Analysis
- max time kernel
145s - max time network
152s - platform
windows7_x64 - resource
win7-20230831-en - resource tags
- submitted
05/10/2023, 13:00
General
- Target Tender ENQ.NO 6-59512.exe
- Size 711KB
- Sample231005-p8m2csda87
- SHA256 12028f36ac1d3cd2cfae4ed0d5d1bd20ccbd550f87d62dc1a91e6f5ca21d87d7
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.etasimali.com
-
Port
587
-
Username
-
Password
RECRUTEMENT@2023
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 1 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Drops file in System32 directory 1 IoCs
- 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 SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Tender ENQ.NO 6-59512.exe"C:\Users\Admin\AppData\Local\Temp\Tender ENQ.NO 6-59512.exe"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- 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\Tender ENQ.NO 6-59512.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Cab485.tmp
Tar4C7.tmp
System.dll
memory/2656-25-0x0000000072DD0000-0x0000000072E12000-memory.dmp
memory/2656-23-0x0000000072DD0000-0x0000000073E32000-memory.dmp
memory/2656-111-0x00000000348B0000-0x00000000348F0000-memory.dmp
memory/2656-19-0x0000000000530000-0x0000000001BB1000-memory.dmp
memory/2656-20-0x0000000077850000-0x00000000779F9000-memory.dmp
memory/2656-21-0x0000000000530000-0x0000000001BB1000-memory.dmp
memory/2656-22-0x0000000072DD0000-0x0000000073E32000-memory.dmp
memory/2656-110-0x00000000742B0000-0x000000007499E000-memory.dmp
memory/2656-24-0x0000000000530000-0x0000000001BB1000-memory.dmp
memory/2656-27-0x00000000348B0000-0x00000000348F0000-memory.dmp
memory/2656-26-0x00000000742B0000-0x000000007499E000-memory.dmp
memory/2996-16-0x00000000038A0000-0x0000000004F21000-memory.dmp
memory/2996-15-0x0000000077850000-0x00000000779F9000-memory.dmp
memory/2996-14-0x00000000038A0000-0x0000000004F21000-memory.dmp
memory/2996-17-0x0000000077A40000-0x0000000077B16000-memory.dmp
memory/2996-18-0x0000000074DA0000-0x0000000074DA6000-memory.dmp