154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b

General

Target

154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe
Size

308KB
MD5

4f0c4f7a2be67072665ac5f48c756da0
SHA1

5ed66fa081c0a07cc079b1548e91556a6b60b832
SHA256

154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b
SHA512

5c627141d716cff548f3b8fbb09b2edea7d23b0b04a3f9759e9e371aa85dd6f8082309b677c9bd1b119c5ad1011889cf72fa648b8077c5f596fa4b6c390d3a9e
SSDEEP

6144:YyAWbOUfseiFDyHqpzgxuHN6q9OM3ESNt84ULuFMtBZBmE6UTQVwoSu:KAO19oq1QI4y3H/8xxBZBmE6UTQuoSu

Score

10^/10

evasion persistence upx

Malware Config

Signatures

Modifies firewall policy service 2 TTPs 10 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

reg.exereg.exereg.exereg.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	reg.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\Windows Updater.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Updater.exe:*:Enabled:Windows Messanger"	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	reg.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	reg.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Update\\winupdt.exe:*:Enabled:Windows Messanger"	reg.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	reg.exe

Executes dropped EXE 2 IoCs

Processes:

winupdt.exewinupdt.exe

pid process

3952 winupdt.exe
4228 winupdt.exe

pid	process
3952	winupdt.exe
4228	winupdt.exe

UPX packed file 12 IoCs

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

upx

Processes:

yara_rule
upx
behavioral2/memory/3824-132-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral2/memory/3824-135-0x0000000000400000-0x0000000000591000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe	upx
C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe	upx
behavioral2/memory/4228-145-0x0000000000400000-0x000000000045C000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe	upx
behavioral2/memory/4228-148-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4228-149-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/3952-150-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral2/memory/3824-153-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral2/memory/4228-163-0x0000000000400000-0x000000000045C000-memory.dmp	upx

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:

154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe

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-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Window Updates = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Update\\winupdt.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

winupdt.exe

description pid process target process

PID 3952 set thread context of 4228 3952 winupdt.exe winupdt.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Modifies registry key 1 TTPs 4 IoCs

Modify Registry
T1112

Processes:

reg.exereg.exereg.exereg.exe

pid process

3432 reg.exe
4564 reg.exe
3940 reg.exe
4660 reg.exe

description	pid	process	target process
PID 3952 set thread context of 4228	3952	winupdt.exe	winupdt.exe

pid	process
3432	reg.exe
4564	reg.exe
3940	reg.exe
4660	reg.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

winupdt.exe

description	pid	process
Token: 1	4228	winupdt.exe
Token: SeCreateTokenPrivilege	4228	winupdt.exe
Token: SeAssignPrimaryTokenPrivilege	4228	winupdt.exe
Token: SeLockMemoryPrivilege	4228	winupdt.exe
Token: SeIncreaseQuotaPrivilege	4228	winupdt.exe
Token: SeMachineAccountPrivilege	4228	winupdt.exe
Token: SeTcbPrivilege	4228	winupdt.exe
Token: SeSecurityPrivilege	4228	winupdt.exe
Token: SeTakeOwnershipPrivilege	4228	winupdt.exe
Token: SeLoadDriverPrivilege	4228	winupdt.exe
Token: SeSystemProfilePrivilege	4228	winupdt.exe
Token: SeSystemtimePrivilege	4228	winupdt.exe
Token: SeProfSingleProcessPrivilege	4228	winupdt.exe
Token: SeIncBasePriorityPrivilege	4228	winupdt.exe
Token: SeCreatePagefilePrivilege	4228	winupdt.exe
Token: SeCreatePermanentPrivilege	4228	winupdt.exe
Token: SeBackupPrivilege	4228	winupdt.exe
Token: SeRestorePrivilege	4228	winupdt.exe
Token: SeShutdownPrivilege	4228	winupdt.exe
Token: SeDebugPrivilege	4228	winupdt.exe
Token: SeAuditPrivilege	4228	winupdt.exe
Token: SeSystemEnvironmentPrivilege	4228	winupdt.exe
Token: SeChangeNotifyPrivilege	4228	winupdt.exe
Token: SeRemoteShutdownPrivilege	4228	winupdt.exe
Token: SeUndockPrivilege	4228	winupdt.exe
Token: SeSyncAgentPrivilege	4228	winupdt.exe
Token: SeEnableDelegationPrivilege	4228	winupdt.exe
Token: SeManageVolumePrivilege	4228	winupdt.exe
Token: SeImpersonatePrivilege	4228	winupdt.exe
Token: SeCreateGlobalPrivilege	4228	winupdt.exe
Token: 31	4228	winupdt.exe
Token: 32	4228	winupdt.exe
Token: 33	4228	winupdt.exe
Token: 34	4228	winupdt.exe
Token: 35	4228	winupdt.exe

