Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
27-06-2024 18:55
General
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Target
Loader.exe
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Size
3.1MB
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MD5
98cd04c4ac429841ac630d57a8407c6f
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SHA1
dcbde5d92c108aceca4342ca2b89157d4bd0444e
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SHA256
85b551f3f7d0b53ec30709df217d767e2358e74efae7df9bfa9e74f48ead784d
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SHA512
66f7b6c4c0cd1b1abad5f5a500b77cf7601004e269acb313381cc074b58d6a127913adf0bc4da439f5df361d0252e645ab5d6ad5378c1933a8592d1997e826b3
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SSDEEP
49152:Xv0uf2NUaNmwzPWlvdaKM7ZxTwHMxOFFmzqcoGd4QTHHB72eh2NT:Xvjf2NUaNmwzPWlvdaB7ZxTwsxOFMo
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/4248-1-0x0000000000650000-0x0000000000974000-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 4248 Loader.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Loader.exepid process 4248 Loader.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
Loader.exedescription pid process target process PID 4248 wrote to memory of 724 4248 Loader.exe schtasks.exe PID 4248 wrote to memory of 724 4248 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/4248-0-0x00007FFCAC8A3000-0x00007FFCAC8A5000-memory.dmpFilesize
8KB
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memory/4248-1-0x0000000000650000-0x0000000000974000-memory.dmpFilesize
3.1MB
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memory/4248-2-0x00007FFCAC8A0000-0x00007FFCAD361000-memory.dmpFilesize
10.8MB
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memory/4248-3-0x0000000002C00000-0x0000000002C50000-memory.dmpFilesize
320KB
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memory/4248-4-0x000000001D6B0000-0x000000001D762000-memory.dmpFilesize
712KB
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memory/4248-5-0x00007FFCAC8A3000-0x00007FFCAC8A5000-memory.dmpFilesize
8KB
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memory/4248-6-0x00007FFCAC8A0000-0x00007FFCAD361000-memory.dmpFilesize
10.8MB