Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
05/08/2026, 04:38
General
- Target catlavan-recode.exe
- Size 1.2MB
- Sample260805-e9sywsybpg
- SHA256 60ecb7c972bb35a8a2769e43f493e277d54076b0ec5b41662950118e1c62f216
Score
10/10
Malware Config
Extracted
Family
-
quasar
Attributes
-
encryption_key
33A7029011B6BD4B067B8907EB238F25EFF233BF
-
key_salt
5a23f8394640cb9e40658446a04c0bbae82dc93d0470e1b2a406a90fd2520382
-
reconnect_delay
3000
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 2 IoCs
- Drops file in System32 directory 5 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 3 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\catlavan-recode.exe"C:\Users\Admin\AppData\Local\Temp\catlavan-recode.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "SystemHelper" /sc ONLOGON /tr "C:\Windows\system32\SubDir\SystemHelper.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Windows\system32\SubDir\SystemHelper.exe"C:\Windows\system32\SubDir\SystemHelper.exe"2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "SystemHelper" /sc ONLOGON /tr "C:\Windows\system32\SubDir\SystemHelper.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
-
C:\Windows\system32\SubDir\SystemHelper.exeC:\Windows\system32\SubDir\SystemHelper.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
SystemHelper.exe
memory/592-0-0x0000020A60940000-0x0000020A60A76000-memory.dmp
memory/592-1-0x0000020A62780000-0x0000020A62790000-memory.dmp
memory/592-2-0x0000020A62720000-0x0000020A62754000-memory.dmp
memory/4024-9-0x0000018D784B0000-0x0000018D784C0000-memory.dmp
memory/4024-12-0x0000018D79FE0000-0x0000018D7A018000-memory.dmp
memory/4024-13-0x0000018D784B0000-0x0000018D784C0000-memory.dmp