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Analysis
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max time kernel
121s -
max time network
138s -
platform
windows10-ltsc 2021_x64 -
resource
win10ltsc2021-20241023-en -
resource tags
arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system -
submitted
04/12/2024, 20:41
Static task
static1
General
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Target
Top4smm Dinero Ilimitado.zip
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Size
1.1MB
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MD5
bfa47aae21e145867fa2536f3adb0fbb
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SHA1
b7b6eaccdf32b323421b75ad8e4e420a4527b151
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SHA256
a9fc07683b0c89a1a3cfba37fd4548e6b28ebf334dca8cf79d4edada41ece724
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SHA512
8ca4870f1949aaf6476b3ed18bfa5764110184242d0ae2d631b28b618cb167ec4de3267776be67a6bfd1de66e5f777fc75d25a8de2c75ef16578637f514906ae
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SSDEEP
24576:+NEcxEieY4MkUNZfAzaSbhDmRsYyAo1GMvTSplXql0pDAkddsid2g4:6Ecx5UUnfW9qRU4E2lXSH0sidD4
Malware Config
Extracted
quasar
1.4.1
Office04
azxq0ap.localto.net:3425
e51e2b65-e963-4051-9736-67d57ed46798
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encryption_key
AEA258EF65BF1786F0F767C0BE2497ECC304C46F
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install_name
WindowsUpdate.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
WindowsUpdate
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 2 IoCs
resource yara_rule behavioral1/files/0x0003000000000343-2.dat family_quasar behavioral1/memory/5064-5-0x00000000006A0000-0x00000000009D2000-memory.dmp family_quasar -
Executes dropped EXE 2 IoCs
pid Process 5064 Top4smm Dinero Ilimitado.exe 3720 WindowsUpdate.exe -
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 4676 schtasks.exe 3296 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeRestorePrivilege 3856 7zFM.exe Token: 35 3856 7zFM.exe Token: SeSecurityPrivilege 3856 7zFM.exe Token: SeDebugPrivilege 5064 Top4smm Dinero Ilimitado.exe Token: SeDebugPrivilege 3720 WindowsUpdate.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 3856 7zFM.exe 3856 7zFM.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3720 WindowsUpdate.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 5064 wrote to memory of 4676 5064 Top4smm Dinero Ilimitado.exe 95 PID 5064 wrote to memory of 4676 5064 Top4smm Dinero Ilimitado.exe 95 PID 5064 wrote to memory of 3720 5064 Top4smm Dinero Ilimitado.exe 97 PID 5064 wrote to memory of 3720 5064 Top4smm Dinero Ilimitado.exe 97 PID 3720 wrote to memory of 3296 3720 WindowsUpdate.exe 98 PID 3720 wrote to memory of 3296 3720 WindowsUpdate.exe 98 -
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:\Program Files\7-Zip\7zFM.exe"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Top4smm Dinero Ilimitado.zip"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:3856
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C:\Users\Admin\Desktop\Top4smm Dinero Ilimitado.exe"C:\Users\Admin\Desktop\Top4smm Dinero Ilimitado.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5064 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
PID:4676
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C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe"C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3720 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
PID:3296
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.2MB
MD574474ce327c2d8e2b74eba981a7e3249
SHA148544696b4ce7c96559a791efb58ec7481092454
SHA25646ca3722c1851d6a68aea45c19e64a4c735eb236403e172422d02bbff4e35cca
SHA5120c5b75305b19e0dcaacb9f3df556cdb136c002a5732625cb096fdd0a69e4a6a4b96507bb2948b847e2726d98e424462a237e0c0cecb1210c45cef52c7c1accc1