44caliber | 6723c608be16ce8a8e79c52dfae90c4fefa55b386411ac977d9565e4308c727d

Processes:

b6a21ab39a7778dc807009a9cd23d82c.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,\"C:\\Users\\Admin\\AppData\\Local\\Pic1fPBkmq\\LOHejsSdpL.exe\" -s"	b6a21ab39a7778dc807009a9cd23d82c.exe

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

b6a21ab39a7778dc807009a9cd23d82c.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	b6a21ab39a7778dc807009a9cd23d82c.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

b6a21ab39a7778dc807009a9cd23d82c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	b6a21ab39a7778dc807009a9cd23d82c.exe

Executes dropped EXE 1 IoCs

Processes:

Q4efoe5ztW.exe

pid process

3744 Q4efoe5ztW.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
T1552.001

pid	process
3744	Q4efoe5ztW.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/1768-0-0x0000000000400000-0x00000000006C2000-memory.dmp	upx
behavioral2/memory/1768-43-0x0000000000400000-0x00000000006C2000-memory.dmp	upx

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
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

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

System Information Discovery
T1082

flow	ioc
19	freegeoip.app
20	freegeoip.app

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

Q4efoe5ztW.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	Q4efoe5ztW.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Q4efoe5ztW.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

Q4efoe5ztW.exe

pid process

3744 Q4efoe5ztW.exe
3744 Q4efoe5ztW.exe
3744 Q4efoe5ztW.exe
3744 Q4efoe5ztW.exe
3744 Q4efoe5ztW.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Q4efoe5ztW.exe

description pid process

Token: SeDebugPrivilege 3744 Q4efoe5ztW.exe

pid	process
3744	Q4efoe5ztW.exe
3744	Q4efoe5ztW.exe
3744	Q4efoe5ztW.exe
3744	Q4efoe5ztW.exe
3744	Q4efoe5ztW.exe

description	pid	process
Token: SeDebugPrivilege	3744	Q4efoe5ztW.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

b6a21ab39a7778dc807009a9cd23d82c.exe

description	pid	process	target process
PID 1768 wrote to memory of 3744	1768	b6a21ab39a7778dc807009a9cd23d82c.exe	Q4efoe5ztW.exe
PID 1768 wrote to memory of 3744	1768	b6a21ab39a7778dc807009a9cd23d82c.exe	Q4efoe5ztW.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

Processes:

b6a21ab39a7778dc807009a9cd23d82c.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	b6a21ab39a7778dc807009a9cd23d82c.exe

C:\Users\Admin\AppData\Local\Temp\b6a21ab39a7778dc807009a9cd23d82c.exe
"C:\Users\Admin\AppData\Local\Temp\b6a21ab39a7778dc807009a9cd23d82c.exe"
1⤵
- Modifies WinLogon for persistence
- UAC bypass
- Checks computer location settings
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1768

C:\Users\Admin\AppData\Local\Temp\Q4efoe5ztW.exe
"C:\Users\Admin\AppData\Local\Temp\Q4efoe5ztW.exe"
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3744

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1424 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8
1⤵
PID:1956

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Modify Registry

3

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System