Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    04-07-2022 12:18

General

  • Target

    0x000b000000003c9f-55.exe

  • Size

    37KB

  • MD5

    c416df61c2d1b3d75fa5983e282542ce

  • SHA1

    e1a98256b16e7a1666871133091743ee11e4a171

  • SHA256

    4a6cc991136caa150891fc6dea2eed91cc9c6b40030bee9120e1b8b504ab570e

  • SHA512

    ec0b63312f058e46b1106731a87aca84ffe196b4c88c433df7399611fc51a07518cc77c21764d289eb81a13b095c1505e1685591335103818916f33beba82c77

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

NEXT

C2

109.197.196.135:9991

Mutex

413491cbe232876548b9b7cd8a1b451d

Attributes
  • reg_key

    413491cbe232876548b9b7cd8a1b451d

  • splitter

    |'|'|

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • 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)

  • suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Capture)

    suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Capture)

  • ModiLoader Second Stage 3 IoCs
  • Executes dropped EXE 4 IoCs
  • Modifies Windows Firewall 1 TTPs 2 IoCs
  • Drops startup file 4 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Drops autorun.inf file 1 TTPs 5 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0x000b000000003c9f-55.exe
    "C:\Users\Admin\AppData\Local\Temp\0x000b000000003c9f-55.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops autorun.inf file
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1336
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\0x000b000000003c9f-55.exe" "0x000b000000003c9f-55.exe" ENABLE
      2⤵
      • Modifies Windows Firewall
      PID:1304
    • C:\Users\Admin\AppData\Local\Temp\tmp6134.tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp6134.tmp.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1332
      • C:\Users\Admin\AppData\Roaming\dllhost.exe
        "C:\Users\Admin\AppData\Roaming\dllhost.exe"
        3⤵
        • Executes dropped EXE
        • Drops startup file
        • Loads dropped DLL
        • Adds Run key to start application
        • Drops autorun.inf file
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1984
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\dllhost.exe" "dllhost.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          PID:572
        • C:\Users\Admin\AppData\Local\Temp\tmpEF6E.tmp.exe
          "C:\Users\Admin\AppData\Local\Temp\tmpEF6E.tmp.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          PID:1452
    • C:\Users\Admin\AppData\Local\Temp\tmp9011.tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp9011.tmp.exe"
      2⤵
      • Executes dropped EXE
      PID:832
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
      PID:1620

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Replication Through Removable Media

    1
    T1091

    Persistence

    Modify Existing Service

    1
    T1031

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Lateral Movement

    Replication Through Removable Media

    1
    T1091

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp6134.tmp.exe
      Filesize

      37KB

      MD5

      73196f394725a9623d84a512cdddf6ce

      SHA1

      4d24d92f70b2cbce52b1b173162b8f504ee7752f

      SHA256

      ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

      SHA512

      9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

    • C:\Users\Admin\AppData\Local\Temp\tmp6134.tmp.exe
      Filesize

      37KB

      MD5

      73196f394725a9623d84a512cdddf6ce

      SHA1

      4d24d92f70b2cbce52b1b173162b8f504ee7752f

      SHA256

      ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

      SHA512

      9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

    • C:\Users\Admin\AppData\Local\Temp\tmp9011.tmp.exe
      Filesize

      37KB

      MD5

      73196f394725a9623d84a512cdddf6ce

      SHA1

      4d24d92f70b2cbce52b1b173162b8f504ee7752f

      SHA256

      ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

      SHA512

      9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

    • C:\Users\Admin\AppData\Local\Temp\tmp9011.tmp.exe
      Filesize

      37KB

      MD5

      73196f394725a9623d84a512cdddf6ce

      SHA1

      4d24d92f70b2cbce52b1b173162b8f504ee7752f

      SHA256

      ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

      SHA512

      9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

    • C:\Users\Admin\AppData\Local\Temp\tmpEF6E.tmp.exe
      Filesize

      397KB

      MD5

      5cc71bb72dfa08129a2d52c5d4304555

      SHA1

      80630df164be23af18e7a2bc3b61d41d95121283

      SHA256

      bceed71f2dd96f73d106bc1f3d81f185a787ad1cddedefb9d2068ffd0b6447dc

      SHA512

      735e3741de37981815ce79367f1c357affc7500c7e5e175bd6b075059a7528688eed7d25736e2e0758cddd6801194389bf96ea25e255424d260f02a94c8d5499

