Analysis

  • max time kernel
    154s
  • max time network
    159s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    05-11-2021 12:40

General

  • Target

    26C934B5450A2E29B15806DA4C71D01BA6AE2C98D4F18.exe

  • Size

    229KB

  • MD5

    00a96cad09cacccc65e205f4784df743

  • SHA1

    9502ca9bde31d8de80e0ef7f087ad10bbcaacb0f

  • SHA256

    26c934b5450a2e29b15806da4c71d01ba6ae2c98d4f18538909807f6d78b2fb6

  • SHA512

    08ba1be57531546d41083f77da20fd71d72797e7dd83c066305c931745cc2c1bffa2e2d342b8878a3bca1838e290ce4f54515a6c540871df78a6bde16564089d

Malware Config

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 3 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\26C934B5450A2E29B15806DA4C71D01BA6AE2C98D4F18.exe
    "C:\Users\Admin\AppData\Local\Temp\26C934B5450A2E29B15806DA4C71D01BA6AE2C98D4F18.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4260
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Enc.exe
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Enc.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2752
      • C:\Users\Admin\AppData\Roaming\svchost.exe
        "C:\Users\Admin\AppData\Roaming\svchost.exe"
        3⤵
        • Executes dropped EXE
        • Drops startup file
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3964
        • C:\Windows\SYSTEM32\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\svchost.exe" "svchost.exe" ENABLE
          4⤵
            PID:2100
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\PGDOY8~1.EXE
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\PGDOY8~1.EXE
        2⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious use of SetWindowsHookEx
        PID:4332
    • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
      "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
      1⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1040
    • C:\Windows\system32\browser_broker.exe
      C:\Windows\system32\browser_broker.exe -Embedding
      1⤵
      • Modifies Internet Explorer settings
      PID:1212
    • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
      "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
      1⤵
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4148
    • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
      "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
      1⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      PID:4908
    • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
      "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
      1⤵
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      PID:1084

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Modify Existing Service

    1
    T1031

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    2
    T1112

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Enc.exe
      MD5

      087bc808101d91ccff873cf7f64d6105

      SHA1

      82fdb175117ea1861b8927de4884286a636c3446

      SHA256

      5075af9951da01032aeda1dbbf3e4fa85a2e0a7c30eea47bb4743254455d6768

      SHA512

      9841aae5cfa65651652b6195987704f2f0773dd729e87be1b5e81fd56ee28f0e2f538e6d15d99e859886be4493e97412387c29ea6f07a14faa8e713058140443

    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Enc.exe
      MD5

      087bc808101d91ccff873cf7f64d6105

      SHA1

      82fdb175117ea1861b8927de4884286a636c3446

      SHA256

      5075af9951da01032aeda1dbbf3e4fa85a2e0a7c30eea47bb4743254455d6768

      SHA512

      9841aae5cfa65651652b6195987704f2f0773dd729e87be1b5e81fd56ee28f0e2f538e6d15d99e859886be4493e97412387c29ea6f07a14faa8e713058140443

    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\PGDOY8~1.EXE
      MD5

      47e96ccf6691d77758d5f2f1bcd330a8

      SHA1

      06054bbfafebfced7940e31e39c2fb6da459a141

      SHA256

      0c250147c9ee8f6fce6ba6cc29d19654d084f908433976e19d6208090d218a85

      SHA512

      104121b1c3b533d497f523ac38076dee925fcd5cdbd0b7814934e1de9d1177d77f747b273c1b3e5af87848f5a3036c70eb745ee0d405062dea1b061ad6be49ef

    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\PGDOY8~1.EXE
      MD5

      47e96ccf6691d77758d5f2f1bcd330a8

      SHA1

      06054bbfafebfced7940e31e39c2fb6da459a141

      SHA256

      0c250147c9ee8f6fce6ba6cc29d19654d084f908433976e19d6208090d218a85

      SHA512

      104121b1c3b533d497f523ac38076dee925fcd5cdbd0b7814934e1de9d1177d77f747b273c1b3e5af87848f5a3036c70eb745ee0d405062dea1b061ad6be49ef

    • C:\Users\Admin\AppData\Roaming\svchost.exe
      MD5

      087bc808101d91ccff873cf7f64d6105

      SHA1

      82fdb175117ea1861b8927de4884286a636c3446

      SHA256

      5075af9951da01032aeda1dbbf3e4fa85a2e0a7c30eea47bb4743254455d6768

      SHA512

      9841aae5cfa65651652b6195987704f2f0773dd729e87be1b5e81fd56ee28f0e2f538e6d15d99e859886be4493e97412387c29ea6f07a14faa8e713058140443

    • C:\Users\Admin\AppData\Roaming\svchost.exe
      MD5

      087bc808101d91ccff873cf7f64d6105

      SHA1

      82fdb175117ea1861b8927de4884286a636c3446

      SHA256

      5075af9951da01032aeda1dbbf3e4fa85a2e0a7c30eea47bb4743254455d6768

      SHA512

      9841aae5cfa65651652b6195987704f2f0773dd729e87be1b5e81fd56ee28f0e2f538e6d15d99e859886be4493e97412387c29ea6f07a14faa8e713058140443

    • memory/2100-138-0x0000000000000000-mapping.dmp
    • memory/2752-121-0x0000000002130000-0x0000000002132000-memory.dmp
      Filesize

      8KB

    • memory/2752-118-0x0000000000000000-mapping.dmp
    • memory/3964-133-0x0000000002A02000-0x0000000002A03000-memory.dmp
      Filesize

      4KB

    • memory/3964-122-0x0000000000000000-mapping.dmp
    • memory/4332-128-0x0000000000E70000-0x0000000000E71000-memory.dmp
      Filesize

      4KB

    • memory/4332-131-0x00000000080E0000-0x00000000080E1000-memory.dmp
      Filesize

      4KB

    • memory/4332-132-0x0000000007C80000-0x0000000007C81000-memory.dmp
      Filesize

      4KB

    • memory/4332-130-0x0000000005780000-0x00000000057EB000-memory.dmp
      Filesize

      428KB

    • memory/4332-134-0x0000000007C50000-0x0000000007C51000-memory.dmp
      Filesize

      4KB

    • memory/4332-135-0x0000000005850000-0x0000000005851000-memory.dmp
      Filesize

      4KB

    • memory/4332-136-0x0000000005851000-0x0000000005852000-memory.dmp
      Filesize

      4KB

    • memory/4332-137-0x0000000005852000-0x0000000005853000-memory.dmp
      Filesize

      4KB

    • memory/4332-125-0x0000000000000000-mapping.dmp