Overview

overview

10

Static

static

10

Account bringer.exe

windows10-1703-x64

10

Account bringer.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    150s
  • max time network
    140s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    04-10-2024 21:16

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General

  • Target

    Account bringer.exe

  • Size

    37KB

  • MD5

    c89a1f18357d4320c84ffd1e48138a0b

  • SHA1

    3673dd9f0c57bf62f6116d50ffb299a6f5707c49

  • SHA256

    c6b3c5096f0cdc2bad82c22a4580f0a275369ba1e9e7960013fd84ea3d43e332

  • SHA512

    59fe319b714b7754de908584870ad1bf742791f168ffb0cf72b8939a8a1f96ecba4f49b4a07306d85b40033d052eca0676f20834a367e2dc8126b7248d54d925

  • SSDEEP

    384:/6Rrkam6i/Cz3xAdjYWaSyFz1YXnC8W4Lt6rAF+rMRTyN/0L+EcoinblneHQM3eF:CfaC6mNhFz1Yyd4ErM+rMRa8Nuhxt

Score
10/10
njratboykisserdiscoveryevasionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

boykisser

C2

green-morrison.gl.at.ply.gg:17455

Mutex

d83001e08eed9b05d072435f5ca1e81c

Attributes
  • reg_key

    d83001e08eed9b05d072435f5ca1e81c

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    evasion
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops autorun.inf file 1 TTPs 5 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

    persistenceprivilege_escalation
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 39 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Account bringer.exe
    "C:\Users\Admin\AppData\Local\Temp\Account bringer.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4512
    • C:\ProgramData\COM Surrogate.exe
      "C:\ProgramData\COM Surrogate.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops autorun.inf file
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3988
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\ProgramData\COM Surrogate.exe" "COM Surrogate.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:4304
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /F /IM SecHealthUI.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:196
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Drops file in Windows directory
    • Checks SCSI registry key(s)
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:3992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1
T1091

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
T1112

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • C:\ProgramData\COM Surrogate.exe
    Filesize

    37KB

    MD5

    c89a1f18357d4320c84ffd1e48138a0b

    SHA1

    3673dd9f0c57bf62f6116d50ffb299a6f5707c49

    SHA256

    c6b3c5096f0cdc2bad82c22a4580f0a275369ba1e9e7960013fd84ea3d43e332

    SHA512

    59fe319b714b7754de908584870ad1bf742791f168ffb0cf72b8939a8a1f96ecba4f49b4a07306d85b40033d052eca0676f20834a367e2dc8126b7248d54d925

    Download Submit

  • memory/3988-9-0x00000000738B0000-0x0000000073E60000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3988-11-0x00000000738B0000-0x0000000073E60000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3988-21-0x00000000738B0000-0x0000000073E60000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3988-22-0x00000000738B0000-0x0000000073E60000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3988-23-0x00000000738B0000-0x0000000073E60000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/4512-0-0x00000000738B1000-0x00000000738B2000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4512-1-0x00000000738B0000-0x0000000073E60000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/4512-2-0x00000000738B0000-0x0000000073E60000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/4512-10-0x00000000738B0000-0x0000000073E60000-memory.dmp

    Filesize

    5.7MB

    Download