locky | 423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46

Analysis

max time kernel
137s
max time network
104s
platform
windows7_x64
resource
win7-20220414-en
submitted
08-07-2022 03:12

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General

Target

423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe
Size

756KB
MD5

a4872e4fe84e5adcc49ba4c641547821
SHA1

38fbc212ba2fde3dc0d9f3e9fa27df1411604398
SHA256

423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46
SHA512

49ac155e08532ee109d62b8105b14a94cd00b29999e4d49356f72157bea87dd0ee4b1b7d059cd6d7cc08711b2db83bde20824ada64e7b4acb611465d32358ca4

Score

10^/10

locky ransomware

Malware Config

Signatures

Locky
Ransomware strain released in 2016, with advanced features like anti-analysis.
ransomware locky
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Deletes itself 1 IoCs

pid	Process
1636	cmd.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-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\asasin.bmp"	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Interacts with shadow copies 2 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
1264	vssadmin.exe

Modifies Control Panel 2 IoCs

evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\Desktop\WallpaperStyle = "0"	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\Desktop\TileWallpaper = "0"	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{9625B4B1-FEA1-11EC-AFA4-F2A7A8855ABA} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000358f16e0538341458b70f68dad1eafd4000000000200000000001066000000010000200000006d72c7b01635d8bd3035a0512531ff246a886c97f0372982c3fecd3dbc4ed5d1000000000e8000000002000020000000c1b5831744ca7f031c034fc454ccb2fed52110540ecdc1ccbc257dbf59db68ab20000000bc3a0132df885b602a2c44bbb372dc8657b045eb12434918107b9517cd701e3a40000000a4e693d1cd38a0dcfddbcd3c26dcb31d5518b760665c727373ce8600ede8ba36c679306b96cc997f16688d224d2303f9dc6eba61bbdf7eeb77a324c54be5469c	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 404ede6dae92d801	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe
Token: SeTakeOwnershipPrivilege	1968	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe
Token: SeBackupPrivilege	1968	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe
Token: SeRestorePrivilege	1968	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe
Token: SeBackupPrivilege	1004	vssvc.exe
Token: SeRestorePrivilege	1004	vssvc.exe
Token: SeAuditPrivilege	1004	vssvc.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1108	iexplore.exe
1996	DllHost.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1108	iexplore.exe
1108	iexplore.exe
1144	IEXPLORE.EXE
1144	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 268 wrote to memory of 1264	268	taskeng.exe	31
PID 268 wrote to memory of 1264	268	taskeng.exe	31
PID 268 wrote to memory of 1264	268	taskeng.exe	31
PID 1968 wrote to memory of 1108	1968	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe	36
PID 1968 wrote to memory of 1108	1968	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe	36
PID 1968 wrote to memory of 1108	1968	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe	36
PID 1968 wrote to memory of 1108	1968	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe	36
PID 1968 wrote to memory of 1636	1968	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe	39
PID 1968 wrote to memory of 1636	1968	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe	39
PID 1968 wrote to memory of 1636	1968	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe	39
PID 1968 wrote to memory of 1636	1968	423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe	39
PID 1108 wrote to memory of 1144	1108	iexplore.exe	41
PID 1108 wrote to memory of 1144	1108	iexplore.exe	41
PID 1108 wrote to memory of 1144	1108	iexplore.exe	41
PID 1108 wrote to memory of 1144	1108	iexplore.exe	41

C:\Users\Admin\AppData\Local\Temp\423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe
"C:\Users\Admin\AppData\Local\Temp\423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe"
1⤵
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1968
- 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:1108
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1108 CREDAT:275457 /prefetch:2
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:1144
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\423dc1aaaed311349f9932a643a032d18f0589b97275b501a7a7f6955f5aac46.exe"
  2⤵
  - Deletes itself
  PID:1636

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1004

C:\Windows\system32\taskeng.exe
taskeng.exe {0EE1D346-F158-441F-83B8-0D75E9AA8711} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:268
- C:\Windows\system32\vssadmin.exe
  C:\Windows\system32\vssadmin.exe Delete Shadows /Quiet /All
  2⤵
  - Interacts with shadow copies
  PID:1264

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1996

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

T1107

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

Inhibit System Recovery

T1490

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Downloads

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

Filesize
3.4MB

MD5
362de796184678d6c9cc622b37c3bb79

SHA1
a5e88c90913f6d3b20fa6625e5963f4ec2ad93b3

SHA256
3528e486463ebf132e9252877d73bf7f1a050cc2315b4a56d392ea5e98d0f8a3

SHA512
cd14dedea77ef31d9f8f775846caf8a554c289527ea688bf2f800c7cb4ac9a10235ec7c483078eb3046a471d0d08ccae69a8e741fa9e232315ed6715134c59b2

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

Filesize
8KB

MD5
29208885627fc675d1675763b76bf2d4

SHA1
444b20d443df7068a189e3cde2ebe6a259edab81

SHA256
6e8c46e055ed76555d185b350444b43933c42a3dd7432a1a86ad09482aede4e5

SHA512
0b2f7324e5c14b57091af10701d740f7f988b7f06bf7adf3f062ffb148a7e725d5a491a944013d08ef5674d1c5c0cffed9a912d2f584d40fc9aeaef4d5b5635e

Download Submit
memory/1968-54-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download
memory/1968-55-0x00000000011F0000-0x00000000012B1000-memory.dmp

Filesize
772KB

Download
memory/1968-58-0x0000000000BA0000-0x0000000000C29000-memory.dmp

Filesize
548KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads