joker | 31c575d1b3001f25025bac347ac75488c7f9c2430b4044fcaa1ea7537a1f939c | Triage

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Overview

overview

Static

static

31c575d1b3...9c.exe

windows7-x64

1

31c575d1b3...9c.exe

windows10-2004-x64

Sharing

General

Target

31c575d1b3001f25025bac347ac75488c7f9c2430b4044fcaa1ea7537a1f939c
Size

57KB
Sample

221031-a8j75shbb5
MD5

9240006995268f1a7fb951a2f3f91524
SHA1

d98dab03e8083c2206cae0abc0d4bef0c428f377
SHA256

31c575d1b3001f25025bac347ac75488c7f9c2430b4044fcaa1ea7537a1f939c
SHA512

36412af3089b36da5e9be60d5bda2e791d8ce0833a32ad1b8522f0ab856b656c3ad411de8cc39888f034336f131e936b4bada76246d5550515b71600728b00ef
SSDEEP

1536:OaLphh4px/GaOsXDp1CbVZn+K5mayAMIr:OIphho/1OOTNSr

Score

10^/10

joker evasion infostealer persistence trojan

Static task

static1

Behavioral task

behavioral1

Sample

31c575d1b3001f25025bac347ac75488c7f9c2430b4044fcaa1ea7537a1f939c.exe

Resource

win7-20220812-en

windows7-x64

0 signatures

150 seconds

Behavioral task

behavioral2

Sample

31c575d1b3001f25025bac347ac75488c7f9c2430b4044fcaa1ea7537a1f939c.exe

Resource

win10v2004-20220812-en

joker evasion infostealer persistence trojan

windows10-2004-x64

16 signatures

150 seconds

Malware Config

Targets

- Target
  
  31c575d1b3001f25025bac347ac75488c7f9c2430b4044fcaa1ea7537a1f939c
- Size
  
  57KB
- MD5
  
  9240006995268f1a7fb951a2f3f91524
- SHA1
  
  d98dab03e8083c2206cae0abc0d4bef0c428f377
- SHA256
  
  31c575d1b3001f25025bac347ac75488c7f9c2430b4044fcaa1ea7537a1f939c
- SHA512
  
  36412af3089b36da5e9be60d5bda2e791d8ce0833a32ad1b8522f0ab856b656c3ad411de8cc39888f034336f131e936b4bada76246d5550515b71600728b00ef
- SSDEEP
  
  1536:OaLphh4px/GaOsXDp1CbVZn+K5mayAMIr:OIphho/1OOTNSr
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
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

Query Registry

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

behavioral2

jokerevasioninfostealerpersistencetrojan

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