Analysis
- max time kernel
151s - max time network
177s - platform
windows7_x64 - resource
win7v20210408 - submitted
09/08/2021, 05:17
General
- Target Extracto Serfinanza_0187651_85843_53171713968181210_627706_6896370833026759848_941162789707586143.exe
- Size 116KB
- Sample210809-b8n35eby3a
- SHA256 d4d30acde6fa4db431b90817911b44d21c65fc1fa72744625bccafe3899869bc
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
- Remcos
Remcos is a closed-source remote control and surveillance software.
- UAC bypass 3 TTPs
- Checks QEMU agent file 2 TTPs 2 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
- Adds Run key to start application 2 TTPs 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Modifies registry key 1 TTPs 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 16 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Extracto Serfinanza_0187651_85843_53171713968181210_627706_6896370833026759848_941162789707586143.exe"C:\Users\Admin\AppData\Local\Temp\Extracto Serfinanza_0187651_85843_53171713968181210_627706_6896370833026759848_941162789707586143.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:\Program Files (x86)\internet explorer\ieinstal.exe"C:\Users\Admin\AppData\Local\Temp\Extracto Serfinanza_0187651_85843_53171713968181210_627706_6896370833026759848_941162789707586143.exe"2⤵
- Checks QEMU agent file
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeC:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f4⤵
- Modifies registry key
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/748-67-0x0000000076F30000-0x00000000770D9000-memory.dmp
memory/748-64-0x0000000075451000-0x0000000075453000-memory.dmp
memory/748-62-0x00000000003A0000-0x00000000003B5000-memory.dmp
memory/748-68-0x0000000077110000-0x0000000077290000-memory.dmp
memory/748-69-0x0000000077120000-0x00000000771F6000-memory.dmp
memory/1304-74-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-86-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-73-0x0000000077120000-0x00000000771F6000-memory.dmp
memory/1304-75-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-76-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-77-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-78-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-79-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-81-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-82-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-83-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-65-0x00000000001F0000-0x00000000002F0000-memory.dmp
memory/1304-84-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-100-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-72-0x0000000076F30000-0x00000000770D9000-memory.dmp
memory/1304-87-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-88-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-89-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-90-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-91-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-92-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-93-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-94-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-95-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-96-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-97-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-98-0x0000000000400000-0x0000000000553000-memory.dmp
memory/1304-99-0x0000000000400000-0x0000000000553000-memory.dmp