Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    16-06-2022 22:46

General

  • Target

    hello.exe

  • Size

    37KB

  • MD5

    f6578c4f484063121bb63109b543fb95

  • SHA1

    baae4772f958a85f2420a7c112f3b0ee02f962ce

  • SHA256

    c27c8f029c0ce21a116cdb60c78676cac7ea9dd38aab8bf5c394075b407d6f5e

  • SHA512

    882590671a309211271e40665ad0561c2f9474aac477a55dbe79e58122cb4370854641e84a9bd7d2d138eca3bef2d2453bacac501042139a7ec74cd37cacd87c

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

NEXT

C2

109.197.196.135:9991

Mutex

413491cbe232876548b9b7cd8a1b451d

Attributes
  • reg_key

    413491cbe232876548b9b7cd8a1b451d

  • 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)

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

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

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

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

  • suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (File Manager)

    suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (File Manager)

  • suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Get Passwords)

    suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Get Passwords)

  • Executes dropped EXE 5 IoCs
  • Modifies Windows Firewall 1 TTPs 3 IoCs
  • Drops startup file 4 IoCs
  • Loads dropped DLL 5 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Drops autorun.inf file 1 TTPs 3 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 59 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\hello.exe
    "C:\Users\Admin\AppData\Local\Temp\hello.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1160
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\hello.exe" "hello.exe" ENABLE
      2⤵
      • Modifies Windows Firewall
      PID:908
    • C:\Users\Admin\AppData\Local\Temp\tmp8BFB.tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp8BFB.tmp.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1308
      • C:\Users\Admin\AppData\Roaming\dllhost.exe
        "C:\Users\Admin\AppData\Roaming\dllhost.exe"
        3⤵
        • Executes dropped EXE
        • 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:848
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\dllhost.exe" "dllhost.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          PID:1700
    • C:\Users\Admin\AppData\Local\Temp\tmpA1CD.tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmpA1CD.tmp.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1080
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\tmpA1CD.tmp.exe" "tmpA1CD.tmp.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:556
    • C:\Users\Admin\Desktop\MeatSpin-Boost.exe
      "C:\Users\Admin\Desktop\MeatSpin-Boost.exe"
      2⤵
      • Executes dropped EXE
      PID:1536
    • C:\Users\Admin\Desktop\MeatSpin-Boost.exe
      "C:\Users\Admin\Desktop\MeatSpin-Boost.exe"
      2⤵
      • Executes dropped EXE
      PID:568
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x2ec
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1228

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\tmp8BFB.tmp.exe
    Filesize

    37KB

    MD5

    73196f394725a9623d84a512cdddf6ce

    SHA1

    4d24d92f70b2cbce52b1b173162b8f504ee7752f

    SHA256

    ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

    SHA512

    9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

  • C:\Users\Admin\AppData\Local\Temp\tmp8BFB.tmp.exe
    Filesize

    37KB

    MD5

    73196f394725a9623d84a512cdddf6ce

    SHA1

    4d24d92f70b2cbce52b1b173162b8f504ee7752f

    SHA256

    ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

    SHA512

    9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

  • C:\Users\Admin\AppData\Local\Temp\tmpA1CD.tmp.exe
    Filesize

    32KB

    MD5

    00b5c86717162d1d8b22334fe21b9041

    SHA1

    eada1b62b4d7e5ddcbdf57aa1fea6312d218e154

    SHA256

    60411ad95716024ff295b429667ca3363b12a9fa23f795f42ef51609d05b9036

    SHA512

    e6b5563070f56f6c76c103ef56592f52bff2657393983a05364619b374deee919424493fba70c63100c806ad4a98ab81c9db04e1285fe5f31d80ab1131b04a07

  • C:\Users\Admin\AppData\Local\Temp\tmpA1CD.tmp.exe
    Filesize

    32KB

    MD5

    00b5c86717162d1d8b22334fe21b9041

    SHA1

    eada1b62b4d7e5ddcbdf57aa1fea6312d218e154

    SHA256

    60411ad95716024ff295b429667ca3363b12a9fa23f795f42ef51609d05b9036

    SHA512

    e6b5563070f56f6c76c103ef56592f52bff2657393983a05364619b374deee919424493fba70c63100c806ad4a98ab81c9db04e1285fe5f31d80ab1131b04a07

  • 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

  • C:\Users\Admin\Desktop\MeatSpin-Boost.exe
    Filesize

    2.4MB

    MD5

    7fd1b8fbfd95d2781656d41294547529

    SHA1

    efa594f75e2d653499df2d9266f28a6de2ed85be

    SHA256

    8f33534fd04867c7607d980d50e9f8abfed2d70f3fdff3e5514e7cf4539a9a91

    SHA512

    3acab9b8e6b105538a84479fe8542a192b6dbc8f19fc89107a81dd0e2cc6b87f5ae8f49750f7eeee8dd80313ebfbeb9b9f5a7091e0c76ef91e55522ecc72d3f8

  • C:\Users\Admin\Desktop\MeatSpin-Boost.exe
    Filesize

    2.4MB

    MD5

    7fd1b8fbfd95d2781656d41294547529

    SHA1

    efa594f75e2d653499df2d9266f28a6de2ed85be

    SHA256

    8f33534fd04867c7607d980d50e9f8abfed2d70f3fdff3e5514e7cf4539a9a91

    SHA512

    3acab9b8e6b105538a84479fe8542a192b6dbc8f19fc89107a81dd0e2cc6b87f5ae8f49750f7eeee8dd80313ebfbeb9b9f5a7091e0c76ef91e55522ecc72d3f8

  • C:\Users\Admin\Desktop\MeatSpin-Boost.exe
    Filesize

    2.4MB

    MD5

    7fd1b8fbfd95d2781656d41294547529

    SHA1

    efa594f75e2d653499df2d9266f28a6de2ed85be

    SHA256

    8f33534fd04867c7607d980d50e9f8abfed2d70f3fdff3e5514e7cf4539a9a91

    SHA512

    3acab9b8e6b105538a84479fe8542a192b6dbc8f19fc89107a81dd0e2cc6b87f5ae8f49750f7eeee8dd80313ebfbeb9b9f5a7091e0c76ef91e55522ecc72d3f8

  • \Users\Admin\AppData\Local\Temp\tmp8BFB.tmp.exe
    Filesize

    37KB

    MD5

    73196f394725a9623d84a512cdddf6ce

    SHA1

    4d24d92f70b2cbce52b1b173162b8f504ee7752f

    SHA256

    ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

    SHA512

    9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

  • \Users\Admin\AppData\Local\Temp\tmpA1CD.tmp.exe
    Filesize

    32KB

    MD5

    00b5c86717162d1d8b22334fe21b9041

    SHA1

    eada1b62b4d7e5ddcbdf57aa1fea6312d218e154

    SHA256

    60411ad95716024ff295b429667ca3363b12a9fa23f795f42ef51609d05b9036

    SHA512

    e6b5563070f56f6c76c103ef56592f52bff2657393983a05364619b374deee919424493fba70c63100c806ad4a98ab81c9db04e1285fe5f31d80ab1131b04a07

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

    37KB

    MD5

    73196f394725a9623d84a512cdddf6ce

    SHA1

    4d24d92f70b2cbce52b1b173162b8f504ee7752f

    SHA256

    ee4ab4017c6e9c0883b2c1e42d0f0264f178ad2c6416e07d77169fdf94d1b1a4

    SHA512

    9c7d00237665f6a1df06217d156cbf07e499f60a7b4eb807b2df107f7392d710cb2439d524827b50492578c652ba20b81f95e4e0eee9f144330847f041971ed6

  • \Users\Admin\Desktop\MeatSpin-Boost.exe
    Filesize

    2.4MB

    MD5

    7fd1b8fbfd95d2781656d41294547529

    SHA1

    efa594f75e2d653499df2d9266f28a6de2ed85be

    SHA256

    8f33534fd04867c7607d980d50e9f8abfed2d70f3fdff3e5514e7cf4539a9a91

    SHA512

    3acab9b8e6b105538a84479fe8542a192b6dbc8f19fc89107a81dd0e2cc6b87f5ae8f49750f7eeee8dd80313ebfbeb9b9f5a7091e0c76ef91e55522ecc72d3f8

  • \Users\Admin\Desktop\MeatSpin-Boost.exe
    Filesize

    2.4MB

    MD5

    7fd1b8fbfd95d2781656d41294547529

    SHA1

    efa594f75e2d653499df2d9266f28a6de2ed85be

    SHA256

    8f33534fd04867c7607d980d50e9f8abfed2d70f3fdff3e5514e7cf4539a9a91

    SHA512

    3acab9b8e6b105538a84479fe8542a192b6dbc8f19fc89107a81dd0e2cc6b87f5ae8f49750f7eeee8dd80313ebfbeb9b9f5a7091e0c76ef91e55522ecc72d3f8

  • memory/556-78-0x0000000000000000-mapping.dmp
  • memory/568-91-0x0000000000000000-mapping.dmp
  • memory/848-72-0x0000000000000000-mapping.dmp
  • memory/848-77-0x00000000746B0000-0x0000000074C5B000-memory.dmp
    Filesize

    5.7MB

  • memory/848-83-0x00000000746B0000-0x0000000074C5B000-memory.dmp
    Filesize

    5.7MB

  • memory/908-56-0x0000000000000000-mapping.dmp
  • memory/1080-66-0x0000000000000000-mapping.dmp
  • memory/1080-70-0x00000000746B0000-0x0000000074C5B000-memory.dmp
    Filesize

    5.7MB

  • memory/1080-82-0x00000000746B0000-0x0000000074C5B000-memory.dmp
    Filesize

    5.7MB

  • memory/1160-58-0x00000000746B0000-0x0000000074C5B000-memory.dmp
    Filesize

    5.7MB

  • memory/1160-55-0x00000000746B0000-0x0000000074C5B000-memory.dmp
    Filesize

    5.7MB

  • memory/1160-54-0x0000000075581000-0x0000000075583000-memory.dmp
    Filesize

    8KB

  • memory/1308-76-0x00000000746B0000-0x0000000074C5B000-memory.dmp
    Filesize

    5.7MB

  • memory/1308-60-0x0000000000000000-mapping.dmp
  • memory/1308-64-0x00000000746B0000-0x0000000074C5B000-memory.dmp
    Filesize

    5.7MB

  • memory/1536-86-0x0000000000000000-mapping.dmp
  • memory/1536-89-0x000000013FAB0000-0x000000013FD0E000-memory.dmp
    Filesize

    2.4MB

  • memory/1536-90-0x000007FEFBD01000-0x000007FEFBD03000-memory.dmp
    Filesize

    8KB

  • memory/1700-80-0x0000000000000000-mapping.dmp