locky | 8397e12e39e30f5015e3bd41670ac9d95718e53c4a3def07ee820b199cbdd137

Analysis

max time kernel
140s
max time network
132s
platform
windows7_x64
resource
win7-en-20211104
submitted
18/11/2021, 13:57

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General

Target

20161205_6d10b817f6dd8b69c88448264e58ed5e.js
Size

12KB
MD5

6d7b2f9d92a519b7ff3ba1afc795d98e
SHA1

3b975a219d56ec28d4cc6c0b89a4227639925630
SHA256

8397e12e39e30f5015e3bd41670ac9d95718e53c4a3def07ee820b199cbdd137
SHA512

a184b457b888033e68119f21cf5fd4a774df3d3ea65c924b408f571f9f8bbfb3251df2f12e209e68ac9e200a173e16667c94b26fce94602c7e56c79d00c18568

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
5	808	wscript.exe
6	1976	rundll32.exe
7	1976	rundll32.exe
8	1976	rundll32.exe
9	1976	rundll32.exe
10	1976	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1976	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 31 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\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = e0fc9a6184dcd701	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\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\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\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{8BD3EF41-4877-11EC-8E38-EEA7418AF872} = "0"	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\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
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 (data)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	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\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	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\Main	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000bb601b266500a1439caac4cd216a44ab00000000020000000000106600000001000020000000b568a907fbd4695738ce60f0bb94556b03d9a735b6139c8f3f596906119c7204000000000e80000000020000200000004f9bdea2860a50beba157c6dca283d1d85ef81bceefe9205345b85d8af9085c320000000b527a173ef3c89ee9250957b0518bbaca0e12f58a63c20a49628f4de41bda3684000000050b84273b03154a3ade2ff4040eb88f6f547fbd0eaa5a7077a9d8c3fba9382e3c716a96b7c8b282ac4648511b020e28a3eb09b793cb2fdf235891c5de56d4112	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\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	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\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
940	iexplore.exe
1600	DllHost.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
940	iexplore.exe
940	iexplore.exe
1296	IEXPLORE.EXE
1296	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 808 wrote to memory of 924	808	wscript.exe	30
PID 808 wrote to memory of 924	808	wscript.exe	30
PID 808 wrote to memory of 924	808	wscript.exe	30
PID 924 wrote to memory of 1976	924	rundll32.exe	31
PID 924 wrote to memory of 1976	924	rundll32.exe	31
PID 924 wrote to memory of 1976	924	rundll32.exe	31
PID 924 wrote to memory of 1976	924	rundll32.exe	31
PID 924 wrote to memory of 1976	924	rundll32.exe	31
PID 924 wrote to memory of 1976	924	rundll32.exe	31
PID 924 wrote to memory of 1976	924	rundll32.exe	31
PID 1976 wrote to memory of 940	1976	rundll32.exe	33
PID 1976 wrote to memory of 940	1976	rundll32.exe	33
PID 1976 wrote to memory of 940	1976	rundll32.exe	33
PID 1976 wrote to memory of 940	1976	rundll32.exe	33
PID 940 wrote to memory of 1296	940	iexplore.exe	35
PID 940 wrote to memory of 1296	940	iexplore.exe	35
PID 940 wrote to memory of 1296	940	iexplore.exe	35
PID 940 wrote to memory of 1296	940	iexplore.exe	35

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\20161205_6d10b817f6dd8b69c88448264e58ed5e.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:808
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\DD6EZW~1.ZK,TOxNKCZjUHCfTf9D
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:924
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\DD6EZW~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:1976
  - - 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:940
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:940 CREDAT:275457 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1296

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1600

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

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Downloads

memory/940-64-0x000007FEFC291000-0x000007FEFC293000-memory.dmp

Filesize
8KB

Download
memory/1600-69-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

Download
memory/1600-66-0x00000000000C0000-0x00000000000C2000-memory.dmp

Filesize
8KB

Download
memory/1976-58-0x00000000765D1000-0x00000000765D3000-memory.dmp

Filesize
8KB

Download
memory/1976-62-0x0000000000650000-0x0000000000651000-memory.dmp

Filesize
4KB

Download
memory/1976-60-0x0000000075260000-0x000000007529A000-memory.dmp

Filesize
232KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads