Overview

overview

10

Static

static

10

fixer.exe

windows10-2004-x64

8

Sharing

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General

  • Target

    fixer.exe

  • Size

    37KB

  • Sample

    241228-vth2razlfx

  • MD5

    dcbe24f29c827478c6616974d7f6f83b

  • SHA1

    2ae1cf5cad30e2cbdc794aca7ea3b7e7d11dce0f

  • SHA256

    cea2e14387453a028cd6a95960bce28ed65c5c61d94b93defc4ddc94482477c1

  • SHA512

    64dce5e86ed28db768d1d7cf50faf410ca4569a6da82665b2290ce4e70033d54bc316b952267a012fdf8be8b8b7e5a4eba4636525b2d53fbf37c483337f68fa1

  • SSDEEP

    384:0a9SikSvmkO8IV+ytbNX0PrKs2MfErAF+rMRTyN/0L+EcoinblneHQM3epzXLNCi:lfIV1tbNX0elM8rM+rMRa8NuRft

Score
10/10
njratboykisserdiscoveryevasionpersistenceprivilege_escalation

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

boykisser

C2

printer-nebraska.gl.at.ply.gg:50300

Mutex

79002caee528766a1ca30fecb0f3f819

Attributes
  • reg_key

    79002caee528766a1ca30fecb0f3f819

  • splitter

    |'|'|

Targets

    • Target

      fixer.exe

    • Size

      37KB

    • MD5

      dcbe24f29c827478c6616974d7f6f83b

    • SHA1

      2ae1cf5cad30e2cbdc794aca7ea3b7e7d11dce0f

    • SHA256

      cea2e14387453a028cd6a95960bce28ed65c5c61d94b93defc4ddc94482477c1

    • SHA512

      64dce5e86ed28db768d1d7cf50faf410ca4569a6da82665b2290ce4e70033d54bc316b952267a012fdf8be8b8b7e5a4eba4636525b2d53fbf37c483337f68fa1

    • SSDEEP

      384:0a9SikSvmkO8IV+ytbNX0PrKs2MfErAF+rMRTyN/0L+EcoinblneHQM3epzXLNCi:lfIV1tbNX0elM8rM+rMRa8NuRft

    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

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