Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
13/03/2024, 00:07
General
- Target c474cc70d5e8983e6f1ba7947ad40867.exe
- Size 348KB
- Sample240313-aejdrafa2v
- SHA256 2ad876fd404524bb3e6203eefe1529fcc8cf935f2aa01843c2b26413ff92e5fb
Malware Config
Extracted
-
quasar
-
1.3.0.0
-
Office04
-
136.244.94.164:3232
-
QSR_MUTEX_aK1Rny3zYk6USUVnES
-
encryption_key
UIsoQT0uq64b0QS4RSGl
-
install_name
Client.exe
-
log_directory
asd
-
reconnect_delay
1
-
startup_key
pack
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- 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 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\c474cc70d5e8983e6f1ba7947ad40867.exe"C:\Users\Admin\AppData\Local\Temp\c474cc70d5e8983e6f1ba7947ad40867.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "pack" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\c474cc70d5e8983e6f1ba7947ad40867.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
-
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
Loading Replay Monitor...
Downloads
memory/1356-12-0x000001CD15840000-0x000001CD15850000-memory.dmp
memory/1356-48-0x000001CD1DDF0000-0x000001CD1DDF1000-memory.dmp
memory/1356-47-0x000001CD1DCE0000-0x000001CD1DCE1000-memory.dmp
memory/1356-46-0x000001CD1DCE0000-0x000001CD1DCE1000-memory.dmp
memory/1356-44-0x000001CD1DCB0000-0x000001CD1DCB1000-memory.dmp
memory/1356-28-0x000001CD15940000-0x000001CD15950000-memory.dmp
memory/4960-4-0x0000000004EC0000-0x0000000004ED0000-memory.dmp
memory/4960-7-0x0000000006100000-0x000000000613C000-memory.dmp
memory/4960-9-0x0000000006480000-0x000000000648A000-memory.dmp
memory/4960-10-0x00000000744C0000-0x0000000074C70000-memory.dmp
memory/4960-11-0x0000000004EC0000-0x0000000004ED0000-memory.dmp
memory/4960-6-0x0000000005410000-0x0000000005422000-memory.dmp
memory/4960-5-0x0000000004FA0000-0x0000000005006000-memory.dmp
memory/4960-0-0x0000000000590000-0x00000000005EE000-memory.dmp
memory/4960-3-0x0000000004F00000-0x0000000004F92000-memory.dmp
memory/4960-2-0x00000000054B0000-0x0000000005A54000-memory.dmp
memory/4960-1-0x00000000744C0000-0x0000000074C70000-memory.dmp