Analysis
- max time kernel
150s - max time network
138s - platform
windows10-1703_x64 - resource
win10-20240221-en - resource tags
arch:x64arch:x86image:win10-20240221-enlocale:en-usos:windows10-1703-x64system - submitted
24/02/2024, 13:05
Behavioral task
behavioral1
Sample
joker.exe
Resource
win7-20240221-en
windows7-x64
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
joker.exe
Resource
win10-20240221-en
windows10-1703-x64
6 signatures
150 seconds
Behavioral task
behavioral3
Sample
joker.exe
Resource
win10v2004-20240221-en
windows10-2004-x64
6 signatures
150 seconds
Behavioral task
behavioral4
Sample
joker.exe
Resource
android-x86-arm-20240221-en
android-9-x86
0 signatures
150 seconds
Behavioral task
behavioral5
Sample
joker.exe
Resource
android-x64-20240221-en
android-10-x64
0 signatures
150 seconds
Behavioral task
behavioral6
Sample
joker.exe
Resource
android-x64-arm64-20240221-en
android-11-x64
0 signatures
150 seconds
General
- Target joker.exe
- Size 65KB
- Sample240224-qbtcjsdb9w
- SHA256 fc4a9a452313a34724e59b38bf3a2a04898219c139705d0966959f75232246c2
- MD5 49c80674d3bf97ed0574c1cd6f625983
- SHA1 fc7b6be05918098cafd1bf273f3da25d8735b95d
- SHA512 0fdd468b8361e8f9fce386ced3bcd1c78f60e98e42e067cf9cd62ec95172b0f232943d7d75474b5a2fc0e88ac39480f43485233e289d28d60301699a1ecf9604
- SSDEEP 1536:q0JN9XygoN36toQviFw1g3kAtlcBnvAHfLteF3nLrB9z3nFaF9bJS9vM:qA9XygoN36toQviFC4kAtqBnYfWl9z1a
- MD5 SHA1 SHA512 SSDEEP
Score
7/10
Malware Config
Signatures
- Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.exe joker.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.url joker.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.exe joker.exe - Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1104443672-3570440473-4052989528-1000\Software\Microsoft\Windows\CurrentVersion\Run\Client.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\joker.exe\" .." joker.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Client.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\joker.exe\" .." joker.exe - Kills process with taskkill 2 IoCs
pid Process 4992 TASKKILL.exe 1832 TASKKILL.exe - Suspicious behavior: EnumeratesProcesses 19 IoCs
pid Process 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe 220 joker.exe - Suspicious use of AdjustPrivilegeToken 35 IoCs
description pid Process Token: SeDebugPrivilege 220 joker.exe Token: SeDebugPrivilege 4992 TASKKILL.exe Token: SeDebugPrivilege 1832 TASKKILL.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe Token: 33 220 joker.exe Token: SeIncBasePriorityPrivilege 220 joker.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 220 wrote to memory of 4992 220 joker.exe 75 PID 220 wrote to memory of 4992 220 joker.exe 75 PID 220 wrote to memory of 4992 220 joker.exe 75 PID 220 wrote to memory of 1832 220 joker.exe 76 PID 220 wrote to memory of 1832 220 joker.exe 76 PID 220 wrote to memory of 1832 220 joker.exe 76
Processes
-
C:\Users\Admin\AppData\Local\Temp\joker.exe"C:\Users\Admin\AppData\Local\Temp\joker.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:220 -
C:\Windows\SysWOW64\TASKKILL.exeTASKKILL /F /IM wscript.exe2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4992
-
-
C:\Windows\SysWOW64\TASKKILL.exeTASKKILL /F /IM cmd.exe2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1832
-