Overview

overview

10

Static

static

10

a49637acb8...3c.exe

windows7_x64

10

a49637acb8...3c.exe

windows10_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-en
  • submitted
    04-09-2021 17:51

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    a49637acb8f867866fc338b878145b3c.exe

  • Size

    103KB

  • MD5

    a49637acb8f867866fc338b878145b3c

  • SHA1

    1d00ebe1334ff83baed5c5088977199dd3a2067d

  • SHA256

    dac1dc3a6ccefe51ee7d3346b43ee90aeb924c79ac0a12e7d3b20b49d168479a

  • SHA512

    6965f4a7006767ecc18915f97f25e9f648cfde188ced651a645e2dee56da6eb1020143c809b28e032c95126111453b60796193148bf17800e08776d07982e03e

Score
10/10
njratdlbyteevasionsuricatatrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

dlbyte

C2

8.tcp.ngrok.io:11904

Mutex

77d2e2c7d5fea9d8d12fca7c2a7a3030

Attributes
  • reg_key

    77d2e2c7d5fea9d8d12fca7c2a7a3030

  • 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 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Loads dropped DLL 1 IoCs
  • 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 31 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a49637acb8f867866fc338b878145b3c.exe
    "C:\Users\Admin\AppData\Local\Temp\a49637acb8f867866fc338b878145b3c.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1364
    • C:\Users\Admin\AppData\Local\Temp\SyByteUI.exe
      "C:\Users\Admin\AppData\Local\Temp\SyByteUI.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1312
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\SyByteUI.exe" "SyByteUI.exe" ENABLE
        3⤵
          PID:896

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    Privilege Escalation

    Defense Evasion

    Credential Access

    Discovery

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      a49637acb8f867866fc338b878145b3c

      SHA1

      1d00ebe1334ff83baed5c5088977199dd3a2067d

      SHA256

      dac1dc3a6ccefe51ee7d3346b43ee90aeb924c79ac0a12e7d3b20b49d168479a

      SHA512

      6965f4a7006767ecc18915f97f25e9f648cfde188ced651a645e2dee56da6eb1020143c809b28e032c95126111453b60796193148bf17800e08776d07982e03e

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

      a49637acb8f867866fc338b878145b3c

      SHA1

      1d00ebe1334ff83baed5c5088977199dd3a2067d

      SHA256

      dac1dc3a6ccefe51ee7d3346b43ee90aeb924c79ac0a12e7d3b20b49d168479a

      SHA512

      6965f4a7006767ecc18915f97f25e9f648cfde188ced651a645e2dee56da6eb1020143c809b28e032c95126111453b60796193148bf17800e08776d07982e03e

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

      a49637acb8f867866fc338b878145b3c

      SHA1

      1d00ebe1334ff83baed5c5088977199dd3a2067d

      SHA256

      dac1dc3a6ccefe51ee7d3346b43ee90aeb924c79ac0a12e7d3b20b49d168479a

      SHA512

      6965f4a7006767ecc18915f97f25e9f648cfde188ced651a645e2dee56da6eb1020143c809b28e032c95126111453b60796193148bf17800e08776d07982e03e

      Download Submit
    • memory/896-60-0x0000000000000000-mapping.dmp
      Download
    • memory/1312-55-0x0000000000000000-mapping.dmp
      Download
    • memory/1312-59-0x0000000001FD0000-0x0000000001FD1000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1364-52-0x00000000760A1000-0x00000000760A3000-memory.dmp
      Filesize

      8KB

      Download
    • memory/1364-53-0x00000000005A0000-0x00000000005A1000-memory.dmp
      Filesize

      4KB

      Download