Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
30/07/2026, 23:20
General
- Target 2026-07-30_fdf6094d6387205ce3d30dca4b4a06a2_akira_cobalt-strike.exe
- Size 2.3MB
- Sample260730-3blc6ahb63
- SHA256 526bc8ba572d95f794e2785fc21ed6b7437bf516fd6a3106c6d4ffd94eb80534
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 3 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\2026-07-30_fdf6094d6387205ce3d30dca4b4a06a2_akira_cobalt-strike.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-30_fdf6094d6387205ce3d30dca4b4a06a2_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
- 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 /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
-
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
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
OfficeUpdater.exe
memory/2748-17-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-18-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-3-0x000001FDA9C50000-0x000001FDA9C6A000-memory.dmp
memory/2748-5-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-4-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-6-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-7-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-8-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-9-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-10-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-1-0x000001FDC2550000-0x000001FDC2646000-memory.dmp
memory/2748-12-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-13-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-14-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-16-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-0-0x00007FFC7EEDF000-0x00007FFC7EEE0000-memory.dmp
memory/2748-2-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-15-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-11-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2748-20-0x00007FF6A52F0000-0x00007FF6A54D6000-memory.dmp
memory/2748-21-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2948-34-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2948-23-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2948-24-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2948-25-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2948-28-0x000001DE7B9A0000-0x000001DE7B9F0000-memory.dmp
memory/2948-30-0x000001DE7B950000-0x000001DE7B99E000-memory.dmp
memory/2948-22-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2948-31-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2948-32-0x00007FF7CBE10000-0x00007FF7CBFF6000-memory.dmp
memory/2948-33-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/2948-29-0x000001DE7D510000-0x000001DE7D5C2000-memory.dmp
memory/2948-36-0x00007FFC7ED50000-0x00007FFC7F6F4000-memory.dmp
memory/3012-27-0x00007FF7CBE10000-0x00007FF7CBFF6000-memory.dmp