locky | 4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6

General

Target

4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe
Size

142KB
MD5

9dcb4b2e20be4c6d1f4bf4c2bf042bf2
SHA1

f330758e727a129a4a9e8e031076c38b98efc2a6
SHA256

4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6
SHA512

67233aa8925420e8024b42ce5e2cbff9266ed8d539496a8976c5dfa284b457ccd93882ee4294488110f3099030d27afd85cf2c85f49d6b8bb81693bb8704ca16

Score

10^/10

locky locky_osiris ransomware suricata

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
suricata: ET MALWARE Locky CnC Checkin Dec 5 M1
suricata
suricata: ET MALWARE Locky CnC Checkin HTTP Pattern
suricata

Modifies extensions of user files 1 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe

description	ioc	process
File opened for modification	\??\c:\Users\Admin\Pictures\SubmitDismount.tiff	4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1200 cmd.exe

pid	process
1200	cmd.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\DesktopOSIRIS.bmp"	4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.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:

4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallpaperStyle = "0"	4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\TileWallpaper = "0"	4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe

Modifies Internet Explorer settings 1 TTPs 23 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{3CB4F3F1-EE28-11EB-9E73-C65640CBF56B} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

1812 iexplore.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1812 iexplore.exe
1812 iexplore.exe
1196 IEXPLORE.EXE
1196 IEXPLORE.EXE

pid	process
1812	iexplore.exe

pid	process
1812	iexplore.exe
1812	iexplore.exe
1196	IEXPLORE.EXE
1196	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exeiexplore.exe

description	pid	process	target process
PID 1060 wrote to memory of 1812	1060	4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe	iexplore.exe
PID 1060 wrote to memory of 1812	1060	4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe	iexplore.exe
PID 1060 wrote to memory of 1812	1060	4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe	iexplore.exe
PID 1060 wrote to memory of 1812	1060	4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe	iexplore.exe
PID 1812 wrote to memory of 1196	1812	iexplore.exe	IEXPLORE.EXE
PID 1812 wrote to memory of 1196	1812	iexplore.exe	IEXPLORE.EXE
PID 1812 wrote to memory of 1196	1812	iexplore.exe	IEXPLORE.EXE
PID 1812 wrote to memory of 1196	1812	iexplore.exe	IEXPLORE.EXE
PID 1060 wrote to memory of 1200	1060	4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe	cmd.exe
PID 1060 wrote to memory of 1200	1060	4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe	cmd.exe
PID 1060 wrote to memory of 1200	1060	4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe	cmd.exe
PID 1060 wrote to memory of 1200	1060	4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe
"C:\Users\Admin\AppData\Local\Temp\4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe"
1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Suspicious use of WriteProcessMemory
PID:1060

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:1812

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1812 CREDAT:275457 /prefetch:2
3⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1196

C:\Windows\SysWOW64\cmd.exe
cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\4d5120b49993002b1a1a77298b0e9e486a0aa75eb9fb14fe3c6682a9870203f6.sample.exe"
2⤵
- Deletes itself
PID:1200

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
PID:1160

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\DesktopOSIRIS.htm

MD5
aaca2ac19394d0c2c65375867e557c05

SHA1
5be699c3ad0165330208bc2495aa46b469b9d1b9

SHA256
ec8eb9fcaba652db0a785d97aca7fbb9fef6e2bc92d5e60470ef040b63b5aef2

SHA512
299eb597f684ac3e8255538371c4dd1a35997945be451974134a651faeaa4ed222019f92776c94c922b2ed26409492d0bd13105422d0c4500e76168c47a03cf6

Download Submit
memory/1060-60-0x0000000075C31000-0x0000000075C33000-memory.dmp

Filesize
8KB

Download
memory/1060-61-0x0000000000090000-0x00000000000B7000-memory.dmp

Filesize
156KB

Download
memory/1060-62-0x0000000000070000-0x0000000000071000-memory.dmp

Filesize
4KB

Download
memory/1160-67-0x0000000000160000-0x0000000000162000-memory.dmp

Filesize
8KB

Download
memory/1160-69-0x00000000001A0000-0x00000000001A1000-memory.dmp

Filesize
4KB

Download
memory/1196-64-0x0000000000000000-mapping.dmp

Download
memory/1200-68-0x0000000000000000-mapping.dmp

Download
memory/1812-63-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads