78f4dd4b0e0bff6009f56a8b97332f600cec39e3c1d0e1cac6c7ee47a4bb9201

General

Target

LegionLocker4.1.exe
Size

6.1MB
MD5

04df8dd30da8b5853f48cc1ac9b695a8
SHA1

4c02262c2fea0e99277a99dcbe28a9c370b87c39
SHA256

78f4dd4b0e0bff6009f56a8b97332f600cec39e3c1d0e1cac6c7ee47a4bb9201
SHA512

3ad10c1512e316ff9d02bd5b4573298ae2f6fc8f9d56c66e2c5c4d95fe046e5b14b09e63cea9bca778560ce4b568ebdf70d66a0225b2eaf7e6cd3ba914583b7e

Score

10^/10

discovery evasion exploit persistence ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\LegionReadMe.txt

Ransom Note

Ooops! All your important files are encrypted! What happend to my computer? All your important files are encrypted. No one can help you to restore files without our special decryptor. Backups were either encrypted or deleted. Shadow copies also removed. If you want to restore some of your files for free write to email (contact is below) and attach 2-3 encrypted files. You will receive decrypted samples. To decrypt other files you have to pay $50. How do i pay? Payment is accepted in Bitcoin only. Please check the current price of Bitcoin and buy some Bitcoins. And send the correct amount to the address specified at the bottom of the sheet. Contact: 1.Download Tor browser (https://www.torproject.org/) 2.Create account on mail2tor (http://mail2tor2zyjdctd.onion/) 3.Write email to us ([email protected]) In case of no anwser in 72 hours write us to this email: [email protected] What if i already paid? Send your Bitcoin wallet ID to e-mail provided above. Attention! 1.Do not modify encrypted files. 2.Do not try decrypt your data using third party software, it may cause pernament data loss. Our Bitcoin address: 131fjhrB4wH8j6adZXudp1Wn23pR33tpAh

Emails

[email protected]

Wallets

131fjhrB4wH8j6adZXudp1Wn23pR33tpAh

URLs

http://mail2tor2zyjdctd.onion/

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs
persistence

Winlogon Helper DLL
T1004

Modify Registry
T1112

Processes:

LegionLocker4.1.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "empty" LegionLocker4.1.exe
Disables Task Manager via registry modification
evasion

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "empty"	LegionLocker4.1.exe

Modifies extensions of user files 6 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

LegionLocker4.1.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\StopBackup.png => C:\Users\Admin\Pictures\StopBackup.png.82uqjb1k5wya30pbb1nisyr68himefklnyhfdsfdrt8sbaxd2ju0	LegionLocker4.1.exe
File renamed	C:\Users\Admin\Pictures\UnlockEdit.crw => C:\Users\Admin\Pictures\UnlockEdit.crw.82uqjb1k5wya30pbb1nisyr68himefklnyhfdsfdrt8sbaxd2ju0	LegionLocker4.1.exe
File renamed	C:\Users\Admin\Pictures\UseUndo.png => C:\Users\Admin\Pictures\UseUndo.png.82uqjb1k5wya30pbb1nisyr68himefklnyhfdsfdrt8sbaxd2ju0	LegionLocker4.1.exe
File renamed	C:\Users\Admin\Pictures\CompleteSelect.png => C:\Users\Admin\Pictures\CompleteSelect.png.82uqjb1k5wya30pbb1nisyr68himefklnyhfdsfdrt8sbaxd2ju0	LegionLocker4.1.exe
File renamed	C:\Users\Admin\Pictures\MoveResolve.raw => C:\Users\Admin\Pictures\MoveResolve.raw.82uqjb1k5wya30pbb1nisyr68himefklnyhfdsfdrt8sbaxd2ju0	LegionLocker4.1.exe
File renamed	C:\Users\Admin\Pictures\RevokeInitialize.png => C:\Users\Admin\Pictures\RevokeInitialize.png.82uqjb1k5wya30pbb1nisyr68himefklnyhfdsfdrt8sbaxd2ju0	LegionLocker4.1.exe

Possible privilege escalation attempt 8 IoCs
exploit

Processes:

takeown.exeicacls.exetakeown.exeicacls.exetakeown.exeicacls.exetakeown.exeicacls.exe

pid process

1088 takeown.exe
1416 icacls.exe
2236 takeown.exe
3796 icacls.exe
2368 takeown.exe
2696 icacls.exe
3888 takeown.exe
188 icacls.exe
Modifies file permissions 1 TTPs 8 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exetakeown.exeicacls.exetakeown.exeicacls.exetakeown.exeicacls.exetakeown.exe

pid process

2696 icacls.exe
3888 takeown.exe
188 icacls.exe
1088 takeown.exe
1416 icacls.exe
2236 takeown.exe
3796 icacls.exe
2368 takeown.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

pid	process
1088	takeown.exe
1416	icacls.exe
2236	takeown.exe
3796	icacls.exe
2368	takeown.exe
2696	icacls.exe
3888	takeown.exe
188	icacls.exe

pid	process
2696	icacls.exe
3888	takeown.exe
188	icacls.exe
1088	takeown.exe
1416	icacls.exe
2236	takeown.exe
3796	icacls.exe
2368	takeown.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

LegionLocker4.1.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wp.bmp"	LegionLocker4.1.exe

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

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

LegionLocker4.1.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings LegionLocker4.1.exe
Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

2208 NOTEPAD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings	LegionLocker4.1.exe

pid	process
2208	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

LegionLocker4.1.exe

pid	process
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe
580	LegionLocker4.1.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

LegionLocker4.1.exetakeown.exetakeown.exetakeown.exetakeown.exe

description	pid	process
Token: SeDebugPrivilege	580	LegionLocker4.1.exe
Token: SeDebugPrivilege	580	LegionLocker4.1.exe
Token: SeTakeOwnershipPrivilege	2368	takeown.exe
Token: SeTakeOwnershipPrivilege	3888	takeown.exe
Token: SeTakeOwnershipPrivilege	1088	takeown.exe
Token: SeTakeOwnershipPrivilege	2236	takeown.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

LegionLocker4.1.execmd.execmd.exe

description	pid	process	target process
PID 580 wrote to memory of 1920	580	LegionLocker4.1.exe	cmd.exe
PID 580 wrote to memory of 1920	580	LegionLocker4.1.exe	cmd.exe
PID 1920 wrote to memory of 2368	1920	cmd.exe	takeown.exe
PID 1920 wrote to memory of 2368	1920	cmd.exe	takeown.exe
PID 1920 wrote to memory of 2696	1920	cmd.exe	icacls.exe
PID 1920 wrote to memory of 2696	1920	cmd.exe	icacls.exe
PID 1920 wrote to memory of 3888	1920	cmd.exe	takeown.exe
PID 1920 wrote to memory of 3888	1920	cmd.exe	takeown.exe
PID 1920 wrote to memory of 188	1920	cmd.exe	icacls.exe
PID 1920 wrote to memory of 188	1920	cmd.exe	icacls.exe
PID 1920 wrote to memory of 1088	1920	cmd.exe	takeown.exe
PID 1920 wrote to memory of 1088	1920	cmd.exe	takeown.exe
PID 1920 wrote to memory of 1416	1920	cmd.exe	icacls.exe
PID 1920 wrote to memory of 1416	1920	cmd.exe	icacls.exe
PID 1920 wrote to memory of 2236	1920	cmd.exe	takeown.exe
PID 1920 wrote to memory of 2236	1920	cmd.exe	takeown.exe
PID 1920 wrote to memory of 3796	1920	cmd.exe	icacls.exe
PID 1920 wrote to memory of 3796	1920	cmd.exe	icacls.exe
PID 1920 wrote to memory of 4060	1920	cmd.exe	attrib.exe
PID 1920 wrote to memory of 4060	1920	cmd.exe	attrib.exe
PID 580 wrote to memory of 1224	580	LegionLocker4.1.exe	cmd.exe
PID 580 wrote to memory of 1224	580	LegionLocker4.1.exe	cmd.exe
PID 1224 wrote to memory of 2728	1224	cmd.exe	rundll32.exe
PID 1224 wrote to memory of 2728	1224	cmd.exe	rundll32.exe
PID 580 wrote to memory of 2208	580	LegionLocker4.1.exe	NOTEPAD.EXE
PID 580 wrote to memory of 2208	580	LegionLocker4.1.exe	NOTEPAD.EXE

