Analysis

  • max time kernel
    152s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    11-09-2021 16:46

General

  • Target

    Invoice #09747583900.exe

  • Size

    635KB

  • MD5

    027ed8a97dd1dd28cc73c9edf4ec89ab

  • SHA1

    131efcf3ee4e6f0629027066ab002355c2f20a00

  • SHA256

    81f7a0f726f4001c9e4e7d67ba9ab6c3f45139887dabe78f6e3d04dd2b0557e2

  • SHA512

    0c6b3606b56fe7662895783a1512ca62290697049230433ca645e953218bce1311e5dd970dbb30b0a575ef1e0398e5874d602c9f6313f64e2b245a02ff55d497

Malware Config

Extracted

Family

njrat

Version

v4.0

Botnet

AhKey_000_Sat

C2

cdanger492.duckdns.org:4480

Mutex

Windows

Attributes
  • reg_key

    Windows

  • splitter

    |-F-|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Drops startup file 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Invoice #09747583900.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice #09747583900.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1080
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\Evmpca" /XML "C:\Users\Admin\AppData\Local\Temp\tmp45C7.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1208
    • C:\Users\Admin\AppData\Local\Temp\Invoice #09747583900.exe
      "{path}"
      2⤵
      • Drops startup file
      • Suspicious use of AdjustPrivilegeToken
      PID:1592

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp45C7.tmp

    MD5

    87931a632a997dc10b4539090ebaf71e

    SHA1

    3767b8d7e2d7b2a03dc0ad2699583d49bcf5112e

    SHA256

    9d77e08cec51dfd1d4d5f5c9278c07ffeab3d32a6c731c5374d19bd9d18a1b59

    SHA512

    2bc54cfd18c3bdc895b1e19127a9d3f8aae6796cd82c51f3b2b061c6f64e5176e2a8e9c84af7b2a944fd55b2113e98ea80479cacd7fba319dc7bbe5ceb6d58bc

  • memory/1080-60-0x0000000001040000-0x0000000001041000-memory.dmp

    Filesize

    4KB

  • memory/1080-62-0x0000000000E40000-0x0000000000E92000-memory.dmp

    Filesize

    328KB

  • memory/1080-63-0x0000000000BB0000-0x0000000000BB1000-memory.dmp

    Filesize

    4KB

  • memory/1080-64-0x0000000000380000-0x000000000038E000-memory.dmp

    Filesize

    56KB

  • memory/1080-65-0x0000000005220000-0x0000000005291000-memory.dmp

    Filesize

    452KB

  • memory/1080-66-0x0000000000AE0000-0x0000000000AFD000-memory.dmp

    Filesize

    116KB

  • memory/1208-67-0x0000000000000000-mapping.dmp

  • memory/1592-69-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/1592-70-0x000000000040839E-mapping.dmp

  • memory/1592-71-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/1592-73-0x00000000058D0000-0x00000000058D1000-memory.dmp

    Filesize

    4KB