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 3 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

lockit.exe

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

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1828 cmd.exe

pid	process
1828	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-1-5-21-3456797065-1076791440-4146276586-1000\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-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\Desktop\TileWallpaper = "0"	lockit.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\Desktop\WallpaperStyle = "0"	lockit.exe

Modifies Internet Explorer settings 1 TTPs 36 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Set value (data)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000005f45a3407a6eee4cb6062dddd85478a600000000020000000000106600000001000020000000b5bb12edbad24e9301bc02b9a87e7d15c72577bdec7cbaca460f5cd6e1c11772000000000e800000000200002000000038692b7a0699e195ff3466fbd4ff86e6d3f78dad30b9da8ba98f94d5ab6f448620000000af884abc8d00210aeebc166a14510ae7a6bb92ea1b112bd6596c4890d809222e40000000412549c20c045670598c292aa56d95a466734995b1a27e8cb2ab26e9f29e06648995af01ac3184af470a027fbdc178f0bab8b1c0136672cc45af1bd2c4919a09	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = c0dacb33a1c2d701	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "341162510"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{5E50E4C1-2E94-11EC-B2E0-EE548F012901} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

lockit.exe

pid process

1232 lockit.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

iexplore.exeDllHost.exe

pid process

1200 iexplore.exe
1092 DllHost.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1200 iexplore.exe
1200 iexplore.exe
2012 IEXPLORE.EXE
2012 IEXPLORE.EXE

pid	process
1232	lockit.exe

pid	process
1200	iexplore.exe
1092	DllHost.exe

pid	process
1200	iexplore.exe
1200	iexplore.exe
2012	IEXPLORE.EXE
2012	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

lockit.exeiexplore.exe

description	pid	process	target process
PID 1232 wrote to memory of 1200	1232	lockit.exe	iexplore.exe
PID 1232 wrote to memory of 1200	1232	lockit.exe	iexplore.exe
PID 1232 wrote to memory of 1200	1232	lockit.exe	iexplore.exe
PID 1232 wrote to memory of 1200	1232	lockit.exe	iexplore.exe
PID 1232 wrote to memory of 1828	1232	lockit.exe	cmd.exe
PID 1232 wrote to memory of 1828	1232	lockit.exe	cmd.exe
PID 1232 wrote to memory of 1828	1232	lockit.exe	cmd.exe
PID 1232 wrote to memory of 1828	1232	lockit.exe	cmd.exe
PID 1200 wrote to memory of 2012	1200	iexplore.exe	IEXPLORE.EXE
PID 1200 wrote to memory of 2012	1200	iexplore.exe	IEXPLORE.EXE
PID 1200 wrote to memory of 2012	1200	iexplore.exe	IEXPLORE.EXE
PID 1200 wrote to memory of 2012	1200	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:1232

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:1200

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1200 CREDAT:275457 /prefetch:2
3⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2012

C:\Windows\SysWOW64\cmd.exe
cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\lockit.exe"
2⤵
- Deletes itself
PID:1828

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1092

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Defacement

1

T1491

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\IT7NH1AK.txt
MD5
67aef63b6d2e96e46870ae1be360b9f8

SHA1
86a79775ae2443cb35f5f0cf032bd093e16386d7

SHA256
f3da92a2cfa31f97fe062d917b93c91af3e4febc4fe4ef702fb4a4da857f61c5

SHA512
bd34bb914b6462ad75a144cdaad7b75c5fd228a2fe36d2d348f988e9f655b272d2859aa935d3e2d341a646bc251970c9b560b430164878273f7eea2352c6c2d0

Download Submit
C:\Users\Admin\DesktopOSIRIS.bmp
MD5
405b97b9d7ad474a0876b38b3407b314

SHA1
16bf8ff015acefab81c909cc85b685ee8440b1c4

SHA256
dfec3ffd264a0a3d170a1b242908466e68998d93a5d47a0e7f758d59a0176582

SHA512
be74c9d2de18c8236b041f7e32a3e9b56e2ffa30c85d725925724c5241c374ac9610f7490c68d0ed67a12d0ee31546a5ff503fb4799cf73779ae8f2d54cee34f

Download Submit
C:\Users\Admin\DesktopOSIRIS.htm
MD5
448fc0b2b33a8db81ebda303b547ad40

SHA1
f6a76f14b0badcef3346c73bcdacf4f8b191ef0e

SHA256
af1e88e66db49e1332c8e3806a448f2a26be86235dd4cb9917cac800d54df5ea

SHA512
ad09b0268204a7b421b4a64371b89e2282a73df30236aaeb234474299568603c54d73e4387896302877066678810a5311db6a13d830f7b7f4a08c0a61a93c139

Download Submit
memory/1092-62-0x00000000001E0000-0x00000000001E2000-memory.dmp

Filesize
8KB

Download
memory/1092-64-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/1200-60-0x0000000000000000-mapping.dmp

Download
memory/1232-53-0x0000000074F81000-0x0000000074F83000-memory.dmp

Filesize
8KB

Download
memory/1232-59-0x00000000020D0000-0x00000000020D1000-memory.dmp

Filesize
4KB

Download
memory/1232-58-0x0000000003140000-0x0000000003D8A000-memory.dmp

Filesize
12.3MB

Download
memory/1232-56-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1232-54-0x0000000003140000-0x0000000003D8A000-memory.dmp

Filesize
12.3MB

Download
memory/1232-55-0x00000000020D0000-0x00000000020D1000-memory.dmp

Filesize
4KB

Download
memory/1828-63-0x0000000000000000-mapping.dmp

Download
memory/2012-65-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads