Analysis
- max time kernel
141s - max time network
148s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
21/07/2023, 06:37
General
- Target Maersk Shipment Changed_xls.exe
- Size 312KB
- Sample230721-hdgsjacd28
- SHA256 73d386ff784ebd8adfb9fe2cede484e4662ef4a36e45421164046123938f252f
Score
10/10
Malware Config
Signatures
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Loads dropped DLL 1 IoCs
- UPX packed file 5 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Maersk Shipment Changed_xls.exe"C:\Users\Admin\AppData\Local\Temp\Maersk Shipment Changed_xls.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Maersk Shipment Changed_xls.exe"C:\Users\Admin\AppData\Local\Temp\Maersk Shipment Changed_xls.exe"2⤵
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1596 -s 5163⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1596 -ip 15961⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
zaieppoh.dll
memory/1596-140-0x0000000000400000-0x0000000000489000-memory.dmp
memory/1596-142-0x0000000000400000-0x0000000000489000-memory.dmp
memory/1596-144-0x0000000000400000-0x0000000000489000-memory.dmp
memory/1596-146-0x0000000000400000-0x0000000000489000-memory.dmp
memory/1596-147-0x0000000000400000-0x0000000000489000-memory.dmp
memory/3488-138-0x0000000074A80000-0x0000000074A90000-memory.dmp
memory/3488-143-0x0000000074A80000-0x0000000074A90000-memory.dmp