Analysis
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max time kernel
149s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20240704-en -
resource tags
arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system -
submitted
28-07-2024 16:08
Behavioral task
behavioral1
Sample
1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe
Resource
win10v2004-20240704-en
General
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Target
1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe
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Size
3.1MB
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MD5
e3e1f7fa42dd68f410bb885f0aefe5e3
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SHA1
d51edc519d86a11e6533cd4cac8f190dd3f7d4bb
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SHA256
1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3
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SHA512
92ac0379074366a4dbb9235d8c61935be6d8086629611dbcdecdaf680a0a8636f7810d4f6394dbdee5b1e463842284ab9855534da4627677965557e8eb609aa3
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SSDEEP
49152:6v5t62XlaSFNWPjljiFa2RoUYIHSz3farvLoGdRbTHHB72eh2NT:6vT62XlaSFNWPjljiFXRoUYI+38B
Malware Config
Extracted
quasar
1.4.1
Office04
193.42.11.9:4329
4c2abd13-f813-4493-8701-1c7115caee61
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encryption_key
665C8B508EC328B12F8F1A2A20662BF0DBA9F069
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install_name
edge.exe
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log_directory
Logs
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reconnect_delay
1000
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startup_key
Chrome
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subdirectory
browser
Signatures
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Quasar payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/2284-1-0x00000000001A0000-0x00000000004C4000-memory.dmp family_quasar C:\Users\Admin\AppData\Roaming\browser\edge.exe family_quasar -
Executes dropped EXE 1 IoCs
Processes:
edge.exepid process 2344 edge.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 3216 schtasks.exe 3180 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exeedge.exedescription pid process Token: SeDebugPrivilege 2284 1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe Token: SeDebugPrivilege 2344 edge.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
edge.exepid process 2344 edge.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exeedge.exedescription pid process target process PID 2284 wrote to memory of 3216 2284 1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe schtasks.exe PID 2284 wrote to memory of 3216 2284 1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe schtasks.exe PID 2284 wrote to memory of 2344 2284 1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe edge.exe PID 2284 wrote to memory of 2344 2284 1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe edge.exe PID 2344 wrote to memory of 3180 2344 edge.exe schtasks.exe PID 2344 wrote to memory of 3180 2344 edge.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
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C:\Users\Admin\AppData\Local\Temp\1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe"C:\Users\Admin\AppData\Local\Temp\1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2284 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Chrome" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\browser\edge.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
PID:3216 -
C:\Users\Admin\AppData\Roaming\browser\edge.exe"C:\Users\Admin\AppData\Roaming\browser\edge.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2344 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Chrome" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\browser\edge.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
PID:3180
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.1MB
MD5e3e1f7fa42dd68f410bb885f0aefe5e3
SHA1d51edc519d86a11e6533cd4cac8f190dd3f7d4bb
SHA2561d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3
SHA51292ac0379074366a4dbb9235d8c61935be6d8086629611dbcdecdaf680a0a8636f7810d4f6394dbdee5b1e463842284ab9855534da4627677965557e8eb609aa3