Analysis

  • max time kernel
    148s
  • max time network
    194s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    22-09-2021 14:32

General

  • Target

    424b1800061eb3534756eada61219882687a8f99d206d300ba7e4696066aaac8.exe

  • Size

    1009KB

  • MD5

    dd50c188aabc9e550fc221de015ddb55

  • SHA1

    068aa881159f72c4454f44f32fb754fc5b88f688

  • SHA256

    424b1800061eb3534756eada61219882687a8f99d206d300ba7e4696066aaac8

  • SHA512

    b63b109c27987c3b873c378707eb983c60b782e7e9a2ec0dafac7130ef17da0c034698aaa025cd6103cc5ba6e6fb4e13240a20c773fb2e7a981eef276e406b36

Score
10/10

Malware Config

Extracted

Family

njrat

Version

0.7.3

Botnet

Limebot3

C2

microsoftdnsbug.duckdns.org:6699

Mutex

Client.exe

Attributes
  • reg_key

    Client.exe

  • splitter

    luffy

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 3 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • autoit_exe 4 IoCs

    AutoIT scripts compiled to PE executables.

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\424b1800061eb3534756eada61219882687a8f99d206d300ba7e4696066aaac8.exe
    "C:\Users\Admin\AppData\Local\Temp\424b1800061eb3534756eada61219882687a8f99d206d300ba7e4696066aaac8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2008
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\SysWOW64\schtasks.exe" /create /tn PnPUnattend /tr "C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe" /sc minute /mo 1 /F
      2⤵
      • Creates scheduled task(s)
      PID:1776
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {DBDB5B7B-D6EB-45FE-A15F-4B59809C32E8} S-1-5-21-2455352368-1077083310-2879168483-1000:QWOCTUPM\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1288
    • C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
      C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1192
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
        3⤵
          PID:1428
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\SysWOW64\schtasks.exe" /create /tn PnPUnattend /tr "C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe" /sc minute /mo 1 /F
          3⤵
          • Creates scheduled task(s)
          PID:516
      • C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
        C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1016
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
          3⤵
            PID:1372
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\SysWOW64\schtasks.exe" /create /tn PnPUnattend /tr "C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe" /sc minute /mo 1 /F
            3⤵
            • Creates scheduled task(s)
            PID:784
        • C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
          C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
          2⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1704
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
            3⤵
              PID:1988

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Execution

        Scheduled Task

        1
        T1053

        Persistence

        Scheduled Task

        1
        T1053

        Privilege Escalation

        Scheduled Task

        1
        T1053

        Discovery

        System Information Discovery

        1
        T1082

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
          MD5

          86978bcaaaa9026ce61cbf959265913f

          SHA1

          013f26b0aa34f001b0099257e0c235065b74ed01

          SHA256

          4dc3bac1021089afe22b56bdecf681fa646c89f7dfbff5903d28bcac48da1dc4

          SHA512

          7974a9d6c90a1ff523ce86a5fb53ca9fdab8322f3a7359f007641dcbbf7bc6604a02c85ee8b754a45116474ceafa831afe5526907983a321c313dd09f517a03b

        • C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
          MD5

          86978bcaaaa9026ce61cbf959265913f

          SHA1

          013f26b0aa34f001b0099257e0c235065b74ed01

          SHA256

          4dc3bac1021089afe22b56bdecf681fa646c89f7dfbff5903d28bcac48da1dc4

          SHA512

          7974a9d6c90a1ff523ce86a5fb53ca9fdab8322f3a7359f007641dcbbf7bc6604a02c85ee8b754a45116474ceafa831afe5526907983a321c313dd09f517a03b

        • C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
          MD5

          86978bcaaaa9026ce61cbf959265913f

          SHA1

          013f26b0aa34f001b0099257e0c235065b74ed01

          SHA256

          4dc3bac1021089afe22b56bdecf681fa646c89f7dfbff5903d28bcac48da1dc4

          SHA512

          7974a9d6c90a1ff523ce86a5fb53ca9fdab8322f3a7359f007641dcbbf7bc6604a02c85ee8b754a45116474ceafa831afe5526907983a321c313dd09f517a03b

        • C:\Users\Admin\CapabilityAccessHandlers\AppVCatalog.exe
          MD5

          86978bcaaaa9026ce61cbf959265913f

          SHA1

          013f26b0aa34f001b0099257e0c235065b74ed01

          SHA256

          4dc3bac1021089afe22b56bdecf681fa646c89f7dfbff5903d28bcac48da1dc4

          SHA512

          7974a9d6c90a1ff523ce86a5fb53ca9fdab8322f3a7359f007641dcbbf7bc6604a02c85ee8b754a45116474ceafa831afe5526907983a321c313dd09f517a03b

        • memory/516-87-0x0000000000000000-mapping.dmp
        • memory/784-101-0x0000000000000000-mapping.dmp
        • memory/1016-88-0x0000000000000000-mapping.dmp
        • memory/1192-74-0x0000000000000000-mapping.dmp
        • memory/1372-100-0x0000000000BB0000-0x0000000000BB1000-memory.dmp
          Filesize

          4KB

        • memory/1372-96-0x0000000000414E6E-mapping.dmp
        • memory/1428-82-0x00000000000A4E6E-mapping.dmp
        • memory/1428-84-0x0000000000090000-0x00000000000AA000-memory.dmp
          Filesize

          104KB

        • memory/1428-83-0x0000000000090000-0x00000000000AA000-memory.dmp
          Filesize

          104KB

        • memory/1428-86-0x0000000000B90000-0x0000000000B91000-memory.dmp
          Filesize

          4KB

        • memory/1428-77-0x0000000000090000-0x00000000000AA000-memory.dmp
          Filesize

          104KB

        • memory/1704-102-0x0000000000000000-mapping.dmp
        • memory/1776-72-0x0000000000000000-mapping.dmp
        • memory/1984-60-0x0000000075AD1000-0x0000000075AD3000-memory.dmp
          Filesize

          8KB

        • memory/1984-69-0x0000000000110000-0x0000000000111000-memory.dmp
          Filesize

          4KB

        • memory/1988-114-0x0000000000B60000-0x0000000000B61000-memory.dmp
          Filesize

          4KB

        • memory/1988-110-0x0000000000414E6E-mapping.dmp
        • memory/2008-71-0x0000000000420000-0x0000000000421000-memory.dmp
          Filesize

          4KB

        • memory/2008-66-0x0000000000414E6E-mapping.dmp
        • memory/2008-61-0x0000000000400000-0x000000000041A000-memory.dmp
          Filesize

          104KB

        • memory/2008-67-0x0000000000400000-0x000000000041A000-memory.dmp
          Filesize

          104KB

        • memory/2008-68-0x0000000000400000-0x000000000041A000-memory.dmp
          Filesize

          104KB