Analysis
- max time kernel
153s - max time network
161s - platform
windows10_x64 - resource
win10v20210408 - submitted
30/08/2021, 13:17
General
- Target 05d2a901f74fcff6cb090a9a34be5f2b.exe
- Size 88KB
- Sample210830-atlr5tn1dn
- SHA256 fc4e44c0b91ce5f076bab43f739c4100de70423b9e867d2f34ff265e37596bd9
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\05d2a901f74fcff6cb090a9a34be5f2b.exe"C:\Users\Admin\AppData\Local\Temp\05d2a901f74fcff6cb090a9a34be5f2b.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\05d2a901f74fcff6cb090a9a34be5f2b.exe"C:\Users\Admin\AppData\Local\Temp\05d2a901f74fcff6cb090a9a34be5f2b.exe"2⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/808-116-0x00000000022F0000-0x0000000002303000-memory.dmp
memory/808-118-0x00000000777D0000-0x000000007795E000-memory.dmp
memory/808-117-0x00007FF92B9B0000-0x00007FF92BB8B000-memory.dmp
memory/808-122-0x00000000777D0000-0x000000007795E000-memory.dmp
memory/3820-120-0x0000000000400000-0x0000000000553000-memory.dmp
memory/3820-121-0x0000000000401000-0x00000000004FD000-memory.dmp
memory/3820-123-0x0000000000560000-0x0000000000660000-memory.dmp
memory/3820-125-0x00000000777D0000-0x000000007795E000-memory.dmp
memory/3820-124-0x00007FF92B9B0000-0x00007FF92BB8B000-memory.dmp
memory/3820-126-0x0000000000401000-0x0000000000541000-memory.dmp