Overview

overview

10

Static

static

5

4c91884307...7b.exe

windows7-x64

10

4c91884307...7b.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    4c91884307199fbadb8aa41ce6d6bdef10e0d185737f75c79dbe28e62267c37b

  • Size

    1.1MB

  • Sample

    221125-b85phsgb2x

  • MD5

    6d614c1cc6113efb12d0d7eb0147db64

  • SHA1

    6e2ec4f4e73a358849c9b147428dbdb609d043f1

  • SHA256

    4c91884307199fbadb8aa41ce6d6bdef10e0d185737f75c79dbe28e62267c37b

  • SHA512

    78158ab786852d597a084a5f55401ae087468ae02ae077d56593c68eb4f0464b2573ba1347c9c0cd7a58409194232d2eb12a446b72e53ff569251668d25de007

  • SSDEEP

    24576:Itb20pkaCqT5TBWgNQ7aGSbRNn0eeiN/P+U7F16A:RVg5tQ7aGocen+U35

Score
10/10
njratu0lf4óßgòinbmìnñõûãáíúòæéâgþevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

u0lf4ÓßgÒiNBMìNñõÛÃáÍÚÒæÉâgþ

C2

193.0.200.131:35689

Mutex

abde6d91c02e072e675204de91168fab

Attributes
  • reg_key

    abde6d91c02e072e675204de91168fab

  • splitter

    |'|'|

Targets

    • Target

      4c91884307199fbadb8aa41ce6d6bdef10e0d185737f75c79dbe28e62267c37b

    • Size

      1.1MB

    • MD5

      6d614c1cc6113efb12d0d7eb0147db64

    • SHA1

      6e2ec4f4e73a358849c9b147428dbdb609d043f1

    • SHA256

      4c91884307199fbadb8aa41ce6d6bdef10e0d185737f75c79dbe28e62267c37b

    • SHA512

      78158ab786852d597a084a5f55401ae087468ae02ae077d56593c68eb4f0464b2573ba1347c9c0cd7a58409194232d2eb12a446b72e53ff569251668d25de007

    • SSDEEP

      24576:Itb20pkaCqT5TBWgNQ7aGSbRNn0eeiN/P+U7F16A:RVg5tQ7aGocen+U35

    Score
    10/10
    njratu0lf4óßgòinbmìnñõûãáíúòæéâgþevasionpersistencetrojan

    • Modifies WinLogon for persistence

      persistence

    • Modifies visiblity of hidden/system files in Explorer

      evasion

    • njRAT/Bladabindi

      Widely used RAT written in .NET.

      trojannjrat

    • Blocks application from running via registry modification

      Adds application to list of disallowed applications.

      evasion

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Modifies Windows Firewall

      evasion

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Drops desktop.ini file(s)

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Hidden Files and Directories

3
T1158

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

4
T1112

Hidden Files and Directories

3
T1158

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks