Analysis
- max time kernel
142s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20230915-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 5 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
System.dll
memory/772-23-0x0000000000700000-0x0000000001D81000-memory.dmp
memory/772-25-0x00000000726F0000-0x0000000072EA0000-memory.dmp
memory/772-36-0x0000000035600000-0x000000003560A000-memory.dmp
memory/772-35-0x0000000035640000-0x00000000356D2000-memory.dmp
memory/772-17-0x0000000000700000-0x0000000001D81000-memory.dmp
memory/772-18-0x0000000077EB8000-0x0000000077EB9000-memory.dmp
memory/772-19-0x0000000000700000-0x0000000001D81000-memory.dmp
memory/772-20-0x0000000077ED5000-0x0000000077ED6000-memory.dmp
memory/772-21-0x0000000073A30000-0x0000000074C84000-memory.dmp
memory/772-26-0x00000000349A0000-0x0000000034F44000-memory.dmp
memory/772-34-0x0000000031EF0000-0x0000000031F00000-memory.dmp
memory/772-24-0x0000000073A30000-0x0000000073A72000-memory.dmp
memory/772-33-0x00000000726F0000-0x0000000072EA0000-memory.dmp
memory/772-27-0x0000000031EF0000-0x0000000031F00000-memory.dmp
memory/772-28-0x0000000034370000-0x00000000343D6000-memory.dmp
memory/772-29-0x0000000077E31000-0x0000000077F51000-memory.dmp
memory/772-30-0x0000000035210000-0x0000000035260000-memory.dmp
memory/772-31-0x0000000035300000-0x000000003539C000-memory.dmp
memory/4664-13-0x0000000004870000-0x0000000005EF1000-memory.dmp
memory/4664-14-0x0000000077E31000-0x0000000077F51000-memory.dmp
memory/4664-16-0x0000000074C90000-0x0000000074C96000-memory.dmp
memory/4664-15-0x0000000004870000-0x0000000005EF1000-memory.dmp