Overview

overview

10

Static

static

a1142dd58b...fb.exe

windows7_x64

10

a1142dd58b...fb.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    21-01-2022 00:57

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General

  • Target

    a1142dd58b658687a9dfc83bfb327dfb.exe

  • Size

    85KB

  • MD5

    a1142dd58b658687a9dfc83bfb327dfb

  • SHA1

    cfc125408dd419fb9a9308e80d3c7091780a417e

  • SHA256

    37fa414b1beac72d5693525b934478c64655b122948b0f5ce9a647b4b08a8554

  • SHA512

    7e8b5caf291c35a29d8e03f8a9ec9950ac91fd9e32519961c0dd1564d8233f9abe76af39029d59ad5c5f71dd95c30e8f9fe201e344bd465a4a93eca7c6a3f18c

Score
10/10
njratfffevasionpersistencesuricatatrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

FFF

C2

4.tcp.ngrok.io:10180

Mutex

d6181fde73b7edf87857576171e471b0

Attributes
  • reg_key

    d6181fde73b7edf87857576171e471b0

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

    suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

    suricata
  • Executes dropped EXE 2 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Drops startup file 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops autorun.inf file 1 TTPs

    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.

  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 34 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a1142dd58b658687a9dfc83bfb327dfb.exe
    "C:\Users\Admin\AppData\Local\Temp\a1142dd58b658687a9dfc83bfb327dfb.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1664
    • C:\Users\Admin\AppData\Local\Temp\1.exe
      "C:\Users\Admin\AppData\Local\Temp\1.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:652
      • C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe
        "C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe"
        3⤵
        • Executes dropped EXE
        • Drops startup file
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1676
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe" "Runtime Broker.exe" ENABLE
          4⤵
            PID:616
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /F /IM taskmgr.exe
            4⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:864

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Replication Through Removable Media

    1
    T1091

    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

    Replication Through Removable Media

    1
    T1091

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\1.exe
      MD5

      e0cacf3b4629d583074d0fc5b436b232

      SHA1

      0755c4b3e43fd01e21e2114b780b1ee802dce051

      SHA256

      352706f0e258388d65b9eff51e4c7965d9b276552ae06878da5b1422607885df

      SHA512

      a6728e2f4a7cd76e2d90725722907a0ea51f2507b67251667181a2ca9052e82685a729b0d00b6b48f01058db69d69e310025dd79bb7bc7bdbe3784d991d49f23

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\1.exe
      MD5

      e0cacf3b4629d583074d0fc5b436b232

      SHA1

      0755c4b3e43fd01e21e2114b780b1ee802dce051

      SHA256

      352706f0e258388d65b9eff51e4c7965d9b276552ae06878da5b1422607885df

      SHA512

      a6728e2f4a7cd76e2d90725722907a0ea51f2507b67251667181a2ca9052e82685a729b0d00b6b48f01058db69d69e310025dd79bb7bc7bdbe3784d991d49f23

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe
      MD5

      e0cacf3b4629d583074d0fc5b436b232

      SHA1

      0755c4b3e43fd01e21e2114b780b1ee802dce051

      SHA256

      352706f0e258388d65b9eff51e4c7965d9b276552ae06878da5b1422607885df

      SHA512

      a6728e2f4a7cd76e2d90725722907a0ea51f2507b67251667181a2ca9052e82685a729b0d00b6b48f01058db69d69e310025dd79bb7bc7bdbe3784d991d49f23

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe
      MD5

      e0cacf3b4629d583074d0fc5b436b232

      SHA1

      0755c4b3e43fd01e21e2114b780b1ee802dce051

      SHA256

      352706f0e258388d65b9eff51e4c7965d9b276552ae06878da5b1422607885df

      SHA512

      a6728e2f4a7cd76e2d90725722907a0ea51f2507b67251667181a2ca9052e82685a729b0d00b6b48f01058db69d69e310025dd79bb7bc7bdbe3784d991d49f23

      Download Submit
    • \Users\Admin\AppData\Local\Temp\1.exe
      MD5

      e0cacf3b4629d583074d0fc5b436b232

      SHA1

      0755c4b3e43fd01e21e2114b780b1ee802dce051

      SHA256

      352706f0e258388d65b9eff51e4c7965d9b276552ae06878da5b1422607885df

      SHA512

      a6728e2f4a7cd76e2d90725722907a0ea51f2507b67251667181a2ca9052e82685a729b0d00b6b48f01058db69d69e310025dd79bb7bc7bdbe3784d991d49f23

      Download Submit
    • \Users\Admin\AppData\Local\Temp\Runtime Broker.exe
      MD5

      e0cacf3b4629d583074d0fc5b436b232

      SHA1

      0755c4b3e43fd01e21e2114b780b1ee802dce051

      SHA256

      352706f0e258388d65b9eff51e4c7965d9b276552ae06878da5b1422607885df

      SHA512

      a6728e2f4a7cd76e2d90725722907a0ea51f2507b67251667181a2ca9052e82685a729b0d00b6b48f01058db69d69e310025dd79bb7bc7bdbe3784d991d49f23

      Download Submit
    • memory/652-59-0x0000000000530000-0x0000000000531000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1664-54-0x0000000075D61000-0x0000000075D63000-memory.dmp
      Filesize

      8KB

      Download
    • memory/1676-64-0x0000000000410000-0x0000000000450000-memory.dmp
      Filesize

      256KB

      Download