locky | 10fc625dc1859a1f88b9cae2aae55e4268c027a65eff039d0266e855c75b6ca5

General

Target

20161205_0a3057963564d1fbe7c4c961ad8c2816.js
Size

13KB
MD5

874e785cda72eb99593ce097ab739b71
SHA1

a8b8d3ed05173b8a33d3f03d525ea440e593848c
SHA256

10fc625dc1859a1f88b9cae2aae55e4268c027a65eff039d0266e855c75b6ca5
SHA512

c984bfc1dc0ea684c466530bba8d8a83ad61da413e23cd6f2bd98301b5560c5f5acc6d7ced6c5035fd9954239a7a3ab8284120d8c07d568bb579eb454f398cab

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 Nemucod JS Downloader Aug 01 2017
suricata: ET MALWARE Nemucod JS Downloader Aug 01 2017
suricata

Blocklisted process makes network request 6 IoCs

flow	pid	Process
6	1864	wscript.exe
7	1984	rundll32.exe
10	1984	rundll32.exe
11	1984	rundll32.exe
12	1984	rundll32.exe
13	1984	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1984	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-1-5-21-103686315-404690609-2047157615-1000\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-1-5-21-103686315-404690609-2047157615-1000\Control Panel\Desktop\TileWallpaper = "0"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Control Panel\Desktop\WallpaperStyle = "0"	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{4ADCC881-47A7-11EC-A585-5ADDF1EB9C08} = "0"	iexplore.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
664	iexplore.exe
652	DllHost.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
664	iexplore.exe
664	iexplore.exe
1520	IEXPLORE.EXE
1520	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1864 wrote to memory of 1980	1864	wscript.exe	30
PID 1864 wrote to memory of 1980	1864	wscript.exe	30
PID 1864 wrote to memory of 1980	1864	wscript.exe	30
PID 1980 wrote to memory of 1984	1980	rundll32.exe	31
PID 1980 wrote to memory of 1984	1980	rundll32.exe	31
PID 1980 wrote to memory of 1984	1980	rundll32.exe	31
PID 1980 wrote to memory of 1984	1980	rundll32.exe	31
PID 1980 wrote to memory of 1984	1980	rundll32.exe	31
PID 1980 wrote to memory of 1984	1980	rundll32.exe	31
PID 1980 wrote to memory of 1984	1980	rundll32.exe	31
PID 1984 wrote to memory of 664	1984	rundll32.exe	34
PID 1984 wrote to memory of 664	1984	rundll32.exe	34
PID 1984 wrote to memory of 664	1984	rundll32.exe	34
PID 1984 wrote to memory of 664	1984	rundll32.exe	34
PID 664 wrote to memory of 1520	664	iexplore.exe	36
PID 664 wrote to memory of 1520	664	iexplore.exe	36
PID 664 wrote to memory of 1520	664	iexplore.exe	36
PID 664 wrote to memory of 1520	664	iexplore.exe	36

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\20161205_0a3057963564d1fbe7c4c961ad8c2816.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:1864
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\OUV6VD~1.ZK,TOxNKCZjUHCfTf9D
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1980
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\OUV6VD~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:1984
  - - 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:664
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:664 CREDAT:275457 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1520

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:652

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/652-66-0x0000000000170000-0x0000000000172000-memory.dmp

Filesize
8KB

Download
memory/652-67-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1984-58-0x0000000075A61000-0x0000000075A63000-memory.dmp

Filesize
8KB

Download
memory/1984-62-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/1984-60-0x0000000075020000-0x000000007505A000-memory.dmp

Filesize
232KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads