amadey | 02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429

Virtualization/Sandbox Evasion

Processes:

02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exeexplorgu.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorgu.exe

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exerundll32.exe

flow pid process

71 2904 rundll32.exe
72 5512 rundll32.exe
Downloads MZ/PE file

flow	pid	process
71	2904	rundll32.exe
72	5512	rundll32.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

Processes:

02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exeexplorgu.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorgu.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorgu.exe

Checks computer location settings 2 TTPs 5 IoCs

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

Query Registry

System Information Discovery

Processes:

explorgu.exeNewB.exeISetup8.exeukw.0.exeFHJKKECFIE.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	explorgu.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	NewB.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	ISetup8.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	ukw.0.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	FHJKKECFIE.exe

Executes dropped EXE 8 IoCs

Processes:

explorgu.exeNewB.exeISetup8.exeukw.0.exeukw.1.exeFHJKKECFIE.exeNewB.exeNewB.exe

pid process

3076 explorgu.exe
2728 NewB.exe
752 ISetup8.exe
2188 ukw.0.exe
3260 ukw.1.exe
5968 FHJKKECFIE.exe
4572 NewB.exe
5404 NewB.exe

pid	process
3076	explorgu.exe
2728	NewB.exe
752	ISetup8.exe
2188	ukw.0.exe
3260	ukw.1.exe
5968	FHJKKECFIE.exe
4572	NewB.exe
5404	NewB.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

Processes:

explorgu.exe02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Software\Wine	explorgu.exe
Key opened	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Software\Wine	02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe

Loads dropped DLL 5 IoCs

Processes:

rundll32.exerundll32.exerundll32.exeukw.0.exe

pid process

3992 rundll32.exe
2904 rundll32.exe
5512 rundll32.exe
2188 ukw.0.exe
2188 ukw.0.exe
Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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
3992	rundll32.exe
2904	rundll32.exe
5512	rundll32.exe
2188	ukw.0.exe
2188	ukw.0.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\ukw.1.exe	upx
behavioral1/memory/3260-149-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral1/memory/3260-206-0x0000000000400000-0x0000000000930000-memory.dmp	upx

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

Data from Local System
T1005

Credentials In Files
T1552.001
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
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exeexplorgu.exe

pid process

1380 02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe
3076 explorgu.exe
Drops file in Windows directory 1 IoCs

Processes:

02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe

description ioc process

File created C:\Windows\Tasks\explorgu.job 02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

1128 752 WerFault.exe ISetup8.exe
5976 2188 WerFault.exe ukw.0.exe

description	ioc	process
File created	C:\Windows\Tasks\explorgu.job	02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe

pid	pid_target	process	target process
1128	752	WerFault.exe	ISetup8.exe
5976	2188	WerFault.exe	ukw.0.exe

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

Processes:

ukw.0.exe

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

Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

4672 schtasks.exe
5352 schtasks.exe
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

4720 PING.EXE

pid	process
4672	schtasks.exe
5352	schtasks.exe

pid	process
4720	PING.EXE

Suspicious behavior: EnumeratesProcesses 29 IoCs

Processes:

02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exeexplorgu.exeukw.0.exerundll32.exepowershell.exe

pid	process
1380	02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe
1380	02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe
3076	explorgu.exe
3076	explorgu.exe
2188	ukw.0.exe
2188	ukw.0.exe
2188	ukw.0.exe
2188	ukw.0.exe
2188	ukw.0.exe
2188	ukw.0.exe
2188	ukw.0.exe
2188	ukw.0.exe
2188	ukw.0.exe
2188	ukw.0.exe
2904	rundll32.exe
2904	rundll32.exe
2904	rundll32.exe
2904	rundll32.exe
2904	rundll32.exe
2904	rundll32.exe
2904	rundll32.exe
2904	rundll32.exe
2904	rundll32.exe
2904	rundll32.exe
4444	powershell.exe
4444	powershell.exe
4444	powershell.exe
2188	ukw.0.exe
2188	ukw.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 4444 powershell.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe

pid process

1380 02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ukw.1.exe

pid process

3260 ukw.1.exe

description	pid	process
Token: SeDebugPrivilege	4444	powershell.exe

pid	process
3260	ukw.1.exe

Suspicious use of WriteProcessMemory 48 IoCs

Processes:

explorgu.exeNewB.exeISetup8.exerundll32.exerundll32.exeukw.1.execmd.exeukw.0.execmd.exeFHJKKECFIE.execmd.exe

description	pid	process	target process
PID 3076 wrote to memory of 2728	3076	explorgu.exe	NewB.exe
PID 3076 wrote to memory of 2728	3076	explorgu.exe	NewB.exe
PID 3076 wrote to memory of 2728	3076	explorgu.exe	NewB.exe
PID 2728 wrote to memory of 4672	2728	NewB.exe	schtasks.exe
PID 2728 wrote to memory of 4672	2728	NewB.exe	schtasks.exe
PID 2728 wrote to memory of 4672	2728	NewB.exe	schtasks.exe
PID 2728 wrote to memory of 752	2728	NewB.exe	ISetup8.exe
PID 2728 wrote to memory of 752	2728	NewB.exe	ISetup8.exe
PID 2728 wrote to memory of 752	2728	NewB.exe	ISetup8.exe
PID 752 wrote to memory of 2188	752	ISetup8.exe	ukw.0.exe
PID 752 wrote to memory of 2188	752	ISetup8.exe	ukw.0.exe
PID 752 wrote to memory of 2188	752	ISetup8.exe	ukw.0.exe
PID 3076 wrote to memory of 3992	3076	explorgu.exe	rundll32.exe
PID 3076 wrote to memory of 3992	3076	explorgu.exe	rundll32.exe
PID 3076 wrote to memory of 3992	3076	explorgu.exe	rundll32.exe
PID 3992 wrote to memory of 2904	3992	rundll32.exe	rundll32.exe
PID 3992 wrote to memory of 2904	3992	rundll32.exe	rundll32.exe
PID 2904 wrote to memory of 3708	2904	rundll32.exe	netsh.exe
PID 2904 wrote to memory of 3708	2904	rundll32.exe	netsh.exe
PID 752 wrote to memory of 3260	752	ISetup8.exe	ukw.1.exe
PID 752 wrote to memory of 3260	752	ISetup8.exe	ukw.1.exe
PID 752 wrote to memory of 3260	752	ISetup8.exe	ukw.1.exe
PID 2904 wrote to memory of 4444	2904	rundll32.exe	powershell.exe
PID 2904 wrote to memory of 4444	2904	rundll32.exe	powershell.exe
PID 3260 wrote to memory of 5248	3260	ukw.1.exe	cmd.exe
PID 3260 wrote to memory of 5248	3260	ukw.1.exe	cmd.exe
PID 3260 wrote to memory of 5248	3260	ukw.1.exe	cmd.exe
PID 5248 wrote to memory of 5308	5248	cmd.exe	chcp.com
PID 5248 wrote to memory of 5308	5248	cmd.exe	chcp.com
PID 5248 wrote to memory of 5308	5248	cmd.exe	chcp.com
PID 5248 wrote to memory of 5352	5248	cmd.exe	schtasks.exe
PID 5248 wrote to memory of 5352	5248	cmd.exe	schtasks.exe
PID 5248 wrote to memory of 5352	5248	cmd.exe	schtasks.exe
PID 3076 wrote to memory of 5512	3076	explorgu.exe	rundll32.exe
PID 3076 wrote to memory of 5512	3076	explorgu.exe	rundll32.exe
PID 3076 wrote to memory of 5512	3076	explorgu.exe	rundll32.exe
PID 2188 wrote to memory of 5904	2188	ukw.0.exe	cmd.exe
PID 2188 wrote to memory of 5904	2188	ukw.0.exe	cmd.exe
PID 2188 wrote to memory of 5904	2188	ukw.0.exe	cmd.exe
PID 5904 wrote to memory of 5968	5904	cmd.exe	FHJKKECFIE.exe
PID 5904 wrote to memory of 5968	5904	cmd.exe	FHJKKECFIE.exe
PID 5904 wrote to memory of 5968	5904	cmd.exe	FHJKKECFIE.exe
PID 5968 wrote to memory of 5320	5968	FHJKKECFIE.exe	cmd.exe
PID 5968 wrote to memory of 5320	5968	FHJKKECFIE.exe	cmd.exe
PID 5968 wrote to memory of 5320	5968	FHJKKECFIE.exe	cmd.exe
PID 5320 wrote to memory of 4720	5320	cmd.exe	PING.EXE
PID 5320 wrote to memory of 4720	5320	cmd.exe	PING.EXE
PID 5320 wrote to memory of 4720	5320	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe
"C:\Users\Admin\AppData\Local\Temp\02bec171956fcf41f4314275a9209d49c29f91ffe9993718665bdd93f6be6429.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
PID:1380

C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exe
C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3076

C:\Users\Admin\AppData\Local\Temp\1001036001\NewB.exe
"C:\Users\Admin\AppData\Local\Temp\1001036001\NewB.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2728

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN NewB.exe /TR "C:\Users\Admin\AppData\Local\Temp\1001036001\NewB.exe" /F
3⤵
- Creates scheduled task(s)
PID:4672

C:\Users\Admin\AppData\Local\Temp\1000180001\ISetup8.exe
"C:\Users\Admin\AppData\Local\Temp\1000180001\ISetup8.exe"
3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:752

C:\Users\Admin\AppData\Local\Temp\ukw.0.exe
"C:\Users\Admin\AppData\Local\Temp\ukw.0.exe"
4⤵
- Checks computer location settings
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2188

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\FHJKKECFIE.exe"
5⤵
- Suspicious use of WriteProcessMemory
PID:5904

C:\Users\Admin\AppData\Local\Temp\FHJKKECFIE.exe
"C:\Users\Admin\AppData\Local\Temp\FHJKKECFIE.exe"
6⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:5968

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\FHJKKECFIE.exe
7⤵
- Suspicious use of WriteProcessMemory
PID:5320

C:\Windows\SysWOW64\PING.EXE
ping 2.2.2.2 -n 1 -w 3000
8⤵
- Runs ping.exe
PID:4720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2188 -s 2240
5⤵
- Program crash
PID:5976

C:\Users\Admin\AppData\Local\Temp\ukw.1.exe
"C:\Users\Admin\AppData\Local\Temp\ukw.1.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3260

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
5⤵
- Suspicious use of WriteProcessMemory
PID:5248

C:\Windows\SysWOW64\chcp.com
chcp 1251
6⤵
PID:5308

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn "MalayamaraUpdate" /tr "'C:\Users\Admin\AppData\Local\Temp\Updater.exe'" /sc minute /mo 30 /F
6⤵
- Creates scheduled task(s)
PID:5352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 752 -s 1404
4⤵
- Program crash
PID:1128

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll, Main
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3992

C:\Windows\system32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll, Main
3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2904

C:\Windows\system32\netsh.exe
netsh wlan show profiles
4⤵
PID:3708

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -Command Compress-Archive -Path 'C:\Users\Admin\AppData\Local\Temp\_Files_\' -DestinationPath 'C:\Users\Admin\AppData\Local\Temp\904519900954_Desktop.zip' -CompressionLevel Optimal
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4444

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\clip64.dll, Main
2⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:5512

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=3988 --field-trial-handle=3084,i,11997299123381683778,5904351605020331957,262144 --variations-seed-version /prefetch:8
1⤵
PID:1900

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=3220 --field-trial-handle=3084,i,11997299123381683778,5904351605020331957,262144 --variations-seed-version /prefetch:3
1⤵
PID:3564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 752 -ip 752
1⤵
PID:4520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2188 -ip 2188
1⤵
PID:5912

C:\Users\Admin\AppData\Local\Temp\1001036001\NewB.exe
C:\Users\Admin\AppData\Local\Temp\1001036001\NewB.exe
1⤵
- Executes dropped EXE
PID:4572

C:\Users\Admin\AppData\Local\Temp\1001036001\NewB.exe
C:\Users\Admin\AppData\Local\Temp\1001036001\NewB.exe
1⤵
- Executes dropped EXE
PID:5404

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Query Registry

Virtualization/Sandbox Evasion

System Information Discovery