83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d

System Information Discovery

Processes:

83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exetmp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	tmp.exe

Drops startup file 2 IoCs

Processes:

cmd.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp.exe	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp.exe	cmd.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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Example = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Antivirus.exe"	reg.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

53 bot.whatismyipaddress.com
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

flow	ioc
53	bot.whatismyipaddress.com

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe

pid process

3776 83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

tmp.exe

pid process

2904 tmp.exe

pid	process
3776	83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe

pid	process
2904	tmp.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exetmp.exedw20.exe

description	pid	process
Token: SeDebugPrivilege	3776	83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe
Token: SeDebugPrivilege	2904	tmp.exe
Token: SeRestorePrivilege	4236	dw20.exe
Token: SeBackupPrivilege	4236	dw20.exe
Token: SeBackupPrivilege	4236	dw20.exe
Token: SeBackupPrivilege	4236	dw20.exe
Token: SeBackupPrivilege	4236	dw20.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

tmp.exe

pid process

2904 tmp.exe
2904 tmp.exe

pid	process
2904	tmp.exe
2904	tmp.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exetmp.execmd.exe

description	pid	process	target process
PID 3776 wrote to memory of 2904	3776	83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe	tmp.exe
PID 3776 wrote to memory of 2904	3776	83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe	tmp.exe
PID 3776 wrote to memory of 2904	3776	83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe	tmp.exe
PID 3776 wrote to memory of 1080	3776	83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe	83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe
PID 3776 wrote to memory of 1080	3776	83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe	83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe
PID 3776 wrote to memory of 1080	3776	83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe	83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe
PID 2904 wrote to memory of 3752	2904	tmp.exe	cmd.exe
PID 2904 wrote to memory of 3752	2904	tmp.exe	cmd.exe
PID 2904 wrote to memory of 3752	2904	tmp.exe	cmd.exe
PID 2904 wrote to memory of 2708	2904	tmp.exe	cmd.exe
PID 2904 wrote to memory of 2708	2904	tmp.exe	cmd.exe
PID 2904 wrote to memory of 2708	2904	tmp.exe	cmd.exe
PID 2708 wrote to memory of 4084	2708	cmd.exe	reg.exe
PID 2708 wrote to memory of 4084	2708	cmd.exe	reg.exe
PID 2708 wrote to memory of 4084	2708	cmd.exe	reg.exe
PID 2904 wrote to memory of 4236	2904	tmp.exe	dw20.exe
PID 2904 wrote to memory of 4236	2904	tmp.exe	dw20.exe
PID 2904 wrote to memory of 4236	2904	tmp.exe	dw20.exe

C:\Users\Admin\AppData\Local\Temp\83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe
"C:\Users\Admin\AppData\Local\Temp\83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3776

C:\Users\Admin\AppData\Roaming\tmp.exe
"C:\Users\Admin\AppData\Roaming\tmp.exe"
2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2904

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c copy /z "C:\Users\Admin\AppData\Roaming\tmp.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tmp.exe"
3⤵
- Drops startup file
PID:3752

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Example" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Antivirus.exe
3⤵
- Suspicious use of WriteProcessMemory
PID:2708

C:\Windows\SysWOW64\reg.exe
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Example" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Antivirus.exe
4⤵
- Adds Run key to start application
PID:4084

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
dw20.exe -x -s 2556
3⤵
- Drops file in Windows directory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:4236

C:\Users\Admin\AppData\Local\Temp\83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe
C:\Users\Admin\AppData\Local\Temp\83b2ee96940a6d6fc8f1ee0064cafd17abb9db05e89e1cdb4e207ca2987c2f1d.exe
2⤵
PID:1080

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

3

System Information Discovery

4

Lateral Movement

Collection

Data from Local System