177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2

General

Target

177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Size

76KB
MD5

863f167f652c9c29de71b65c80b5bfbf
SHA1

1aff6f7cab937c0b96f61ecfc88dc4564617f300
SHA256

177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2
SHA512

efd7775583c7a9ac16daf0b4d542ba13b42fb4458aebe84516475966b8f016d8a48864feff2a43ee059126a7a77f232aa09cace12fda05ab081ad46f425da2e0
SSDEEP

768:XembNRqsuhlGOBrhgFwumSCbxTGy/BBGg4NKJJKqUThbJ32+ve7i40vN0TlT+Xkj:5nqdu3abBGy3G8V0iuo2i

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:

177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exevcnw.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	vcnw.exe

Modifies visibility of file extensions in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exevcnw.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	vcnw.exe

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

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

vcnw.exe177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	vcnw.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe

Executes dropped EXE 1 IoCs

Processes:

vcnw.exe

pid process

4856 vcnw.exe

pid	process
4856	vcnw.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

vcnw.exe

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

vcnw.exe

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

Drops file in System32 directory 6 IoCs

Processes:

177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exevcnw.exe

description	ioc	process
File created	\??\c:\windows\SysWOW64\maxtrox.txt	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
File created	\??\c:\windows\SysWOW64\Windows 3D.scr	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
File opened for modification	\??\c:\windows\SysWOW64\maxtrox.txt	vcnw.exe
File opened for modification	\??\c:\windows\SysWOW64\Windows 3D.scr	vcnw.exe
File created	\??\c:\windows\SysWOW64\Desktop.sysm	vcnw.exe
File created	\??\c:\windows\SysWOW64\CommandPrompt.Sysm	vcnw.exe

Drops file in Program Files directory 27 IoCs

Processes:

vcnw.exe

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

Modifies registry class 36 IoCs

Processes:

vcnw.exe177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon	vcnw.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\NeverShowExt	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\NeverShowExt	vcnw.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command\ = "%1"	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	vcnw.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd	vcnw.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command\ = "%1"	vcnw.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command\ = "%1"	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\ = "System Mechanic"	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command	vcnw.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon\ = "c:\\windows\\SysWow64\\netsetup.exe"	vcnw.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command	vcnw.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command\ = "%1"	vcnw.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon\ = "c:\\windows\\SysWow64\\rasphone.exe"	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon\ = "c:\\windows\\SysWow64\\netsetup.exe"	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm	vcnw.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	vcnw.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\ = "System Mechanic"	vcnw.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon\ = "c:\\windows\\SysWow64\\rasphone.exe"	vcnw.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\NeverShowExt	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon	vcnw.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\NeverShowExt	vcnw.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\ = "Microsoft System Direct"	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\ = "Microsoft System Direct"	vcnw.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exevcnw.exe

pid process

4764 177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
4856 vcnw.exe

pid	process
4764	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
4856	vcnw.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe

description	pid	process	target process
PID 4764 wrote to memory of 4856	4764	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe	vcnw.exe
PID 4764 wrote to memory of 4856	4764	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe	vcnw.exe
PID 4764 wrote to memory of 4856	4764	177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe	vcnw.exe

C:\Users\Admin\AppData\Local\Temp\177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.exe
"C:\Users\Admin\AppData\Local\Temp\177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2.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:4764

\??\c:\Documents and Settings\Admin\Application Data\Microsoft\vcnw.exe
"c:\Documents and Settings\Admin\Application Data\Microsoft\vcnw.exe" 177678f27f3114061f5fa3a7bad40ff4a9e91c1411a8ff242abe9d743461f7a2
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:4856

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

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Downloads

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

Filesize
76KB

MD5
b5f926f90d00acdcabbd306f51426a2d

SHA1
55fa07c246135078ba1c7c891c09e9b19b9c1f2e

SHA256
f1e093db8f64c40edba1fc045e6977fe59e77c0b48c822266fffabc23ab320a1

SHA512
58885940bb9a4fa07d261e910a2e9205a863311d3ef5c81d9ab712d6eb2bf594111338003e814733b3adbb03ad60cdba185cc9157390fa713d75970b9bc915c9

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

Filesize
76KB

MD5
b5f926f90d00acdcabbd306f51426a2d

SHA1
55fa07c246135078ba1c7c891c09e9b19b9c1f2e

SHA256
f1e093db8f64c40edba1fc045e6977fe59e77c0b48c822266fffabc23ab320a1

SHA512
58885940bb9a4fa07d261e910a2e9205a863311d3ef5c81d9ab712d6eb2bf594111338003e814733b3adbb03ad60cdba185cc9157390fa713d75970b9bc915c9

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

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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

Filesize
8B

MD5
24865ca220aa1936cbac0a57685217c5

SHA1
37f687cafe79e91eae6cbdffbf2f7ad3975f5e83

SHA256
841e95fa333ed89085bfbab19bb658d96ed0c837d25721411233fa55c860c743

SHA512
c8d3f514c72f48fed5de9582c4252cf5466a9d32866d8df3631ba9274ed734bb95139e4909e8116a10947fc1afa1dbeb33809da6ec050e6e4eb83d5241aeb062

Download Submit
memory/4856-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads