Analysis

  • max time kernel
    139s
  • max time network
    78s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/01/2024, 02:11

General

  • Target
    41fac0ed95daf15301bb58ac2be439f1.exe
  • Size 1.0MB
  • Sample240106-cmdjksegak
  • SHA256 107fe599373eb273b4bb7a4b7a1bcdd28119aafa4f20ad84023c8d5d59f15618
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks installed software on the system 1 TTPs

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

  • Drops Chrome extension 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41fac0ed95daf15301bb58ac2be439f1.exe
    "C:\Users\Admin\AppData\Local\Temp\41fac0ed95daf15301bb58ac2be439f1.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4696
    • C:\Users\Admin\AppData\Local\Temp\00294823\qwAhCVHdV.exe
      "C:\Users\Admin\AppData\Local\Temp/00294823/qwAhCVHdV.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops Chrome extension
      • Installs/modifies Browser Helper Object
      • Modifies Internet Explorer settings
      • Modifies registry class
      • System policy modification
      PID:3472

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        fxMjk81D.dat

        • Path C:\ProgramData\DowNelooad keeperu\fxMjk81D.dat
        • Size 3KB
        • SHA256 dea1bf843805cbaab0225890c212fef11261f989b1fa2ae5c7e1a0ee5c10bc88
        • MD5 SHA1 SHA512

        fxMjk81D.dll

        • Path C:\ProgramData\DowNelooad keeperu\fxMjk81D.dll
        • Size 17KB
        • SHA256 2a1c6daf0ec5efb68afad54d218222abb5458a7ff363c79a2cf6386fdea000d1
        • MD5 SHA1 SHA512 SSDEEP

        fxMjk81D.dll

        • Path C:\ProgramData\DowNelooad keeperu\fxMjk81D.dll
        • Size 57KB
        • SHA256 6822eca09920a59bc8695b7fce998d7e679c552c86e9892d55a82d47d894c377
        • MD5 SHA1 SHA512 SSDEEP

        TNxkDuYye.js

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\afjeipnapceeodophanfdmikghgddefp\TNxkDuYye.js
        • Size 5KB
        • SHA256 20e46aa1fb48cd043909df09489dfe0699457848729fbacc0cba0928822d827d
        • MD5 SHA1 SHA512 SSDEEP

        background.html

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\afjeipnapceeodophanfdmikghgddefp\background.html
        • Size 146B
        • SHA256 f38959dae15e6352ccc042cac13a281700e247d2aa73d54999e4976a288eee5a
        • MD5 SHA1 SHA512

        content.js

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\afjeipnapceeodophanfdmikghgddefp\content.js
        • Size 197B
        • SHA256 fb01e87250ac9985ed08d97f2f99937a52998ea9faebdc88e4071d6517e1ea6b
        • MD5 SHA1 SHA512

        lsdb.js

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\afjeipnapceeodophanfdmikghgddefp\lsdb.js
        • Size 559B
        • SHA256 e3cf0049af8b9f6cb4f0223ccb8438f4b0c75863684c944450015868a0c45704
        • MD5 SHA1 SHA512

        manifest.json

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\afjeipnapceeodophanfdmikghgddefp\manifest.json
        • Size 510B
        • SHA256 b3a6c9e8162eeedccc573d3379e555e08a3599d4414311546ea8ed1d1907e90f
        • MD5 SHA1 SHA512

        sqlite.js

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\afjeipnapceeodophanfdmikghgddefp\sqlite.js
        • Size 1KB
        • SHA256 20f628e7c28336369df73a8892829c9d2bedbaef13421babb466cca742f54f4b
        • MD5 SHA1 SHA512

        fxMjk81D.dll

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\fxMjk81D.dll
        • Size 22KB
        • SHA256 04cf4faebf81aa30e9a4b061f8c57246ab2255fa8822c35ed915e6e4f2b09656
        • MD5 SHA1 SHA512 SSDEEP

        fxMjk81D.tlb

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\fxMjk81D.tlb
        • Size 2KB
        • SHA256 66fab808188a98ba49d99b723a181aa6626197d50bd2d5e15e076dcbc6fbb2cc
        • MD5 SHA1 SHA512

        fxMjk81D.x64.dll

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\fxMjk81D.x64.dll
        • Size 42KB
        • SHA256 2c24bb8942092bbb6cdf3b3993570ebec25bffdac5a0e2ab2c497cf5632a9ba7
        • MD5 SHA1 SHA512 SSDEEP

        qwAhCVHdV.dat

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\qwAhCVHdV.dat
        • Size 1KB
        • SHA256 7557449fd89975d9b3c61a245be586977163bed38e19df0211854eb013e5cce7
        • MD5 SHA1 SHA512

        qwAhCVHdV.exe

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\qwAhCVHdV.exe
        • Size 35KB
        • SHA256 948ce3eaa10f3222cfe7496caad9ccf86111346b98a1f94630a98739a4181679
        • MD5 SHA1 SHA512 SSDEEP

        qwAhCVHdV.exe

        • Path C:\Users\Admin\AppData\Local\Temp\00294823\qwAhCVHdV.exe
        • Size 23KB
        • SHA256 8c1e4f3f572db86b34372f0ff89652362ac0bfe029b1cde9c37ef20f853752ba
        • MD5 SHA1 SHA512 SSDEEP

        chrome.manifest

        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\i99dxqdw.Admin\extensions\staged\[email protected]\chrome.manifest
        • Size 110B
        • SHA256 7320eff6806d24fc4e89bb204901badf11ed3e89bca5c88be27f526f490aeb46
        • MD5 SHA1 SHA512

        bootstrap.js

        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\mlil8stk.default-release\extensions\staged\[email protected]\bootstrap.js
        • Size 2KB
        • SHA256 a7dfea4bf7e1d46a8b8e64ccfb2cf35017e3a5b350eead26d6671254d2b3c46f
        • MD5 SHA1 SHA512

        bg.js

        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\mlil8stk.default-release\extensions\staged\[email protected]\content\bg.js
        • Size 9KB
        • SHA256 77688c69db6c104a667a5f49683710b54414344f872cb769af58d3afd497549a
        • MD5 SHA1 SHA512 SSDEEP

        install.rdf

        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\mlil8stk.default-release\extensions\staged\[email protected]\install.rdf
        • Size 610B
        • SHA256 f4953bcebc9c889b9ea24c0b227b02f667c7a2918ae2d61929c45583d0eface7
        • MD5 SHA1 SHA512