75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e

General

Target

75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e.exe
Size

264KB
MD5

94341251c899fcbebb190ba272eafd9c
SHA1

d9f9efcb62aa7a663569ccef3043cc9e1c4535dc
SHA256

75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e
SHA512

7d3fd8ec580132ec4afe50d2858227eca18fbc773c9fefbe10afe441feee1718f57750d48eb3d08cf7c9f95bc022ae83d930dc861243246d5962559a46c07bc1
SSDEEP

3072:HwwQcqsOeDf2IDyG2pfr4GNLzECcKIvMBSYWunCvPQiwhjXH1WkaBx5/lvnjLYar:QwQ3sOeb9Ic6OLynWunzXH1W9r

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	vnhooz.exe

Executes dropped EXE 1 IoCs

pid	Process
1548	vnhooz.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e.exe

Adds Run key to start application 2 TTPs 18 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /E"	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /K"	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /a"	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /y"	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /N"	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /L"	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /B"	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /O"	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /C"	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /J"	vnhooz.exe
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows\CurrentVersion\Run\	75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e.exe
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows\CurrentVersion\Run\	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /r"	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /P"	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /B"	75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /n"	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /x"	vnhooz.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vnhooz = "C:\\Users\\Admin\\vnhooz.exe /W"	vnhooz.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 38 IoCs

pid	Process
1968	75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e.exe
1968	75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe
1548	vnhooz.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1968	75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e.exe
1548	vnhooz.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 1548	1968	75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e.exe	85
PID 1968 wrote to memory of 1548	1968	75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e.exe	85
PID 1968 wrote to memory of 1548	1968	75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e.exe	85

C:\Users\Admin\AppData\Local\Temp\75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e.exe
"C:\Users\Admin\AppData\Local\Temp\75fc524129c3025014c06b1f3475d2e6d9ea9cd326f653760f75f0ad71d84f1e.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Users\Admin\vnhooz.exe
  "C:\Users\Admin\vnhooz.exe"
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:1548

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\vnhooz.exe

Filesize
264KB

MD5
37219b4f82c5abd098a8e9120028705f

SHA1
9d9b7aae59dfd018ed1ea4f72ccb5bea45284546

SHA256
61d172938702e969d429331bc02f06bd334347c0964a573887541c4d7d9fc2bf

SHA512
e95f153004d6dbcdbb21033f0c3307638491e0239591fbeb80ba28a31e1e78c3c84c83c5353a9a17f3f072ca1eff731be7801c124cf9dbee4172f42239e2a72c

Download Submit
C:\Users\Admin\vnhooz.exe

Filesize
264KB

MD5
37219b4f82c5abd098a8e9120028705f

SHA1
9d9b7aae59dfd018ed1ea4f72ccb5bea45284546

SHA256
61d172938702e969d429331bc02f06bd334347c0964a573887541c4d7d9fc2bf

SHA512
e95f153004d6dbcdbb21033f0c3307638491e0239591fbeb80ba28a31e1e78c3c84c83c5353a9a17f3f072ca1eff731be7801c124cf9dbee4172f42239e2a72c

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads