Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    19-09-2021 22:31

General

  • Target

    Payload.bin.exe

  • Size

    27KB

  • MD5

    c33318247f0f443ed1a25af2f9b76cf0

  • SHA1

    30388f9d86200fec836bd2995f87a66c06cf3d9e

  • SHA256

    c20aa2c35db0a9c2f811241e8ed3e959c5f297c41f11f9ea4d59def9c3219a81

  • SHA512

    6e5562964b36083bf5f5496262fb39b16a78c903e2729f2c982d5906482c33cc5725d14e00998de489f66b69e73c21af15fbc125297ca37cead472e8138b4557

Malware Config

Extracted

Family

njrat

Version

v2.0

Botnet

HacKed

C2

efficient-oil.auto.playit.gg:55457

Mutex

Windows

Attributes
  • reg_key

    Windows

  • splitter

    |-F-|

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 1 IoCs
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 31 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payload.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\Payload.bin.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:664
    • C:\Users\Admin\AppData\Local\Temp\Payload.exe
      "C:\Users\Admin\AppData\Local\Temp\Payload.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      PID:488
    • C:\Windows\SysWOW64\attrib.exe
      attrib +h +r +s "C:\Users\Admin\AppData\Local\Temp\Payload.exe"
      2⤵
      • Views/modifies file attributes
      PID:1104

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Hidden Files and Directories

1
T1158

Defense Evasion

Modify Registry

1
T1112

Hidden Files and Directories

1
T1158

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Payload.exe
    MD5

    c33318247f0f443ed1a25af2f9b76cf0

    SHA1

    30388f9d86200fec836bd2995f87a66c06cf3d9e

    SHA256

    c20aa2c35db0a9c2f811241e8ed3e959c5f297c41f11f9ea4d59def9c3219a81

    SHA512

    6e5562964b36083bf5f5496262fb39b16a78c903e2729f2c982d5906482c33cc5725d14e00998de489f66b69e73c21af15fbc125297ca37cead472e8138b4557

  • C:\Users\Admin\AppData\Local\Temp\Payload.exe
    MD5

    c33318247f0f443ed1a25af2f9b76cf0

    SHA1

    30388f9d86200fec836bd2995f87a66c06cf3d9e

    SHA256

    c20aa2c35db0a9c2f811241e8ed3e959c5f297c41f11f9ea4d59def9c3219a81

    SHA512

    6e5562964b36083bf5f5496262fb39b16a78c903e2729f2c982d5906482c33cc5725d14e00998de489f66b69e73c21af15fbc125297ca37cead472e8138b4557

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk
    MD5

    ccc1eae983999b18b05cdc4a9d39d334

    SHA1

    7f42d03d9a6bc8cdcc25464c97d5e37097772493

    SHA256

    f97ea25cffdfd921e7c81d80fcad6baa7918b643c24d010acfc65601db93e01a

    SHA512

    b2bc86a732c148d38d8c721b469a2159f653c7fd534ab4e3b5fc515c393a8651742e17a872daad6b0c61f8e7cc509fb0881567ac165ba7bdc98697260f879a58

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows.lnk
    MD5

    6e8424fdecfc98f2137488d080139a68

    SHA1

    727de20ac4b5717f0cc33b74499baa8949c5ef9a

    SHA256

    367ca209d93eb5a11e07266f051c2b8bcd3d1c6d347253952cc0e832d855a51b

    SHA512

    f6eec81cabf8b458c16c9df9a2d48dd8d48dce81c857e1806a8d55229058c7d74df6d50f34087a9d1734237ee1a98b14f8bcf0a731cd801fb1ad196dcd7001c7

  • memory/488-115-0x0000000000000000-mapping.dmp
  • memory/488-121-0x0000000002430000-0x0000000002431000-memory.dmp
    Filesize

    4KB

  • memory/664-114-0x0000000002C10000-0x0000000002C11000-memory.dmp
    Filesize

    4KB

  • memory/1104-118-0x0000000000000000-mapping.dmp