1e40bce6e476e4c0485b3f813cff5d493b1e07f52a89b56a31765529b809ea33

General

Target

myfile.exe
Size

4.3MB
MD5

0a438448cebd370318b5294775e2405c
SHA1

60abd37bf94ee406653af60e5b72f1f69f646308
SHA256

1e40bce6e476e4c0485b3f813cff5d493b1e07f52a89b56a31765529b809ea33
SHA512

dc21a068d6aa3ce93a399d2b636a4dc17fd9b2f60c921eaadaef4eb0049c4ef5d1c09479c906660d0fa7bb7e688cdae54a36d9e73e35ac209e469a862c992976

Score

8^/10

ransomware

Malware Config

Signatures

Executes dropped EXE 3 IoCs

Processes:

HexInformation.exeHexDecryptor.exeHexLocker.exe

pid process

1908 HexInformation.exe
1912 HexDecryptor.exe
1768 HexLocker.exe
Enumerates connected drives 3 TTPs

Query Registry
T1012

Peripheral Device Discovery
T1120

System Information Discovery
T1082

pid	process
1908	HexInformation.exe
1912	HexDecryptor.exe
1768	HexLocker.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

HexLocker.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wl.jpg"	HexLocker.exe

Modifies Control Panel 1 IoCs
evasion

Processes:

HexLocker.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Control Panel\Desktop HexLocker.exe
Suspicious behavior: CmdExeWriteProcessMemorySpam 3 IoCs

Processes:

HexInformation.exeHexDecryptor.exeHexLocker.exe

pid process

1908 HexInformation.exe
1912 HexDecryptor.exe
1768 HexLocker.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

HexInformation.exe

pid process

1908 HexInformation.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Control Panel\Desktop	HexLocker.exe

pid	process
1908	HexInformation.exe
1912	HexDecryptor.exe
1768	HexLocker.exe

pid	process
1908	HexInformation.exe

Suspicious use of WriteProcessMemory 35 IoCs

Processes:

myfile.execmd.exeHexDecryptor.exe

description	pid	process	target process
PID 1584 wrote to memory of 1804	1584	myfile.exe	cmd.exe
PID 1584 wrote to memory of 1804	1584	myfile.exe	cmd.exe
PID 1584 wrote to memory of 1804	1584	myfile.exe	cmd.exe
PID 1584 wrote to memory of 1804	1584	myfile.exe	cmd.exe
PID 1804 wrote to memory of 1836	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1836	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1836	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1844	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1844	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1844	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1856	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1856	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1856	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1868	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1868	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1868	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1896	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1896	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1896	1804	cmd.exe	tree.com
PID 1804 wrote to memory of 1908	1804	cmd.exe	HexInformation.exe
PID 1804 wrote to memory of 1908	1804	cmd.exe	HexInformation.exe
PID 1804 wrote to memory of 1908	1804	cmd.exe	HexInformation.exe
PID 1804 wrote to memory of 1908	1804	cmd.exe	HexInformation.exe
PID 1804 wrote to memory of 1912	1804	cmd.exe	HexDecryptor.exe
PID 1804 wrote to memory of 1912	1804	cmd.exe	HexDecryptor.exe
PID 1804 wrote to memory of 1912	1804	cmd.exe	HexDecryptor.exe
PID 1804 wrote to memory of 1912	1804	cmd.exe	HexDecryptor.exe
PID 1804 wrote to memory of 1768	1804	cmd.exe	HexLocker.exe
PID 1804 wrote to memory of 1768	1804	cmd.exe	HexLocker.exe
PID 1804 wrote to memory of 1768	1804	cmd.exe	HexLocker.exe
PID 1804 wrote to memory of 1768	1804	cmd.exe	HexLocker.exe
PID 1912 wrote to memory of 1964	1912	HexDecryptor.exe	cmd.exe
PID 1912 wrote to memory of 1964	1912	HexDecryptor.exe	cmd.exe
PID 1912 wrote to memory of 1964	1912	HexDecryptor.exe	cmd.exe
PID 1912 wrote to memory of 1964	1912	HexDecryptor.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\myfile.exe
"C:\Users\Admin\AppData\Local\Temp\myfile.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1584

