Analysis
- max time kernel
138s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240419-en - resource tags
- submitted
04/05/2024, 17:43
General
- Target Client-built.exe
- Size 3.1MB
- Sample240504-wak8fach61
- SHA256 6210830fb55c48cdfd8c07fa34660a7ce4c726ab79d5dad2f29f39605c6d16e3
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
perlaa-37114.portmap.host:37114
-
9e487c22-a059-4cc4-bec3-5c5168e59ea5
-
encryption_key
C4102E690299FE9AA417D8EF1564826B8FED0071
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
Client.exe
memory/3116-0-0x00007FFEF4923000-0x00007FFEF4925000-memory.dmp
memory/3116-1-0x0000000000670000-0x0000000000994000-memory.dmp
memory/3116-2-0x00007FFEF4920000-0x00007FFEF53E1000-memory.dmp
memory/3116-10-0x00007FFEF4920000-0x00007FFEF53E1000-memory.dmp
memory/4508-9-0x00007FFEF4920000-0x00007FFEF53E1000-memory.dmp
memory/4508-11-0x00007FFEF4920000-0x00007FFEF53E1000-memory.dmp
memory/4508-12-0x000000001C260000-0x000000001C2B0000-memory.dmp
memory/4508-13-0x000000001C370000-0x000000001C422000-memory.dmp
memory/4508-14-0x00007FFEF4920000-0x00007FFEF53E1000-memory.dmp