Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
15/01/2024, 18:56
General
- Target Client-built.exe
- Size 3.1MB
- Sample240115-xltjmaedf3
- SHA256 83bfef3d9ae58daab774f275b1d0eb9e4d853a9f41f2bfa4214ca3c07e7fc840
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
176.150.69.221:42474
-
674e3f65-95e3-4763-9993-9d0472ef2f47
-
encryption_key
8431D289A56A80F0BA331AB4E2A57E16C41A1031
-
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 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 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 FindShellTrayWindow
- Suspicious use of SendNotifyMessage
-
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe1⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k UnistackSvcGroup1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/2332-22-0x0000020408A40000-0x0000020408A50000-memory.dmp
memory/2332-38-0x0000020410D70000-0x0000020410D71000-memory.dmp
memory/2332-40-0x0000020410DA0000-0x0000020410DA1000-memory.dmp
memory/2332-41-0x0000020410DA0000-0x0000020410DA1000-memory.dmp
memory/2332-42-0x0000020410EB0000-0x0000020410EB1000-memory.dmp
memory/4348-0-0x00000000009B0000-0x0000000000CD4000-memory.dmp
memory/4348-1-0x00007FFBADB70000-0x00007FFBAE631000-memory.dmp
memory/4348-2-0x000000001BAB0000-0x000000001BAC0000-memory.dmp
memory/4348-3-0x000000001C3C0000-0x000000001C410000-memory.dmp
memory/4348-4-0x000000001C4D0000-0x000000001C582000-memory.dmp
memory/4348-5-0x00007FFBADB70000-0x00007FFBAE631000-memory.dmp