Analysis
-
max time kernel
148s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
28-04-2024 07:18
Behavioral task
behavioral1
Sample
e0537c132607a98cb4133bb066a74db2.exe
Resource
win7-20240221-en
General
-
Target
e0537c132607a98cb4133bb066a74db2.exe
-
Size
3.1MB
-
MD5
e0537c132607a98cb4133bb066a74db2
-
SHA1
6a9b6335b9f091e0480fc7167b4d7304677ce08b
-
SHA256
a2b66f9f80d2add5e7b13f9e75b6c964e53d7aa2e52065b469b83f7e7c31fa7c
-
SHA512
eb4550090c17c2379455475f91fc637769ab72754fb30f1dd2228a0f18bec86e3eca46cee9f1201cfc3be8314b153633f22cced3cc2467d90d6b3b9d3e7bf65b
-
SSDEEP
49152:6vxt62XlaSFNWPjljiFa2RoUYIaPRJ6LbR3LoGdATHHB72eh2NT:6v762XlaSFNWPjljiFXRoUYIaPRJ6d
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.10.193:4455
71f9480f-0626-42cf-aad4-d6f84c1c5e58
-
encryption_key
C030D8F7F18781EB62BC0CFFC3F2B361D2649603
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
QClient
-
subdirectory
SubDir
Signatures
-
Quasar payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4224-0-0x0000000000180000-0x00000000004A4000-memory.dmp family_quasar -
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 1 IoCs
Processes:
e0537c132607a98cb4133bb066a74db2.exedescription pid process Token: SeDebugPrivilege 4224 e0537c132607a98cb4133bb066a74db2.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
e0537c132607a98cb4133bb066a74db2.exepid process 4224 e0537c132607a98cb4133bb066a74db2.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
e0537c132607a98cb4133bb066a74db2.exedescription pid process target process PID 4224 wrote to memory of 1148 4224 e0537c132607a98cb4133bb066a74db2.exe schtasks.exe PID 4224 wrote to memory of 1148 4224 e0537c132607a98cb4133bb066a74db2.exe schtasks.exe -
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\e0537c132607a98cb4133bb066a74db2.exe"C:\Users\Admin\AppData\Local\Temp\e0537c132607a98cb4133bb066a74db2.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "QClient" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
-
memory/4224-0-0x0000000000180000-0x00000000004A4000-memory.dmpFilesize
3.1MB
-
memory/4224-1-0x00007FFB1F810000-0x00007FFB202D1000-memory.dmpFilesize
10.8MB
-
memory/4224-2-0x000000001B2E0000-0x000000001B2F0000-memory.dmpFilesize
64KB
-
memory/4224-3-0x00000000028D0000-0x0000000002920000-memory.dmpFilesize
320KB
-
memory/4224-4-0x000000001BAA0000-0x000000001BB52000-memory.dmpFilesize
712KB
-
memory/4224-5-0x00007FFB1F810000-0x00007FFB202D1000-memory.dmpFilesize
10.8MB
-
memory/4224-6-0x000000001B2E0000-0x000000001B2F0000-memory.dmpFilesize
64KB