    • C:\Users\Admin\AppData\Local\Temp\tmpEF6E.tmp.exe
      Filesize

      397KB

      MD5

      5cc71bb72dfa08129a2d52c5d4304555

      SHA1

      80630df164be23af18e7a2bc3b61d41d95121283

      SHA256

      bceed71f2dd96f73d106bc1f3d81f185a787ad1cddedefb9d2068ffd0b6447dc

      SHA512

      735e3741de37981815ce79367f1c357affc7500c7e5e175bd6b075059a7528688eed7d25736e2e0758cddd6801194389bf96ea25e255424d260f02a94c8d5499

    • C:\Users\Admin\AppData\Roaming\dllhost.exe
      Filesize

      37KB

      MD5

      73196f394725a9623d84a512cdddf6ce

      SHA1

      4d24d92f70b2cbce52b1b173162b8f504ee7752f

      SHA256

      ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

      SHA512

      9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

    • C:\Users\Admin\AppData\Roaming\dllhost.exe
      Filesize

      37KB

      MD5

      73196f394725a9623d84a512cdddf6ce

      SHA1

      4d24d92f70b2cbce52b1b173162b8f504ee7752f

      SHA256

      ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

      SHA512

      9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

    • \Users\Admin\AppData\Local\Temp\tmp6134.tmp.exe
      Filesize

      37KB

      MD5

      73196f394725a9623d84a512cdddf6ce

      SHA1

      4d24d92f70b2cbce52b1b173162b8f504ee7752f

      SHA256

      ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

      SHA512

      9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

    • \Users\Admin\AppData\Local\Temp\tmp9011.tmp.exe
      Filesize

      37KB

      MD5

      73196f394725a9623d84a512cdddf6ce

      SHA1

      4d24d92f70b2cbce52b1b173162b8f504ee7752f

      SHA256

      ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

      SHA512

      9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

    • \Users\Admin\AppData\Local\Temp\tmpEF6E.tmp.exe
      Filesize

      397KB

      MD5

      5cc71bb72dfa08129a2d52c5d4304555

      SHA1

      80630df164be23af18e7a2bc3b61d41d95121283

      SHA256

      bceed71f2dd96f73d106bc1f3d81f185a787ad1cddedefb9d2068ffd0b6447dc

      SHA512

      735e3741de37981815ce79367f1c357affc7500c7e5e175bd6b075059a7528688eed7d25736e2e0758cddd6801194389bf96ea25e255424d260f02a94c8d5499

    • \Users\Admin\AppData\Roaming\dllhost.exe
      Filesize

      37KB

      MD5

      73196f394725a9623d84a512cdddf6ce

      SHA1

      4d24d92f70b2cbce52b1b173162b8f504ee7752f

      SHA256

      ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

      SHA512

      9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

    • memory/572-72-0x0000000000000000-mapping.dmp
    • memory/832-86-0x00000000748C0000-0x0000000074E6B000-memory.dmp
      Filesize

      5.7MB

    • memory/832-85-0x00000000748C0000-0x0000000074E6B000-memory.dmp
      Filesize

      5.7MB

    • memory/832-81-0x0000000000000000-mapping.dmp
    • memory/1304-56-0x0000000000000000-mapping.dmp
    • memory/1332-64-0x00000000748C0000-0x0000000074E6B000-memory.dmp
      Filesize

      5.7MB

    • memory/1332-60-0x0000000000000000-mapping.dmp
    • memory/1332-70-0x00000000748C0000-0x0000000074E6B000-memory.dmp
      Filesize

      5.7MB

    • memory/1336-58-0x00000000748C0000-0x0000000074E6B000-memory.dmp
      Filesize

      5.7MB

    • memory/1336-55-0x00000000748C0000-0x0000000074E6B000-memory.dmp
      Filesize

      5.7MB

    • memory/1336-54-0x00000000753B1000-0x00000000753B3000-memory.dmp
      Filesize

      8KB

    • memory/1452-76-0x0000000000000000-mapping.dmp
    • memory/1984-74-0x00000000748C0000-0x0000000074E6B000-memory.dmp
      Filesize

      5.7MB

    • memory/1984-71-0x00000000748C0000-0x0000000074E6B000-memory.dmp
      Filesize

      5.7MB

    • memory/1984-66-0x0000000000000000-mapping.dmp