Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    14/02/2025, 15:35

General

  • Target
    𝙎𝙚𝙩𝙪𝙥.exe
  • Size 69.0MB
  • Sample250214-s1prrssqbx
  • SHA256 e2ba20a7a72a6d83bde9effedcb28c0afd58ed93584c2ecce5a87dd5a1b27e56
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • lumma

C2
  • https://clerarhorizon.cyou/api

Signatures

  • Lumma Stealer, LummaC

    Lumma or LummaC is an infostealer written in C++ first seen in August 2022.

  • Lumma family
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\𝙎𝙚𝙩𝙪𝙥.exe
    "C:\Users\Admin\AppData\Local\Temp\𝙎𝙚𝙩𝙪𝙥.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3008
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c expand Pack.bmp Pack.bmp.bat & Pack.bmp.bat
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2164
      • C:\Windows\SysWOW64\expand.exe
        expand Pack.bmp Pack.bmp.bat
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2448
      • C:\Windows\SysWOW64\tasklist.exe
        tasklist
        3⤵
        • Enumerates processes with tasklist
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2264
      • C:\Windows\SysWOW64\findstr.exe
        findstr /I "opssvc wrsa"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2280
      • C:\Windows\SysWOW64\tasklist.exe
        tasklist
        3⤵
        • Enumerates processes with tasklist
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2396
      • C:\Windows\SysWOW64\findstr.exe
        findstr "AvastUI AVGUI bdservicehost nsWscSvc ekrn SophosHealth"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2400
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c md 34843
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1936
      • C:\Windows\SysWOW64\extrac32.exe
        extrac32 /Y /E Al.bmp
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1992
      • C:\Windows\SysWOW64\findstr.exe
        findstr /V "bernard" Cleared
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2332
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c copy /b 34843\Bible.com + Settle + Attacks + Establishing + Aluminum + Witness + Javascript + Sf + Downloaded + Whale 34843\Bible.com
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2660
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c copy /b ..\Startup.bmp + ..\Heather.bmp + ..\Utility.bmp + ..\Root.bmp + ..\Assumptions.bmp + ..\Reference.bmp + ..\Heater.bmp G
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3016
      • C:\Users\Admin\AppData\Local\Temp\34843\Bible.com
        Bible.com G
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:2532
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2532 -s 1164
          4⤵
          • Loads dropped DLL
          • Program crash
          PID:1532
      • C:\Windows\SysWOW64\choice.exe
        choice /d y /t 5
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2488

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        Bible.com

        • Path C:\Users\Admin\AppData\Local\Temp\34843\Bible.com
        • Size 2KB
        • SHA256 de8da503d226492cef30dc58b5585caf91627a6390cbc7285c04b304b596549f
        • MD5 SHA1 SHA512

        G

        • Path C:\Users\Admin\AppData\Local\Temp\34843\G
        • Size 501KB
        • SHA256 ce52dd6cf4af5be1dda2bbd8c98aaf03fdb1b8649c93ac58c670116708748e30
        • MD5 SHA1 SHA512 SSDEEP

        Al.bmp

        • Path C:\Users\Admin\AppData\Local\Temp\Al.bmp
        • Size 477KB
        • SHA256 a76ecc85245e6d0b4a040968dfa1291cc456a4989235a993d2d3dfd033545983
        • MD5 SHA1 SHA512 SSDEEP

        Aluminum

        • Path C:\Users\Admin\AppData\Local\Temp\Aluminum
        • Size 113KB
        • SHA256 6bf4bb1b11dd9cb31833b8941b0b7e61b92cfac7f0141eed6ada09fb94a4c4fb
        • MD5 SHA1 SHA512 SSDEEP

        Assumptions.bmp

        • Path C:\Users\Admin\AppData\Local\Temp\Assumptions.bmp
        • Size 82KB
        • SHA256 3a56706f4d9604d2ae0c39ba6ce7d7406fe60fd95b9561e8ff0ce0fde6c82dfe
        • MD5 SHA1 SHA512 SSDEEP

        Attacks

        • Path C:\Users\Admin\AppData\Local\Temp\Attacks
        • Size 104KB
        • SHA256 128904bcf91b945a59184bc13fc9fc03019634fd26fb6d431dfcdfeb712fe891
        • MD5 SHA1 SHA512 SSDEEP

        Cleared

        • Path C:\Users\Admin\AppData\Local\Temp\Cleared
        • Size 2KB
        • SHA256 f6011a1a9faaff57cd54b2053e425378c40e699402bba7342deacdd915dc5e80
        • MD5 SHA1 SHA512

        Downloaded

        • Path C:\Users\Admin\AppData\Local\Temp\Downloaded
        • Size 108KB
        • SHA256 f7f393be2c8dfb2378e3b3c4dfa79c96ede404b021ce40fdbb75de1d84cf0b6c
        • MD5 SHA1 SHA512 SSDEEP

        Establishing

        • Path C:\Users\Admin\AppData\Local\Temp\Establishing
        • Size 113KB
        • SHA256 815ddf3e79bcdf848fa133fe2ef77b8ee297ead8d64e6c2412164912f5965d3f
        • MD5 SHA1 SHA512 SSDEEP

        Heater.bmp

        • Path C:\Users\Admin\AppData\Local\Temp\Heater.bmp
        • Size 43KB
        • SHA256 6afcf69fdd5903cdbcd4a074912b6c9c7bf10f1e9b91ef7a146d316230685092
        • MD5 SHA1 SHA512 SSDEEP

        Heather.bmp

        • Path C:\Users\Admin\AppData\Local\Temp\Heather.bmp
        • Size 96KB
        • SHA256 ca1083e92a59299d01e083661125cf84fbd2adbdc442ffd46a84a6c763157b38
        • MD5 SHA1 SHA512 SSDEEP

        Javascript

        • Path C:\Users\Admin\AppData\Local\Temp\Javascript
        • Size 107KB
        • SHA256 8eb473b1c6fa200cef55e67cabfbb9375b227ad53b349a7a74c2e2dd18746940
        • MD5 SHA1 SHA512 SSDEEP

        Reference.bmp

        • Path C:\Users\Admin\AppData\Local\Temp\Reference.bmp
        • Size 59KB
        • SHA256 795e6a7e95fd821aac55f5c26cbc3e108a68eed7ec7a582d6fae98f3b64edbb3
        • MD5 SHA1 SHA512 SSDEEP

        Root.bmp

        • Path C:\Users\Admin\AppData\Local\Temp\Root.bmp
        • Size 68KB
        • SHA256 3a56b4a444e3f172bbfc356e40c3241768c6450397bb981eb8ef22d7a49c07f5
        • MD5 SHA1 SHA512 SSDEEP

        Settle

        • Path C:\Users\Admin\AppData\Local\Temp\Settle
        • Size 83KB
        • SHA256 06a6764a338fca46f0123c46091ce041d39b3bd681330fd0bcece36801632c08
        • MD5 SHA1 SHA512 SSDEEP

        Sf

        • Path C:\Users\Admin\AppData\Local\Temp\Sf
        • Size 105KB
        • SHA256 42c85e90a58dfadc59ef6806e13431b86dce8f5f5583581c8a1f6f6029e17457
        • MD5 SHA1 SHA512 SSDEEP

        Startup.bmp

        • Path C:\Users\Admin\AppData\Local\Temp\Startup.bmp
        • Size 82KB
        • SHA256 bbde4745a805923e78d8aeda23ea3cbf23118cb35a4429253e6b010e70d4f868
        • MD5 SHA1 SHA512 SSDEEP

        Utility.bmp

        • Path C:\Users\Admin\AppData\Local\Temp\Utility.bmp
        • Size 71KB
        • SHA256 6d5a95cb9a9b0b922832985b5e83f36b14785a529cf1c3117c39272ee63e92ee
        • MD5 SHA1 SHA512 SSDEEP

        Whale

        • Path C:\Users\Admin\AppData\Local\Temp\Whale
        • Size 68KB
        • SHA256 161c5a4374790c32f5535db191a22e00b6525fbaa2d3d4390f30ee2ed21ad83d
        • MD5 SHA1 SHA512 SSDEEP

        Witness

        • Path C:\Users\Admin\AppData\Local\Temp\Witness
        • Size 121KB
        • SHA256 e796a2ac03ea9743aca56b12af2458c1e6e608d12bc02fa59225c21088a0ccf8
        • MD5 SHA1 SHA512 SSDEEP

        pack.bmp

        • Path C:\Users\Admin\AppData\Local\Temp\pack.bmp
        • Size 10KB
        • SHA256 cb2b6f46eaa05c6354c2c1978f9a69d930e4e3c55b70a484e03aca804179be3d
        • MD5 SHA1 SHA512 SSDEEP

        Bible.com

        • Path \Users\Admin\AppData\Local\Temp\34843\Bible.com
        • Size 925KB
        • SHA256 1300262a9d6bb6fcbefc0d299cce194435790e70b9c7b4a651e202e90a32fd49
        • MD5 SHA1 SHA512 SSDEEP

        memory/2532-70-0x00000000037B0000-0x000000000380F000-memory.dmp

        memory/2532-69-0x00000000037B0000-0x000000000380F000-memory.dmp

        memory/2532-73-0x00000000037B0000-0x000000000380F000-memory.dmp

        memory/2532-72-0x00000000037B0000-0x000000000380F000-memory.dmp

        memory/2532-71-0x00000000037B0000-0x000000000380F000-memory.dmp