Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    04-07-2022 12:13

General

  • Target

    jopa.exe

  • Size

    346KB

  • MD5

    c54c1e78c781a6c95919a012c30c0c32

  • SHA1

    9ad3a3a9ba4f5fa997298c893e085dd77f635b0b

  • SHA256

    c4e8a78d7af808b4fe0fa7d8c7da2b2e6a364264621ccf520578c9d5d05baa5a

  • SHA512

    975e318b4c18e9b0590de04e2c3762a7a70ee9313d8335a2bb46b0a1307887aeb52567463542dbcf09c9b35bed3a624bab1b18d43f6beddca1ce9d0384ddee94

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

gay

C2

2.tcp.eu.ngrok.io:11696

Mutex

b40c8069f7901ea328823f37ffd1b3b2

Attributes
  • reg_key

    b40c8069f7901ea328823f37ffd1b3b2

  • splitter

    |'|'|

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 2 IoCs
  • Executes dropped EXE 5 IoCs
  • Modifies Windows Firewall 1 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Drops startup file 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 64 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\jopa.exe
    "C:\Users\Admin\AppData\Local\Temp\jopa.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3192
    • C:\Users\Admin\AppData\Local\Temp\Server.exe
      "C:\Users\Admin\AppData\Local\Temp\Server.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Drops startup file
      • 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:4968
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:452
      • C:\Users\Admin\AppData\Local\Temp\tmpDB32.tmp.exe
        "C:\Users\Admin\AppData\Local\Temp\tmpDB32.tmp.exe"
        3⤵
        • Executes dropped EXE
        PID:4340
    • C:\Users\Admin\AppData\Local\Temp\Seer.exe
      "C:\Users\Admin\AppData\Local\Temp\Seer.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4280
      • C:\Users\Admin\AppData\Roaming\dllhost.exe
        "C:\Users\Admin\AppData\Roaming\dllhost.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Drops startup file
        • Adds Run key to start application
        • Drops autorun.inf file
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3152
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\dllhost.exe" "dllhost.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          PID:756
        • C:\Users\Admin\AppData\Local\Temp\tmpBA0E.tmp.exe
          "C:\Users\Admin\AppData\Local\Temp\tmpBA0E.tmp.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          PID:984
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3684

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

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Replication Through Removable Media

1
T1091

Replay Monitor

Loading Replay Monitor...

Downloads

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

    37KB

    MD5

    73196f394725a9623d84a512cdddf6ce

    SHA1

    4d24d92f70b2cbce52b1b173162b8f504ee7752f

    SHA256

    ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

    SHA512

    9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

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

    37KB

    MD5

    73196f394725a9623d84a512cdddf6ce

    SHA1

    4d24d92f70b2cbce52b1b173162b8f504ee7752f

    SHA256

    ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

    SHA512

    9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

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

    37KB

    MD5

    c416df61c2d1b3d75fa5983e282542ce

    SHA1

    e1a98256b16e7a1666871133091743ee11e4a171

    SHA256

    4a6cc991136caa150891fc6dea2eed91cc9c6b40030bee9120e1b8b504ab570e

    SHA512

    ec0b63312f058e46b1106731a87aca84ffe196b4c88c433df7399611fc51a07518cc77c21764d289eb81a13b095c1505e1685591335103818916f33beba82c77

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

    37KB

    MD5

    c416df61c2d1b3d75fa5983e282542ce

    SHA1

    e1a98256b16e7a1666871133091743ee11e4a171

    SHA256

    4a6cc991136caa150891fc6dea2eed91cc9c6b40030bee9120e1b8b504ab570e

    SHA512

    ec0b63312f058e46b1106731a87aca84ffe196b4c88c433df7399611fc51a07518cc77c21764d289eb81a13b095c1505e1685591335103818916f33beba82c77

  • C:\Users\Admin\AppData\Local\Temp\tmpBA0E.tmp.exe
    Filesize

    397KB

    MD5

    5cc71bb72dfa08129a2d52c5d4304555

    SHA1

    80630df164be23af18e7a2bc3b61d41d95121283

    SHA256

    bceed71f2dd96f73d106bc1f3d81f185a787ad1cddedefb9d2068ffd0b6447dc

    SHA512

    735e3741de37981815ce79367f1c357affc7500c7e5e175bd6b075059a7528688eed7d25736e2e0758cddd6801194389bf96ea25e255424d260f02a94c8d5499

  • C:\Users\Admin\AppData\Local\Temp\tmpBA0E.tmp.exe
    Filesize

    397KB

    MD5

    5cc71bb72dfa08129a2d52c5d4304555

    SHA1

    80630df164be23af18e7a2bc3b61d41d95121283

    SHA256

    bceed71f2dd96f73d106bc1f3d81f185a787ad1cddedefb9d2068ffd0b6447dc

    SHA512

    735e3741de37981815ce79367f1c357affc7500c7e5e175bd6b075059a7528688eed7d25736e2e0758cddd6801194389bf96ea25e255424d260f02a94c8d5499

  • C:\Users\Admin\AppData\Local\Temp\tmpDB32.tmp.exe
    Filesize

    37KB

    MD5

    73196f394725a9623d84a512cdddf6ce

    SHA1

    4d24d92f70b2cbce52b1b173162b8f504ee7752f

    SHA256

    ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

    SHA512

    9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

  • C:\Users\Admin\AppData\Local\Temp\tmpDB32.tmp.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

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

    37KB

    MD5

    73196f394725a9623d84a512cdddf6ce

    SHA1

    4d24d92f70b2cbce52b1b173162b8f504ee7752f

    SHA256

    ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

    SHA512

    9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

  • memory/452-138-0x0000000000000000-mapping.dmp
  • memory/756-145-0x0000000000000000-mapping.dmp
  • memory/984-147-0x0000000000000000-mapping.dmp
  • memory/3152-139-0x0000000000000000-mapping.dmp
  • memory/3152-146-0x00000000729F0000-0x0000000072FA1000-memory.dmp
    Filesize

    5.7MB

  • memory/3152-143-0x00000000729F0000-0x0000000072FA1000-memory.dmp
    Filesize

    5.7MB

  • memory/4280-136-0x00000000729F0000-0x0000000072FA1000-memory.dmp
    Filesize

    5.7MB

  • memory/4280-142-0x00000000729F0000-0x0000000072FA1000-memory.dmp
    Filesize

    5.7MB

  • memory/4280-133-0x0000000000000000-mapping.dmp
  • memory/4340-150-0x0000000000000000-mapping.dmp
  • memory/4340-153-0x00000000729F0000-0x0000000072FA1000-memory.dmp
    Filesize

    5.7MB

  • memory/4340-154-0x00000000729F0000-0x0000000072FA1000-memory.dmp
    Filesize

    5.7MB

  • memory/4968-144-0x00000000729F0000-0x0000000072FA1000-memory.dmp
    Filesize

    5.7MB

  • memory/4968-137-0x00000000729F0000-0x0000000072FA1000-memory.dmp
    Filesize

    5.7MB

  • memory/4968-130-0x0000000000000000-mapping.dmp