Analysis
- max time kernel
148s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
27/07/2026, 01:22
General
- Target 2026-07-27_8dfdbf247add372440a36485f3fb5fab_akira_cobalt-strike.exe
- Size 2.3MB
- Sample260727-brmsdatfmg
- SHA256 bd3ab56f2d56032d7ed9665bc42eac365943e80cb70ae2d7a1a1e2f32cb4c284
Malware Config
Extracted
-
quasar
-
key_salt
5a23f8394640cb9e40658446a04c0bbae82dc93d0470e1b2a406a90fd2520382
-
reconnect_delay
2997
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Detects Windows executables referencing non-Windows User-Agents 1 IoCs
- Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs
- Detects executables manipulated with Fody 1 IoCs
- Executes dropped EXE 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
- 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
-
C:\Users\Admin\AppData\Local\Temp\2026-07-27_8dfdbf247add372440a36485f3fb5fab_akira_cobalt-strike.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-27_8dfdbf247add372440a36485f3fb5fab_akira_cobalt-strike.exe"1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Microsoft Updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\MicrosoftOffice\OfficeUpdater.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\MicrosoftOffice\OfficeUpdater.exe"C:\Users\Admin\AppData\Roaming\MicrosoftOffice\OfficeUpdater.exe"2⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Roaming\MicrosoftOffice\OfficeUpdater.exeC:\Users\Admin\AppData\Roaming\MicrosoftOffice\OfficeUpdater.exe1⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Microsoft Updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\MicrosoftOffice\OfficeUpdater.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
OfficeUpdater.exe
memory/2052-29-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-34-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-24-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-44-0x00007FF76D5A0000-0x00007FF76D786000-memory.dmp
memory/2052-23-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-26-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-35-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-38-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-39-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-37-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-46-0x00007FF76D5A0000-0x00007FF76D786000-memory.dmp
memory/2052-28-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-30-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-33-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-32-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-31-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-36-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-25-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-27-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/2052-47-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4128-43-0x0000026EC6220000-0x0000026EC626E000-memory.dmp
memory/4128-42-0x0000026EC66D0000-0x0000026EC6782000-memory.dmp
memory/4128-41-0x0000026EC65C0000-0x0000026EC6610000-memory.dmp
memory/4128-45-0x00007FF76D5A0000-0x00007FF76D786000-memory.dmp
memory/4932-12-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-22-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-21-0x00007FF6AA2B0000-0x00007FF6AA496000-memory.dmp
memory/4932-19-0x00007FF6AA2B0000-0x00007FF6AA496000-memory.dmp
memory/4932-18-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-17-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-16-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-15-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-14-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-13-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-11-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-1-0x00007FFC72F2F000-0x00007FFC72F30000-memory.dmp
memory/4932-10-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-9-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-8-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-7-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-6-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-5-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-4-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-3-0x00007FFC72DA0000-0x00007FFC73744000-memory.dmp
memory/4932-2-0x000001D6D8580000-0x000001D6D859A000-memory.dmp
memory/4932-0-0x000001D6DA0D0000-0x000001D6DA1C6000-memory.dmp