Analysis
-
max time kernel
25s -
max time network
31s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
17-12-2024 18:05
General
-
Target
0d57b81c8c42d3450782af358d0938d813abc28ec18b3ad6c81bd680a3efbbea.exe
-
Size
3.1MB
-
MD5
cff3e677b6383632eff6d1b52cd6d277
-
SHA1
0936fb4aa7e39f2b56bc1b4c9364bb95e8f0c2a8
-
SHA256
0d57b81c8c42d3450782af358d0938d813abc28ec18b3ad6c81bd680a3efbbea
-
SHA512
ddc33da48cf00e6ee4a57a07a98630082082f5cf76b9c1f844b17ff7f8328f0986a0d95f458947c6ca141a657991b31c608d9b3a9bdc83428ee53e55a34c2e61
-
SSDEEP
49152:6vht62XlaSFNWPjljiFa2RoUYIz0HxNESEqk/iGLoGd1THHB72eh2NT:6vL62XlaSFNWPjljiFXRoUYI4HxlI
Malware Config
Extracted
quasar
1.4.1
Office04
73.62.14.5:4782
3aaa11be-d135-4877-a61e-c409c29a7a60
-
encryption_key
BC9162791FD860195CF75664AE64885B64D5B5CE
-
install_name
Client1.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Startup
-
subdirectory
SubDir
Signatures
-
Quasar family
-
Quasar payload 2 IoCs
resource yara_rule behavioral1/memory/4332-1-0x00000000008F0000-0x0000000000C14000-memory.dmp family_quasar behavioral1/files/0x0007000000023ccb-5.dat family_quasar -
Executes dropped EXE 1 IoCs
pid Process 3928 Client1.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 880 schtasks.exe 5016 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4332 0d57b81c8c42d3450782af358d0938d813abc28ec18b3ad6c81bd680a3efbbea.exe Token: SeDebugPrivilege 3928 Client1.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3928 Client1.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 3928 Client1.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3928 Client1.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4332 wrote to memory of 880 4332 0d57b81c8c42d3450782af358d0938d813abc28ec18b3ad6c81bd680a3efbbea.exe 82 PID 4332 wrote to memory of 880 4332 0d57b81c8c42d3450782af358d0938d813abc28ec18b3ad6c81bd680a3efbbea.exe 82 PID 4332 wrote to memory of 3928 4332 0d57b81c8c42d3450782af358d0938d813abc28ec18b3ad6c81bd680a3efbbea.exe 84 PID 4332 wrote to memory of 3928 4332 0d57b81c8c42d3450782af358d0938d813abc28ec18b3ad6c81bd680a3efbbea.exe 84 PID 3928 wrote to memory of 5016 3928 Client1.exe 85 PID 3928 wrote to memory of 5016 3928 Client1.exe 85 -
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\0d57b81c8c42d3450782af358d0938d813abc28ec18b3ad6c81bd680a3efbbea.exe"C:\Users\Admin\AppData\Local\Temp\0d57b81c8c42d3450782af358d0938d813abc28ec18b3ad6c81bd680a3efbbea.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4332 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client1.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
PID:880
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Client1.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client1.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3928 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client1.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
PID:5016
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
3.1MB
MD5cff3e677b6383632eff6d1b52cd6d277
SHA10936fb4aa7e39f2b56bc1b4c9364bb95e8f0c2a8
SHA2560d57b81c8c42d3450782af358d0938d813abc28ec18b3ad6c81bd680a3efbbea
SHA512ddc33da48cf00e6ee4a57a07a98630082082f5cf76b9c1f844b17ff7f8328f0986a0d95f458947c6ca141a657991b31c608d9b3a9bdc83428ee53e55a34c2e61