78f4dd4b0e0bff6009f56a8b97332f600cec39e3c1d0e1cac6c7ee47a4bb9201

Analysis

max time kernel
122s
max time network
126s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29-12-2023 21:51

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General

Target

04df8dd30da8b5853f48cc1ac9b695a8.exe
Size

6.1MB
MD5

04df8dd30da8b5853f48cc1ac9b695a8
SHA1

4c02262c2fea0e99277a99dcbe28a9c370b87c39
SHA256

78f4dd4b0e0bff6009f56a8b97332f600cec39e3c1d0e1cac6c7ee47a4bb9201
SHA512

3ad10c1512e316ff9d02bd5b4573298ae2f6fc8f9d56c66e2c5c4d95fe046e5b14b09e63cea9bca778560ce4b568ebdf70d66a0225b2eaf7e6cd3ba914583b7e
SSDEEP

3072:jnsbblTAByHNgb0nbYlwKsw962CpJid72gqV/6c4LNobbamucc3OD4iEDzyEaE0u:jnsq7hQplBdJ7bP4L8rVE

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

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "empty"	04df8dd30da8b5853f48cc1ac9b695a8.exe

Renames multiple (144) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
Disables Task Manager via registry modification
evasion

Possible privilege escalation attempt 7 IoCs

exploit

pid	Process
2876	icacls.exe
2808	takeown.exe
3012	icacls.exe
2692	takeown.exe
2308	takeown.exe
3008	icacls.exe
2992	takeown.exe

Modifies file permissions 1 TTPs 7 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3008	icacls.exe
2992	takeown.exe
2876	icacls.exe
2808	takeown.exe
3012	icacls.exe
2692	takeown.exe
2308	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
T1552.001

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wp.bmp"	04df8dd30da8b5853f48cc1ac9b695a8.exe

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

System Information Discovery
T1082

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2536	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
3040	04df8dd30da8b5853f48cc1ac9b695a8.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
Token: SeDebugPrivilege	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe
Token: SeTakeOwnershipPrivilege	2992	takeown.exe
Token: SeTakeOwnershipPrivilege	2808	takeown.exe
Token: SeTakeOwnershipPrivilege	2692	takeown.exe
Token: SeTakeOwnershipPrivilege	2308	takeown.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 1740	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe	28
PID 3040 wrote to memory of 1740	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe	28
PID 3040 wrote to memory of 1740	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe	28
PID 1740 wrote to memory of 2992	1740	cmd.exe	30
PID 1740 wrote to memory of 2992	1740	cmd.exe	30
PID 1740 wrote to memory of 2992	1740	cmd.exe	30
PID 1740 wrote to memory of 2876	1740	cmd.exe	31
PID 1740 wrote to memory of 2876	1740	cmd.exe	31
PID 1740 wrote to memory of 2876	1740	cmd.exe	31
PID 1740 wrote to memory of 2808	1740	cmd.exe	32
PID 1740 wrote to memory of 2808	1740	cmd.exe	32
PID 1740 wrote to memory of 2808	1740	cmd.exe	32
PID 1740 wrote to memory of 3012	1740	cmd.exe	33
PID 1740 wrote to memory of 3012	1740	cmd.exe	33
PID 1740 wrote to memory of 3012	1740	cmd.exe	33
PID 1740 wrote to memory of 2692	1740	cmd.exe	34
PID 1740 wrote to memory of 2692	1740	cmd.exe	34
PID 1740 wrote to memory of 2692	1740	cmd.exe	34
PID 1740 wrote to memory of 3008	1740	cmd.exe	36
PID 1740 wrote to memory of 3008	1740	cmd.exe	36
PID 1740 wrote to memory of 3008	1740	cmd.exe	36
PID 1740 wrote to memory of 2308	1740	cmd.exe	35
PID 1740 wrote to memory of 2308	1740	cmd.exe	35
PID 1740 wrote to memory of 2308	1740	cmd.exe	35
PID 3040 wrote to memory of 1876	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe	41
PID 3040 wrote to memory of 1876	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe	41
PID 3040 wrote to memory of 1876	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe	41
PID 1876 wrote to memory of 848	1876	cmd.exe	42
PID 1876 wrote to memory of 848	1876	cmd.exe	42
PID 1876 wrote to memory of 848	1876	cmd.exe	42
PID 3040 wrote to memory of 2536	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe	43
PID 3040 wrote to memory of 2536	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe	43
PID 3040 wrote to memory of 2536	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe	43
PID 3040 wrote to memory of 2920	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe	45
PID 3040 wrote to memory of 2920	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe	45
PID 3040 wrote to memory of 2920	3040	04df8dd30da8b5853f48cc1ac9b695a8.exe	45

C:\Users\Admin\AppData\Local\Temp\04df8dd30da8b5853f48cc1ac9b695a8.exe
"C:\Users\Admin\AppData\Local\Temp\04df8dd30da8b5853f48cc1ac9b695a8.exe"
1⤵
- Modifies WinLogon for persistence
- Sets desktop wallpaper using registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3040
- 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:1740
- - C:\Windows\system32\takeown.exe
    takeown /f C:\Windows\System32
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:2992
- - C:\Windows\system32\icacls.exe
    icacls C:\Windows\System32 /grant Admin:F
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:2876
- - C:\Windows\system32\takeown.exe
    takeown /f C:\Windows\System32\drivers
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:2808
- - C:\Windows\system32\icacls.exe
    icacls C:\Windows\System32\drivers /grant Admin:F
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3012
- - 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:2692
- - C:\Windows\system32\takeown.exe
    takeown /f C:\bootmgr
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:2308
- - C:\Windows\system32\icacls.exe
    icacls C:\Windows\System32\LogonUI.exe /grant Admin:F
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3008
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /k rundll32 user32.dll,UpdatePerUserSystemParameters && Exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1876
- - C:\Windows\system32\rundll32.exe
    rundll32 user32.dll,UpdatePerUserSystemParameters
    3⤵
    PID:848
- 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:2536
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 3040 -s 900
  2⤵
  PID:2920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Local Storage\leveldb\000005.log

Filesize
16B

MD5
79bb29efb8fb96f11016ce4754e80b6b

SHA1
9ed8d422a9926e01c03bff38c34beadf2522ca7c

SHA256
5de2e6ca20d8f3b3a7683cce544979246d9eb2f27a94c184d9a50775ebb7ca02

SHA512
d742556f9751c6f73dcc2d80fb5e8643fb1613ea4a67cf923c52c310864b6dde95a3a8e4d02c8309c8778e9cab75d528b52e30988a6eedbadbeb61c0ba76df51

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

Filesize
1KB

MD5
7db09a04d53ec49b19596d7836ac2286

SHA1
f92b734a6fd58d4a729d14f32bd69d588d03fb70

SHA256
eb07471b556a3a18b04c9f14d98f0d8345f6a249a74eea2148af19b50c97c5e7

SHA512
fc597891e55cfd69aaf709d20f89c088c6e4632a0f1b3286aaee2d22f98a7f01aaff1f8ec2660086f3434a02d4ea9fa0a5df60eac95abe9be56be8aee6d92897

Download Submit
memory/3040-110-0x000007FEF54A0000-0x000007FEF5E8C000-memory.dmp

Filesize
9.9MB

Download
memory/3040-327-0x000000001B5D0000-0x000000001B650000-memory.dmp

Filesize
512KB

Download
memory/3040-0-0x0000000000940000-0x0000000000F60000-memory.dmp

Filesize
6.1MB

Download
memory/3040-145-0x000000001B5D0000-0x000000001B650000-memory.dmp

Filesize
512KB

Download
memory/3040-323-0x000000001B5D0000-0x000000001B650000-memory.dmp

Filesize
512KB

Download
memory/3040-324-0x000000001B5D0000-0x000000001B650000-memory.dmp

Filesize
512KB

Download
memory/3040-1-0x000007FEF54A0000-0x000007FEF5E8C000-memory.dmp

Filesize
9.9MB

Download
memory/3040-2-0x000000001B5D0000-0x000000001B650000-memory.dmp

Filesize
512KB

Download
memory/3040-328-0x000000001B5D0000-0x000000001B650000-memory.dmp

Filesize
512KB

Download
memory/3040-329-0x000000001B5D0000-0x000000001B650000-memory.dmp

Filesize
512KB

Download
memory/3040-330-0x000000001B5D0000-0x000000001B650000-memory.dmp

Filesize
512KB

Download
memory/3040-331-0x000000001B5D0000-0x000000001B650000-memory.dmp

Filesize
512KB

Download
memory/3040-332-0x000000001B5D0000-0x000000001B650000-memory.dmp

Filesize
512KB

Download
memory/3040-333-0x000000001B5D0000-0x000000001B650000-memory.dmp

Filesize
512KB

Download
memory/3040-334-0x000000001B5D0000-0x000000001B650000-memory.dmp

Filesize
512KB

Download