c0d3d9536f434075022bb09d0523b74aee433dec55d96103d93c1ba4498d2fed

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/01/2024, 20:14

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

1fa5f289c2dd624b4da157b67c4b3954.exe
Size

15KB
MD5

1fa5f289c2dd624b4da157b67c4b3954
SHA1

1fe176203eced9cfd6a1f6b920b7ab54c8b804de
SHA256

c0d3d9536f434075022bb09d0523b74aee433dec55d96103d93c1ba4498d2fed
SHA512

900f0d8827957dc93f86875537ec5da8ef037a8df81e969f1bec6dc82aeee48027758e78fe74b1582c67b44fcc2886bd211bdd140ccf58a1843d68d515cc8322
SSDEEP

384:WqPKe+qWpQsSV/PpHgbcWP7BswEb9vJEyT:WTUYQ/P0VPhe9F

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\gezmakrz.dll = "{AF976DCD-754F-4ac2-BE49-951DC7AA57D2}"	1fa5f289c2dd624b4da157b67c4b3954.exe

Loads dropped DLL 1 IoCs

pid	Process
2300	1fa5f289c2dd624b4da157b67c4b3954.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\gezmakrz.tmp	1fa5f289c2dd624b4da157b67c4b3954.exe
File opened for modification	C:\Windows\SysWOW64\gezmakrz.tmp	1fa5f289c2dd624b4da157b67c4b3954.exe
File opened for modification	C:\Windows\SysWOW64\gezmakrz.nls	1fa5f289c2dd624b4da157b67c4b3954.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AF976DCD-754F-4ac2-BE49-951DC7AA57D2}	1fa5f289c2dd624b4da157b67c4b3954.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AF976DCD-754F-4ac2-BE49-951DC7AA57D2}\InProcServer32	1fa5f289c2dd624b4da157b67c4b3954.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AF976DCD-754F-4ac2-BE49-951DC7AA57D2}\InProcServer32\ = "C:\\Windows\\SysWow64\\gezmakrz.dll"	1fa5f289c2dd624b4da157b67c4b3954.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AF976DCD-754F-4ac2-BE49-951DC7AA57D2}\InProcServer32\ThreadingModel = "Apartment"	1fa5f289c2dd624b4da157b67c4b3954.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2300	1fa5f289c2dd624b4da157b67c4b3954.exe
2300	1fa5f289c2dd624b4da157b67c4b3954.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2300	1fa5f289c2dd624b4da157b67c4b3954.exe
2300	1fa5f289c2dd624b4da157b67c4b3954.exe
2300	1fa5f289c2dd624b4da157b67c4b3954.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2300 wrote to memory of 4848	2300	1fa5f289c2dd624b4da157b67c4b3954.exe	98
PID 2300 wrote to memory of 4848	2300	1fa5f289c2dd624b4da157b67c4b3954.exe	98
PID 2300 wrote to memory of 4848	2300	1fa5f289c2dd624b4da157b67c4b3954.exe	98

C:\Users\Admin\AppData\Local\Temp\1fa5f289c2dd624b4da157b67c4b3954.exe
"C:\Users\Admin\AppData\Local\Temp\1fa5f289c2dd624b4da157b67c4b3954.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\5416.tmp.bat
  2⤵
  PID:4848

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\5416.tmp.bat

Filesize
179B

MD5
393bdbd91735c4f179c5d4b621e21dcd

SHA1
65ef56551ac6b757d65fb29a2eb66eaa07723f79

SHA256
e63b9004f84eb91798db51d4a746cc670575a55adee20e5ab9e55a85cb295534

SHA512
ebfdc7e180b6f98a11bb8123fb3279670fc7f263e6f69f574d517c49a4e1ea76bacb0db0279de64dc345ea4f5c418bd85dbd8712838166d7dc8f8283f3c42c1c

Download Submit
C:\Windows\SysWOW64\gezmakrz.nls

Filesize
428B

MD5
de74ac117042d88ba41481a8d8762d58

SHA1
0b9bc83b2f4b4867dcda00ade4dd7b42ce8d884c

SHA256
3d7f2907e48ae8242207935f444d7d75cd0b15f2291112d35bb103612647872d

SHA512
973345e037cf46b5364ccd955927d07ec8666d5923ea6740406527a0170c72b5814598f81bab4d5434dfb36a3acf131ebeec65206b0b7c9bc320f285acc2a612

Download Submit
C:\Windows\SysWOW64\gezmakrz.tmp

Filesize
2.0MB

MD5
4dee46086ff68ab570cf1cc336035a7b

SHA1
1750c959dd8a648939585beeb90d838ac3ce5b8d

SHA256
8277e0ac3b63b31fa27e6e6a4cccda219a40a9cc038b6c0384193c091d846510

SHA512
69f8ba2d1e991c431c2495fe780afd9bcbf467c2f125de24d2de53139ea01f6c6526037f6c0af832275235067ea83bf8478652796cf56d55fce2fe479b68deda

Download Submit
memory/2300-17-0x0000000010000000-0x000000001006C000-memory.dmp

Filesize
432KB

Download
memory/2300-22-0x0000000010000000-0x000000001006C000-memory.dmp

Filesize
432KB

Download