Analysis
- max time kernel
149s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
20/08/2026, 06:12
General
- Target r843.exe
- Size 287KB
- Sample260820-gybatafl7t
- SHA256 4f92f1b658856b2662100c26dcd5f81525a74482b4fdebb16923ec27234f0a7e
Malware Config
Extracted
-
remus_stealer
-
http://vexdico.shop:8539/reports
-
http://zakuiru.shop:9048/events
-
http://kupzovo.shop:7567/sessions
Signatures
- Family: Remus
Remus is a stealer written in C++.
- Creates a file in the Startup directory 1 TTPs 3 IoCs
A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Registers new Windows logon scripts automatically executed at logon. 1 TTPs 2 IoCs
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Adds Run key to start application 2 TTPs 4 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 20 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\r843.exe"C:\Users\Admin\AppData\Local\Temp\r843.exe"1⤵
- Creates a file in the Startup directory
- Registers new Windows logon scripts automatically executed at logon.
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exeschtasks.exe /create /tn "SecurityHealthService" /xml "C:\Users\Admin\AppData\Local\Temp\~st0E584D7D.xml" /f2⤵
- Scheduled Task/Job: Scheduled Task
-
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C:\Windows\SYSTEM32\schtasks.exeschtasks.exe /create /tn "WindowsSecurityHealth" /xml "C:\Users\Admin\AppData\Local\Temp\~st0E584DDA.xml" /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\r843.exeC:\Users\Admin\AppData\Local\Temp\r843.exe1⤵
- Creates a file in the Startup directory
- Registers new Windows logon scripts automatically executed at logon.
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SecurityHealthService" /xml "C:\Users\Admin\AppData\Local\Temp\~st0E585B1D.xml" /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "WindowsSecurityHealth" /xml "C:\Users\Admin\AppData\Local\Temp\~st0E585ACC.xml" /f2⤵
- Scheduled Task/Job: Scheduled Task
-
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Boot or Logon Initialization Scripts
1Logon Script (Windows)
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Boot or Logon Initialization Scripts
1Logon Script (Windows)
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
~st0E584D7D.xml
~st0E584DDA.xml
~st0E585ACC.xml
r843.exe
memory/1600-15-0x000001E78D560000-0x000001E78D561000-memory.dmp
memory/1600-12-0x000001E78D530000-0x000001E78D531000-memory.dmp
memory/1600-21-0x000001E78D5C0000-0x000001E78D5C1000-memory.dmp
memory/1600-20-0x000001E78D5B0000-0x000001E78D5B1000-memory.dmp
memory/1600-19-0x000001E78D5A0000-0x000001E78D5A1000-memory.dmp
memory/1600-18-0x000001E78D590000-0x000001E78D591000-memory.dmp
memory/1600-17-0x000001E78D580000-0x000001E78D581000-memory.dmp
memory/1600-16-0x000001E78D570000-0x000001E78D571000-memory.dmp
memory/1600-23-0x000001E78D5E0000-0x000001E78D5E1000-memory.dmp
memory/1600-14-0x000001E78D550000-0x000001E78D551000-memory.dmp
memory/1600-13-0x000001E78D540000-0x000001E78D541000-memory.dmp
memory/1600-22-0x000001E78D5D0000-0x000001E78D5D1000-memory.dmp
memory/1600-11-0x000001E78D520000-0x000001E78D521000-memory.dmp
memory/1600-10-0x000001E78D500000-0x000001E78D501000-memory.dmp
memory/1600-9-0x000001E78D4E0000-0x000001E78D4E1000-memory.dmp
memory/1600-8-0x000001E78D490000-0x000001E78D491000-memory.dmp
memory/1600-26-0x0000000140000000-0x0000000140200000-memory.dmp
memory/1600-6-0x000001E78BBA0000-0x000001E78BBA1000-memory.dmp
memory/1600-5-0x000001E78BB90000-0x000001E78BB91000-memory.dmp
memory/1600-24-0x000001E78D5F0000-0x000001E78D5F1000-memory.dmp
memory/1600-7-0x000001E78D480000-0x000001E78D481000-memory.dmp