Analysis
- max time kernel
191s - max time network
250s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
22/12/2023, 23:21
General
- Target aabb.exe
- Size 3.1MB
- Sample231222-3cc36sdfej
- SHA256 644b2903e1c8b5d6b63335e409b1d624e1bdf620de4bacab2d54c0bef69e5dae
Score
10/10
Malware Config
Extracted
Family
-
quasar
Version
-
1.4.1
Botnet
-
Office04
C2
-
0.tcp.eu.ngrok.io:15683
-
tcp.kochambeton.pl:1337
Mutex
-
99a331b1-13b5-4e73-be8f-b5c19bd595ef
Attributes
-
encryption_key
E31FE4ECA57A8B089443D8B26651DAD7DB7A12F8
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Counter Strike Global Offensive
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\aabb.exe"C:\Users\Admin\AppData\Local\Temp\aabb.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Counter Strike Global Offensive" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/3776-0-0x0000000000D80000-0x00000000010A4000-memory.dmp
memory/3776-1-0x00007FFCE32C0000-0x00007FFCE3D81000-memory.dmp
memory/3776-2-0x000000001BFA0000-0x000000001BFB0000-memory.dmp
memory/3776-4-0x00007FFCE32C0000-0x00007FFCE3D81000-memory.dmp
memory/3776-5-0x000000001BFA0000-0x000000001BFB0000-memory.dmp