hawkeye | 733067292220b3bd95580abf1650be726e0c9713a902ed44db18f51f16c6fdab

System Information Discovery

Processes:

733067292220b3bd95580abf1650be726e0c9713a902ed44db18f51f16c6fdab.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	733067292220b3bd95580abf1650be726e0c9713a902ed44db18f51f16c6fdab.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	vbc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

installutil.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe"	installutil.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

36 whatismyipaddress.com
39 whatismyipaddress.com

flow	ioc
36	whatismyipaddress.com
39	whatismyipaddress.com

Suspicious use of SetThreadContext 3 IoCs

Processes:

installutil.exeinstallutil.exe

description	pid	process	target process
PID 4676 set thread context of 1636	4676	installutil.exe	installutil.exe
PID 1636 set thread context of 4376	1636	installutil.exe	vbc.exe
PID 1636 set thread context of 2344	1636	installutil.exe	vbc.exe

Drops file in Windows directory 1 IoCs

Processes:

dw20.exe

description ioc process

File created C:\Windows\AppCompat\Programs\Amcache.hve.tmp dw20.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	dw20.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

System Information Discovery

Processes:

dw20.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

Processes:

dw20.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

installutil.exevbc.exeinstallutil.exe

pid process

4676 installutil.exe
4676 installutil.exe
2344 vbc.exe
2344 vbc.exe
1636 installutil.exe

pid	process
4676	installutil.exe
4676	installutil.exe
2344	vbc.exe
2344	vbc.exe
1636	installutil.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

installutil.exeinstallutil.exedw20.exe

description	pid	process
Token: SeDebugPrivilege	4676	installutil.exe
Token: SeDebugPrivilege	1636	installutil.exe
Token: SeRestorePrivilege	2364	dw20.exe
Token: SeBackupPrivilege	2364	dw20.exe
Token: SeBackupPrivilege	2364	dw20.exe
Token: SeBackupPrivilege	2364	dw20.exe
Token: SeBackupPrivilege	2364	dw20.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

installutil.exe

pid process

1636 installutil.exe

pid	process
1636	installutil.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

733067292220b3bd95580abf1650be726e0c9713a902ed44db18f51f16c6fdab.exeinstallutil.exeinstallutil.exe

description	pid	process	target process
PID 4776 wrote to memory of 4676	4776	733067292220b3bd95580abf1650be726e0c9713a902ed44db18f51f16c6fdab.exe	installutil.exe
PID 4776 wrote to memory of 4676	4776	733067292220b3bd95580abf1650be726e0c9713a902ed44db18f51f16c6fdab.exe	installutil.exe
PID 4776 wrote to memory of 4676	4776	733067292220b3bd95580abf1650be726e0c9713a902ed44db18f51f16c6fdab.exe	installutil.exe
PID 4676 wrote to memory of 1636	4676	installutil.exe	installutil.exe
PID 4676 wrote to memory of 1636	4676	installutil.exe	installutil.exe
PID 4676 wrote to memory of 1636	4676	installutil.exe	installutil.exe
PID 4676 wrote to memory of 1636	4676	installutil.exe	installutil.exe
PID 4676 wrote to memory of 1636	4676	installutil.exe	installutil.exe
PID 4676 wrote to memory of 1636	4676	installutil.exe	installutil.exe
PID 4676 wrote to memory of 1636	4676	installutil.exe	installutil.exe
PID 4676 wrote to memory of 1636	4676	installutil.exe	installutil.exe
PID 1636 wrote to memory of 4376	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 4376	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 4376	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 4376	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 4376	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 4376	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 4376	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 4376	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 4376	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 2344	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 2344	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 2344	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 2344	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 2344	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 2344	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 2344	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 2344	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 2344	1636	installutil.exe	vbc.exe
PID 1636 wrote to memory of 2364	1636	installutil.exe	dw20.exe
PID 1636 wrote to memory of 2364	1636	installutil.exe	dw20.exe
PID 1636 wrote to memory of 2364	1636	installutil.exe	dw20.exe

C:\Users\Admin\AppData\Local\Temp\733067292220b3bd95580abf1650be726e0c9713a902ed44db18f51f16c6fdab.exe
"C:\Users\Admin\AppData\Local\Temp\733067292220b3bd95580abf1650be726e0c9713a902ed44db18f51f16c6fdab.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4776

C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe" /logtoconsole=false /logfile= /u "C:\Users\Admin\AppData\Local\Temp\733067292220b3bd95580abf1650be726e0c9713a902ed44db18f51f16c6fdab.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4676

C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\installutil.exe"
3⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1636

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
4⤵
- Accesses Microsoft Outlook accounts
PID:4376

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2344

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
dw20.exe -x -s 2716
4⤵
- Drops file in Windows directory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:2364

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

T1064

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Scripting

T1064

Modify Registry

T1112

Credential Access

Discovery

Query Registry

3

System Information Discovery

4

Lateral Movement

Collection

Email Collection