Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250313-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/03/2025, 15:43

General

  • Target

    ea4fe51e13f6ab1785535b32345f69ef110e21981bf7dbb09ce02c0bdec1e43c.exe

  • Size

    616KB

  • MD5

    33597eea937de9fc85c91fc86d4081da

  • SHA1

    221c42c79cb047ade2346e1da635a1ac359f06ef

  • SHA256

    ea4fe51e13f6ab1785535b32345f69ef110e21981bf7dbb09ce02c0bdec1e43c

  • SHA512

    7dab2e8b3b8852cbe61e6f17c6adc67b1c2662e3f1a4178644d6dd6479be6c549442fd1598123c1f08c13417d647a7dd6d9f530eeff31026d6cecfea04d965f9

  • SSDEEP

    12288:73jM8fLuh/ABkePJNbT3y1UkuEtnrCuk3aMVa:L7faAimNbjkxtnrCzVa

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

3nop

Decoy

subur88wap.sbs

tyai1.top

skillbeast.site

kcclassiccars.net

lghomes.net

eijanno.cyou

work-in-usa-60100.bond

268chill.store

bharatwin.biz

cakjitu01.xyz

misafert.xyz

hiretemp.net

lvekz-onearmed.top

amanda-manopo.info

seo-companies22.online

casinowalletth.net

maynrson.monster

bewizi.com

thedronetechhub.shop

car-insurance-93947.bond

Signatures

  • Formbook

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

  • Formbook family
  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Formbook payload 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 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 14 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 7 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:3424
    • C:\Users\Admin\AppData\Local\Temp\ea4fe51e13f6ab1785535b32345f69ef110e21981bf7dbb09ce02c0bdec1e43c.exe
      "C:\Users\Admin\AppData\Local\Temp\ea4fe51e13f6ab1785535b32345f69ef110e21981bf7dbb09ce02c0bdec1e43c.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:760
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c ping 127.0.0.1 -n 9 > nul && REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe,"
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Suspicious use of WriteProcessMemory
        PID:696
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1 -n 9
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:5684
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe,"
          4⤵
          • Modifies WinLogon for persistence
          • System Location Discovery: System Language Discovery
          PID:3320
      • C:\Users\Admin\AppData\Local\Temp\skype.exe
        "C:\Users\Admin\AppData\Local\Temp\skype.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4700
        • C:\Windows\SysWOW64\cmd.exe
          "cmd" /c ping 127.0.0.1 -n 7 > nul && REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe,"
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:1292
          • C:\Windows\SysWOW64\PING.EXE
            ping 127.0.0.1 -n 7
            5⤵
            • System Location Discovery: System Language Discovery
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:4444
          • C:\Windows\SysWOW64\reg.exe
            REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe,"
            5⤵
            • Modifies WinLogon for persistence
            • System Location Discovery: System Language Discovery
            PID:5292
        • C:\Windows\SysWOW64\cmd.exe
          "cmd" /c ping 127.0.0.1 -n 15 > nul && copy "C:\Users\Admin\AppData\Local\Temp\skype.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe" && ping 127.0.0.1 -n 15 > nul && "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe"
          4⤵
          • Drops startup file
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:4192
          • C:\Windows\SysWOW64\PING.EXE
            ping 127.0.0.1 -n 15
            5⤵
            • System Location Discovery: System Language Discovery
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:4904
          • C:\Windows\SysWOW64\PING.EXE
            ping 127.0.0.1 -n 15
            5⤵
            • System Location Discovery: System Language Discovery
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:4372
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe
            "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2876
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
              6⤵
              • Suspicious use of SetThreadContext
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of AdjustPrivilegeToken
              PID:3796
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\SysWOW64\msiexec.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5628
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1952

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\skype.exe.log

    Filesize

    1KB

    MD5

    bfd425f352e735df3262cf2f7ecef0c0

    SHA1

    ec1143a8e10e9f9a868fbd401165cda5b1d4cf58

    SHA256

    c01dce3be794873cd4c0b4597e5c071baa4e5b88e15c61dcadeeb9f6a9821ab5

    SHA512

    744911b6d8e79664b9ef490524da292b33958254df0ed78637295abe478e418c530dec91199eb71f9190b32f6f66fc2c61a1b56a9ad802f1b5020270e78da07c

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\skype\skype.exe

    Filesize

    616KB

    MD5

    33597eea937de9fc85c91fc86d4081da

    SHA1

    221c42c79cb047ade2346e1da635a1ac359f06ef

    SHA256

    ea4fe51e13f6ab1785535b32345f69ef110e21981bf7dbb09ce02c0bdec1e43c

    SHA512

    7dab2e8b3b8852cbe61e6f17c6adc67b1c2662e3f1a4178644d6dd6479be6c549442fd1598123c1f08c13417d647a7dd6d9f530eeff31026d6cecfea04d965f9

  • memory/760-6-0x00000000054A0000-0x0000000005532000-memory.dmp

    Filesize

    584KB

  • memory/760-3-0x0000000074BC0000-0x0000000075370000-memory.dmp

    Filesize

    7.7MB

  • memory/760-4-0x0000000004EE0000-0x0000000004F06000-memory.dmp

    Filesize

    152KB

  • memory/760-5-0x00000000058B0000-0x0000000005E54000-memory.dmp

    Filesize

    5.6MB

  • memory/760-2-0x0000000004FF0000-0x000000000508C000-memory.dmp

    Filesize

    624KB

  • memory/760-7-0x0000000005440000-0x000000000544A000-memory.dmp

    Filesize

    40KB

  • memory/760-8-0x0000000007130000-0x000000000765C000-memory.dmp

    Filesize

    5.2MB

  • memory/760-10-0x0000000074BC0000-0x0000000075370000-memory.dmp

    Filesize

    7.7MB

  • memory/760-0-0x0000000074BCE000-0x0000000074BCF000-memory.dmp

    Filesize

    4KB

  • memory/760-1-0x0000000000550000-0x00000000005F0000-memory.dmp

    Filesize

    640KB

  • memory/2876-23-0x0000000009F00000-0x0000000009F06000-memory.dmp

    Filesize

    24KB

  • memory/2876-22-0x00000000078D0000-0x00000000078EA000-memory.dmp

    Filesize

    104KB

  • memory/3424-32-0x0000000007810000-0x0000000007952000-memory.dmp

    Filesize

    1.3MB

  • memory/3796-24-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/4700-15-0x0000000074BC0000-0x0000000075370000-memory.dmp

    Filesize

    7.7MB

  • memory/4700-13-0x0000000074BC0000-0x0000000075370000-memory.dmp

    Filesize

    7.7MB

  • memory/4700-12-0x0000000074BC0000-0x0000000075370000-memory.dmp

    Filesize

    7.7MB

  • memory/4700-11-0x0000000074BC0000-0x0000000075370000-memory.dmp

    Filesize

    7.7MB

  • memory/5628-26-0x00000000000E0000-0x00000000000F2000-memory.dmp

    Filesize

    72KB

  • memory/5628-27-0x00000000000E0000-0x00000000000F2000-memory.dmp

    Filesize

    72KB

  • memory/5628-29-0x00000000000E0000-0x00000000000F2000-memory.dmp

    Filesize

    72KB

  • memory/5628-30-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB