locky | 21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6

General

Target

lockit.exe
Size

372KB
MD5

e3b3e285390c0e2f7d04bd040bec790d
SHA1

dbee71535e9f1fb23b3f01e25989d22d51237e68
SHA256

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6
SHA512

6156a6b0ff4f41c823cba68a4596676e357ceb5b8c0848c2828a72321dbc2a731d9ae8f1a417fe27aef7de0080001ad3f77b3809b64a93c610ae99f95b35f5be

Score

10^/10

locky locky_osiris ransomware

Malware Config

Signatures

Locky
Ransomware strain released in 2016, with advanced features like anti-analysis.
ransomware locky
Locky (Osiris variant)
Variant of the Locky ransomware seen in the wild since early 2017.
ransomware locky_osiris
Modifies extensions of user files 1 IoCs
Ransomware generally changes the extension on encrypted files.
ransomware

Processes:

lockit.exe

description ioc process

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

Processes:

cmd.exe

pid process

948 cmd.exe

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

pid	process
948	cmd.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

lockit.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\DesktopOSIRIS.bmp"	lockit.exe

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

System Information Discovery
T1082

Modifies Control Panel 2 IoCs

evasion

Processes:

lockit.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Control Panel\Desktop\WallpaperStyle = "0"	lockit.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Control Panel\Desktop\TileWallpaper = "0"	lockit.exe

Modifies Internet Explorer settings 1 TTPs 36 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{0F700021-2EA3-11EC-A1A5-C2A3A902DBDF} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 20ca98e5afc2d701	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000005bf5749d3a275447873d564a46cb193600000000020000000000106600000001000020000000ca9a18a44a1e310923782d5d8d2744615301475623013f5f4348f478f6aa769d000000000e80000000020000200000007118adf659440f875d0cf3eb9f0ea8b11f59f763edec956d7907b98e7630603120000000daa2f176672e8a47bea3883cf105e118e723c9e3a915b3647d6b22406d54f35740000000578f1aa438d1449f94e6329556e288200721f348b5c6198b27b25e851370ee0db2aa292498b5449095471357e62d4e9804445b4bd2fc844e6785dd8677b01256	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "341168820"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

lockit.exe

pid process

1572 lockit.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

iexplore.exeDllHost.exe

pid process

852 iexplore.exe
1928 DllHost.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

852 iexplore.exe
852 iexplore.exe
884 IEXPLORE.EXE
884 IEXPLORE.EXE

pid	process
1572	lockit.exe

pid	process
852	iexplore.exe
1928	DllHost.exe

pid	process
852	iexplore.exe
852	iexplore.exe
884	IEXPLORE.EXE
884	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

lockit.exeiexplore.exe

description	pid	process	target process
PID 1572 wrote to memory of 852	1572	lockit.exe	iexplore.exe
PID 1572 wrote to memory of 852	1572	lockit.exe	iexplore.exe
PID 1572 wrote to memory of 852	1572	lockit.exe	iexplore.exe
PID 1572 wrote to memory of 852	1572	lockit.exe	iexplore.exe
PID 1572 wrote to memory of 948	1572	lockit.exe	cmd.exe
PID 1572 wrote to memory of 948	1572	lockit.exe	cmd.exe
PID 1572 wrote to memory of 948	1572	lockit.exe	cmd.exe
PID 1572 wrote to memory of 948	1572	lockit.exe	cmd.exe
PID 852 wrote to memory of 884	852	iexplore.exe	IEXPLORE.EXE
PID 852 wrote to memory of 884	852	iexplore.exe	IEXPLORE.EXE
PID 852 wrote to memory of 884	852	iexplore.exe	IEXPLORE.EXE
PID 852 wrote to memory of 884	852	iexplore.exe	IEXPLORE.EXE

C:\Users\Admin\AppData\Local\Temp\lockit.exe
"C:\Users\Admin\AppData\Local\Temp\lockit.exe"
1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1572

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\DesktopOSIRIS.htm
2⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:852

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:852 CREDAT:275457 /prefetch:2
3⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:884

C:\Windows\SysWOW64\cmd.exe
cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\lockit.exe"
2⤵
- Deletes itself
PID:948

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1928

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1

T1491

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\KD5MQWHP.txt
MD5
557f59472504984f70b6e1b0cc009164

SHA1
b284c38d3a54ec227ef56ce59940242c9fc83b43

SHA256
de836c49238800ec12e13a2b6118de78adf14c300598db0d5c795c03cb4a2f7a

SHA512
f08637adff5b5b275db1dcc9916937cfb3ac9cadee52043fcf3ad249be300cc76642b4b8faba4b8e2392732dd7748ee66e38313a8923e49d998296d11f6ec345

Download Submit
C:\Users\Admin\DesktopOSIRIS.bmp
MD5
efa41ed6905063e3b2b5b2a39b807186

SHA1
220cada293f478a140116f5c9ddb062253254538

SHA256
13f90453a7d022221c3862318733ecf4c4e941c79ec42beed6680ad48908250a

SHA512
a27c1913f2d5f59babd78e9b2f78d1e4f7dfae2607225cc5d807240407b7410fd5b455279f17c98d20bc9a6df8203c5c36639f9ce0fde699fc0f80584ad8d290

Download Submit
C:\Users\Admin\DesktopOSIRIS.htm
MD5
4a5ca6f80b9a83711b355a93bd34e5bc

SHA1
20fb0b2c6d257cb42fceeef0e1827c5315eb0200

SHA256
b90aabe8d5b245dbc5f9ef0fb7ef9290f4db2e61da38b8354ddfaf7be768087e

SHA512
757bb8b9fc24873cec6961eeedc382b1f25006ef5f3c640089217a14c6bc802a5e9500d1eef6f0e48709575de1c8df8b5befeddebbe7e65d01c3dcde372b3d0b

Download Submit
memory/852-61-0x0000000000000000-mapping.dmp

Download
memory/852-62-0x000007FEFB7E1000-0x000007FEFB7E3000-memory.dmp

Filesize
8KB

Download
memory/884-66-0x0000000000000000-mapping.dmp

Download
memory/948-65-0x0000000000000000-mapping.dmp

Download
memory/1572-59-0x0000000003030000-0x0000000003C7A000-memory.dmp

Filesize
12.3MB

Download
memory/1572-54-0x0000000075AC1000-0x0000000075AC3000-memory.dmp

Filesize
8KB

Download
memory/1572-60-0x0000000002170000-0x0000000002171000-memory.dmp

Filesize
4KB

Download
memory/1572-57-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1572-56-0x0000000002170000-0x0000000002171000-memory.dmp

Filesize
4KB

Download
memory/1572-55-0x0000000003030000-0x0000000003C7A000-memory.dmp

Filesize
12.3MB

Download
memory/1928-64-0x00000000001A0000-0x00000000001A2000-memory.dmp

Filesize
8KB

Download
memory/1928-67-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads