a2a7d0ff3663878c9cccd3862e47b98ffb63ef3edccdd0928f7efd7ab80ba281

Analysis

max time kernel
7s
max time network
118s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
01/01/2024, 19:44

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

3db6c9f7690587b3fc0b232083cd92c6.exe
Size

124KB
MD5

3db6c9f7690587b3fc0b232083cd92c6
SHA1

e6ea10caa535afe2ee80da91070a0abf0bf01748
SHA256

a2a7d0ff3663878c9cccd3862e47b98ffb63ef3edccdd0928f7efd7ab80ba281
SHA512

b8eaaa8394c462963758d0da8617a6796cd0c78bc9006845591ce73c8c61ec5fc32b83c1a00cffc98cdd6dd1d5074f13dbe12e3381c838cc913b2507c641da55
SSDEEP

1536:6btkjqTQDQU0GgAJa0P1kNmKldCMhdu8KWP/nTn8nBP9VewNeG0h/l:akj5DQU0GgAT98t

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	3db6c9f7690587b3fc0b232083cd92c6.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	mhhir.exe

Executes dropped EXE 1 IoCs

pid	Process
2436	mhhir.exe

Loads dropped DLL 2 IoCs

pid	Process
2108	3db6c9f7690587b3fc0b232083cd92c6.exe
2108	3db6c9f7690587b3fc0b232083cd92c6.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Run\mhhir = "C:\\Users\\Admin\\mhhir.exe /W"	mhhir.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Run\mhhir = "C:\\Users\\Admin\\mhhir.exe /h"	3db6c9f7690587b3fc0b232083cd92c6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Run\mhhir = "C:\\Users\\Admin\\mhhir.exe /p"	mhhir.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Run\mhhir = "C:\\Users\\Admin\\mhhir.exe /x"	mhhir.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2108	3db6c9f7690587b3fc0b232083cd92c6.exe
2436	mhhir.exe
2436	mhhir.exe
2436	mhhir.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2108	3db6c9f7690587b3fc0b232083cd92c6.exe
2436	mhhir.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2436	2108	3db6c9f7690587b3fc0b232083cd92c6.exe	28
PID 2108 wrote to memory of 2436	2108	3db6c9f7690587b3fc0b232083cd92c6.exe	28
PID 2108 wrote to memory of 2436	2108	3db6c9f7690587b3fc0b232083cd92c6.exe	28
PID 2108 wrote to memory of 2436	2108	3db6c9f7690587b3fc0b232083cd92c6.exe	28

C:\Users\Admin\AppData\Local\Temp\3db6c9f7690587b3fc0b232083cd92c6.exe
"C:\Users\Admin\AppData\Local\Temp\3db6c9f7690587b3fc0b232083cd92c6.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\mhhir.exe
  "C:\Users\Admin\mhhir.exe"
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2436

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\mhhir.exe

Filesize
92KB

MD5
2b4a7f8755477e72102870cc6f0adf48

SHA1
0e491391e541a7a3e51a13b801ad528f987e0f16

SHA256
1ca8f6cfd759a2039696a058d8cb1cebf4a5dd54b875ffa7b3f1eca6dacdaec7

SHA512
6f3e6faea214ae2fd0effb9993eff98b38978286cf52e37242b93c7bf0d6ecda35cdf02d3dde5222753fa8efc1347a66349e00262d35880ad7fd22d6c4e8ffd5

Download Submit