joker | a6a5430736ba8eaa3c03ce85ed5ed0c1a21bb4a98a109e47e2ea2548f421c38f | Triage

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Overview

overview

Static

static

a6a5430736...8f.exe

windows7-x64

1

a6a5430736...8f.exe

windows10-2004-x64

Sharing

General

Target

a6a5430736ba8eaa3c03ce85ed5ed0c1a21bb4a98a109e47e2ea2548f421c38f
Size

140KB
Sample

221019-thm1wsfbhl
MD5

a13006667e96bf28c49e4cb3bb432e1e
SHA1

c189d75796b830154225dacb992d4e81af5eaf7f
SHA256

a6a5430736ba8eaa3c03ce85ed5ed0c1a21bb4a98a109e47e2ea2548f421c38f
SHA512

b403141d42e01dc089536f073a26fd729e7cd59468734f9abaeaf0d496d9211476de6f4d835ff5717b33874804ccb587bc9ac6091b6b66df19ffe2d942a26cd0
SSDEEP

1536:nnMg2OVLjlevyaRLBnLuRgiaUxRIxecePKH5nKLV+K:M0LpeTLlamiaUxRIxecePKQv

Score

10^/10

joker evasion infostealer persistence trojan

Static task

static1

Behavioral task

behavioral1

Sample

a6a5430736ba8eaa3c03ce85ed5ed0c1a21bb4a98a109e47e2ea2548f421c38f.exe

Resource

win7-20220901-en

windows7-x64

0 signatures

150 seconds

Behavioral task

behavioral2

Sample

a6a5430736ba8eaa3c03ce85ed5ed0c1a21bb4a98a109e47e2ea2548f421c38f.exe

Resource

win10v2004-20220812-en

joker evasion infostealer persistence trojan

windows10-2004-x64

17 signatures

150 seconds

Malware Config

Targets

- Target
  
  a6a5430736ba8eaa3c03ce85ed5ed0c1a21bb4a98a109e47e2ea2548f421c38f
- Size
  
  140KB
- MD5
  
  a13006667e96bf28c49e4cb3bb432e1e
- SHA1
  
  c189d75796b830154225dacb992d4e81af5eaf7f
- SHA256
  
  a6a5430736ba8eaa3c03ce85ed5ed0c1a21bb4a98a109e47e2ea2548f421c38f
- SHA512
  
  b403141d42e01dc089536f073a26fd729e7cd59468734f9abaeaf0d496d9211476de6f4d835ff5717b33874804ccb587bc9ac6091b6b66df19ffe2d942a26cd0
- SSDEEP
  
  1536:nnMg2OVLjlevyaRLBnLuRgiaUxRIxecePKH5nKLV+K:M0LpeTLlamiaUxRIxecePKQv
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.
- Adds Run key to start application
  persistence
- Enumerates connected drives
  Attempts to read the root path of hard drives other than the default C: drive.
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

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

behavioral2

jokerevasioninfostealerpersistencetrojan

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