Overview

overview

10

Static

static

10

Bootstrapper.exe

windows10-2004-x64

8

Sharing

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General

  • Target

    Bootstrapper.exe

  • Size

    37KB

  • Sample

    241201-2bmqjszlgk

  • MD5

    92fd66073b9a4f83ee5257d4dfc611fb

  • SHA1

    87377414dd581082a1e5d26633f2aa9838d26062

  • SHA256

    cbbd4d987c1f2368de89953f3d2ab06a803806faaab1d116d6c72cf11a93cbb2

  • SHA512

    f0e24cac627234e2556e7ce1b1634c32f0b17380850e3d956d35d6f92d1489dcad2fdcb799abbdf0d8169dff0d9c3da7a5672bf84899481368ed6909d6b19c95

  • SSDEEP

    768:Ob3MDF3lFdS7IVW5mae2rM+rMRa8Nuvyt:Ob6F3lPSUVW5op+gRJNE

Score
10/10
njratboykisserdiscoveryevasionpersistenceprivilege_escalation

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

boykisser

C2

eg-womens.gl.at.ply.gg:7999

Mutex

2be7fcfaf2fb2c0121ad0a1c26b16a25

Attributes
  • reg_key

    2be7fcfaf2fb2c0121ad0a1c26b16a25

  • splitter

    |'|'|

Targets

    • Target

      Bootstrapper.exe

    • Size

      37KB

    • MD5

      92fd66073b9a4f83ee5257d4dfc611fb

    • SHA1

      87377414dd581082a1e5d26633f2aa9838d26062

    • SHA256

      cbbd4d987c1f2368de89953f3d2ab06a803806faaab1d116d6c72cf11a93cbb2

    • SHA512

      f0e24cac627234e2556e7ce1b1634c32f0b17380850e3d956d35d6f92d1489dcad2fdcb799abbdf0d8169dff0d9c3da7a5672bf84899481368ed6909d6b19c95

    • SSDEEP

      768:Ob3MDF3lFdS7IVW5mae2rM+rMRa8Nuvyt:Ob6F3lPSUVW5op+gRJNE

    Score
    8/10
    discoveryevasionpersistenceprivilege_escalation

    • Modifies Windows Firewall

      evasion

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Drops autorun.inf file

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

    behavioral1

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

Browser Information Discovery

1
T1217

Query Registry

3
T1012

System Information Discovery

4
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Command and Control

Exfiltration

Impact

Tasks