joker | 4b5de56e33e310e79076fc2a4fe182bc30284608d8029285b09d0b12b7eb2e98 | Triage

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Overview

overview

Static

static

4b5de56e33...98.exe

windows7-x64

8

4b5de56e33...98.exe

windows10-2004-x64

Sharing

General

Target

4b5de56e33e310e79076fc2a4fe182bc30284608d8029285b09d0b12b7eb2e98
Size

252KB
Sample

221021-fhr3yscgg5
MD5

427e35a6495f37a96d047f1c4ae1ac86
SHA1

d1f983fc45f1d51216a61ee8a3c23e1c1fd1c7d5
SHA256

4b5de56e33e310e79076fc2a4fe182bc30284608d8029285b09d0b12b7eb2e98
SHA512

11ec58af55a6741d0cfcba5554ecc21cd1c2afbed06a1bd55aa4af631bd201c16755f52048819194e00022dc9d3b7c58327f46abaa5cce2b88c3338a457caf1a
SSDEEP

3072:KCtFBrDkiap75+blxPCMwy6K9MHecBQ41pBys8:KCtFtDg9sSS0HeQ8

Score

10^/10

joker evasion infostealer persistence trojan

Static task

static1

Behavioral task

behavioral1

Sample

4b5de56e33e310e79076fc2a4fe182bc30284608d8029285b09d0b12b7eb2e98.exe

Resource

win7-20220901-en

windows7-x64

15 signatures

150 seconds

Behavioral task

behavioral2

Sample

4b5de56e33e310e79076fc2a4fe182bc30284608d8029285b09d0b12b7eb2e98.exe

Resource

win10v2004-20220901-en

joker evasion infostealer persistence trojan

windows10-2004-x64

20 signatures

150 seconds

Malware Config

Targets

- Target
  
  4b5de56e33e310e79076fc2a4fe182bc30284608d8029285b09d0b12b7eb2e98
- Size
  
  252KB
- MD5
  
  427e35a6495f37a96d047f1c4ae1ac86
- SHA1
  
  d1f983fc45f1d51216a61ee8a3c23e1c1fd1c7d5
- SHA256
  
  4b5de56e33e310e79076fc2a4fe182bc30284608d8029285b09d0b12b7eb2e98
- SHA512
  
  11ec58af55a6741d0cfcba5554ecc21cd1c2afbed06a1bd55aa4af631bd201c16755f52048819194e00022dc9d3b7c58327f46abaa5cce2b88c3338a457caf1a
- SSDEEP
  
  3072:KCtFBrDkiap75+blxPCMwy6K9MHecBQ41pBys8:KCtFtDg9sSS0HeQ8
Score

10^/10

evasion joker infostealer persistence trojan
- joker
  Joker is an Android malware that targets billing and SMS fraud.
  infostealer trojan joker
- Executes dropped EXE
- 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.
- Deletes itself
- Loads dropped DLL
- Adds Run key to start application
  persistence
behavioral1 behavioral2

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

Registry Run Keys / Startup Folder

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Install Root Certificate

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

behavioral2

jokerevasioninfostealerpersistencetrojan

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