Analysis
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max time kernel
1032s -
max time network
1051s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
27-06-2024 19:31
General
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Target
Loader.exe
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Size
3.1MB
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MD5
daf9409eb0c42c801076c1eebc574c9f
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SHA1
18312de07c4f7bbc4181850b22d5195d17dd6e7b
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SHA256
215f5b71ce3863e06a15912c7c50435e47b7e371d4d5b0aa91141757978ed2ea
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SHA512
ef067f9fc07c5a9c100c8dc804cd09492fdeeb4821c939078db1a848b712229e26c5e005851518b31528bf733c27c1d19d9fe6c374fc37a597055c591e09dfd2
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SSDEEP
49152:zv0uf2NUaNmwzPWlvdaKM7ZxTwCeRJ6FbR3LoGdaTHHB72eh2NT:zvjf2NUaNmwzPWlvdaB7ZxTwCeRJ6X
Malware Config
Extracted
quasar
1.4.1
Office04
history-foo.gl.at.ply.gg:42349
51fe5088-4e6f-43ea-a53f-ed49150587aa324254r4r3weff4f45r3ewwtrfrt
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encryption_key
CBFC5D217E55BEBDCD3A6EFA924299F76BC328D9
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Update
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subdirectory
SubDir
Signatures
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Quasar payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/320-1-0x0000000000290000-0x00000000005B4000-memory.dmp family_quasar -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
Loader.exedescription pid process Token: SeDebugPrivilege 320 Loader.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Loader.exepid process 320 Loader.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
Loader.exedescription pid process target process PID 320 wrote to memory of 616 320 Loader.exe schtasks.exe PID 320 wrote to memory of 616 320 Loader.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\Loader.exe"C:\Users\Admin\AppData\Local\Temp\Loader.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/320-0-0x00007FFB58523000-0x00007FFB58525000-memory.dmpFilesize
8KB
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memory/320-1-0x0000000000290000-0x00000000005B4000-memory.dmpFilesize
3.1MB
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memory/320-2-0x00007FFB58520000-0x00007FFB58FE1000-memory.dmpFilesize
10.8MB
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memory/320-4-0x000000001D2E0000-0x000000001D392000-memory.dmpFilesize
712KB
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memory/320-3-0x000000001D1D0000-0x000000001D220000-memory.dmpFilesize
320KB
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memory/320-7-0x000000001D260000-0x000000001D272000-memory.dmpFilesize
72KB
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memory/320-8-0x000000001DDE0000-0x000000001DE1C000-memory.dmpFilesize
240KB
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memory/320-9-0x00007FFB58523000-0x00007FFB58525000-memory.dmpFilesize
8KB
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memory/320-10-0x00007FFB58520000-0x00007FFB58FE1000-memory.dmpFilesize
10.8MB