c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691

General

Target

c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Size

76KB
MD5

d3ffc413791353d1871b8762af99a26f
SHA1

1b5423664b64e192396380e7ade5f6f5b9f79e99
SHA256

c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691
SHA512

bb775b7f121d08fb4e11053308f10979cef9b2b3f6620562b535c33d8ce06693cb331cc8096ee4d41772f250514ab286314e7edcf3ea99fbd0bcc2c1dc6ef5e2
SSDEEP

768:sembNRqsuhlGOBrhgFwumSCbxTGy/BBGg4NKJJKqUThbJ32+ve7i40vN0TlT+Xk/:mnqdu3abBGy3G8V0iuo22

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:

c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exenvc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	nvc.exe

Modifies visibility of file extensions in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exenvc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	nvc.exe

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

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exenvc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	nvc.exe

Executes dropped EXE 1 IoCs

Processes:

nvc.exe

pid process

1892 nvc.exe

pid	process
1892	nvc.exe

Loads dropped DLL 2 IoCs

Processes:

c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe

pid	process
1280	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
1280	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

nvc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	nvc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VisualStyle = "c:\\windows\\system32\\Desktop.sysm"	nvc.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:

nvc.exe

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

Drops file in System32 directory 6 IoCs

Processes:

c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exenvc.exe

description	ioc	process
File created	\??\c:\windows\SysWOW64\maxtrox.txt	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
File created	\??\c:\windows\SysWOW64\Windows 3D.scr	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
File opened for modification	\??\c:\windows\SysWOW64\maxtrox.txt	nvc.exe
File opened for modification	\??\c:\windows\SysWOW64\Windows 3D.scr	nvc.exe
File created	\??\c:\windows\SysWOW64\Desktop.sysm	nvc.exe
File created	\??\c:\windows\SysWOW64\CommandPrompt.Sysm	nvc.exe

Drops file in Program Files directory 34 IoCs

Processes:

nvc.exe

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

Modifies registry class 36 IoCs

Processes:

c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exenvc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\NeverShowExt	nvc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command	nvc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\NeverShowExt	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon\ = "c:\\windows\\SysWow64\\rasphone.exe"	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon\ = "c:\\windows\\SysWow64\\rasphone.exe"	nvc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm	nvc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon\ = "c:\\windows\\SysWow64\\netsetup.exe"	nvc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command\ = "%1"	nvc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	nvc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\ = "System Mechanic"	nvc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\NeverShowExt	nvc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command\ = "%1"	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\ = "Microsoft System Direct"	nvc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon	nvc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command\ = "%1"	nvc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command\ = "%1"	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\Shell\Open\Command	nvc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\ = "Microsoft System Direct"	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\DefaultIcon\ = "c:\\windows\\SysWow64\\netsetup.exe"	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\NeverShowExt	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd\DefaultIcon	nvc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.Msd	nvc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\ = "System Mechanic"	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.sysm\Shell\Open\Command	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	nvc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exenvc.exe

pid process

1280 c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
1892 nvc.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe

description	pid	process	target process
PID 1280 wrote to memory of 1892	1280	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe	nvc.exe
PID 1280 wrote to memory of 1892	1280	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe	nvc.exe
PID 1280 wrote to memory of 1892	1280	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe	nvc.exe
PID 1280 wrote to memory of 1892	1280	c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe	nvc.exe

C:\Users\Admin\AppData\Local\Temp\c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe
"C:\Users\Admin\AppData\Local\Temp\c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691.exe"
1⤵
- Modifies system executable filetype association
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1280

\??\c:\Documents and Settings\Admin\Application Data\Microsoft\nvc.exe
"c:\Documents and Settings\Admin\Application Data\Microsoft\nvc.exe" c74aa78fdabfcc102a6e8ebff531406224f95764da1bb752040dc8d950181691
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:1892

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\nvc.exe

Filesize
76KB

MD5
0eebe69417438a62e73ab2895096c6d0

SHA1
fcba86c6ac7ac9c0650cdd32e03c8c9fb4b5808b

SHA256
b56eb234f1dfa08e79b945c8cd26424302f11f32b1b53dd4f2d2f196833cb057

SHA512
eb4fc05cdb42917b569037b6e68dfcce584540116dd149d7fe1f3aef704d1c076585cbf54b8d4a07e7412b7c3982ef2abc954a2f503b89a9fd40c0c7043405a0

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

Filesize
76KB

MD5
0eebe69417438a62e73ab2895096c6d0

SHA1
fcba86c6ac7ac9c0650cdd32e03c8c9fb4b5808b

SHA256
b56eb234f1dfa08e79b945c8cd26424302f11f32b1b53dd4f2d2f196833cb057

SHA512
eb4fc05cdb42917b569037b6e68dfcce584540116dd149d7fe1f3aef704d1c076585cbf54b8d4a07e7412b7c3982ef2abc954a2f503b89a9fd40c0c7043405a0

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

Filesize
76KB

MD5
532a77b7c590b469e0c915972486e198

SHA1
729b2eff0eb0cf5f46f2bf33818f3fc5323ae0ab

SHA256
530a85c1957a9f30f6a7aaeecfc4f5c8186b48c1c94793300977a9faa667ef0b

SHA512
10633ac89f4c94d790bd43de7ccdf22a55da07a0ca8f99917a7fbf473c03dc2ef96d873ebb3f795d36d4b9febc7394c663f3ac7ca242276893ab0789d94a40d2

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

Filesize
8B

MD5
24865ca220aa1936cbac0a57685217c5

SHA1
37f687cafe79e91eae6cbdffbf2f7ad3975f5e83

SHA256
841e95fa333ed89085bfbab19bb658d96ed0c837d25721411233fa55c860c743

SHA512
c8d3f514c72f48fed5de9582c4252cf5466a9d32866d8df3631ba9274ed734bb95139e4909e8116a10947fc1afa1dbeb33809da6ec050e6e4eb83d5241aeb062

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\nvc.exe

Filesize
76KB

MD5
0eebe69417438a62e73ab2895096c6d0

SHA1
fcba86c6ac7ac9c0650cdd32e03c8c9fb4b5808b

SHA256
b56eb234f1dfa08e79b945c8cd26424302f11f32b1b53dd4f2d2f196833cb057

SHA512
eb4fc05cdb42917b569037b6e68dfcce584540116dd149d7fe1f3aef704d1c076585cbf54b8d4a07e7412b7c3982ef2abc954a2f503b89a9fd40c0c7043405a0

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\nvc.exe

Filesize
76KB

MD5
0eebe69417438a62e73ab2895096c6d0

SHA1
fcba86c6ac7ac9c0650cdd32e03c8c9fb4b5808b

SHA256
b56eb234f1dfa08e79b945c8cd26424302f11f32b1b53dd4f2d2f196833cb057

SHA512
eb4fc05cdb42917b569037b6e68dfcce584540116dd149d7fe1f3aef704d1c076585cbf54b8d4a07e7412b7c3982ef2abc954a2f503b89a9fd40c0c7043405a0

Download Submit
memory/1892-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads