ad861f41bb4a31ee778bf60cecf0a7bdd9c0cc91d5cc17775d15199c214fbccf

Analysis

max time kernel
149s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-11-2024 09:15

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General

Target

OsLock.exe
Size

385KB
MD5

675ea787630f596da0474830ffb49723
SHA1

c8e18cbc3cca1ded47eb5860a71b9f22d46409e1
SHA256

ad861f41bb4a31ee778bf60cecf0a7bdd9c0cc91d5cc17775d15199c214fbccf
SHA512

fa3c2c6edd3435bd16ec652c1738695cd1e8cdbd010b55fd856cefdbebd50552074d06e9b66860fae9c3a2f71ffe1076bb0227944b49286f05e1a3a4c871014d
SSDEEP

6144:Z1IE/9oydPc4IvjTZlyZsDDyr3rAUp48zUCpM69/KImQi/6ebkY:Z1vlc4IrTZlyGDc54

Score

10^/10

defense_evasion persistence

Malware Config

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\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\OsLock.exe\""	OsLock.exe

Adds Run key to start application 2 TTPs 13 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\System3264Wow = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\OsLock.exe\" --init"	OsLock.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\WINDOWS = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\OsLock.exe\" --wininit"	OsLock.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_7 = "ux-cryptor.exe"	OsLock.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_8 = "crypt0rsx.exe"	OsLock.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_2 = "taskhost.exe"	OsLock.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_3 = "windowsx-c.exe"	OsLock.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_4 = "System.exe"	OsLock.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_5 = "_default64.exe"	OsLock.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsInstaller = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\OsLock.exe\" -startup"	OsLock.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSEdgeUpdateX = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\OsLock.exe\""	OsLock.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\OneDrive10293 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\OsLock.exe\" /setup"	OsLock.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_1 = "AWindowsService.exe"	OsLock.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WIN32_6 = "native.exe"	OsLock.exe

Drops desktop.ini file(s) 4 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	attrib.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	attrib.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	attrib.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	attrib.exe

Hide Artifacts: Hidden Files and Directories 1 TTPs 6 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
1108	cmd.exe
1880	cmd.exe
1432	cmd.exe
740	cmd.exe
4320	cmd.exe
3700	cmd.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1404	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
460	OsLock.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	460	OsLock.exe
Token: SeDebugPrivilege	1404	taskkill.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 460 wrote to memory of 3700	460	OsLock.exe	84
PID 460 wrote to memory of 3700	460	OsLock.exe	84
PID 460 wrote to memory of 1108	460	OsLock.exe	85
PID 460 wrote to memory of 1108	460	OsLock.exe	85
PID 460 wrote to memory of 4320	460	OsLock.exe	86
PID 460 wrote to memory of 4320	460	OsLock.exe	86
PID 460 wrote to memory of 740	460	OsLock.exe	87
PID 460 wrote to memory of 740	460	OsLock.exe	87
PID 460 wrote to memory of 1432	460	OsLock.exe	88
PID 460 wrote to memory of 1432	460	OsLock.exe	88
PID 460 wrote to memory of 1880	460	OsLock.exe	90
PID 460 wrote to memory of 1880	460	OsLock.exe	90
PID 460 wrote to memory of 1404	460	OsLock.exe	91
PID 460 wrote to memory of 1404	460	OsLock.exe	91
PID 1108 wrote to memory of 5096	1108	cmd.exe	98
PID 1108 wrote to memory of 5096	1108	cmd.exe	98
PID 3700 wrote to memory of 856	3700	cmd.exe	99
PID 3700 wrote to memory of 856	3700	cmd.exe	99
PID 1108 wrote to memory of 5092	1108	cmd.exe	100
PID 1108 wrote to memory of 5092	1108	cmd.exe	100
PID 1432 wrote to memory of 2468	1432	cmd.exe	101
PID 1432 wrote to memory of 2468	1432	cmd.exe	101
PID 1880 wrote to memory of 2564	1880	cmd.exe	102
PID 1880 wrote to memory of 2564	1880	cmd.exe	102
PID 4320 wrote to memory of 1524	4320	cmd.exe	103
PID 4320 wrote to memory of 1524	4320	cmd.exe	103
PID 740 wrote to memory of 1444	740	cmd.exe	104
PID 740 wrote to memory of 1444	740	cmd.exe	104
PID 4320 wrote to memory of 4868	4320	cmd.exe	105
PID 4320 wrote to memory of 4868	4320	cmd.exe	105
PID 1880 wrote to memory of 444	1880	cmd.exe	106
PID 1880 wrote to memory of 444	1880	cmd.exe	106
PID 3700 wrote to memory of 2808	3700	cmd.exe	107
PID 3700 wrote to memory of 2808	3700	cmd.exe	107
PID 1432 wrote to memory of 4260	1432	cmd.exe	108
PID 1432 wrote to memory of 4260	1432	cmd.exe	108
PID 740 wrote to memory of 4540	740	cmd.exe	109
PID 740 wrote to memory of 4540	740	cmd.exe	109

Views/modifies file attributes 1 TTPs 12 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
5092	attrib.exe
2564	attrib.exe
1444	attrib.exe
4540	attrib.exe
4868	attrib.exe
2808	attrib.exe
4260	attrib.exe
856	attrib.exe
5096	attrib.exe
1524	attrib.exe
2468	attrib.exe
444	attrib.exe

C:\Users\Admin\AppData\Local\Temp\OsLock.exe
"C:\Users\Admin\AppData\Local\Temp\OsLock.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:460
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c F: & attrib +h +s +r +i /D & echo [%RANDOM%] Упсик Твои файлы Зашифрованы! Пиши @N0TK4RMA 1>info-0v92.txt & attrib -h +s +r info-lox.txt
  2⤵
  - Hide Artifacts: Hidden Files and Directories
  - Suspicious use of WriteProcessMemory
  PID:3700
- - C:\Windows\system32\attrib.exe
    attrib +h +s +r +i /D
    3⤵
    - Views/modifies file attributes
    PID:856
- - C:\Windows\system32\attrib.exe
    attrib -h +s +r info-lox.txt
    3⤵
    - Views/modifies file attributes
    PID:2808
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c cd "%userprofile%\desktop"&attrib +h +s +r +i /D & echo [%RANDOM%] Упсик Твои файлы Зашифрованы! Пиши @N0TK4RMA 1>info-0v92.txt & attrib -h +s +r info-lox.txt
  2⤵
  - Hide Artifacts: Hidden Files and Directories
  - Suspicious use of WriteProcessMemory
  PID:1108
- - C:\Windows\system32\attrib.exe
    attrib +h +s +r +i /D
    3⤵
    - Drops desktop.ini file(s)
    - Views/modifies file attributes
    PID:5096
- - C:\Windows\system32\attrib.exe
    attrib -h +s +r info-lox.txt
    3⤵
    - Views/modifies file attributes
    PID:5092
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c cd "%systemdrive%\Users\Public\Desktop"&attrib +h +s +r +i /D & echo [%RANDOM%] Упсик Твои файлы Зашифрованы! Пиши @N0TK4RMA 1>info-0v92.txt & attrib -h +s +r info-lox.txt
  2⤵
  - Hide Artifacts: Hidden Files and Directories
  - Suspicious use of WriteProcessMemory
  PID:4320
- - C:\Windows\system32\attrib.exe
    attrib +h +s +r +i /D
    3⤵
    - Drops desktop.ini file(s)
    - Views/modifies file attributes
    PID:1524
- - C:\Windows\system32\attrib.exe
    attrib -h +s +r info-lox.txt
    3⤵
    - Views/modifies file attributes
    PID:4868
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c cd "%userprofile%\downloads"&attrib +h +s +r +i /D & echo [%RANDOM%] Упсик Твои файлы Зашифрованы! Пиши @N0TK4RMA 1>info-0v92.txt & attrib -h +s +r info-lox.txt
  2⤵
  - Hide Artifacts: Hidden Files and Directories
  - Suspicious use of WriteProcessMemory
  PID:740
- - C:\Windows\system32\attrib.exe
    attrib +h +s +r +i /D
    3⤵
    - Drops desktop.ini file(s)
    - Views/modifies file attributes
    PID:1444
- - C:\Windows\system32\attrib.exe
    attrib -h +s +r info-lox.txt
    3⤵
    - Views/modifies file attributes
    PID:4540
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c cd "%userprofile%\documents"&attrib +h +s +r +i /D & echo [%RANDOM%] Упсик Твои файлы Зашифрованы! Пиши @N0TK4RMA 1>info-0v92.txt & attrib -h +s +r info-lox.txt
  2⤵
  - Hide Artifacts: Hidden Files and Directories
  - Suspicious use of WriteProcessMemory
  PID:1432
- - C:\Windows\system32\attrib.exe
    attrib +h +s +r +i /D
    3⤵
    - Drops desktop.ini file(s)
    - Views/modifies file attributes
    PID:2468
- - C:\Windows\system32\attrib.exe
    attrib -h +s +r info-lox.txt
    3⤵
    - Views/modifies file attributes
    PID:4260
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c cd "%userprofile%"&attrib +h +s +r +i /D & echo [%RANDOM%] Упсик Твои файлы Зашифрованы! Пиши @N0TK4RMA 1>info-0v92.txt & attrib -h +s +r info-lox.txt
  2⤵
  - Hide Artifacts: Hidden Files and Directories
  - Suspicious use of WriteProcessMemory
  PID:1880
- - C:\Windows\system32\attrib.exe
    attrib +h +s +r +i /D
    3⤵
    - Views/modifies file attributes
    PID:2564
- - C:\Windows\system32\attrib.exe
    attrib -h +s +r info-lox.txt
    3⤵
    - Views/modifies file attributes
    PID:444
- C:\Windows\SYSTEM32\taskkill.exe
  taskkill.exe /im Explorer.exe /f
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:1404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\Documents\info-0v92.txt

Filesize
56B

MD5
5250167e9ed5616c92f2c49b7e295375

SHA1
6ca4f968809543f95a7c476bf39a9000231a4a4e

SHA256
0a8ce0b30dffe9ca968d05f8067a017bc48e0f5a432d75b4b7d25d59ad58a40d

SHA512
df65c59ba2c3b5033b85c4a526957c0ecd508acb2222b95133fa574df7a77abd3007a682d56312357e3ace87b88bd386c5463884d2c28c184808cf7c0608aeec

Download Submit
memory/460-18-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-27-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-17-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-12-0x00007FFF166E3000-0x00007FFF166E5000-memory.dmp

Filesize
8KB

Download
memory/460-13-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-14-0x00007FFF166E0000-0x00007FFF171A1000-memory.dmp

Filesize
10.8MB

Download
memory/460-15-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-16-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-1-0x00000000005E0000-0x0000000000646000-memory.dmp

Filesize
408KB

Download
memory/460-2-0x00007FFF166E0000-0x00007FFF171A1000-memory.dmp

Filesize
10.8MB

Download
memory/460-20-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-19-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-21-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-22-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-23-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-24-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-25-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-26-0x000000001B700000-0x000000001B8A9000-memory.dmp

Filesize
1.7MB

Download
memory/460-0-0x00007FFF166E3000-0x00007FFF166E5000-memory.dmp

Filesize
8KB

Download