mountlocker | 00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99

General

Target
00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
Size 66KB
Sample240517-rdxnesbb2x
SHA256 00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99
MD5 2c26b319e378755596f0ac6d293798c8
SHA1 280a4cfcf5dd87898c3731b680efe061bdb7a9fe
SHA512 0c2b53a3fed1dbbae64e7f1e7c17a89b5dc607ba40caecd5496e18ffd84cdad844e926742d9fc82a715d6e8b01a1c483d97d54f5be1f2d6997107946f2a3fe4b
SSDEEP 768:BS5zkUtPX/y4Jp5LmcmItHnlIH9q9Q/048RgauHADO2A:DaXq4xTlIdYrhRcH2A
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

mountlocker ransomware spyware stealer

Malware Config

Signatures

MountLocker Ransomware
Ransomware family first seen in late 2020, which threatens to leak files if ransom is not paid.
ransomware mountlocker
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

Drops desktop.ini file(s) 25 IoCs

description	ioc	Process
File opened for modification	\??\c:\Users\Admin\Desktop\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\Favorites\Links\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\Pictures\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\Videos\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Public\Documents\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\Music\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\Pictures\Saved Pictures\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\Searches\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Public\Pictures\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\3D Objects\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\Contacts\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\Favorites\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\Saved Games\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\Documents\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\Downloads\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Public\Downloads\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\Links\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Public\AccountPictures\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\OneDrive\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Public\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Public\Libraries\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Public\Videos\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Admin\Pictures\Camera Roll\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Public\Desktop\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File opened for modification	\??\c:\Users\Public\Music\desktop.ini	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\f:	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	\??\c:\Program Files\RecoveryManual.html	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
File created	\??\c:\Program Files (x86)\RecoveryManual.html	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000_Classes\.F30D4911\shell\Open\command\ = "explorer.exe RecoveryManual.html"	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
Key created	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000_Classes\.F30D4911\shell\Open\command	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
Key created	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000_Classes\.F30D4911	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
Key created	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000_Classes\.F30D4911\shell	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
Key created	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000_Classes\.F30D4911\shell\Open	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4544	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
4544	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeRestorePrivilege	4544	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
Token: SeDebugPrivilege	4544	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4544 wrote to memory of 2492	4544	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe	96
PID 4544 wrote to memory of 2492	4544	00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe	96
PID 2492 wrote to memory of 2460	2492	cmd.exe	98
PID 2492 wrote to memory of 2460	2492	cmd.exe	98

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2460	attrib.exe

C:\Users\Admin\AppData\Local\Temp\00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe
"C:\Users\Admin\AppData\Local\Temp\00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe"
1⤵
- Drops desktop.ini file(s)
- Enumerates connected drives
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4544
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\\0E577BD7.bat" "C:\Users\Admin\AppData\Local\Temp\00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2492
- - C:\Windows\system32\attrib.exe
    attrib -s -r -h "C:\Users\Admin\AppData\Local\Temp\00ed4c347cd62526226363a0aceb851b2ef7e3a4da78433a28f2cd6cbd5f1b99.exe"
    3⤵
    - Views/modifies file attributes
    PID:2460

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

1

T1564.001

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

RecoveryManual.html

Path C:\Users\Admin\3D Objects\RecoveryManual.html
Size 2KB
SHA256 8b24fe2fee8af12f8a49081098b3e3b1947e4666476ae03b4b624cfb9cd43b93
MD5 4f8c98017afadd96c62063f9a62163ea
SHA1 639617929c64ed67f0088ac093db0d28e4813475
SHA512 4ab1343ce551a3f151dc3488ed0fbaa2a54dfd7fec13a81990510ed83c348993ef7a4e0e910451cf81a5765c2c212c705fc9086378a0b0a346c1e110f099d92b
MD5 SHA1 SHA512

Submit Download

0E577BD7.bat

Path C:\Users\Admin\AppData\Local\Temp\0E577BD7.bat
Size 65B
SHA256 c80128f51871eec3ae2057989a025ce244277c1c180498a5aaef45d5214b8506
MD5 348cae913e496198548854f5ff2f6d1e
SHA1 a07655b9020205bd47084afd62a8bb22b48c0cdc
SHA512 799796736d41d3fcb5a7c859571bb025ca2d062c4b86e078302be68c1a932ed4f78e003640df5405274364b5a9a9c0ba5e37177997683ee7ab54e5267590b611
MD5 SHA1 SHA512

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