asyncrat | a32ad92bc669d691f17c943761f30ebbdc17e85054595c648d78c1015ffcebb9

Virtualization/Sandbox Evasion

T1497

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

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	MailAcessCheckerbyxRisky.exe
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	svchost.exe

Executes dropped EXE 3 IoCs

pid	Process
1036	svchost.exe
532	MailAcess Checker by xRisky.exe
4212	ContainerRuntime.exe

Loads dropped DLL 6 IoCs

pid	Process
532	MailAcess Checker by xRisky.exe
532	MailAcess Checker by xRisky.exe
532	MailAcess Checker by xRisky.exe
532	MailAcess Checker by xRisky.exe
532	MailAcess Checker by xRisky.exe
532	MailAcess Checker by xRisky.exe

Themida packer 3 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/544-10-0x0000000000820000-0x00000000017D8000-memory.dmp	themida
behavioral2/memory/544-11-0x0000000000820000-0x00000000017D8000-memory.dmp	themida
behavioral2/memory/544-44-0x0000000000820000-0x00000000017D8000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	MailAcessCheckerbyxRisky.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
9	pastebin.com
10	pastebin.com

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
544	MailAcessCheckerbyxRisky.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 8 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ContainerRuntime.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MailAcessCheckerbyxRisky.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MailAcess Checker by xRisky.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
368	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

pid	Process
2452	schtasks.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
1036	svchost.exe
4212	ContainerRuntime.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1036	svchost.exe
Token: SeDebugPrivilege	4212	ContainerRuntime.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4212	ContainerRuntime.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 544 wrote to memory of 1036	544	MailAcessCheckerbyxRisky.exe	91
PID 544 wrote to memory of 1036	544	MailAcessCheckerbyxRisky.exe	91
PID 544 wrote to memory of 1036	544	MailAcessCheckerbyxRisky.exe	91
PID 544 wrote to memory of 532	544	MailAcessCheckerbyxRisky.exe	92
PID 544 wrote to memory of 532	544	MailAcessCheckerbyxRisky.exe	92
PID 544 wrote to memory of 532	544	MailAcessCheckerbyxRisky.exe	92
PID 1036 wrote to memory of 3260	1036	svchost.exe	93
PID 1036 wrote to memory of 3260	1036	svchost.exe	93
PID 1036 wrote to memory of 3260	1036	svchost.exe	93
PID 1036 wrote to memory of 1612	1036	svchost.exe	94
PID 1036 wrote to memory of 1612	1036	svchost.exe	94
PID 1036 wrote to memory of 1612	1036	svchost.exe	94
PID 1612 wrote to memory of 368	1612	cmd.exe	97
PID 1612 wrote to memory of 368	1612	cmd.exe	97
PID 1612 wrote to memory of 368	1612	cmd.exe	97
PID 3260 wrote to memory of 2452	3260	cmd.exe	98
PID 3260 wrote to memory of 2452	3260	cmd.exe	98
PID 3260 wrote to memory of 2452	3260	cmd.exe	98
PID 1612 wrote to memory of 4212	1612	cmd.exe	99
PID 1612 wrote to memory of 4212	1612	cmd.exe	99
PID 1612 wrote to memory of 4212	1612	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\MailAcessCheckerbyxRisky.exe
"C:\Users\Admin\AppData\Local\Temp\MailAcessCheckerbyxRisky.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:544
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1036
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ContainerRuntime" /tr '"C:\Users\Admin\AppData\Roaming\ContainerRuntime.exe"' & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3260
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "ContainerRuntime" /tr '"C:\Users\Admin\AppData\Roaming\ContainerRuntime.exe"'
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2452
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCD52.tmp.bat""
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1612
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:368
  - - C:\Users\Admin\AppData\Roaming\ContainerRuntime.exe
      "C:\Users\Admin\AppData\Roaming\ContainerRuntime.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4212
- C:\Users\Admin\AppData\Local\Temp\MailAcess Checker by xRisky.exe
  "C:\Users\Admin\AppData\Local\Temp\MailAcess Checker by xRisky.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

3

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Web Service