Overview

overview

10

Static

static

5

9775659883...15.exe

windows7_x64

10

9775659883...15.exe

windows10_x64

10

Analysis

  • max time kernel
    155s
  • max time network
    136s
  • platform
    windows10_x64
  • resource
    win10-en
  • submitted
    14-09-2021 06:40

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General

  • Target

    977565988377bf3f44444095ecb38c87432ce4bae2059da4aa75124ef1c3de15.exe

  • Size

    1.4MB

  • MD5

    7692667d5a258ba4cdb84473fb50efdc

  • SHA1

    3102de64a4476befc1684c4595f24ec707472662

  • SHA256

    977565988377bf3f44444095ecb38c87432ce4bae2059da4aa75124ef1c3de15

  • SHA512

    1b365067b03c94bacf8f22b5cc32e7a6b85b6359a215f197e6c4747e956ce409de94a5bc8c543af76e98983516a07d111c35ac66f99f85b3e0b7d6858b2052fb

Score
10/10
njrattest1evasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

Test1

C2

127.0.0.1:1177

Mutex

6bc405af81ea48ffdc111c35dcd0d4b4

Attributes
  • reg_key

    6bc405af81ea48ffdc111c35dcd0d4b4

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 2 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 48 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\977565988377bf3f44444095ecb38c87432ce4bae2059da4aa75124ef1c3de15.exe
    "C:\Users\Admin\AppData\Local\Temp\977565988377bf3f44444095ecb38c87432ce4bae2059da4aa75124ef1c3de15.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3636
    • C:\Users\Admin\AppData\Local\TempServer.exe
      C:\Users\Admin\AppData\Local\TempServer.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3748
      • C:\ProgramData\nimer.exe
        "C:\ProgramData\nimer.exe"
        3⤵
        • Executes dropped EXE
        • Drops startup file
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3900
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\ProgramData\nimer.exe" "nimer.exe" ENABLE
          4⤵
            PID:3632

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    Registry Run Keys / Startup Folder

    1
    T1060

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\ProgramData\nimer.exe
      MD5

      7cbdea2979d0fe2d19b60004bff7007a

      SHA1

      a1448e8d430d1f4a85e537cabb12adcbaf285020

      SHA256

      24425c3e4f7eb4fbfdad529e3e07939e3175a2b7f12c8ea10cb4691c687f03d0

      SHA512

      e2b4b3c22db5f362603bd0e59996e05f33d4f063c48b4cfb06ec05cfcf4034df3e0b4536075b8eb03adce454215850d89cad0b3a9d0e9c0472d9180e90f6e3c5

      Download Submit
    • C:\ProgramData\nimer.exe
      MD5

      7cbdea2979d0fe2d19b60004bff7007a

      SHA1

      a1448e8d430d1f4a85e537cabb12adcbaf285020

      SHA256

      24425c3e4f7eb4fbfdad529e3e07939e3175a2b7f12c8ea10cb4691c687f03d0

      SHA512

      e2b4b3c22db5f362603bd0e59996e05f33d4f063c48b4cfb06ec05cfcf4034df3e0b4536075b8eb03adce454215850d89cad0b3a9d0e9c0472d9180e90f6e3c5

      Download Submit
    • C:\Users\Admin\AppData\Local\TempServer.exe
      MD5

      7cbdea2979d0fe2d19b60004bff7007a

      SHA1

      a1448e8d430d1f4a85e537cabb12adcbaf285020

      SHA256

      24425c3e4f7eb4fbfdad529e3e07939e3175a2b7f12c8ea10cb4691c687f03d0

      SHA512

      e2b4b3c22db5f362603bd0e59996e05f33d4f063c48b4cfb06ec05cfcf4034df3e0b4536075b8eb03adce454215850d89cad0b3a9d0e9c0472d9180e90f6e3c5

      Download Submit
    • C:\Users\Admin\AppData\Local\TempServer.exe
      MD5

      7cbdea2979d0fe2d19b60004bff7007a

      SHA1

      a1448e8d430d1f4a85e537cabb12adcbaf285020

      SHA256

      24425c3e4f7eb4fbfdad529e3e07939e3175a2b7f12c8ea10cb4691c687f03d0

      SHA512

      e2b4b3c22db5f362603bd0e59996e05f33d4f063c48b4cfb06ec05cfcf4034df3e0b4536075b8eb03adce454215850d89cad0b3a9d0e9c0472d9180e90f6e3c5

      Download Submit
    • memory/3632-122-0x0000000000000000-mapping.dmp
      Download
    • memory/3748-115-0x0000000000000000-mapping.dmp
      Download
    • memory/3748-118-0x0000000002440000-0x0000000002441000-memory.dmp
      Filesize

      4KB

      Download
    • memory/3900-119-0x0000000000000000-mapping.dmp
      Download
    • memory/3900-123-0x0000000002E20000-0x0000000002E21000-memory.dmp
      Filesize

      4KB

      Download
    • memory/3900-124-0x0000000002E23000-0x0000000002E25000-memory.dmp
      Filesize

      8KB

      Download