Analysis
- max time kernel
152s - max time network
152s - platform
windows10_x64 - resource
win10-en-20210920 - submitted
27/09/2021, 08:32
General
- Target 5f09b37b56cb003804dca1a778799746.exe
- Size 192KB
- Sample210927-kfas4sgbe5
- SHA256 1f2f9b357003d7816259c172bff00bc8be6305247a94594de4eb9a7e7ecbb385
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Checks QEMU agent file 2 TTPs 2 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
- Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\5f09b37b56cb003804dca1a778799746.exe"C:\Users\Admin\AppData\Local\Temp\5f09b37b56cb003804dca1a778799746.exe"1⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\5f09b37b56cb003804dca1a778799746.exe"C:\Users\Admin\AppData\Local\Temp\5f09b37b56cb003804dca1a778799746.exe"2⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/2168-117-0x00000000022B0000-0x00000000022C3000-memory.dmp
memory/2168-121-0x00007FFBCC8E0000-0x00007FFBCCABB000-memory.dmp
memory/2168-122-0x0000000077A30000-0x0000000077BBE000-memory.dmp
memory/2168-123-0x0000000077A30000-0x0000000077BBE000-memory.dmp
memory/2616-119-0x0000000000400000-0x0000000000553000-memory.dmp
memory/2616-120-0x0000000000401000-0x00000000004FD000-memory.dmp
memory/2616-124-0x0000000000560000-0x0000000000660000-memory.dmp
memory/2616-125-0x00007FFBCC8E0000-0x00007FFBCCABB000-memory.dmp
memory/2616-126-0x0000000077A30000-0x0000000077BBE000-memory.dmp
memory/2616-127-0x0000000000401000-0x0000000000541000-memory.dmp