Analysis

  • max time kernel
    158s
  • max time network
    161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    14/04/2022, 16:37

General

  • Target
    PURCHASE ORDER-PDF_SCAN-COPY.exe
  • Size 814KB
  • Sample220414-t4shhadcfl
  • SHA256 2ee32fd5fafe174b2fdfa8dfd614686e9d8bf0552ff8ee78a3a1460566619769
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • formbook

Version
  • 4.1

Campaign
  • o27j

Decoy
  • catchakiller.net

  • nansatsu-meguri.com

  • torshowroom.com

  • loglog.company

  • diabetvn.online

  • pernie.digital

  • shopblodie.com

  • suzettedavidrealtor.com

  • 892uc.com

  • behlfamily.com

  • crazeekandee.com

  • internationalestimatings.com

  • afifurnishing.com

  • bjsalt2fen.com

  • tamdietitian.com

  • lo-nen.com

  • nanjinghu.com

  • dcato.xyz

  • right-on-target-store.com

  • xn--399a9jk03ai6p.com

Signatures

  • Formbook

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

  • Formbook Payload 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.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Suspicious behavior: EnumeratesProcesses 46 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2688
    • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER-PDF_SCAN-COPY.exe
      "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER-PDF_SCAN-COPY.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2072
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\kalCeu.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1004
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kalCeu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3560.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4764
      • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER-PDF_SCAN-COPY.exe
        "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER-PDF_SCAN-COPY.exe"
        3⤵
          PID:3240
        • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER-PDF_SCAN-COPY.exe
          "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER-PDF_SCAN-COPY.exe"
          3⤵
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          PID:1552
      • C:\Windows\SysWOW64\ipconfig.exe
        "C:\Windows\SysWOW64\ipconfig.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Gathers network information
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1912
        • C:\Windows\SysWOW64\cmd.exe
          /c del "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER-PDF_SCAN-COPY.exe"
          3⤵
            PID:3512

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            tmp3560.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\tmp3560.tmp
            • Size 1KB
            • SHA256 816cc4e028611fd7f531fa67106e495c00cb5580d48e073c9b39618b1c85a80b
            • MD5 SHA1 SHA512

            memory/1004-139-0x0000000005120000-0x0000000005156000-memory.dmp

            memory/1004-141-0x0000000005830000-0x0000000005E58000-memory.dmp

            memory/1004-164-0x0000000007C00000-0x0000000007C0E000-memory.dmp

            memory/1004-160-0x0000000007C50000-0x0000000007CE6000-memory.dmp

            memory/1004-158-0x0000000007A40000-0x0000000007A4A000-memory.dmp

            memory/1004-157-0x00000000079D0000-0x00000000079EA000-memory.dmp

            memory/1004-152-0x00000000051F5000-0x00000000051F7000-memory.dmp

            memory/1004-165-0x0000000007D10000-0x0000000007D2A000-memory.dmp

            memory/1004-156-0x0000000008010000-0x000000000868A000-memory.dmp

            memory/1004-166-0x0000000007CF0000-0x0000000007CF8000-memory.dmp

            memory/1004-155-0x0000000006C90000-0x0000000006CAE000-memory.dmp

            memory/1004-154-0x0000000071030000-0x000000007107C000-memory.dmp

            memory/1004-145-0x00000000055F0000-0x0000000005612000-memory.dmp

            memory/1004-146-0x0000000005FD0000-0x0000000006036000-memory.dmp

            memory/1004-147-0x00000000066D0000-0x00000000066EE000-memory.dmp

            memory/1004-153-0x0000000007890000-0x00000000078C2000-memory.dmp

            memory/1552-150-0x0000000001840000-0x0000000001854000-memory.dmp

            memory/1552-144-0x0000000000400000-0x000000000042F000-memory.dmp

            memory/1552-149-0x0000000001860000-0x0000000001BAA000-memory.dmp

            memory/1912-161-0x00000000007C0000-0x00000000007CB000-memory.dmp

            memory/1912-168-0x0000000001860000-0x00000000018F3000-memory.dmp

            memory/1912-167-0x0000000001910000-0x0000000001C5A000-memory.dmp

            memory/1912-162-0x0000000001230000-0x000000000125F000-memory.dmp

            memory/2072-136-0x0000000008B00000-0x0000000008B66000-memory.dmp

            memory/2072-135-0x0000000004EF0000-0x0000000004EFA000-memory.dmp

            memory/2072-131-0x0000000000470000-0x0000000000542000-memory.dmp

            memory/2072-134-0x0000000005050000-0x00000000050EC000-memory.dmp

            memory/2072-133-0x0000000004F10000-0x0000000004FA2000-memory.dmp

            memory/2072-132-0x00000000054C0000-0x0000000005A64000-memory.dmp

            memory/2688-151-0x00000000084A0000-0x0000000008563000-memory.dmp

            memory/2688-169-0x0000000008570000-0x0000000008672000-memory.dmp