locky | f329ea2c754ab196d15c20fbf9abd722fa63630631144c5a409bd2a20172196b

General

Target

V7bTrYJ4lbO6OS.dll
Size

159KB
MD5

7932ee5fa6f83b149569752c47e04b87
SHA1

6eb115feadc5808507fb5a666dd18aa89a45616c
SHA256

f329ea2c754ab196d15c20fbf9abd722fa63630631144c5a409bd2a20172196b
SHA512

17ba26e69f7536f5adaa52454fbd407338be61d97bc396baa591de9fa19aab3e539b4ca32059b2ddb1b901ac7ecd341dff9ead706fc0d058086e6b3795642f58
SSDEEP

3072:pusrpo1j49JvKa0ePbh37E6ZO78buZKxrF:ZQcvKpE37E6nmKhF

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
Blocklisted process makes network request 6 IoCs

Processes:

rundll32.exe

flow pid process

1 1564 rundll32.exe
2 1564 rundll32.exe
3 1564 rundll32.exe
5 1564 rundll32.exe
6 1564 rundll32.exe
7 1564 rundll32.exe

flow	pid	process
1	1564	rundll32.exe
2	1564	rundll32.exe
3	1564	rundll32.exe
5	1564	rundll32.exe
6	1564	rundll32.exe
7	1564	rundll32.exe

Modifies extensions of user files 2 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

rundll32.exe

description	ioc	process
File opened for modification	\??\c:\Users\Admin\Pictures\PingWatch.tiff	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Pictures\ResumeEnter.tiff	rundll32.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\DesktopOSIRIS.bmp"	rundll32.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:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Control Panel\Desktop\WallpaperStyle = "0"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Control Panel\Desktop\TileWallpaper = "0"	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 36 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000048ca5449a4d21846ba8a995ea0abd35a000000000200000000001066000000010000200000002f7900da87540ca7c35aff4e078e184088f80e9efcccde7060384df7bc68b6f4000000000e8000000002000020000000f97e42d6bca86bb92e07b8f027f8a3c207b49520c915cb1e4060ab4a26f12c0d20000000ea2735c69a24b697eb469768f9aa6a32e85206aac83b1f5625480578ca501aba400000009e7e753ec0b7db9db1b0246ebfe312777aec31e5746b7650f27a8705788cbad649689cc58b8cc4c609207b72fb3b45823b17a743d9d79d479e6bc88c9c897a34	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = d07630fa97cbd801	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{247078F1-378B-11ED-BDDC-626677DD231B} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "370295609"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

iexplore.exeDllHost.exe

pid process

1308 iexplore.exe
1532 DllHost.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1308 iexplore.exe
1308 iexplore.exe
1744 IEXPLORE.EXE
1744 IEXPLORE.EXE

pid	process
1308	iexplore.exe
1532	DllHost.exe

pid	process
1308	iexplore.exe
1308	iexplore.exe
1744	IEXPLORE.EXE
1744	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

rundll32.exerundll32.exeiexplore.exe

description	pid	process	target process
PID 1536 wrote to memory of 1564	1536	rundll32.exe	rundll32.exe
PID 1536 wrote to memory of 1564	1536	rundll32.exe	rundll32.exe
PID 1536 wrote to memory of 1564	1536	rundll32.exe	rundll32.exe
PID 1536 wrote to memory of 1564	1536	rundll32.exe	rundll32.exe
PID 1536 wrote to memory of 1564	1536	rundll32.exe	rundll32.exe
PID 1536 wrote to memory of 1564	1536	rundll32.exe	rundll32.exe
PID 1536 wrote to memory of 1564	1536	rundll32.exe	rundll32.exe
PID 1564 wrote to memory of 1308	1564	rundll32.exe	iexplore.exe
PID 1564 wrote to memory of 1308	1564	rundll32.exe	iexplore.exe
PID 1564 wrote to memory of 1308	1564	rundll32.exe	iexplore.exe
PID 1564 wrote to memory of 1308	1564	rundll32.exe	iexplore.exe
PID 1308 wrote to memory of 1744	1308	iexplore.exe	IEXPLORE.EXE
PID 1308 wrote to memory of 1744	1308	iexplore.exe	IEXPLORE.EXE
PID 1308 wrote to memory of 1744	1308	iexplore.exe	IEXPLORE.EXE
PID 1308 wrote to memory of 1744	1308	iexplore.exe	IEXPLORE.EXE

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\V7bTrYJ4lbO6OS.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1536

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\V7bTrYJ4lbO6OS.dll,#1
2⤵
- Blocklisted process makes network request
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Suspicious use of WriteProcessMemory
PID:1564

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\DesktopOSIRIS.htm
3⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1308

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1308 CREDAT:275457 /prefetch:2
4⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1744

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1532

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\WYMHWS64.txt
Filesize
603B

MD5
91aaf184719c335e96c9858c6337f893

SHA1
c23226bc7df724c0ab93e23c9bb9a2b43e5aab3e

SHA256
767e92aa1a3f23bfd31f3a6e707247a5a515daf353e64fe9ab9a8e05ce7d14eb

SHA512
30d83dc32ff05e144f346cb324fa4ff9a9e63d07b35b5e1707f28bd0868488562ecf4038341baeaf5898ef4f70d661ba053274d459b63326f870a5b0fec0c525

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

MD5
b349f56a6b1cea95b2bed2b46edcca67

SHA1
98a2cbf78a36fe927eabf59c0d195593b0c43a50

SHA256
56e71fdf6270f50dc6405e83c95a60ae8a5f4e455ed2f8d0c693807858c4eb06

SHA512
7f6e3497a026d5e5450099799661629166887ae0789b21b4a29647648ae5d7403b068c292ec2bd7840db6132cfe4ac1ff7e71f2c4ce4dc98b18afc792722ea77

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

MD5
05a74cd36a44402c8d283f4f399fd43b

SHA1
b12b00b369da3c714f4811f40272386889202328

SHA256
711b50372ac3db4784d2f703c5feda7bebb48ed20ab9843ba54544e932b80f4c

SHA512
ed87555215019f5c666d8ff69d3fd5eb9c237b4f6b0480c1c8fc45b255b1a760f589eda3a57044d4c101888fa2347cb77e8646053c8069e44a8c49648fc9bb00

Download Submit
memory/1564-54-0x0000000000000000-mapping.dmp

Download
memory/1564-55-0x0000000075681000-0x0000000075683000-memory.dmp

Filesize
8KB

Download
memory/1564-56-0x0000000074BF0000-0x0000000074C22000-memory.dmp

Filesize
200KB

Download
memory/1564-58-0x0000000074C30000-0x0000000074C62000-memory.dmp

Filesize
200KB

Download
memory/1564-59-0x0000000074BF0000-0x0000000074C22000-memory.dmp

Filesize
200KB

Download
memory/1564-61-0x0000000074C30000-0x0000000074C3F000-memory.dmp

Filesize
60KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads