7b7000f17d02cc40f0b01940ae95ec9063d84cfe1248c3d7091b52063de7010a

General

Target
LOCK.exe
Size 187KB
Sample260804-e6qpcsvzds
SHA256 7b7000f17d02cc40f0b01940ae95ec9063d84cfe1248c3d7091b52063de7010a
MD5 a5e6f99f47bf5797807edbefd74e0fe2
SHA1 c4cd4ca2cd7b0352c2c5b4e9a28251159863f367
SHA512 746a5f34138187fad49fa3f7d6a8e7a957c60bef1a0b5cc3d11e9b7637b0e67b2c427ba6c40ccee00872128a26064d06401b9e77e3d854fc7374579b036297af
SSDEEP 3072:PV3J6kkt5h1X+HqTi0BW69hd1MMdxPe9N9uA0/+hL9TBfnPPJNdquWTD4xVictLU:Ct5hBPi0BW69hd1MMdxPe9N9uA069TBY
TLSH
T122141896B1A45165C7F382B7E5214E2AD6713D601615A3E327783AFB1B3B294CB3C3E0
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

execution ransomware

Malware Config

Signatures

Badlisted process makes network request 1 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
8	1332	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Powershell Invoke Web Request.

execution

PowerShell

T1059.001

pid	Process
1332	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2370214745-1838013427-2987045292-1000\Control Panel\International\Geo\Nation	LOCK.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2370214745-1838013427-2987045292-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\wallpaper_new.jpg"	reg.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1948	cmd.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1332	powershell.exe
1332	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1332	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 1948	2296	LOCK.exe	86
PID 1948 wrote to memory of 1044	1948	cmd.exe	88
PID 1948 wrote to memory of 3856	1948	cmd.exe	89
PID 3856 wrote to memory of 1572	3856	net.exe	90
PID 1948 wrote to memory of 1332	1948	cmd.exe	91
PID 1948 wrote to memory of 4344	1948	cmd.exe	92
PID 1948 wrote to memory of 3896	1948	cmd.exe	93
PID 1948 wrote to memory of 1812	1948	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\LOCK.exe
"C:\Users\Admin\AppData\Local\Temp\LOCK.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\3E5C.tmp\3E5D.tmp\3E5E.bat C:\Users\Admin\AppData\Local\Temp\LOCK.exe"
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:1948
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:1044
- - C:\Windows\system32\net.exe
    net session
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3856
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 session
      4⤵
      PID:1572
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -Command "Invoke-WebRequest -Uri 'https://i.ibb.co/RGFK3SSx/Gemini.png' -OutFile 'C:\Users\Admin\Pictures\wallpaper_new.jpg'"
    3⤵
    - Badlisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1332
- - C:\Windows\system32\reg.exe
    reg add "HKCU\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d "C:\Users\Admin\Pictures\wallpaper_new.jpg" /f
    3⤵
    - Sets desktop wallpaper using registry
    PID:4344
- - C:\Windows\system32\rundll32.exe
    Rundll32.exe user32.dll,UpdatePerUserSystemParameters
    3⤵
    PID:3896
- - C:\Windows\system32\reg.exe
    reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_DWORD /d 1 /f
    3⤵
    PID:1812

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

PowerShell

1

T1059.001

Windows Command Shell

1

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1

T1491

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Downloads

3E5E.bat

Path C:\Users\Admin\AppData\Local\Temp\3E5C.tmp\3E5D.tmp\3E5E.bat
Size 660B
SHA256 1c9dfd061f3446aec830293c0b96f39bf9f56ca42d836cb36f4d1a74deab71b9
MD5 eb95f67dcec5b17ab6c612a98d9eaf88
SHA1 641ce12f63f22a683a2c92a57fd8bb6eaf920c98
SHA512 9853429aa77a5ea1b0a18c8e2b55a17f4e67bcf4719ecab81f46c2d85add2bbef57b0c117bea2b2e415ad9692ca4b9018e0a60e3424a2554dd624e9cb4e8048f
TLSH
T1BB012D43748702368B1081A8E83F450BFAAE66C7241014CB30E06072AE9FB2981E35CE
MD5 SHA1 SHA512 TLSH

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__PSScriptPolicyTest_ffiy0j4b.gom.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ffiy0j4b.gom.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/1332-3-0x0000016CD2B20000-0x0000016CD2B30000-memory.dmp

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memory/1332-2-0x0000016CD2B20000-0x0000016CD2B30000-memory.dmp

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memory/1332-4-0x0000016CECE60000-0x0000016CECE82000-memory.dmp

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memory/1332-12-0x0000016CD2B20000-0x0000016CD2B30000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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