locky | 21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6

General

Target

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe
Size

372KB
MD5

e3b3e285390c0e2f7d04bd040bec790d
SHA1

dbee71535e9f1fb23b3f01e25989d22d51237e68
SHA256

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6
SHA512

6156a6b0ff4f41c823cba68a4596676e357ceb5b8c0848c2828a72321dbc2a731d9ae8f1a417fe27aef7de0080001ad3f77b3809b64a93c610ae99f95b35f5be

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

Modifies extensions of user files 1 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

description	ioc	process
File opened for modification	\??\c:\Users\Admin\Pictures\LockMount.tiff	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\DesktopOSIRIS.bmp"	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.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:

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Control Panel\Desktop\WallpaperStyle = "0"	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Control Panel\Desktop\TileWallpaper = "0"	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

Modifies Internet Explorer settings 1 TTPs 33 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000007647cecb75a30445a6fd9fb68eba5427000000000200000000001066000000010000200000003a36e7f09ba7b533cd52b403c75f22fe947734462fa4ebc1aaf3cdebac88c3aa000000000e8000000002000020000000f3db1576833176103218f5745343f902b479db403c9913f32c1ecba40ad7212c20000000a90bc17f58f469986aaaecfd9737c7075a4572db392bcfcb566c50c7835d6881400000004f3a4ecbde5db9d3661f428c32a8e9403b6c922871ac32b3d3a8db5410bc982e14c3ba8fb0c270420aa560dafb5244fe566372745bce3b19af3854301884631b	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{5315E401-05D2-11ED-94A4-CE76330CF053} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = b0c55829df99d801	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000007647cecb75a30445a6fd9fb68eba542700000000020000000000106600000001000020000000e00be9f45ac9323cb0615607ec2874c18ffd927c05b13cdba5f13c83d3b878ff000000000e8000000002000020000000caf8d67e9fdda0c9cea58c425c8facadec8021bb0d1d8ed8ae2760f7e36adb17900000000905bbdd33e4397eed1a761bde269275015bc8cafcc4659dbcad165240fc11f94b741f627d76d1205a592c20c9cdf7479dd0d21773b57862cb9009fdc6e84c5d47a2ecf3a788b1915dbd34c386498f18a802ef8c7b8ed9121240d51c1803d727ba3176b5e2471a5aa55c6794aa48b8510c1039dfebed3e4ed0c64d4b3214d70331676cc88d0ddf5ab159453f421fc84440000000eb92423ca56a97adea5553f9b2e7009baf3ed8b5818f355af178faf834437a9d0093ab4214a25836e09af439df0aea7d78a1255bbecac1913bdda5bf75bc108d	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

pid process

1808 21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

pid	process
1808	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

AUDIODG.EXE

description	pid	process
Token: 33	1588	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1588	AUDIODG.EXE
Token: 33	1588	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1588	AUDIODG.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

iexplore.exeDllHost.exe

pid process

1624 iexplore.exe
1408 DllHost.exe
1408 DllHost.exe
1408 DllHost.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1624 iexplore.exe
1624 iexplore.exe
824 IEXPLORE.EXE
824 IEXPLORE.EXE
824 IEXPLORE.EXE
824 IEXPLORE.EXE

pid	process
1624	iexplore.exe
1408	DllHost.exe
1408	DllHost.exe
1408	DllHost.exe

pid	process
1624	iexplore.exe
1624	iexplore.exe
824	IEXPLORE.EXE
824	IEXPLORE.EXE
824	IEXPLORE.EXE
824	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exeiexplore.exe

description	pid	process	target process
PID 1808 wrote to memory of 1624	1808	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	iexplore.exe
PID 1808 wrote to memory of 1624	1808	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	iexplore.exe
PID 1808 wrote to memory of 1624	1808	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	iexplore.exe
PID 1808 wrote to memory of 1624	1808	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	iexplore.exe
PID 1624 wrote to memory of 824	1624	iexplore.exe	IEXPLORE.EXE
PID 1624 wrote to memory of 824	1624	iexplore.exe	IEXPLORE.EXE
PID 1624 wrote to memory of 824	1624	iexplore.exe	IEXPLORE.EXE
PID 1624 wrote to memory of 824	1624	iexplore.exe	IEXPLORE.EXE
PID 1808 wrote to memory of 1804	1808	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	cmd.exe
PID 1808 wrote to memory of 1804	1808	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	cmd.exe
PID 1808 wrote to memory of 1804	1808	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	cmd.exe
PID 1808 wrote to memory of 1804	1808	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe
"C:\Users\Admin\AppData\Local\Temp\21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe"
1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1808

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\DesktopOSIRIS.htm
2⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1624

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1624 CREDAT:275457 /prefetch:2
3⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:824

C:\Windows\SysWOW64\cmd.exe
cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe"
2⤵
PID:1804

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:2000

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x514
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1588

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1408

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
1⤵
PID:1492

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

MD5
c39bee4c1119b0180f71dafc0c64e22e

SHA1
e0c55767057f91e760c92a66d2133cf141751e26

SHA256
fadad59a135de69bcbe225372a473ca1c014f477a910ea84f23e966dc1707fc5

SHA512
572978bab41419628909d2a87ff10ad4a67ccbc8700027d2ac2d31978385c9535e2bbb0102d89c071f9ddb70ba6d38215906d6935b4853b5c0039f7bb2fa62d2

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

MD5
b761e70b02f7639e662788f0a7915e0b

SHA1
f3e04d866b4c48018974561e91a2157f43eb50af

SHA256
04dcf106c3c374a0fb3add8bc9dd9f7b11343a4c04d11488ffe05a9ef5e9a138

SHA512
9a0f23d0999b0e067e0f9f3bf8e4e33a386a2f3ba23ad749902273d87debef4197dc17e121a7fa3fa62063e4dec866e92cb7b11e499dc6c09035895eabe81196

Download Submit
memory/1492-65-0x0000000072351000-0x0000000072353000-memory.dmp

Filesize
8KB

Download
memory/1804-61-0x0000000000000000-mapping.dmp

Download
memory/1808-55-0x0000000075021000-0x0000000075023000-memory.dmp

Filesize
8KB

Download
memory/1808-56-0x0000000003040000-0x0000000003C8A000-memory.dmp

Filesize
12.3MB

Download
memory/1808-57-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1808-59-0x0000000003040000-0x0000000003C8A000-memory.dmp

Filesize
12.3MB

Download
memory/2000-54-0x000007FEFB961000-0x000007FEFB963000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads