      MD5

      ca0cca1b24cac955c84585eeefab6944

      SHA1

      517916bf6278c0584e8c50e2deeb5d75c67a413b

      SHA256

      aa4e786e9913c83ff743a8dfce23200f1c9b10a0040bd0d6507194c373607585

      SHA512

      28194e9239b47707438c2e1637d27506335253d5ba051b15e856a0afa1f88984f793c8c8a87b28b322efa7bae7db47d6f0a8f12091275f4cc16a1226ab4bb488

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

      281KB

      MD5

      ca0cca1b24cac955c84585eeefab6944

      SHA1

      517916bf6278c0584e8c50e2deeb5d75c67a413b

      SHA256

      aa4e786e9913c83ff743a8dfce23200f1c9b10a0040bd0d6507194c373607585

      SHA512

      28194e9239b47707438c2e1637d27506335253d5ba051b15e856a0afa1f88984f793c8c8a87b28b322efa7bae7db47d6f0a8f12091275f4cc16a1226ab4bb488

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

      281KB

      MD5

      ca0cca1b24cac955c84585eeefab6944

      SHA1

      517916bf6278c0584e8c50e2deeb5d75c67a413b

      SHA256

      aa4e786e9913c83ff743a8dfce23200f1c9b10a0040bd0d6507194c373607585

      SHA512

      28194e9239b47707438c2e1637d27506335253d5ba051b15e856a0afa1f88984f793c8c8a87b28b322efa7bae7db47d6f0a8f12091275f4cc16a1226ab4bb488

    • memory/412-142-0x0000000001420000-0x0000000001430000-memory.dmp
      Filesize

      64KB

    • memory/412-139-0x0000000000400000-0x000000000042F000-memory.dmp
      Filesize

      188KB

    • memory/412-140-0x0000000000401000-0x000000000042F000-memory.dmp
      Filesize

      184KB

    • memory/412-141-0x00000000016F0000-0x0000000001A3A000-memory.dmp
      Filesize

      3.3MB

    • memory/412-137-0x0000000000000000-mapping.dmp
    • memory/412-145-0x0000000000400000-0x000000000042F000-memory.dmp
      Filesize

      188KB

    • memory/412-146-0x0000000000401000-0x000000000042F000-memory.dmp
      Filesize

      184KB

    • memory/1040-151-0x00000000087C0000-0x0000000008938000-memory.dmp
      Filesize

      1.5MB

    • memory/1040-143-0x00000000087C0000-0x0000000008938000-memory.dmp
      Filesize

      1.5MB

    • memory/1040-154-0x0000000009070000-0x00000000091DA000-memory.dmp
      Filesize

      1.4MB

    • memory/1040-152-0x0000000009070000-0x00000000091DA000-memory.dmp
      Filesize

      1.4MB

    • memory/1812-132-0x0000000000000000-mapping.dmp
    • memory/3508-149-0x00000000026B0000-0x00000000029FA000-memory.dmp
      Filesize

      3.3MB

    • memory/3508-150-0x00000000023D0000-0x000000000245F000-memory.dmp
      Filesize

      572KB

    • memory/3508-148-0x00000000003E0000-0x000000000040D000-memory.dmp
      Filesize

      180KB

    • memory/3508-147-0x0000000000500000-0x000000000050C000-memory.dmp
      Filesize

      48KB

    • memory/3508-153-0x00000000003E0000-0x000000000040D000-memory.dmp
      Filesize

      180KB

    • memory/3508-144-0x0000000000000000-mapping.dmp