locky | a92fabe3ad5c2e51fe204e977772c935e3caeab6eb1c779a9258c7758eaff0c6

General

Target

20161205_d0a20f3ad3b7a2c399a9f9c8245dd76f.js
Size

13KB
MD5

f6dbcc215aaca6a41234b8f5c4e63102
SHA1

ba8aaa58fa4e526cb0b6ef75948c5f5c22345d3d
SHA256

a92fabe3ad5c2e51fe204e977772c935e3caeab6eb1c779a9258c7758eaff0c6
SHA512

46bd8ec361b7cd22b311b7c4413ec1146d6b5c7ab7c6d99792423d27bb1748c0c61e6dd3c6d856af96b3fbb53d7a2e5b0797b17cfe36c356c12bc81dd5605397

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 10 IoCs

flow	pid	Process
5	660	wscript.exe
7	660	wscript.exe
9	660	wscript.exe
12	660	wscript.exe
14	660	wscript.exe
15	1824	rundll32.exe
18	1824	rundll32.exe
19	1824	rundll32.exe
20	1824	rundll32.exe
21	1824	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1824	rundll32.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

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"	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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Control Panel\Desktop\WallpaperStyle = "0"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Control Panel\Desktop\TileWallpaper = "0"	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
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\InternetRegistry	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\Toolbar\WebBrowser	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 (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\Main	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\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{6EF9D281-4883-11EC-BFD7-6E82E447E8A6} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	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\PageSetup	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\Main\WindowsSearch	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\Main	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\Zoom	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\Main\WindowsSearch	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1056	iexplore.exe
1632	DllHost.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1056	iexplore.exe
1056	iexplore.exe
1720	IEXPLORE.EXE
1720	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 660 wrote to memory of 420	660	wscript.exe	30
PID 660 wrote to memory of 420	660	wscript.exe	30
PID 660 wrote to memory of 420	660	wscript.exe	30
PID 420 wrote to memory of 1824	420	rundll32.exe	31
PID 420 wrote to memory of 1824	420	rundll32.exe	31
PID 420 wrote to memory of 1824	420	rundll32.exe	31
PID 420 wrote to memory of 1824	420	rundll32.exe	31
PID 420 wrote to memory of 1824	420	rundll32.exe	31
PID 420 wrote to memory of 1824	420	rundll32.exe	31
PID 420 wrote to memory of 1824	420	rundll32.exe	31
PID 1824 wrote to memory of 1056	1824	rundll32.exe	34
PID 1824 wrote to memory of 1056	1824	rundll32.exe	34
PID 1824 wrote to memory of 1056	1824	rundll32.exe	34
PID 1824 wrote to memory of 1056	1824	rundll32.exe	34
PID 1056 wrote to memory of 1720	1056	iexplore.exe	36
PID 1056 wrote to memory of 1720	1056	iexplore.exe	36
PID 1056 wrote to memory of 1720	1056	iexplore.exe	36
PID 1056 wrote to memory of 1720	1056	iexplore.exe	36

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\20161205_d0a20f3ad3b7a2c399a9f9c8245dd76f.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:660
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\IBJJVA~1.ZK,TOxNKCZjUHCfTf9D
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:420
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\IBJJVA~1.ZK,TOxNKCZjUHCfTf9D
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    - Sets desktop wallpaper using registry
    - Modifies Control Panel
    - Suspicious use of WriteProcessMemory
    PID:1824
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\DesktopOSIRIS.htm
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1056
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1056 CREDAT:275457 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1720

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1632

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

memory/1632-67-0x0000000000330000-0x0000000000331000-memory.dmp

Filesize
4KB

Download
memory/1632-65-0x00000000001F0000-0x00000000001F2000-memory.dmp

Filesize
8KB

Download
memory/1824-58-0x00000000758C1000-0x00000000758C3000-memory.dmp

Filesize
8KB

Download
memory/1824-62-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download
memory/1824-60-0x00000000752B0000-0x00000000752EA000-memory.dmp

Filesize
232KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads