Resubmissions

17/04/2024, 11:59

240417-n55assfe7110

17/04/2024, 11:59

240417-n5yg9afe7x10

17/04/2024, 11:59

240417-n5rdyaea3610

17/04/2024, 11:59

240417-n5qseaea3510

17/04/2024, 11:59

240417-n5p6wafe6y10

17/04/2024, 06:14

240417-gzcv2aff7510

Analysis

  • max time kernel
    298s
  • max time network
    300s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/04/2024, 06:14

General

  • Target
    426bc8bac5cb97b5340b0f347cc70024fb5cc64041149ad923c815aedaf17a7a.exe
  • Size 7.8MB
  • Sample240417-gzcv2aff75
  • SHA256 426bc8bac5cb97b5340b0f347cc70024fb5cc64041149ad923c815aedaf17a7a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • bitrat

Version
  • 1.38

C2
  • sef7qgz77oamhl5gimls62lekmig5ormf6dcgftblhaxt2cn7emkbuid.onion:80

Attributes
  • communication_password

    81dc9bdb52d04dc20036dbd8313ed055

  • install_dir

    appdata

  • install_file

    HealthCheck.exe

  • tor_process

    WebDebugger

Signatures

  • BitRAT

    BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

  • ACProtect 1.3x - 1.4x DLL software 7 IoCs

    Detects file using ACProtect software.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 51 IoCs
  • UPX packed file 64 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 5 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: RenamesItself 56 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\426bc8bac5cb97b5340b0f347cc70024fb5cc64041149ad923c815aedaf17a7a.exe
    "C:\Users\Admin\AppData\Local\Temp\426bc8bac5cb97b5340b0f347cc70024fb5cc64041149ad923c815aedaf17a7a.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3904
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:3272
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:4664
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:4600
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:852
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:736
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:4124
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:5084

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        WebDebugger.exe

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
        • Size 973KB
        • SHA256 f9c1d18b50ce7484bf212cb61a9035602cfb90ebdfe66a077b9f6df73196a9f5
        • MD5 SHA1 SHA512 SSDEEP

        cached-certs

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\data\cached-certs
        • Size 20KB
        • SHA256 13396a02b26f3cd464ec86751a2529f71eaad3af1cb4fdc904290fbaa666e2c9
        • MD5 SHA1 SHA512 SSDEEP

        cached-microdesc-consensus.tmp

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\data\cached-microdesc-consensus.tmp
        • Size 2.6MB
        • SHA256 207b7078faa3872b6e17df851fb737a191623d8d37188cfab0725ff6ec226716
        • MD5 SHA1 SHA512 SSDEEP

        cached-microdescs

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\data\cached-microdescs
        • Size 20.2MB
        • SHA256 2ecd685a7093e54b9b3c208f5767492afa43b4cdc0e322271ff10354e7b558d7
        • MD5 SHA1 SHA512 SSDEEP

        cached-microdescs.new

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\data\cached-microdescs.new
        • Size 5.8MB
        • SHA256 f4c5e2648f0941d3f8c8d661a96047c2c570af5fc06f8ac1d92560cb40659ce8
        • MD5 SHA1 SHA512 SSDEEP

        cached-microdescs.new

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\data\cached-microdescs.new
        • Size 7.4MB
        • SHA256 a9b62069f3a23120182a0f1fed972018dc5b64d9f98a98a0c76ae35fd39587a5
        • MD5 SHA1 SHA512 SSDEEP

        state

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\data\state
        • Size 232B
        • SHA256 9c4fd5a67d2dcca09b5771c0723851ccad5efa8f8e8d14c799a18e44b35e53e4
        • MD5 SHA1 SHA512

        state

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\data\state
        • Size 3KB
        • SHA256 8c8dc66c0c3265bae205742d85f65618cbbeda8d46010801778dcafa97dc1d54
        • MD5 SHA1 SHA512

        libcrypto-1_1.dll

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\libcrypto-1_1.dll
        • Size 1.7MB
        • SHA256 c8db0ff0f7047ed91b057005e86ad3a23eae616253313aa047c560d9eb398369
        • MD5 SHA1 SHA512 SSDEEP

        libevent-2-1-6.dll

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\libevent-2-1-6.dll
        • Size 366KB
        • SHA256 b65f9aa0c7912af64bd9b05e9322e994339a11b0c8907e6a6166d7b814bda838
        • MD5 SHA1 SHA512 SSDEEP

        libgcc_s_sjlj-1.dll

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\libgcc_s_sjlj-1.dll
        • Size 286KB
        • SHA256 2922193133dabab5b82088d4e87484e2fac75e9e0c765dacaf22eb5f4f18b0c5
        • MD5 SHA1 SHA512 SSDEEP

        libssl-1_1.dll

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\libssl-1_1.dll
        • Size 439KB
        • SHA256 c4d898b1a4285a45153af9ed88d79aa2a073dcb7225961b6b276b532b4d18b6f
        • MD5 SHA1 SHA512 SSDEEP

        libssp-0.dll

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\libssp-0.dll
        • Size 88KB
        • SHA256 cbb5236d923d4f4baf2f0d2797c72a2cbae42ef7ac0acce786daf5fdc5b456e6
        • MD5 SHA1 SHA512 SSDEEP

        libwinpthread-1.dll

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\libwinpthread-1.dll
        • Size 188KB
        • SHA256 92cfd0277c8781a15a0f17b7aee6cff69631b9606a001101631f04b3381efc4e
        • MD5 SHA1 SHA512 SSDEEP

        torrc

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\torrc
        • Size 157B
        • SHA256 3142e667dd2251755b91092cf15f90c64a1551f725d7a6f07abd0b083a6e6397
        • MD5 SHA1 SHA512

