Overview

overview

10

Static

static

10

fixer.exe

windows7-x64

10

fixer.exe

windows10-2004-x64

8

Sharing

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General

  • Target

    fixer.exe

  • Size

    37KB

  • Sample

    241228-vnpmcazqdr

  • MD5

    c7696b58deb5e95c507a043bf12be20a

  • SHA1

    2e78f7d8c1b0d55f0a089b6f9c283a2ed1de7296

  • SHA256

    355cc4d01ff4e1e7823a5f9309d132e156bbaccfd132843ff6b16c1a51e4e808

  • SHA512

    714d7489a045e01657e3914f565e3459915276fe2cb80fd13f448eedf2b919bec0e6fe2c49e882954da8601e93cff93ff79a33a0771870e86e7c5e36d6d5078a

  • SSDEEP

    384:d2IAJqDKicFD25Rg5Iy1vJAJ/xzaYa6NwlrAF+rMRTyN/0L+EcoinblneHQM3epQ:IIAGE5j1vJAJVal6mlrM+rMRa8Nunyt

Score
10/10
njratboykisserdiscoveryevasionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

boykisser

C2

issues-religion.gl.at.ply.gg:24271

Mutex

974d0e73d45f67eaec053d9149fad58b

Attributes
  • reg_key

    974d0e73d45f67eaec053d9149fad58b

  • splitter

    |'|'|

Targets

    • Target

      fixer.exe

    • Size

      37KB

    • MD5

      c7696b58deb5e95c507a043bf12be20a

    • SHA1

      2e78f7d8c1b0d55f0a089b6f9c283a2ed1de7296

    • SHA256

      355cc4d01ff4e1e7823a5f9309d132e156bbaccfd132843ff6b16c1a51e4e808

    • SHA512

      714d7489a045e01657e3914f565e3459915276fe2cb80fd13f448eedf2b919bec0e6fe2c49e882954da8601e93cff93ff79a33a0771870e86e7c5e36d6d5078a

    • SSDEEP

      384:d2IAJqDKicFD25Rg5Iy1vJAJ/xzaYa6NwlrAF+rMRTyN/0L+EcoinblneHQM3epQ:IIAGE5j1vJAJVal6mlrM+rMRa8Nunyt

    Score
    10/10
    njratboykisserdiscoveryevasionpersistenceprivilege_escalationtrojan

    • Njrat family

      njrat

    • njRAT/Bladabindi

      Widely used RAT written in .NET.

      trojannjrat

    • Modifies Windows Firewall

      evasion

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Drops autorun.inf file

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

    behavioral1behavioral2

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

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

Tasks