Analysis
- max time kernel
118s - max time network
142s - platform
windows7_x64 - resource
win7-20240704-en - resource tags
- submitted
18/08/2024, 12:44
General
- Target a3fc86696512a68337f2f98fb7d4dbb5.exe
- Size 4.1MB
- Sample240818-pygrlatele
- SHA256 602d6da9c868e03a403ab4df6704d42cc94d8b960fb5fd38575be1a5d2da327c
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Drops startup file 1 IoCs
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 3 IoCs
- Themida packer 11 IoCs
Detects Themida, an advanced Windows software protection system.
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 23 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\a3fc86696512a68337f2f98fb7d4dbb5.exe"C:\Users\Admin\AppData\Local\Temp\a3fc86696512a68337f2f98fb7d4dbb5.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /RU "Admin" /tr "C:\ProgramData\jewkkwnf\jewkkwnf.exe" /tn "jewkkwnf HR" /sc HOURLY /rl HIGHEST2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /RU "Admin" /tr "C:\ProgramData\jewkkwnf\jewkkwnf.exe" /tn "jewkkwnf LG" /sc ONLOGON /rl HIGHEST2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\a3fc86696512a68337f2f98fb7d4dbb5.exe"C:\Users\Admin\AppData\Local\Temp\a3fc86696512a68337f2f98fb7d4dbb5.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\a3fc86696512a68337f2f98fb7d4dbb5.exe"C:\Users\Admin\AppData\Local\Temp\a3fc86696512a68337f2f98fb7d4dbb5.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
jewkkwnf.exe
a3fc86696512a68337f2f98fb7d4dbb5.exe
PowerExpertNNT.lnk
memory/2460-10-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-17-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-16-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-15-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-14-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-13-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-12-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-11-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-9-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-8-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-7-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-6-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-5-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-4-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-3-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-2-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-1-0x0000000075051000-0x0000000075052000-memory.dmp
memory/2460-0-0x0000000000850000-0x00000000014CE000-memory.dmp
memory/2460-30-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-29-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-28-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-27-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-26-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-25-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-24-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-23-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-22-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-40-0x0000000000350000-0x0000000000360000-memory.dmp
memory/2460-32-0x0000000000850000-0x00000000014CE000-memory.dmp
memory/2460-31-0x0000000000850000-0x00000000014CE000-memory.dmp
memory/2460-21-0x0000000000850000-0x00000000014CE000-memory.dmp
memory/2460-19-0x0000000000850000-0x00000000014CE000-memory.dmp
memory/2460-18-0x0000000000850000-0x00000000014CE000-memory.dmp
memory/2460-20-0x0000000000850000-0x00000000014CE000-memory.dmp
memory/2460-41-0x0000000000850000-0x00000000014CE000-memory.dmp
memory/2460-42-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-43-0x0000000075051000-0x0000000075052000-memory.dmp
memory/2460-44-0x0000000000850000-0x00000000014CE000-memory.dmp
memory/2460-45-0x0000000000350000-0x0000000000360000-memory.dmp
memory/2460-66-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-65-0x0000000000850000-0x00000000014CE000-memory.dmp
memory/2460-64-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2460-153-0x0000000075040000-0x0000000075150000-memory.dmp
memory/2988-67-0x0000000000DE0000-0x00000000013D8000-memory.dmp
memory/2988-68-0x00000000057A0000-0x00000000058D8000-memory.dmp
memory/2988-69-0x00000000007A0000-0x00000000007BC000-memory.dmp
memory/2988-87-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-125-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-123-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-121-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-119-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-117-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-115-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-113-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-111-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-109-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-107-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-106-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-103-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-102-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-100-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-98-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-96-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-94-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-91-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-89-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-85-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-83-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-81-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-79-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-77-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-76-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-73-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-71-0x00000000007A0000-0x00000000007B5000-memory.dmp
memory/2988-70-0x00000000007A0000-0x00000000007B5000-memory.dmp