        zlib1.dll

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\zlib1.dll
        • Size 52KB
        • SHA256 8688bd7ca55dcc0c23c429762776a0a43fe5b0332dfd5b79ef74e55d4bbc1183
        • MD5 SHA1 SHA512 SSDEEP

        memory/736-306-0x0000000073D40000-0x0000000073DC8000-memory.dmp

        memory/736-307-0x0000000074100000-0x00000000743CF000-memory.dmp

        memory/736-302-0x0000000073EE0000-0x0000000073FAE000-memory.dmp

        memory/736-305-0x0000000073DD0000-0x0000000073EDA000-memory.dmp

        memory/736-301-0x0000000073FB0000-0x0000000073FD4000-memory.dmp

        memory/736-299-0x0000000074030000-0x00000000740F8000-memory.dmp

        memory/736-331-0x0000000073EE0000-0x0000000073FAE000-memory.dmp

        memory/736-330-0x0000000074030000-0x00000000740F8000-memory.dmp

        memory/736-321-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/736-300-0x0000000073FE0000-0x0000000074029000-memory.dmp

        memory/852-280-0x0000000073E10000-0x0000000073E98000-memory.dmp

        memory/852-278-0x0000000073EA0000-0x0000000073FAA000-memory.dmp

        memory/852-276-0x0000000073FB0000-0x0000000073FD4000-memory.dmp

        memory/852-285-0x0000000074100000-0x00000000743CF000-memory.dmp

        memory/852-268-0x0000000074100000-0x00000000743CF000-memory.dmp

        memory/852-274-0x0000000073FE0000-0x0000000074029000-memory.dmp

        memory/852-273-0x0000000073D40000-0x0000000073E0E000-memory.dmp

        memory/852-270-0x0000000074030000-0x00000000740F8000-memory.dmp

        memory/852-267-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/852-287-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/852-286-0x0000000074030000-0x00000000740F8000-memory.dmp

        memory/3272-47-0x00000000742E0000-0x0000000074329000-memory.dmp

        memory/3272-43-0x0000000073CA0000-0x0000000073F6F000-memory.dmp

        memory/3272-19-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/3272-35-0x0000000074210000-0x00000000742D8000-memory.dmp

        memory/3272-30-0x00000000742E0000-0x0000000074329000-memory.dmp

        memory/3272-39-0x0000000074140000-0x000000007420E000-memory.dmp

        memory/3272-40-0x0000000074080000-0x0000000074108000-memory.dmp

        memory/3272-41-0x0000000073F70000-0x000000007407A000-memory.dmp

        memory/3272-42-0x0000000001DB0000-0x000000000207F000-memory.dmp

        memory/3272-155-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/3272-44-0x0000000074110000-0x0000000074134000-memory.dmp

        memory/3272-46-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/3272-48-0x0000000074210000-0x00000000742D8000-memory.dmp

        memory/3272-54-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/3272-55-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/3272-63-0x0000000001DB0000-0x000000000207F000-memory.dmp

        memory/3272-64-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/3272-86-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/3272-105-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/3272-113-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/3272-129-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/3272-121-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/3904-332-0x0000000073970000-0x00000000739A9000-memory.dmp

        memory/3904-215-0x0000000073900000-0x0000000073939000-memory.dmp

        memory/3904-320-0x0000000074DE0000-0x0000000074E19000-memory.dmp

        memory/3904-1-0x0000000074DE0000-0x0000000074E19000-memory.dmp

        memory/3904-45-0x0000000073970000-0x00000000739A9000-memory.dmp

        memory/3904-319-0x0000000073900000-0x0000000073939000-memory.dmp

        memory/3904-0-0x0000000000400000-0x0000000000BDB000-memory.dmp

        memory/3904-104-0x00000000749A0000-0x00000000749D9000-memory.dmp

        memory/4124-365-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/4600-191-0x0000000073EA0000-0x0000000073FAA000-memory.dmp

        memory/4600-196-0x0000000073D40000-0x0000000073E0E000-memory.dmp

        memory/4600-198-0x0000000001A90000-0x0000000001B18000-memory.dmp

        memory/4600-199-0x0000000074100000-0x00000000743CF000-memory.dmp

        memory/4600-194-0x0000000073E10000-0x0000000073E98000-memory.dmp

        memory/4600-188-0x0000000074030000-0x00000000740F8000-memory.dmp

        memory/4600-269-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/4600-189-0x0000000073FE0000-0x0000000074029000-memory.dmp

        memory/4600-190-0x0000000073FB0000-0x0000000073FD4000-memory.dmp

        memory/4600-225-0x0000000074030000-0x00000000740F8000-memory.dmp

        memory/4600-216-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/4664-157-0x0000000074210000-0x00000000742D8000-memory.dmp

        memory/4664-175-0x0000000073CA0000-0x0000000073F6F000-memory.dmp

        memory/4664-161-0x0000000074110000-0x0000000074134000-memory.dmp

        memory/4664-159-0x00000000742E0000-0x0000000074329000-memory.dmp

        memory/4664-163-0x0000000073F70000-0x000000007407A000-memory.dmp

        memory/4664-174-0x0000000074140000-0x000000007420E000-memory.dmp

        memory/4664-173-0x0000000074210000-0x00000000742D8000-memory.dmp

        memory/4664-165-0x0000000074080000-0x0000000074108000-memory.dmp

        memory/4664-158-0x0000000074140000-0x000000007420E000-memory.dmp

        memory/4664-172-0x00000000009C0000-0x0000000000DC4000-memory.dmp

        memory/4664-156-0x0000000073CA0000-0x0000000073F6F000-memory.dmp

        memory/4664-154-0x00000000009C0000-0x0000000000DC4000-memory.dmp