C:\Windows\system32\cmd.exe
"C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\363D.tmp\363E.tmp\364E.bat C:\Users\Admin\AppData\Local\Temp\myfile.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1804

C:\Windows\system32\tree.com
tree
3⤵
PID:1836

C:\Windows\system32\tree.com
tree
3⤵
PID:1844

C:\Windows\system32\tree.com
tree
3⤵
PID:1856

C:\Windows\system32\tree.com
tree
3⤵
PID:1868

C:\Windows\system32\tree.com
tree
3⤵
PID:1896

C:\Users\Admin\Desktop\HexInformation.exe
HexInformation.exe
3⤵
- Executes dropped EXE
- Suspicious behavior: CmdExeWriteProcessMemorySpam
- Suspicious use of FindShellTrayWindow
PID:1908

C:\Users\Admin\Desktop\HexDecryptor.exe
HexDecryptor.exe
3⤵
- Executes dropped EXE
- Suspicious behavior: CmdExeWriteProcessMemorySpam
- Suspicious use of WriteProcessMemory
PID:1912

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd" /c "C:\Users\Admin\AppData\Local\Temp\39E5.tmp\39E6.tmp\39E7.bat C:\Users\Admin\Desktop\HexDecryptor.exe"
4⤵
PID:1964

C:\Users\Admin\Desktop\HexLocker.exe
HexLocker.exe
3⤵
- Executes dropped EXE
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Suspicious behavior: CmdExeWriteProcessMemorySpam
PID:1768

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Defacement

1

T1491

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\363D.tmp\363E.tmp\364E.bat

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C:\Users\Admin\AppData\Local\Temp\39E5.tmp\39E6.tmp\39E7.bat

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C:\Users\Admin\AppData\Local\Temp\HexDCIF.hex

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C:\Users\Admin\AppData\Local\Temp\HexIF.hex

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C:\Users\Admin\AppData\Local\Temp\HexLK.hex

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C:\Users\Admin\AppData\Local\Temp\rd000db.dll

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C:\Users\Admin\Desktop\HexDecryptor.exe

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C:\Users\Admin\Desktop\HexDecryptor.exe

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C:\Users\Admin\Desktop\HexInformation.exe

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C:\Users\Admin\Desktop\HexInformation.exe

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C:\Users\Admin\Desktop\HexLocker.exe

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C:\Users\Admin\Desktop\HexLocker.exe

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memory/1768-18-0x0000000000000000-mapping.dmp

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memory/1768-19-0x0000000000000000-mapping.dmp

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memory/1796-28-0x000007FEF68A0000-0x000007FEF6B1A000-memory.dmp

Filesize
2.5MB

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memory/1804-0-0x0000000000000000-mapping.dmp

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memory/1836-2-0x0000000000000000-mapping.dmp

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memory/1844-3-0x0000000000000000-mapping.dmp

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memory/1856-4-0x0000000000000000-mapping.dmp

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memory/1868-5-0x0000000000000000-mapping.dmp

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memory/1896-6-0x0000000000000000-mapping.dmp

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memory/1908-12-0x0000000000000000-mapping.dmp

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memory/1908-11-0x0000000000000000-mapping.dmp

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memory/1908-21-0x0000000073E30000-0x000000007451E000-memory.dmp

Filesize
6.9MB

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memory/1908-26-0x0000000000F40000-0x0000000000F41000-memory.dmp

Filesize
4KB

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memory/1912-14-0x0000000000000000-mapping.dmp

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memory/1912-15-0x0000000000000000-mapping.dmp

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memory/1964-22-0x0000000000000000-mapping.dmp

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Analysis

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