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exewinupdt.exewinupdt.exe

pid process

3824 154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe
3952 winupdt.exe
4228 winupdt.exe
4228 winupdt.exe
4228 winupdt.exe

pid	process
3824	154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe
3952	winupdt.exe
4228	winupdt.exe
4228	winupdt.exe
4228	winupdt.exe

Suspicious use of WriteProcessMemory 41 IoCs

Processes:

154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.execmd.exewinupdt.exewinupdt.execmd.execmd.execmd.execmd.exe

description	pid	process	target process
PID 3824 wrote to memory of 4868	3824	154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe	cmd.exe
PID 3824 wrote to memory of 4868	3824	154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe	cmd.exe
PID 3824 wrote to memory of 4868	3824	154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe	cmd.exe
PID 4868 wrote to memory of 4316	4868	cmd.exe	reg.exe
PID 4868 wrote to memory of 4316	4868	cmd.exe	reg.exe
PID 4868 wrote to memory of 4316	4868	cmd.exe	reg.exe
PID 3824 wrote to memory of 3952	3824	154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe	winupdt.exe
PID 3824 wrote to memory of 3952	3824	154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe	winupdt.exe
PID 3824 wrote to memory of 3952	3824	154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe	winupdt.exe
PID 3952 wrote to memory of 4228	3952	winupdt.exe	winupdt.exe
PID 3952 wrote to memory of 4228	3952	winupdt.exe	winupdt.exe
PID 3952 wrote to memory of 4228	3952	winupdt.exe	winupdt.exe
PID 3952 wrote to memory of 4228	3952	winupdt.exe	winupdt.exe
PID 3952 wrote to memory of 4228	3952	winupdt.exe	winupdt.exe
PID 3952 wrote to memory of 4228	3952	winupdt.exe	winupdt.exe
PID 3952 wrote to memory of 4228	3952	winupdt.exe	winupdt.exe
PID 3952 wrote to memory of 4228	3952	winupdt.exe	winupdt.exe
PID 4228 wrote to memory of 4024	4228	winupdt.exe	cmd.exe
PID 4228 wrote to memory of 4024	4228	winupdt.exe	cmd.exe
PID 4228 wrote to memory of 4024	4228	winupdt.exe	cmd.exe
PID 4228 wrote to memory of 4312	4228	winupdt.exe	cmd.exe
PID 4228 wrote to memory of 4312	4228	winupdt.exe	cmd.exe
PID 4228 wrote to memory of 4312	4228	winupdt.exe	cmd.exe
PID 4228 wrote to memory of 3408	4228	winupdt.exe	cmd.exe
PID 4228 wrote to memory of 3408	4228	winupdt.exe	cmd.exe
PID 4228 wrote to memory of 3408	4228	winupdt.exe	cmd.exe
PID 4228 wrote to memory of 4128	4228	winupdt.exe	cmd.exe
PID 4228 wrote to memory of 4128	4228	winupdt.exe	cmd.exe
PID 4228 wrote to memory of 4128	4228	winupdt.exe	cmd.exe
PID 4024 wrote to memory of 3432	4024	cmd.exe	reg.exe
PID 4024 wrote to memory of 3432	4024	cmd.exe	reg.exe
PID 4024 wrote to memory of 3432	4024	cmd.exe	reg.exe
PID 4128 wrote to memory of 4564	4128	cmd.exe	reg.exe
PID 4128 wrote to memory of 4564	4128	cmd.exe	reg.exe
PID 4128 wrote to memory of 4564	4128	cmd.exe	reg.exe
PID 3408 wrote to memory of 3940	3408	cmd.exe	reg.exe
PID 3408 wrote to memory of 3940	3408	cmd.exe	reg.exe
PID 3408 wrote to memory of 3940	3408	cmd.exe	reg.exe
PID 4312 wrote to memory of 4660	4312	cmd.exe	reg.exe
PID 4312 wrote to memory of 4660	4312	cmd.exe	reg.exe
PID 4312 wrote to memory of 4660	4312	cmd.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe
"C:\Users\Admin\AppData\Local\Temp\154dec649855d624285779d75aac3fcdae916fc91f99a402dcebe9485041066b.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3824

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VuxJT.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:4868

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Window Updates" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe" /f
3⤵
- Adds Run key to start application
PID:4316

C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe
"C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3952

C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe
"C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4228

C:\Windows\SysWOW64\cmd.exe
cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
4⤵
- Suspicious use of WriteProcessMemory
PID:4024

C:\Windows\SysWOW64\reg.exe
REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
5⤵
- Modifies firewall policy service
- Modifies registry key
PID:3432

C:\Windows\SysWOW64\cmd.exe
cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe:*:Enabled:Windows Messanger" /f
4⤵
- Suspicious use of WriteProcessMemory
PID:4312

C:\Windows\SysWOW64\reg.exe
REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe:*:Enabled:Windows Messanger" /f
5⤵
- Modifies firewall policy service
- Modifies registry key
PID:4660

C:\Windows\SysWOW64\cmd.exe
cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
4⤵
- Suspicious use of WriteProcessMemory
PID:3408

C:\Windows\SysWOW64\reg.exe
REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
5⤵
- Modifies firewall policy service
- Modifies registry key
PID:3940

C:\Windows\SysWOW64\cmd.exe
cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Updater.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Updater.exe:*:Enabled:Windows Messanger" /f
4⤵
- Suspicious use of WriteProcessMemory
PID:4128

C:\Windows\SysWOW64\reg.exe
REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Updater.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Updater.exe:*:Enabled:Windows Messanger" /f
5⤵
- Modifies firewall policy service
- Modifies registry key
PID:4564

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\VuxJT.bat
Filesize
158B

MD5
1954c7e666c5b4d1117ef07bc0c9b8ec

SHA1
559e3c0273c1463e9184027b749bdaad0a372681

SHA256
35e0dbc8b455ca38976157ce9d0293fd6cdca20f46f1cb69058a1e0f0af6f693

SHA512
3939de8d0ab7e67b59ff8bebed5580dafd38d8785193fd42a289728500761a68b9e6660605e19e10d4278dd106fea4b273a208f25485e7389c8f19b2958c926a

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe
Filesize
308KB

MD5
91a9e22c1045c21f649efb6895708db6

SHA1
bcd642a4b248764a9642885458f8ebd5048fef61

SHA256
ee22e20ca2b5ffd6825cc8bf37ceed6babd1e930affc134485d8be8e32fbebec

SHA512
512a8a43d850b1271ef7c76d1ad4d7b72d477292bff5b131dd20462a27a68485246cf39fe7a7455e867c8ae414784528dd8751207090c6d0c628a1ee2571d66c

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe
Filesize
308KB

MD5
91a9e22c1045c21f649efb6895708db6

SHA1
bcd642a4b248764a9642885458f8ebd5048fef61

SHA256
ee22e20ca2b5ffd6825cc8bf37ceed6babd1e930affc134485d8be8e32fbebec

SHA512
512a8a43d850b1271ef7c76d1ad4d7b72d477292bff5b131dd20462a27a68485246cf39fe7a7455e867c8ae414784528dd8751207090c6d0c628a1ee2571d66c

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe
Filesize
308KB

MD5
91a9e22c1045c21f649efb6895708db6

SHA1
bcd642a4b248764a9642885458f8ebd5048fef61

SHA256
ee22e20ca2b5ffd6825cc8bf37ceed6babd1e930affc134485d8be8e32fbebec

SHA512
512a8a43d850b1271ef7c76d1ad4d7b72d477292bff5b131dd20462a27a68485246cf39fe7a7455e867c8ae414784528dd8751207090c6d0c628a1ee2571d66c

Download Submit
memory/3408-157-0x0000000000000000-mapping.dmp

Download
memory/3432-159-0x0000000000000000-mapping.dmp

Download
memory/3824-132-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/3824-135-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/3824-153-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/3940-161-0x0000000000000000-mapping.dmp

Download
memory/3952-150-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/3952-139-0x0000000000000000-mapping.dmp

Download
memory/4024-155-0x0000000000000000-mapping.dmp

Download
memory/4128-158-0x0000000000000000-mapping.dmp

Download
memory/4228-149-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4228-148-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4228-145-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4228-144-0x0000000000000000-mapping.dmp

Download
memory/4228-163-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4312-156-0x0000000000000000-mapping.dmp

Download
memory/4316-138-0x0000000000000000-mapping.dmp

Download
memory/4564-160-0x0000000000000000-mapping.dmp

Download
memory/4660-162-0x0000000000000000-mapping.dmp

Download
memory/4868-136-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads