Analysis
- max time kernel
128s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
05/02/2023, 15:31
General
- Target tmp.exe
- Size 502KB
- Sample230205-syb3wsaa43
- SHA256 741a3f8b91ad8ef7bf2936bafddb95200b0f3083a6933d1d82c278baaa6ec9c7
Malware Config
Extracted
-
quasar
-
1.4.0
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Office04
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flingmodder-53370.portmap.io:53370
-
c16cce68-0a86-440c-89b1-c088c1c8b4cb
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encryption_key
9BFDFBA45AE2C2C16DA4EEEA02438784B89CACC0
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install_name
svchost.exe
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log_directory
Logs
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reconnect_delay
3000
-
startup_key
svchost
-
subdirectory
windows
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 3 IoCs
- Executes dropped EXE 1 IoCs
- Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "svchost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\tmp.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Roaming\windows\svchost.exe"C:\Users\Admin\AppData\Roaming\windows\svchost.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "svchost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\windows\svchost.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
svchost.exe
svchost.exe
memory/4276-139-0x00007FFB80490000-0x00007FFB80F51000-memory.dmp
memory/4276-141-0x000000001BF50000-0x000000001BFA0000-memory.dmp
memory/4276-142-0x000000001DE90000-0x000000001DF42000-memory.dmp
memory/4276-143-0x00007FFB80490000-0x00007FFB80F51000-memory.dmp
memory/4280-132-0x0000000000D90000-0x0000000000E14000-memory.dmp
memory/4280-133-0x00007FFB80490000-0x00007FFB80F51000-memory.dmp
memory/4280-138-0x00007FFB80490000-0x00007FFB80F51000-memory.dmp