Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-en-20211104
  • submitted
    07-11-2021 01:37

General

  • Target

    71078D7CF6428403D8E6298613B1D2932D16129A0E033.exe

  • Size

    222KB

  • MD5

    9ba09fe66a6c0f30ccc1800487e14a33

  • SHA1

    56a97a459acf4cd6403eaa174944f1d1db7957c6

  • SHA256

    71078d7cf6428403d8e6298613b1d2932d16129a0e033f0c008abd7fb194ba80

  • SHA512

    88679b1b788741d52c1a2d443fe4906231d1c7b7aa475bf1b22465d1e51001902f9d42aebc74680217cc69ecb79dbe1bad1e4962452b6416ae8071e6feb310b1

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

180721

C2

185.222.57.203:2282

Mutex

866d16940c2b513b37047e4f825bb8ff

Attributes
  • reg_key

    866d16940c2b513b37047e4f825bb8ff

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

    suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

  • Executes dropped EXE 2 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\71078D7CF6428403D8E6298613B1D2932D16129A0E033.exe
    "C:\Users\Admin\AppData\Local\Temp\71078D7CF6428403D8E6298613B1D2932D16129A0E033.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:292
    • C:\Users\Admin\AppData\Local\Temp\71078D7CF6428403D8E6298613B1D2932D16129A0E033.exe
      C:\Users\Admin\AppData\Local\Temp\71078D7CF6428403D8E6298613B1D2932D16129A0E033.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:572
      • C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1568
        • C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe
          4⤵
          • Executes dropped EXE
          • Drops startup file
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1088
          • C:\Windows\SysWOW64\netsh.exe
            netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe" "svchost.exe" ENABLE
            5⤵
              PID:1724

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      MD5

      9ba09fe66a6c0f30ccc1800487e14a33

      SHA1

      56a97a459acf4cd6403eaa174944f1d1db7957c6

      SHA256

      71078d7cf6428403d8e6298613b1d2932d16129a0e033f0c008abd7fb194ba80

      SHA512

      88679b1b788741d52c1a2d443fe4906231d1c7b7aa475bf1b22465d1e51001902f9d42aebc74680217cc69ecb79dbe1bad1e4962452b6416ae8071e6feb310b1

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

      MD5

      9ba09fe66a6c0f30ccc1800487e14a33

      SHA1

      56a97a459acf4cd6403eaa174944f1d1db7957c6

      SHA256

      71078d7cf6428403d8e6298613b1d2932d16129a0e033f0c008abd7fb194ba80

      SHA512

      88679b1b788741d52c1a2d443fe4906231d1c7b7aa475bf1b22465d1e51001902f9d42aebc74680217cc69ecb79dbe1bad1e4962452b6416ae8071e6feb310b1

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

      MD5

      9ba09fe66a6c0f30ccc1800487e14a33

      SHA1

      56a97a459acf4cd6403eaa174944f1d1db7957c6

      SHA256

      71078d7cf6428403d8e6298613b1d2932d16129a0e033f0c008abd7fb194ba80

      SHA512

      88679b1b788741d52c1a2d443fe4906231d1c7b7aa475bf1b22465d1e51001902f9d42aebc74680217cc69ecb79dbe1bad1e4962452b6416ae8071e6feb310b1

    • \Users\Admin\AppData\Roaming\Microsoft\svchost.exe

      MD5

      9ba09fe66a6c0f30ccc1800487e14a33

      SHA1

      56a97a459acf4cd6403eaa174944f1d1db7957c6

      SHA256

      71078d7cf6428403d8e6298613b1d2932d16129a0e033f0c008abd7fb194ba80

      SHA512

      88679b1b788741d52c1a2d443fe4906231d1c7b7aa475bf1b22465d1e51001902f9d42aebc74680217cc69ecb79dbe1bad1e4962452b6416ae8071e6feb310b1

    • memory/292-57-0x0000000000600000-0x0000000000601000-memory.dmp

      Filesize

      4KB

    • memory/292-58-0x00000000005E0000-0x00000000005FC000-memory.dmp

      Filesize

      112KB

    • memory/292-55-0x0000000000840000-0x0000000000841000-memory.dmp

      Filesize

      4KB

    • memory/572-59-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/572-63-0x0000000076351000-0x0000000076353000-memory.dmp

      Filesize

      8KB

    • memory/572-61-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/572-60-0x000000000040748E-mapping.dmp

    • memory/1088-79-0x0000000004540000-0x0000000004541000-memory.dmp

      Filesize

      4KB

    • memory/1088-73-0x000000000040748E-mapping.dmp

    • memory/1568-65-0x0000000000000000-mapping.dmp

    • memory/1568-70-0x00000000049A0000-0x00000000049A1000-memory.dmp

      Filesize

      4KB

    • memory/1568-68-0x0000000000300000-0x0000000000301000-memory.dmp

      Filesize

      4KB

    • memory/1724-77-0x0000000000000000-mapping.dmp