locky | df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567

General

Target

df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe
Size

623KB
MD5

c24a08bfeb09c9842b8e6578d7b0b721
SHA1

937a77b8ad27217b346922cb5513458542e3d390
SHA256

df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567
SHA512

42717c37604b41fff2bae91a22037f0e2b1d3514a8305d672595930f331a6a998d1a88741585413977ee81cd59ab155faf19ae654d229dc0256e30d71b222799

Score

10^/10

locky persistence ransomware

Malware Config

Signatures

Locky
Ransomware strain released in 2016, with advanced features like anti-analysis.
ransomware locky

Modifies extensions of user files 2 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe

description	ioc	process
File opened for modification	\??\c:\Users\Admin\Pictures\ExportSearch.tiff	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe
File opened for modification	\??\c:\Users\Admin\Pictures\InstallUnregister.tiff	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1536 cmd.exe

pid	process
1536	cmd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\opt321 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe"	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\asasin.bmp"	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.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:

df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Control Panel\Desktop\WallpaperStyle = "0"	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Control Panel\Desktop\TileWallpaper = "0"	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{DEF6A681-F97F-11EC-AC59-4224C87335A1} = "0"	iexplore.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe

description	pid	process
Token: SeDebugPrivilege	2004	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe
Token: SeTakeOwnershipPrivilege	2004	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe
Token: SeBackupPrivilege	2004	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe
Token: SeRestorePrivilege	2004	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

iexplore.exeDllHost.exe

pid process

2012 iexplore.exe
1516 DllHost.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

2012 iexplore.exe
2012 iexplore.exe
556 IEXPLORE.EXE
556 IEXPLORE.EXE

pid	process
2012	iexplore.exe
1516	DllHost.exe

pid	process
2012	iexplore.exe
2012	iexplore.exe
556	IEXPLORE.EXE
556	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exeiexplore.exe

description	pid	process	target process
PID 2004 wrote to memory of 2012	2004	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe	iexplore.exe
PID 2004 wrote to memory of 2012	2004	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe	iexplore.exe
PID 2004 wrote to memory of 2012	2004	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe	iexplore.exe
PID 2004 wrote to memory of 2012	2004	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe	iexplore.exe
PID 2004 wrote to memory of 1536	2004	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe	cmd.exe
PID 2004 wrote to memory of 1536	2004	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe	cmd.exe
PID 2004 wrote to memory of 1536	2004	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe	cmd.exe
PID 2004 wrote to memory of 1536	2004	df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe	cmd.exe
PID 2012 wrote to memory of 556	2012	iexplore.exe	IEXPLORE.EXE
PID 2012 wrote to memory of 556	2012	iexplore.exe	IEXPLORE.EXE
PID 2012 wrote to memory of 556	2012	iexplore.exe	IEXPLORE.EXE
PID 2012 wrote to memory of 556	2012	iexplore.exe	IEXPLORE.EXE

C:\Users\Admin\AppData\Local\Temp\df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe
"C:\Users\Admin\AppData\Local\Temp\df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe"
1⤵
- Modifies extensions of user files
- Adds Run key to start application
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2004

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\asasin.htm
2⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2012

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2012 CREDAT:275457 /prefetch:2
3⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:556

C:\Windows\SysWOW64\cmd.exe
cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe"
2⤵
- Deletes itself
PID:1536

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1516

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1

T1491

Replay Monitor

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Downloads

C:\Users\Admin\Desktop\asasin.bmp

Filesize
3.5MB

MD5
dfe7ab73072614daa14f42edd9bf48e9

SHA1
66a52d869e59620da90525531bb2ff050ba850ce

SHA256
3c6c8ce0ac6302ee219bcadf7a67086349fdb20c5a8405938e2a5f6cba9a701a

SHA512
31a28accba9abddaf3bd6216ff5ae03061999f86549efb302d3160659db91d0e9800fec10bef98c51d2fd23915d8b0af1f65504726a6695b64319fbdece03ed1

Download Submit
C:\Users\Admin\Desktop\asasin.htm

Filesize
8KB

MD5
751552b4468b3896e00f6f475ca0c602

SHA1
258e79bf1918a326b87c6535231952ade2afd72e

SHA256
ba5fb21b3288c55428ac548e75c6ff9fdd35772a30a99bce1be24a78c6e0df4a

SHA512
3eae870e5309e58f42ab7f1f09d63d88ad01c941dd6e7f864e6d353c3fd863962198ca1b6e158e96a2291081dffb0c9f5f0c9332d6b03ea33e737b989651d4ea

Download Submit
memory/1536-61-0x0000000000000000-mapping.dmp

Download
memory/2004-54-0x0000000076191000-0x0000000076193000-memory.dmp

Filesize
8KB

Download
memory/2004-55-0x0000000000400000-0x0000000000489000-memory.dmp

Filesize
548KB

Download
memory/2004-56-0x0000000000400000-0x00000000004A2C94-memory.dmp

Filesize
651KB

Download
memory/2004-58-0x0000000000400000-0x00000000004A2C94-memory.dmp

Filesize
651KB

Download
memory/2004-59-0x0000000000400000-0x00000000004A2C94-memory.dmp

Filesize
651KB

Download
memory/2004-62-0x0000000000400000-0x00000000004A2C94-memory.dmp

Filesize
651KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads