joker | 540a803082a5e4c7520428ef97b77097d561acd85fa956b33152f195a1e55539 | Triage

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Reports

Overview

overview

Static

static

540a803082...39.exe

windows7-x64

1

540a803082...39.exe

windows10-2004-x64

Sharing

General

Target

540a803082a5e4c7520428ef97b77097d561acd85fa956b33152f195a1e55539
Size

54KB
Sample

221019-thnbnafaa2
MD5

a11faee6cf2b94ecaee142b445a6bd65
SHA1

ce20793652fba8ec197544b6bc0b2e0ac4609d72
SHA256

540a803082a5e4c7520428ef97b77097d561acd85fa956b33152f195a1e55539
SHA512

09596708fca596b8537f548ac3a8934dd3aec149cab56598ca442d0e1a43eb1f77cef11d6ec44a93de993cf4501e4033d65dec8cb41da9167c22eb9609f64646
SSDEEP

768:sVKm4GV4ujtuYgFC5IjezJckOyLb172+oEFZ0TORX3iSHWIwjkdLv/kcH5hUDrpT:sQKV1MyVckOG12TGX1HxwjkVnDhI+Hg

Score

10^/10

joker evasion infostealer persistence trojan

Static task

static1

Behavioral task

behavioral1

Sample

540a803082a5e4c7520428ef97b77097d561acd85fa956b33152f195a1e55539.exe

Resource

win7-20220901-en

windows7-x64

0 signatures

150 seconds

Behavioral task

behavioral2

Sample

540a803082a5e4c7520428ef97b77097d561acd85fa956b33152f195a1e55539.exe

Resource

win10v2004-20220901-en

joker evasion infostealer persistence trojan

windows10-2004-x64

17 signatures

150 seconds

Malware Config

Targets

- Target
  
  540a803082a5e4c7520428ef97b77097d561acd85fa956b33152f195a1e55539
- Size
  
  54KB
- MD5
  
  a11faee6cf2b94ecaee142b445a6bd65
- SHA1
  
  ce20793652fba8ec197544b6bc0b2e0ac4609d72
- SHA256
  
  540a803082a5e4c7520428ef97b77097d561acd85fa956b33152f195a1e55539
- SHA512
  
  09596708fca596b8537f548ac3a8934dd3aec149cab56598ca442d0e1a43eb1f77cef11d6ec44a93de993cf4501e4033d65dec8cb41da9167c22eb9609f64646
- SSDEEP
  
  768:sVKm4GV4ujtuYgFC5IjezJckOyLb172+oEFZ0TORX3iSHWIwjkdLv/kcH5hUDrpT:sQKV1MyVckOG12TGX1HxwjkVnDhI+Hg
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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