5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	City.exe

Blocklisted process makes network request 1 IoCs

flow	pid	Process
22	1116	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
4512	City.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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	City.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	City.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.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-1-5-21-3751123196-3323558407-1869646069-1000\Software\Wine	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Wine	City.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
23	ip-api.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2316	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe
4512	City.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	City.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	City.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000_Classes\Local Settings	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2316	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe
2316	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe
4512	City.exe
4512	City.exe

Suspicious use of FindShellTrayWindow 12 IoCs

pid	Process
4512	City.exe
4512	City.exe
4512	City.exe
4512	City.exe
4512	City.exe
4512	City.exe
4512	City.exe
4512	City.exe
4512	City.exe
4512	City.exe
4512	City.exe
4512	City.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 4512	2316	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe	81
PID 2316 wrote to memory of 4512	2316	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe	81
PID 2316 wrote to memory of 4512	2316	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe	81
PID 2316 wrote to memory of 1116	2316	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe	82
PID 2316 wrote to memory of 1116	2316	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe	82
PID 2316 wrote to memory of 1116	2316	5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe	82

C:\Users\Admin\AppData\Local\Temp\5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe
"C:\Users\Admin\AppData\Local\Temp\5f3e09ba81e92e83dd35f92877cf7d5ed25a7791c5b487679fe9c1dc13d48403.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2316
- C:\ProgramData\Newu\City.exe
  C:\ProgramData\Newu\City.exe
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Executes dropped EXE
  - Checks BIOS information in registry
  - Identifies Wine through registry keys
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  PID:4512
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\ProgramData\ipras.vbs"
  2⤵
  - Blocklisted process makes network request
  PID:1116

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

Web Service

T1102

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion