locky | 21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6

General

Target

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.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 4 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

description	ioc	process
File opened for modification	\??\c:\Users\Admin\Pictures\ShowGrant.tiff	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe
File opened for modification	\??\c:\Users\Admin\Pictures\StartResolve.tiff	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe
File opened for modification	\??\c:\Users\Admin\Pictures\WatchStart.tiff	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe
File opened for modification	\??\c:\Users\Admin\Pictures\CompleteBlock.tiff	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\DesktopOSIRIS.bmp"	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.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:

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Control Panel\Desktop\WallpaperStyle = "0"	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Control Panel\Desktop\TileWallpaper = "0"	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

Modifies Internet Explorer settings 1 TTPs 36 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = a01b9ce8cf92d801	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "364052391"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000962422cf799f2f46a7e75b376cef3c3c000000000200000000001066000000010000200000009803faecc2b55b82a732d3813a16a1105445048d37d5a1456b023d4cbfd179b4000000000e800000000200002000000055fcbbee645264078afde4427319d268945945e198123592f3b19374167c406c20000000bc02ffeb434afd6b2fd5f0202a78d69012b66e3ef3d4b547f6c4d3973ea45134400000006c0e4b56f94be932d386b707957eeb4170f1af467df7ae5fcdfb033909c9f694e8b09a9586ce2991f9eef0d0dfe41537851bb09ad89a35d0ceaf09e9b1e65767	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{056A1981-FEC3-11EC-8E39-DE95627D9645} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

pid process

1032 21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

pid	process
1032	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

AUDIODG.EXE

description	pid	process
Token: 33	1000	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1000	AUDIODG.EXE
Token: 33	1000	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1000	AUDIODG.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

iexplore.exeDllHost.exe

pid process

1524 iexplore.exe
632 DllHost.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1524 iexplore.exe
1524 iexplore.exe
1004 IEXPLORE.EXE
1004 IEXPLORE.EXE

pid	process
1524	iexplore.exe
632	DllHost.exe

pid	process
1524	iexplore.exe
1524	iexplore.exe
1004	IEXPLORE.EXE
1004	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exeiexplore.exe

description	pid	process	target process
PID 1032 wrote to memory of 1524	1032	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	iexplore.exe
PID 1032 wrote to memory of 1524	1032	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	iexplore.exe
PID 1032 wrote to memory of 1524	1032	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	iexplore.exe
PID 1032 wrote to memory of 1524	1032	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	iexplore.exe
PID 1524 wrote to memory of 1004	1524	iexplore.exe	IEXPLORE.EXE
PID 1524 wrote to memory of 1004	1524	iexplore.exe	IEXPLORE.EXE
PID 1524 wrote to memory of 1004	1524	iexplore.exe	IEXPLORE.EXE
PID 1524 wrote to memory of 1004	1524	iexplore.exe	IEXPLORE.EXE
PID 1032 wrote to memory of 304	1032	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	cmd.exe
PID 1032 wrote to memory of 304	1032	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	cmd.exe
PID 1032 wrote to memory of 304	1032	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	cmd.exe
PID 1032 wrote to memory of 304	1032	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe
"C:\Users\Admin\AppData\Local\Temp\21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe"
1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1032

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:1524

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1524 CREDAT:275457 /prefetch:2
3⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1004

C:\Windows\SysWOW64\cmd.exe
cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe"
2⤵
PID:304

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x4c8
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1000

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:632

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\VJPM0MT3.txt
Filesize
608B

MD5
acc54942a7f9b8a112d59180b2b9174b

SHA1
45d6bc7b4a9152f227cfa9cefbed811684e6fc48

SHA256
41cce3245996e0dfd8a3d3b293afc87b9f060f31fde27342304577861de7c34b

SHA512
474281fde9ed3d8bdcfdf73399234c2ef2a82b527f28411ae57c3c545b9a44e824e6c92bc29e2fd7197b0dc262885fb31a114400539205ff0c423ec483bff7fe

Download Submit
C:\Users\Admin\DesktopOSIRIS.bmp
Filesize
3.4MB

MD5
5031f31c470595a1390358728e30e527

SHA1
a122ce032945231abbf2859523fd8cda8d9f4057

SHA256
965ffcd671a2cfb304678c77fa06392194c15c9cfb1864b0050ed7f2b7adb5e2

SHA512
e5a8e46dfb392371ad3e336b11fc106cfc8f7f3c56b58410638229856f3761b9e272130c56db4958338faaa3ce8fcbfb19e57394a98d47463168ca4d00db9f48

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

MD5
0ea14921853b18d6eba56be1bc1ee2d0

SHA1
0d351d4f7009d17c584d14ffefdcaa58601f7cd5

SHA256
0519a8dd784ccd2b3d97caa480d4ac53edf71f573002e9fca031d72218b88622

SHA512
2871e0b4661b6b4dfd3c0074dc35134cba7d08b2e1bbf33b15c7d183d650e67786fe43f757d1af11fa4f7eb64f8d440892b1f3d60ced46d6cf703fdad9d0c78d

Download Submit
memory/304-60-0x0000000000000000-mapping.dmp

Download
memory/1032-54-0x00000000758D1000-0x00000000758D3000-memory.dmp

Filesize
8KB

Download
memory/1032-55-0x0000000003040000-0x0000000003C8A000-memory.dmp

Filesize
12.3MB

Download
memory/1032-56-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1032-58-0x0000000003040000-0x0000000003C8A000-memory.dmp

Filesize
12.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads