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
    300s
  • max time network
    298s
  • platform
    windows7_x64
  • resource
    win7-20240319-en
  • resource tags

    arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-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.

  • Executes dropped EXE 15 IoCs
  • Loads dropped DLL 64 IoCs
  • UPX packed file 64 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: RenamesItself 52 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\426bc8bac5cb97b5340b0f347cc70024fb5cc64041149ad923c815aedaf17a7a.exe
    "C:\Users\Admin\AppData\Local\Temp\426bc8bac5cb97b5340b0f347cc70024fb5cc64041149ad923c815aedaf17a7a.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Modifies system certificate store
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1260
    • 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:2040
    • 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:2248
    • 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:696
    • 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:2336
    • 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:2640
    • 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:1384
    • 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:1364
    • 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:2024
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      PID:1376
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      PID:2444
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      PID:2512
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      PID:2040
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      PID:1692
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      PID:1716
    • C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe
      "C:\Users\Admin\AppData\Local\00e31655\tor\WebDebugger.exe" -f torrc
      2⤵
      • Executes dropped EXE
      PID:2948

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        cached-certs

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\data\cached-certs
        • Size 20KB
        • SHA256 ff191e1fd0eb2f9cd45d25822a8df2727cd4aa788608926eb373721bb7c6df7b
        • 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.new

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\data\cached-microdescs.new
        • Size 20.2MB
        • SHA256 fbaccb26eae41c59a12d45109da49ede67a839998302da89344e14d692e1cddc
        • MD5 SHA1 SHA512 SSDEEP

        cached-microdescs.new

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\data\cached-microdescs.new
        • Size 5.8MB
        • SHA256 02bbd4a2fcc18eded876aed90ca1f748891ec8d722cb6f094be278c5e30b2a37
        • MD5 SHA1 SHA512 SSDEEP

        state

        • Path C:\Users\Admin\AppData\Local\00e31655\tor\data\state
        • Size 232B
        • SHA256 8ff32995f19cc2c93e64313fee524ed883d2fad1bf8652a188d736b8bb9daf48
        • 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

        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

        WebDebugger.exe

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

        libevent-2-1-6.dll

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

        libssl-1_1.dll

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

        libssp-0.dll

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

        libwinpthread-1.dll

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

        memory/696-213-0x0000000000960000-0x0000000000D64000-memory.dmp

        memory/696-182-0x0000000074360000-0x000000007462F000-memory.dmp

        memory/696-183-0x0000000074B40000-0x0000000074B89000-memory.dmp

        memory/696-184-0x0000000074830000-0x00000000748F8000-memory.dmp

        memory/696-185-0x0000000074720000-0x000000007482A000-memory.dmp

        memory/696-186-0x0000000074690000-0x0000000074718000-memory.dmp

        memory/696-187-0x0000000074200000-0x00000000742CE000-memory.dmp

        memory/696-188-0x0000000074BB0000-0x0000000074BD4000-memory.dmp

        memory/696-179-0x0000000000960000-0x0000000000D64000-memory.dmp

        memory/696-196-0x0000000000960000-0x0000000000D64000-memory.dmp

        memory/696-205-0x0000000000960000-0x0000000000D64000-memory.dmp

        memory/1260-19-0x0000000003C60000-0x0000000004064000-memory.dmp

        memory/1260-343-0x0000000005680000-0x0000000005A84000-memory.dmp

        memory/1260-300-0x0000000004970000-0x0000000004D74000-memory.dmp

        memory/1260-281-0x0000000004970000-0x0000000004D74000-memory.dmp

        memory/1260-230-0x0000000004970000-0x0000000004D74000-memory.dmp

        memory/1260-311-0x0000000000360000-0x000000000036A000-memory.dmp

        memory/1260-312-0x0000000000360000-0x000000000036A000-memory.dmp

        memory/1260-0-0x0000000000400000-0x0000000000BDB000-memory.dmp

        memory/1260-204-0x0000000004970000-0x0000000004D74000-memory.dmp

        memory/1260-58-0x0000000003C60000-0x0000000004064000-memory.dmp

        memory/1260-45-0x0000000003C60000-0x0000000004064000-memory.dmp

        memory/1260-115-0x0000000004970000-0x0000000004D74000-memory.dmp

        memory/1260-21-0x0000000003C60000-0x0000000004064000-memory.dmp

        memory/1384-363-0x00000000011D0000-0x00000000015D4000-memory.dmp

        memory/1384-348-0x0000000074560000-0x0000000074628000-memory.dmp

        memory/1384-360-0x0000000074C30000-0x0000000074C54000-memory.dmp

        memory/1384-357-0x0000000074380000-0x000000007444E000-memory.dmp

        memory/1384-345-0x0000000074630000-0x00000000748FF000-memory.dmp

        memory/1384-354-0x0000000074B00000-0x0000000074B88000-memory.dmp

        memory/1384-347-0x0000000074B90000-0x0000000074BD9000-memory.dmp

        memory/1384-351-0x0000000074450000-0x000000007455A000-memory.dmp

        memory/2040-59-0x0000000000320000-0x0000000000724000-memory.dmp

        memory/2040-27-0x0000000074B90000-0x0000000074BD9000-memory.dmp

        memory/2040-61-0x0000000074B90000-0x0000000074BD9000-memory.dmp

        memory/2040-60-0x0000000074630000-0x00000000748FF000-memory.dmp

        memory/2040-62-0x0000000074560000-0x0000000074628000-memory.dmp

        memory/2040-46-0x0000000000320000-0x0000000000724000-memory.dmp

        memory/2040-24-0x0000000074630000-0x00000000748FF000-memory.dmp

        memory/2040-63-0x0000000074450000-0x000000007455A000-memory.dmp

        memory/2040-30-0x0000000074560000-0x0000000074628000-memory.dmp

        memory/2040-33-0x0000000074450000-0x000000007455A000-memory.dmp

        memory/2040-107-0x0000000000320000-0x0000000000724000-memory.dmp

        memory/2040-99-0x0000000000320000-0x0000000000724000-memory.dmp

        memory/2040-91-0x0000000000320000-0x0000000000724000-memory.dmp

        memory/2040-83-0x0000000000320000-0x0000000000724000-memory.dmp

        memory/2040-65-0x0000000074380000-0x000000007444E000-memory.dmp

        memory/2040-64-0x0000000074B00000-0x0000000074B88000-memory.dmp

        memory/2040-20-0x0000000000320000-0x0000000000724000-memory.dmp

        memory/2040-39-0x0000000074380000-0x000000007444E000-memory.dmp

        memory/2040-41-0x0000000074C30000-0x0000000074C54000-memory.dmp

        memory/2040-36-0x0000000074B00000-0x0000000074B88000-memory.dmp

        memory/2248-125-0x0000000074630000-0x00000000748FF000-memory.dmp

        memory/2248-131-0x0000000000320000-0x0000000000724000-memory.dmp

        memory/2248-134-0x0000000074630000-0x00000000748FF000-memory.dmp

        memory/2248-137-0x0000000074B90000-0x0000000074BD9000-memory.dmp

        memory/2248-140-0x0000000074560000-0x0000000074628000-memory.dmp

        memory/2248-149-0x0000000074C30000-0x0000000074C54000-memory.dmp

        memory/2248-143-0x0000000074450000-0x000000007455A000-memory.dmp

        memory/2248-145-0x0000000074B00000-0x0000000074B88000-memory.dmp

        memory/2248-147-0x0000000074380000-0x000000007444E000-memory.dmp

        memory/2336-262-0x0000000074360000-0x000000007462F000-memory.dmp

        memory/2336-250-0x0000000074690000-0x0000000074718000-memory.dmp

        memory/2336-239-0x0000000074360000-0x000000007462F000-memory.dmp

        memory/2336-241-0x0000000074B40000-0x0000000074B89000-memory.dmp

        memory/2336-244-0x0000000074830000-0x00000000748F8000-memory.dmp

        memory/2336-247-0x0000000074720000-0x000000007482A000-memory.dmp

        memory/2336-253-0x0000000074200000-0x00000000742CE000-memory.dmp

        memory/2336-256-0x0000000074BB0000-0x0000000074BD4000-memory.dmp

        memory/2336-258-0x0000000000960000-0x0000000000D64000-memory.dmp

        memory/2336-263-0x0000000074B40000-0x0000000074B89000-memory.dmp

        memory/2336-264-0x0000000074830000-0x00000000748F8000-memory.dmp

        memory/2640-282-0x00000000011D0000-0x00000000015D4000-memory.dmp

        memory/2640-310-0x0000000074630000-0x00000000748FF000-memory.dmp

        memory/2640-309-0x00000000011D0000-0x00000000015D4000-memory.dmp

        memory/2640-283-0x0000000074630000-0x00000000748FF000-memory.dmp

        memory/2640-284-0x0000000074B90000-0x0000000074BD9000-memory.dmp

        memory/2640-285-0x0000000074560000-0x0000000074628000-memory.dmp

        memory/2640-289-0x0000000074380000-0x000000007444E000-memory.dmp

        memory/2640-288-0x0000000074C30000-0x0000000074C54000-memory.dmp

        memory/2640-287-0x0000000074B00000-0x0000000074B88000-memory.dmp

        memory/2640-286-0x0000000074450000-0x000000007455A000-memory.dmp