Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
26/08/2026, 14:06
General
- Target f4a4dea4b46e7ae60fb9e58e0c871f1aba6cb5b053169a7e14959ded19b69f3e.exe
- Size 614KB
- Sample260826-repdfaen5x
- SHA256 f4a4dea4b46e7ae60fb9e58e0c871f1aba6cb5b053169a7e14959ded19b69f3e
Malware Config
Signatures
- Adds policy Run key to start application 2 TTPs 2 IoCs
- Creates a file in the Startup directory 1 TTPs 2 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.
- Deletes itself 1 IoCs
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 4 IoCs
- Drops file in Windows directory 2 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Modifies data under HKEY_USERS 26 IoCs
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 16 IoCs
- Suspicious use of AdjustPrivilegeToken 14 IoCs
- Suspicious use of FindShellTrayWindow 5 IoCs
- Suspicious use of SendNotifyMessage 3 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\f4a4dea4b46e7ae60fb9e58e0c871f1aba6cb5b053169a7e14959ded19b69f3e.exe"C:\Users\Admin\AppData\Local\Temp\f4a4dea4b46e7ae60fb9e58e0c871f1aba6cb5b053169a7e14959ded19b69f3e.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\svchost.exeC:\Windows\SysWOW64\svchost.exe -k netsvcs2⤵
- Adds policy Run key to start application
- Creates a file in the Startup directory
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\dllcache\srdelayed.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\dllcache\srdelayed.exe" "C:\Users\Admin\AppData\Local\Temp\f4a4dea4b46e7ae60fb9e58e0c871f1aba6cb5b053169a7e14959ded19b69f3e.exe"3⤵
- Deletes itself
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\svchost.exeC:\Windows\SysWOW64\svchost.exe -k netsvcs4⤵
- Adds policy Run key to start application
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
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C:\Windows\system32\efsui.exeefsui.exe /efs /keybackup1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\dllcache\srdelayed.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\dllcache\srdelayed.exe"1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
AppCache134322268022479665.txt
srdelayed.lnk
srdelayed.exe
srdelayed.lnk
memory/2804-45-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-53-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-95-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-94-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-61-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-737-0x0000000000220000-0x000000000022E000-memory.dmp
memory/2804-92-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-89-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-64-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-47-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-48-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-49-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-80-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-153-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-54-0x0000000000D20000-0x0000000000D21000-memory.dmp
memory/2804-57-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/2804-641-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/3044-637-0x000002547D580000-0x000002547D596000-memory.dmp
memory/3708-63-0x0000000000BB0000-0x0000000000C4F000-memory.dmp
memory/3820-0-0x0000000000D9D000-0x0000000000D9E000-memory.dmp
memory/3828-13-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/3828-37-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/3828-9-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/3828-10-0x0000000000630000-0x0000000000631000-memory.dmp
memory/3828-8-0x0000000000220000-0x000000000022E000-memory.dmp
memory/3828-2-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/3828-4-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/3828-7-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/3828-3-0x0000000000220000-0x00000000002CE000-memory.dmp
memory/4808-52-0x0000000000BB0000-0x0000000000C4F000-memory.dmp
memory/4808-44-0x0000000000BED000-0x0000000000BEE000-memory.dmp