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Analysis
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max time kernel
32s -
max time network
45s -
platform
windows10-ltsc 2021_x64 -
resource
win10ltsc2021-20241023-en -
resource tags
arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system -
submitted
06/12/2024, 02:22
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/0x0028000000045049-2.dat family_quasar behavioral1/memory/4380-5-0x0000000000D70000-0x00000000010A2000-memory.dmp family_quasar -
Executes dropped EXE 4 IoCs
pid Process 4380 Top4smm Dinero Ilimitado.exe 3140 Top4smm Dinero Ilimitado.exe 5008 WindowsUpdate.exe 3460 WindowsUpdate.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1860 schtasks.exe 4772 schtasks.exe 2400 schtasks.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 876 7zFM.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
description pid Process Token: SeRestorePrivilege 876 7zFM.exe Token: 35 876 7zFM.exe Token: SeSecurityPrivilege 876 7zFM.exe Token: SeDebugPrivilege 4380 Top4smm Dinero Ilimitado.exe Token: SeDebugPrivilege 3140 Top4smm Dinero Ilimitado.exe Token: SeDebugPrivilege 5008 WindowsUpdate.exe Token: SeDebugPrivilege 3460 WindowsUpdate.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 876 7zFM.exe 876 7zFM.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 5008 WindowsUpdate.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 4380 wrote to memory of 1860 4380 Top4smm Dinero Ilimitado.exe 93 PID 4380 wrote to memory of 1860 4380 Top4smm Dinero Ilimitado.exe 93 PID 3140 wrote to memory of 4772 3140 Top4smm Dinero Ilimitado.exe 95 PID 3140 wrote to memory of 4772 3140 Top4smm Dinero Ilimitado.exe 95 PID 4380 wrote to memory of 5008 4380 Top4smm Dinero Ilimitado.exe 97 PID 4380 wrote to memory of 5008 4380 Top4smm Dinero Ilimitado.exe 97 PID 3140 wrote to memory of 3460 3140 Top4smm Dinero Ilimitado.exe 98 PID 3140 wrote to memory of 3460 3140 Top4smm Dinero Ilimitado.exe 98 PID 5008 wrote to memory of 2400 5008 WindowsUpdate.exe 99 PID 5008 wrote to memory of 2400 5008 WindowsUpdate.exe 99 -
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 behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:876
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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:4380 -
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:1860
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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:5008 -
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:2400
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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:3140 -
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:4772
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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
PID:3460
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5b08c36ce99a5ed11891ef6fc6d8647e9
SHA1db95af417857221948eb1882e60f98ab2914bf1d
SHA256cc9248a177495f45ec70b86c34fc5746c56730af36ace98ac7eb365dbafda674
SHA51207e62581eace395b0a9699d727761648103180c21155d84ea09140f9e1c9690705c419118545aa67a564334bbde32710225fe3aa92b0b4b4210cb91f0058b1ea
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Filesize
3.2MB
MD574474ce327c2d8e2b74eba981a7e3249
SHA148544696b4ce7c96559a791efb58ec7481092454
SHA25646ca3722c1851d6a68aea45c19e64a4c735eb236403e172422d02bbff4e35cca
SHA5120c5b75305b19e0dcaacb9f3df556cdb136c002a5732625cb096fdd0a69e4a6a4b96507bb2948b847e2726d98e424462a237e0c0cecb1210c45cef52c7c1accc1