locky_lukitus | 40ba07f9761a6565642d7aae57f2f4622030e33fe80eb46a543446dcb8e3f1ca

Analysis

max time kernel
156s
max time network
148s
platform
windows7_x64
resource
win7v20201028
submitted
15-03-2021 09:49

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General

Target

2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe
Size

657KB
MD5

8009e4433aad21916a7761d374ee2be9
SHA1

e0538c4bb3d0310f827799c98707b681d1f91b45
SHA256

2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea
SHA512

404f98fb57d0842aa43d5a113a395ff1d5d963ae60bce81d4dc22f3f0b382a7ba06703b0d7404a240e5edf5f1f75f8bc9b980a966bd29b9e432cd09cb1507071

Score

10^/10

locky_lukitus ransomware

Malware Config

Signatures

Locky (Lukitus variant)
Variant of the Locky ransomware seen in the wild since late 2017.
ransomware locky_lukitus

Modifies extensions of user files 1 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe

description	ioc	Process
File opened for modification	\??\c:\Users\Admin\Pictures\UnregisterDeny.tiff	2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid	Process
892	cmd.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\lukitus.bmp"	2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.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:

2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Control Panel\Desktop\WallpaperStyle = "0"	2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Control Panel\Desktop\TileWallpaper = "0"	2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe

Modifies Internet Explorer settings 1 TTPs 23 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{05821161-857C-11EB-A476-76BCB60B883E} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid	Process
1164	iexplore.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid	Process
1164	iexplore.exe
1164	iexplore.exe
1016	IEXPLORE.EXE
1016	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exeiexplore.exe

description	pid	Process	procid_target
PID 1076 wrote to memory of 1164	1076	2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe	31
PID 1076 wrote to memory of 1164	1076	2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe	31
PID 1076 wrote to memory of 1164	1076	2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe	31
PID 1076 wrote to memory of 1164	1076	2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe	31
PID 1164 wrote to memory of 1016	1164	iexplore.exe	33
PID 1164 wrote to memory of 1016	1164	iexplore.exe	33
PID 1164 wrote to memory of 1016	1164	iexplore.exe	33
PID 1164 wrote to memory of 1016	1164	iexplore.exe	33
PID 1076 wrote to memory of 892	1076	2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe	34
PID 1076 wrote to memory of 892	1076	2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe	34
PID 1076 wrote to memory of 892	1076	2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe	34
PID 1076 wrote to memory of 892	1076	2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe	34

C:\Users\Admin\AppData\Local\Temp\2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe
"C:\Users\Admin\AppData\Local\Temp\2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe"
1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Suspicious use of WriteProcessMemory
PID:1076
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\lukitus.htm
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1164
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1164 CREDAT:275457 /prefetch:2
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:1016
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\2deaa0ec7445c26f1442f860eb32f4fcda2d501699d09a94c26035d6185803ea.exe"
  2⤵
  - Deletes itself
  PID:892

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
PID:364

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

Replay Monitor

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Downloads

C:\Users\Admin\Desktop\lukitus.htm

MD5
f1f66d26bfe5938cc51940440bf1f8fe

SHA1
8c75aa0d4f206951605521e26722ba1af00a4581

SHA256
1ae8dab2540e34524ffb90d0a22a1b31ad9a026a673038d60aed61b7ab3cf0b5

SHA512
2ed3c22e5fe47e41caa43ed8f306b091e235bc7e41a3405fd7acd8ae08ee79ee3c2e623f4679166801a75241a066c02b228fbd7b1a46056a50633bf6eb2019d2

Download Submit
memory/364-10-0x00000000000B0000-0x00000000000B2000-memory.dmp

Filesize
8KB

Download
memory/364-12-0x00000000001E0000-0x00000000001E1000-memory.dmp

Filesize
4KB

Download
memory/892-11-0x0000000000000000-mapping.dmp

Download
memory/1016-8-0x0000000000000000-mapping.dmp

Download
memory/1076-2-0x0000000075D61000-0x0000000075D63000-memory.dmp

Filesize
8KB

Download
memory/1076-3-0x0000000000401000-0x0000000000478000-memory.dmp

Filesize
476KB

Download
memory/1076-4-0x00000000002C0000-0x00000000002C1000-memory.dmp

Filesize
4KB

Download
memory/1076-5-0x00000000002E0000-0x00000000002E1000-memory.dmp

Filesize
4KB

Download
memory/1164-7-0x0000000000000000-mapping.dmp

Download
memory/1472-6-0x000007FEF7900000-0x000007FEF7B7A000-memory.dmp

Filesize
2.5MB

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