Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20250211-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250211-enlocale:en-usos:windows10-ltsc 2021-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
  • Downloads MZ/PE file 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 17 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 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\𝙎𝙚𝙩𝙪𝙥.exe
    "C:\Users\Admin\AppData\Local\Temp\𝙎𝙚𝙩𝙪𝙥.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1500
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c expand Pack.bmp Pack.bmp.bat & Pack.bmp.bat
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3960
      • C:\Windows\SysWOW64\expand.exe
        expand Pack.bmp Pack.bmp.bat
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2784
      • C:\Windows\SysWOW64\tasklist.exe
        tasklist
        3⤵
        • Enumerates processes with tasklist
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:4692
      • C:\Windows\SysWOW64\findstr.exe
        findstr /I "opssvc wrsa"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4212
      • C:\Windows\SysWOW64\tasklist.exe
        tasklist
        3⤵
        • Enumerates processes with tasklist
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:3704
      • C:\Windows\SysWOW64\findstr.exe
        findstr "AvastUI AVGUI bdservicehost nsWscSvc ekrn SophosHealth"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3872
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c md 34843
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2432
      • C:\Windows\SysWOW64\extrac32.exe
        extrac32 /Y /E Al.bmp
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3180
      • C:\Windows\SysWOW64\findstr.exe
        findstr /V "bernard" Cleared
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3736
      • 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:4432
      • 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:1760
      • 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:2680
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -exec bypass -f "C:\Users\Admin\AppData\Local\Temp\TH0T12YK3XDD9SKS3XZA.ps1"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:444
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -exec bypass -f "C:\Users\Admin\AppData\Local\Temp\Y0Q7R3PL84MO839SGII8UIO06P3BHKS.ps1"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2308
      • C:\Windows\SysWOW64\choice.exe
        choice /d y /t 5
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2928
  • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
    "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-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
    1⤵
    • System Location Discovery: System Language Discovery
    • System Network Configuration Discovery: Internet Connection Discovery
    PID:1796

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 15KB
        • SHA256 897ddf1b26598ad52324983b92317d2985de2ce11f547173d53e96d86a801dab
        • MD5 SHA1 SHA512 SSDEEP

        Bible.com

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

        Bible.com

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

        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

        TH0T12YK3XDD9SKS3XZA.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\TH0T12YK3XDD9SKS3XZA.ps1
        • Size 3KB
        • SHA256 464507f2c132da0b5aaa45f95372871dd14c42d1a156ac746f602aa41ccfbb2e
        • MD5 SHA1 SHA512

        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

        Y0Q7R3PL84MO839SGII8UIO06P3BHKS.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\Y0Q7R3PL84MO839SGII8UIO06P3BHKS.ps1
        • Size 474B
        • SHA256 300c5bfa2b54a6c48fb592ba9f2a164dc92d796688f3e43112e696e68a09ed88
        • MD5 SHA1 SHA512

        __PSScriptPolicyTest_ihcoq2mp.fzu.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ihcoq2mp.fzu.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        pack.bmp

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

        memory/444-76-0x0000000004870000-0x00000000048A6000-memory.dmp

        memory/444-77-0x0000000004FA0000-0x000000000566A000-memory.dmp

        memory/444-79-0x0000000005770000-0x0000000005792000-memory.dmp

        memory/444-81-0x0000000005880000-0x00000000058E6000-memory.dmp

        memory/444-100-0x00000000058F0000-0x0000000005C47000-memory.dmp

        memory/444-102-0x0000000005F10000-0x0000000005F5C000-memory.dmp

        memory/444-101-0x0000000005EC0000-0x0000000005EDE000-memory.dmp

        memory/2308-80-0x0000000006110000-0x0000000006176000-memory.dmp

        memory/2680-70-0x0000000000840000-0x000000000089F000-memory.dmp

        memory/2680-71-0x0000000000840000-0x000000000089F000-memory.dmp

        memory/2680-72-0x0000000000840000-0x000000000089F000-memory.dmp

        memory/2680-69-0x0000000000840000-0x000000000089F000-memory.dmp

        memory/2680-68-0x0000000000840000-0x000000000089F000-memory.dmp