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4060 attrib.exe

pid	process
4060	attrib.exe

C:\Users\Admin\AppData\Local\Temp\LegionLocker4.1.exe
"C:\Users\Admin\AppData\Local\Temp\LegionLocker4.1.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:580
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32 && icacls C:\Windows\System32 /grant %username%:F && takeown /f C:\Windows\System32\drivers && icacls C:\Windows\System32\drivers /grant %username%:F && takeown /f C:\Windows\System32\LogonUI.exe && icacls C:\Windows\System32\LogonUI.exe /grant %username%:F && takeown /f C:\bootmgr && icacls C:\bootmgr /grant %username%:F && attrib -s -r -h C:\bootmgr && del C:\bootmgr && Exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1920
- - C:\Windows\system32\takeown.exe
    takeown /f C:\Windows\System32
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:2368
- - C:\Windows\system32\icacls.exe
    icacls C:\Windows\System32 /grant Admin:F
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:2696
- - C:\Windows\system32\takeown.exe
    takeown /f C:\Windows\System32\drivers
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:3888
- - C:\Windows\system32\icacls.exe
    icacls C:\Windows\System32\drivers /grant Admin:F
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:188
- - C:\Windows\system32\takeown.exe
    takeown /f C:\Windows\System32\LogonUI.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:1088
- - C:\Windows\system32\icacls.exe
    icacls C:\Windows\System32\LogonUI.exe /grant Admin:F
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1416
- - C:\Windows\system32\takeown.exe
    takeown /f C:\bootmgr
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:2236
- - C:\Windows\system32\icacls.exe
    icacls C:\bootmgr /grant Admin:F
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3796
- - C:\Windows\system32\attrib.exe
    attrib -s -r -h C:\bootmgr
    3⤵
    - Views/modifies file attributes
    PID:4060
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /k rundll32 user32.dll,UpdatePerUserSystemParameters && Exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1224
- - C:\Windows\system32\rundll32.exe
    rundll32 user32.dll,UpdatePerUserSystemParameters
    3⤵
    PID:2728
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\LegionReadMe.txt
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:2208

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4064

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

1

T1222

Hidden Files and Directories

Modify Registry

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Defacement

1

T1491

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Downloads

C:\Users\Admin\AppData\Local\Temp\LegionReadMe.txt

MD5
7db09a04d53ec49b19596d7836ac2286

SHA1
f92b734a6fd58d4a729d14f32bd69d588d03fb70

SHA256
eb07471b556a3a18b04c9f14d98f0d8345f6a249a74eea2148af19b50c97c5e7

SHA512
fc597891e55cfd69aaf709d20f89c088c6e4632a0f1b3286aaee2d22f98a7f01aaff1f8ec2660086f3434a02d4ea9fa0a5df60eac95abe9be56be8aee6d92897

Download Submit
memory/188-121-0x0000000000000000-mapping.dmp

Download
memory/580-114-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/580-116-0x000000001B5E0000-0x000000001B5E2000-memory.dmp

Filesize
8KB

Download
memory/580-132-0x000000001B5E4000-0x000000001B5E6000-memory.dmp

Filesize
8KB

Download
memory/580-131-0x000000001B5E2000-0x000000001B5E4000-memory.dmp

Filesize
8KB

Download
memory/1088-122-0x0000000000000000-mapping.dmp

Download
memory/1224-127-0x0000000000000000-mapping.dmp

Download
memory/1416-123-0x0000000000000000-mapping.dmp

Download
memory/1920-117-0x0000000000000000-mapping.dmp

Download
memory/2208-129-0x0000000000000000-mapping.dmp

Download
memory/2236-124-0x0000000000000000-mapping.dmp

Download
memory/2368-118-0x0000000000000000-mapping.dmp

Download
memory/2696-119-0x0000000000000000-mapping.dmp

Download
memory/2728-128-0x0000000000000000-mapping.dmp

Download
memory/3796-125-0x0000000000000000-mapping.dmp

Download
memory/3888-120-0x0000000000000000-mapping.dmp

Download
memory/4060-126-0x0000000000000000-mapping.dmp

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads