7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50

General

Target

7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Size

76KB
MD5

c5f425457d57d556e5ae5be805c50187
SHA1

781d106d8342b2041f9502e6b8dc65452452e1f8
SHA256

7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50
SHA512

d3a98919b39b61761316d3fc68a978a53ffbb48b6a3e8432f2d7c983388271fc6fcdabef4144fe75102300a52523ced4eefb8326969d7a4e386981c41fea813e
SSDEEP

768:nembNRqsuhlGOBrhgFwumSCbxTGy/BBGg4NKJJKqUThbJ32+ve7i40vN0TlT+Xk/:pnqdu3abBGy3G8V0iuo22

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 2 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exevcn.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	vcn.exe

Modifies visibility of file extensions in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exevcn.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	vcn.exe

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

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exevcn.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	vcn.exe

Executes dropped EXE 1 IoCs

Processes:

vcn.exe

pid process

4812 vcn.exe

pid	process
4812	vcn.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

vcn.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	vcn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VisualStyle = "c:\\windows\\system32\\Desktop.sysm"	vcn.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

vcn.exe

description	ioc	process
File opened (read-only)	\??\F:	vcn.exe
File opened (read-only)	\??\G:	vcn.exe
File opened (read-only)	\??\H:	vcn.exe
File opened (read-only)	\??\K:	vcn.exe
File opened (read-only)	\??\X:	vcn.exe
File opened (read-only)	\??\J:	vcn.exe
File opened (read-only)	\??\L:	vcn.exe
File opened (read-only)	\??\N:	vcn.exe
File opened (read-only)	\??\P:	vcn.exe
File opened (read-only)	\??\Q:	vcn.exe
File opened (read-only)	\??\S:	vcn.exe
File opened (read-only)	\??\B:	vcn.exe
File opened (read-only)	\??\E:	vcn.exe
File opened (read-only)	\??\M:	vcn.exe
File opened (read-only)	\??\O:	vcn.exe
File opened (read-only)	\??\Z:	vcn.exe
File opened (read-only)	\??\I:	vcn.exe
File opened (read-only)	\??\R:	vcn.exe
File opened (read-only)	\??\T:	vcn.exe
File opened (read-only)	\??\U:	vcn.exe
File opened (read-only)	\??\V:	vcn.exe
File opened (read-only)	\??\W:	vcn.exe
File opened (read-only)	\??\Y:	vcn.exe

Drops file in System32 directory 6 IoCs

Processes:

vcn.exe7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe

description	ioc	process
File created	\??\c:\windows\SysWOW64\CommandPrompt.Sysm	vcn.exe
File created	\??\c:\windows\SysWOW64\maxtrox.txt	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
File created	\??\c:\windows\SysWOW64\Windows 3D.scr	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
File opened for modification	\??\c:\windows\SysWOW64\maxtrox.txt	vcn.exe
File opened for modification	\??\c:\windows\SysWOW64\Windows 3D.scr	vcn.exe
File created	\??\c:\windows\SysWOW64\Desktop.sysm	vcn.exe

Drops file in Program Files directory 27 IoCs

Processes:

vcn.exe

description	ioc	process
File opened for modification	\??\c:\Program Files\Mozilla Firefox\default-browser-agent.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\maintenanceservice.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmpconfig.exe	vcn.exe
File opened for modification	\??\c:\Program Files\7-Zip\7z.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\minidump-analyzer.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\plugin-hang-ui.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmplayer.exe	vcn.exe
File opened for modification	\??\c:\Program Files\7-Zip\Uninstall.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmprph.exe	vcn.exe
File opened for modification	\??\c:\Program Files\7-Zip\7zG.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\crashreporter.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmlaunch.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Internet Explorer\ielowutil.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Internet Explorer\iexplore.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\pingsender.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Windows Mail\wabmig.exe	vcn.exe
File opened for modification	\??\c:\Program Files\7-Zip\7zFM.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\updater.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\setup_wm.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmpnscfg.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Internet Explorer\iediagcmd.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\plugin-container.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmpnetwk.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Windows Media Player\wmpshare.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Internet Explorer\ieinstal.exe	vcn.exe
File opened for modification	\??\c:\Program Files\Mozilla Firefox\firefox.exe	vcn.exe

Modifies registry class 36 IoCs

Processes:

vcn.exe7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon	vcn.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command\ = "%1"	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	vcn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\NeverShowExt	vcn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon\ = "c:\\windows\\SysWow64\\rasphone.exe"	vcn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\ = "Microsoft System Direct"	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\ = "Microsoft System Direct"	vcn.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm	vcn.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\NeverShowExt	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command	vcn.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command	vcn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command\ = "%1"	vcn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	vcn.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd	vcn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon\ = "c:\\windows\\SysWow64\\rasphone.exe"	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command\ = "%1"	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command\ = "%1"	vcn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\NeverShowExt	vcn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\ = "System Mechanic"	vcn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon\ = "c:\\windows\\SysWow64\\netsetup.exe"	vcn.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\NeverShowExt	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\ = "System Mechanic"	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon\ = "c:\\windows\\SysWow64\\netsetup.exe"	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon	vcn.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exevcn.exe

pid process

3340 7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
4812 vcn.exe

pid	process
3340	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
4812	vcn.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe

description	pid	process	target process
PID 3340 wrote to memory of 4812	3340	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe	vcn.exe
PID 3340 wrote to memory of 4812	3340	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe	vcn.exe
PID 3340 wrote to memory of 4812	3340	7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe	vcn.exe

C:\Users\Admin\AppData\Local\Temp\7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe
"C:\Users\Admin\AppData\Local\Temp\7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50.exe"
1⤵
- Modifies system executable filetype association
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3340

\??\c:\Documents and Settings\Admin\Application Data\Microsoft\vcn.exe
"c:\Documents and Settings\Admin\Application Data\Microsoft\vcn.exe" 7c2039cd5d12bc38b227860d2116388c17a1896bf0f01e2dab848417b1080c50
2⤵
- Modifies system executable filetype association
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Enumerates connected drives
- Drops file in System32 directory
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4812

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\vcn.exe

Filesize
76KB

MD5
cf37014f7c00eefc476bcdc392e8cdca

SHA1
65da39c6171c59211c94428aecc51cf40fe614e8

SHA256
2a2280762b03d74fe795128be4a258f6a7db94a9f4fe30934edae569498f1aeb

SHA512
4ebf760206f039cf9184c1d7ab24214658c6706525e48c3c5a3c4a50d237ce3770e89e6d673c625514e20f6b13930b2f2b67bb3363faeb4bab65140fe8ff02e6

Download Submit
\??\c:\Documents and Settings\Admin\Application Data\Microsoft\vcn.exe

Filesize
76KB

MD5
cf37014f7c00eefc476bcdc392e8cdca

SHA1
65da39c6171c59211c94428aecc51cf40fe614e8

SHA256
2a2280762b03d74fe795128be4a258f6a7db94a9f4fe30934edae569498f1aeb

SHA512
4ebf760206f039cf9184c1d7ab24214658c6706525e48c3c5a3c4a50d237ce3770e89e6d673c625514e20f6b13930b2f2b67bb3363faeb4bab65140fe8ff02e6

Download Submit
\??\c:\windows\SysWOW64\Windows 3D.scr

Filesize
76KB

MD5
d9e9bd54d9d66f26c56a8681fd82d8f7

SHA1
4764d5ced76e3905737513aaad7a247a7e23da3c

SHA256
ca3eed990478b0d83c3e3f712cd4f91853749f657dd5a9faed78f464131b0e48

SHA512
105cb3e8058b765cb2f2030c8364c671fa69db3be4b825f08da7bb4c4e92b995b1f4d40a7ef7fcd7dda81c94e5aca6cba91b3f28f4c1b6678877cfb7e1c199e7

Download Submit
\??\c:\windows\SysWOW64\maxtrox.txt

Filesize
8B

MD5
24865ca220aa1936cbac0a57685217c5

SHA1
37f687cafe79e91eae6cbdffbf2f7ad3975f5e83

SHA256
841e95fa333ed89085bfbab19bb658d96ed0c837d25721411233fa55c860c743

SHA512
c8d3f514c72f48fed5de9582c4252cf5466a9d32866d8df3631ba9274ed734bb95139e4909e8116a10947fc1afa1dbeb33809da6ec050e6e4eb83d5241aeb062

Download Submit
memory/4812-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads