dcrat | adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	dwm.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	dwm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	dwm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe

Executes dropped EXE 1 IoCs

pid	Process
2656	dwm.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	dwm.exe

Loads dropped DLL 2 IoCs

pid	Process
2408	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
2408	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\Documents and Settings\\dwm.exe\""	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:\\Windows\\System32\\dxtmsft\\dwm.exe\""	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\System32\\main\\csrss.exe\""	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\System32\\sbunattend\\csrss.exe\""	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Idle = "\"C:\\ProgramData\\Favorites\\Idle.exe\""	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Windows\\Registration\\CRMLog\\dllhost.exe\""	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dxtmsft\6cb0b6c459d5d3455a3da700e713f2e2529862ff	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
File created	C:\Windows\SysWOW64\main\csrss.exe	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
File created	C:\Windows\SysWOW64\main\886983d96e3d3e31032c679b2d4ea91b6c05afef	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
File created	C:\Windows\SysWOW64\sbunattend\csrss.exe	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
File created	C:\Windows\SysWOW64\sbunattend\886983d96e3d3e31032c679b2d4ea91b6c05afef	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
File created	C:\Windows\SysWOW64\dxtmsft\dwm.exe	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2408	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
2656	dwm.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Registration\CRMLog\dllhost.exe	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
File opened for modification	C:\Windows\Registration\CRMLog\dllhost.exe	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
File created	C:\Windows\Registration\CRMLog\5940a34987c99120d96dace90a3f93f329dcad63	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dwm.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
2632	schtasks.exe
2760	schtasks.exe
2640	schtasks.exe
2608	schtasks.exe
2672	schtasks.exe
2856	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2408	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
2408	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
2656	dwm.exe
2656	dwm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2408	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
Token: SeDebugPrivilege	2656	dwm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 2656	2408	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe	35
PID 2408 wrote to memory of 2656	2408	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe	35
PID 2408 wrote to memory of 2656	2408	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe	35
PID 2408 wrote to memory of 2656	2408	adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe	35

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.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe
"C:\Users\Admin\AppData\Local\Temp\adebff4c705c3b2f33f51042bdba1094f29d33f24b456ddb1465be3f7f80b3ca.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Documents and Settings\dwm.exe
  "C:\Documents and Settings\dwm.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2656

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\Registration\CRMLog\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2856

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Documents and Settings\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2632

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\System32\dxtmsft\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2760

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\System32\main\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2640

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\System32\sbunattend\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2608

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\ProgramData\Favorites\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Query Registry

4

System Information Discovery

2

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

2