Analysis
- max time kernel
147s - max time network
154s - platform
windows7_x64 - resource
win7-20230712-en - resource tags
- submitted
22/08/2023, 07:51
General
- Target Akbank Hesap Özetiniz_PDF.exe
- Size 352KB
- Sample230822-jpvzzaag86
- SHA256 236c73a241d229cc820b4fa2aa914403151deb84b90939ac4760460fc107dda4
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.eprl.pt
-
Port
587
-
Username
-
Password
6EO##P9jkTTY
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Checks QEMU agent file 2 TTPs 2 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
- Loads dropped DLL 2 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Akbank Hesap Özetiniz_PDF.exe"C:\Users\Admin\AppData\Local\Temp\Akbank Hesap Özetiniz_PDF.exe"1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"C:\Users\Admin\AppData\Local\Temp\Akbank Hesap Özetiniz_PDF.exe"2⤵
- Checks QEMU agent file
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
System.dll
System.dll
memory/2236-68-0x0000000002570000-0x00000000032FD000-memory.dmp
memory/2236-69-0x0000000002570000-0x00000000032FD000-memory.dmp
memory/2236-70-0x0000000077020000-0x00000000771C9000-memory.dmp
memory/2236-71-0x0000000077210000-0x00000000772E6000-memory.dmp
memory/2236-72-0x0000000010000000-0x0000000010006000-memory.dmp
memory/2364-73-0x0000000000B70000-0x00000000018FD000-memory.dmp
memory/2364-74-0x0000000077020000-0x00000000771C9000-memory.dmp
memory/2364-75-0x0000000000B70000-0x00000000018FD000-memory.dmp
memory/2364-95-0x0000000072650000-0x00000000736B2000-memory.dmp
memory/2364-96-0x0000000000B70000-0x00000000018FD000-memory.dmp
memory/2364-97-0x0000000072650000-0x0000000072694000-memory.dmp
memory/2364-98-0x0000000071F60000-0x000000007264E000-memory.dmp
memory/2364-99-0x0000000034520000-0x0000000034560000-memory.dmp
memory/2364-101-0x0000000071F60000-0x000000007264E000-memory.dmp
memory/2364-103-0x0000000034520000-0x0000000034560000-memory.dmp