locky | cfc9a840db2ea814739f220bdaa2edc18f2fdcb350a40646bdc144ea7b559b9f

General

Target

20161205_e4a80fe1dcf0f7e3a9cb5ebfd027c115.js
Size

13KB
MD5

cf7844b89cfa63d28152f4706ab1fc74
SHA1

ce46ff282bfe3162aec806b92672e0299aa09588
SHA256

cfc9a840db2ea814739f220bdaa2edc18f2fdcb350a40646bdc144ea7b559b9f
SHA512

58672ec8b6440321d4394e838e911927e2c03217a6ff39357f4c85d3428aef0ed4868e4848d6db3fc27d196d553aaee836a961f76ab4e669f9453e81f631b469

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 9 IoCs

flow	pid	Process
5	1724	wscript.exe
7	1724	wscript.exe
9	1724	wscript.exe
11	1724	wscript.exe
12	824	rundll32.exe
13	824	rundll32.exe
14	824	rundll32.exe
15	824	rundll32.exe
16	824	rundll32.exe

Loads dropped DLL 1 IoCs

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

Modifies Internet Explorer settings 1 TTPs 23 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
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\Toolbar\WebBrowser	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{CFB20841-47A6-11EC-A418-4A11B852DD4F} = "0"	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\BrowserEmulation\LowMic	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\Zoom	iexplore.exe
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
Set value (data)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	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\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	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\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	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\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	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\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
908	iexplore.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
908	iexplore.exe
908	iexplore.exe
1752	IEXPLORE.EXE
1752	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 828	1724	wscript.exe	30
PID 1724 wrote to memory of 828	1724	wscript.exe	30
PID 1724 wrote to memory of 828	1724	wscript.exe	30
PID 828 wrote to memory of 824	828	rundll32.exe	31
PID 828 wrote to memory of 824	828	rundll32.exe	31
PID 828 wrote to memory of 824	828	rundll32.exe	31
PID 828 wrote to memory of 824	828	rundll32.exe	31
PID 828 wrote to memory of 824	828	rundll32.exe	31
PID 828 wrote to memory of 824	828	rundll32.exe	31
PID 828 wrote to memory of 824	828	rundll32.exe	31
PID 824 wrote to memory of 908	824	rundll32.exe	35
PID 824 wrote to memory of 908	824	rundll32.exe	35
PID 824 wrote to memory of 908	824	rundll32.exe	35
PID 824 wrote to memory of 908	824	rundll32.exe	35
PID 908 wrote to memory of 1752	908	iexplore.exe	37
PID 908 wrote to memory of 1752	908	iexplore.exe	37
PID 908 wrote to memory of 1752	908	iexplore.exe	37
PID 908 wrote to memory of 1752	908	iexplore.exe	37

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\20161205_e4a80fe1dcf0f7e3a9cb5ebfd027c115.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\TL1G5Z~1.ZK,TOxNKCZjUHCfTf9D
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:828
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\TL1G5Z~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:824
  - - 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:908
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:908 CREDAT:275457 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1752

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
PID:1828

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/824-58-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/824-60-0x0000000075580000-0x00000000755BA000-memory.dmp

Filesize
232KB

Download
memory/824-62-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download
memory/1828-65-0x0000000000160000-0x0000000000162000-memory.dmp

Filesize
8KB

Download
memory/1828-67-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads