joker | a23a6c4af10ac9eb38c1422fb7368958a41662bd52a157c63217c117f31dfade | Triage

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Overview

overview

Static

static

a23a6c4af1...de.exe

windows7-x64

4

a23a6c4af1...de.exe

windows10-2004-x64

Sharing

General

Target

a23a6c4af10ac9eb38c1422fb7368958a41662bd52a157c63217c117f31dfade
Size

74KB
Sample

220919-aa131abgfn
MD5

0437b59f19460ba53d1f033cbb8a9fa6
SHA1

2baa467d0d736d331fdd59404099efe2786035d6
SHA256

a23a6c4af10ac9eb38c1422fb7368958a41662bd52a157c63217c117f31dfade
SHA512

da6bf2d6e34dcbf5f478bc06ab95814ada5569fc5a10eeb75692ae7385f4173a48600714039ad054c982ca1d1032660e6e7eb09fbc95342df84a2713da48b7c1
SSDEEP

1536:8+py7ZZA7zCCt4aUXrLOyJMf6IGv7U7jjcDSEYUu3LIxL3sgH2KRKpzZ:882kj4aUXr+wDU78DhYYxLzeZ

Score

10^/10

joker evasion infostealer persistence trojan

Static task

static1

Behavioral task

behavioral1

Sample

a23a6c4af10ac9eb38c1422fb7368958a41662bd52a157c63217c117f31dfade.exe

Resource

win7-20220812-en

windows7-x64

3 signatures

150 seconds

Behavioral task

behavioral2

Sample

a23a6c4af10ac9eb38c1422fb7368958a41662bd52a157c63217c117f31dfade.exe

Resource

win10v2004-20220812-en

joker evasion infostealer persistence trojan

windows10-2004-x64

20 signatures

150 seconds

Malware Config

Targets

- Target
  
  a23a6c4af10ac9eb38c1422fb7368958a41662bd52a157c63217c117f31dfade
- Size
  
  74KB
- MD5
  
  0437b59f19460ba53d1f033cbb8a9fa6
- SHA1
  
  2baa467d0d736d331fdd59404099efe2786035d6
- SHA256
  
  a23a6c4af10ac9eb38c1422fb7368958a41662bd52a157c63217c117f31dfade
- SHA512
  
  da6bf2d6e34dcbf5f478bc06ab95814ada5569fc5a10eeb75692ae7385f4173a48600714039ad054c982ca1d1032660e6e7eb09fbc95342df84a2713da48b7c1
- SSDEEP
  
  1536:8+py7ZZA7zCCt4aUXrLOyJMf6IGv7U7jjcDSEYUu3LIxL3sgH2KRKpzZ:882kj4aUXr+wDU78DhYYxLzeZ
Score

10^/10

joker evasion 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.
- 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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