locky | 4d6aa12717b547f1e5ea64a0ec5ae70e569a5f87d10dee4beb8dee135eb0d24e

General

Target

jhdsgvc74.exe
Size

654KB
MD5

693ef59145aa6b9e329f91538855ef64
SHA1

e3067d7c7227af026c0abfbdf7b417c4e294f380
SHA256

3a810cbad7296f83122c4a16b935a723d8019419069a55c939d93c246abed2ac
SHA512

3f0ad7a869823d63d1867f4bf2322e88a909324bab80e7e6d8906237db0aea669326030f16a337980681cfd94c86a955ccb2747ff41be0bf75da112a53693a6b

Score

10^/10

locky ransomware

Malware Config

Signatures

Locky
Ransomware strain released in 2016, with advanced features like anti-analysis.
ransomware locky
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490
Modifies extensions of user files 1 IoCs
Ransomware generally changes the extension on encrypted files.
ransomware

Processes:

jhdsgvc74.exe

description ioc process

File opened for modification \??\c:\Users\Admin\Pictures\DebugUnlock.tiff jhdsgvc74.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1908 cmd.exe

description	ioc	process
File opened for modification	\??\c:\Users\Admin\Pictures\DebugUnlock.tiff	jhdsgvc74.exe

pid	process
1908	cmd.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

jhdsgvc74.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\ykcol.bmp"	jhdsgvc74.exe

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

System Information Discovery
T1082
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Processes:

vssadmin.exe

pid process

1140 vssadmin.exe

pid	process
1140	vssadmin.exe

Modifies Control Panel 2 IoCs

evasion

Processes:

jhdsgvc74.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\Desktop\TileWallpaper = "0"	jhdsgvc74.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\Desktop\WallpaperStyle = "0"	jhdsgvc74.exe

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000850f07ecb424934d8f5a48a59e73cec000000000020000000000106600000001000020000000983365a17b44c5700ef79cca8c163ecf296d230da778cbb5867dd20a9e174d95000000000e8000000002000020000000b30c3320b7f9d4e87afda83a3a3ee241d3d862c0a5b1cc9f354d3b90aca6d54c2000000035ecb753d8bd0437e12ec74cbfd4893016e74f5118e6bbcf9499609dd91f5f36400000004c23a6a0023f8645b3b528097a1599017e0dbdded5a09b64353b25448e86be1b15ab0d422740db4201b8df98e490527b5e44f084760ab48623f9c31698371a08	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 2053d0baaf95d801	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{E45B7491-01A2-11ED-AFC1-4E0428891AFE} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 2036 vssvc.exe
Token: SeRestorePrivilege 2036 vssvc.exe
Token: SeAuditPrivilege 2036 vssvc.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

iexplore.exeDllHost.exe

pid process

788 iexplore.exe
1616 DllHost.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

788 iexplore.exe
788 iexplore.exe
1820 IEXPLORE.EXE
1820 IEXPLORE.EXE

description	pid	process
Token: SeBackupPrivilege	2036	vssvc.exe
Token: SeRestorePrivilege	2036	vssvc.exe
Token: SeAuditPrivilege	2036	vssvc.exe

pid	process
788	iexplore.exe
1616	DllHost.exe

pid	process
788	iexplore.exe
788	iexplore.exe
1820	IEXPLORE.EXE
1820	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

taskeng.exejhdsgvc74.exeiexplore.exe

description	pid	process	target process
PID 748 wrote to memory of 1140	748	taskeng.exe	vssadmin.exe
PID 748 wrote to memory of 1140	748	taskeng.exe	vssadmin.exe
PID 748 wrote to memory of 1140	748	taskeng.exe	vssadmin.exe
PID 1976 wrote to memory of 788	1976	jhdsgvc74.exe	iexplore.exe
PID 1976 wrote to memory of 788	1976	jhdsgvc74.exe	iexplore.exe
PID 1976 wrote to memory of 788	1976	jhdsgvc74.exe	iexplore.exe
PID 1976 wrote to memory of 788	1976	jhdsgvc74.exe	iexplore.exe
PID 1976 wrote to memory of 1908	1976	jhdsgvc74.exe	cmd.exe
PID 1976 wrote to memory of 1908	1976	jhdsgvc74.exe	cmd.exe
PID 1976 wrote to memory of 1908	1976	jhdsgvc74.exe	cmd.exe
PID 1976 wrote to memory of 1908	1976	jhdsgvc74.exe	cmd.exe
PID 788 wrote to memory of 1820	788	iexplore.exe	IEXPLORE.EXE
PID 788 wrote to memory of 1820	788	iexplore.exe	IEXPLORE.EXE
PID 788 wrote to memory of 1820	788	iexplore.exe	IEXPLORE.EXE
PID 788 wrote to memory of 1820	788	iexplore.exe	IEXPLORE.EXE

C:\Users\Admin\AppData\Local\Temp\jhdsgvc74.exe
"C:\Users\Admin\AppData\Local\Temp\jhdsgvc74.exe"
1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Suspicious use of WriteProcessMemory
PID:1976

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\ykcol.htm
2⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:788

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:788 CREDAT:275457 /prefetch:2
3⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1820

C:\Windows\SysWOW64\cmd.exe
cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\jhdsgvc74.exe"
2⤵
- Deletes itself
PID:1908

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2036

C:\Windows\system32\taskeng.exe
taskeng.exe {F2A9614E-B49B-40B6-A41A-E8C39864C1EF} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:748

C:\Windows\system32\vssadmin.exe
C:\Windows\system32\vssadmin.exe Delete Shadows /Quiet /All
2⤵
- Interacts with shadow copies
PID:1140

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1616

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2

T1490

Defacement

1

T1491

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Downloads

C:\Users\Admin\Desktop\ykcol.bmp
Filesize
3.3MB

MD5
b2e02d7dfe91d736b572839525463934

SHA1
e5b1eb8ac1ea43b1ade161a3f35d27c225ef85d7

SHA256
8346fb664f8147ef84abd158f9b7be8ca9403210e904b422628ffcda7f780801

SHA512
43da87f0ed77f925622e5e82786d83bd5c9e23831c66e8a290db84a792768a426d8db66a0caa48780bc874673cc61f8ca828c1695833b1547f805acc1d1e76e3

Download Submit
C:\Users\Admin\Desktop\ykcol.htm
Filesize
8KB

MD5
9543a7ab7ca42d857b9a7e8d6e31f288

SHA1
46014116615dbe68e3c1e8247dd5fd1bd3ebe5f7

SHA256
b81265670f12788a2902e998f9302f2e485c068d6fb8cfa8e8e3d78fd4d838a9

SHA512
0696c8893669b3183c239c5e2da366205b0e54f022b7d4defe4b67e538d48f0067c55504a8a8190e9c9e7f086f431975732970a14b0be83bb4cb7357c0029414

Download Submit
memory/1140-57-0x0000000000000000-mapping.dmp

Download
memory/1908-59-0x0000000000000000-mapping.dmp

Download
memory/1976-54-0x00000000750C1000-0x00000000750C3000-memory.dmp

Filesize
8KB

Download
memory/1976-55-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1976-56-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads