Malware Analysis Report

2025-08-10 19:26

Sample ID 230713-ywzztsbg3z
Target 7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a
SHA256 7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a
Tags
formbook guloader al05 downloader rat spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a

Threat Level: Known bad

The file 7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a was found to be: Known bad.

Malicious Activity Summary

formbook guloader al05 downloader rat spyware stealer trojan

Formbook

Guloader,Cloudeye

Formbook payload

Loads dropped DLL

Checks QEMU agent file

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Enumerates physical storage devices

NSIS installer

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-07-13 20:08

Signatures

NSIS installer

installer
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-07-13 20:08

Reported

2023-07-13 20:11

Platform

win10-20230703-en

Max time kernel

143s

Max time network

131s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a.exe"

Signatures

Formbook

trojan spyware stealer formbook

Guloader,Cloudeye

downloader guloader

Formbook payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Checks QEMU agent file

Description Indicator Process Target
File opened (read-only) C:\Program Files\Qemu-ga\qemu-ga.exe C:\Users\Admin\AppData\Local\Temp\7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a.exe N/A
File opened (read-only) C:\Program Files\Qemu-ga\qemu-ga.exe C:\Users\Admin\AppData\Local\Temp\7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a.exe N/A

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a.exe

"C:\Users\Admin\AppData\Local\Temp\7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a.exe"

C:\Users\Admin\AppData\Local\Temp\7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a.exe

"C:\Users\Admin\AppData\Local\Temp\7644456ea433ce8755d64746d7420bcc88df377ac1242657f6428c4a9c51173a.exe"

Network

Country Destination Domain Proto
US 192.3.179.134:80 192.3.179.134 tcp
US 8.8.8.8:53 134.179.3.192.in-addr.arpa udp
US 8.8.8.8:53 73.254.224.20.in-addr.arpa udp
US 8.8.8.8:53 9.57.101.20.in-addr.arpa udp
US 8.8.8.8:53 9.179.89.13.in-addr.arpa udp
US 8.8.8.8:53 112.208.253.8.in-addr.arpa udp

Files

\Users\Admin\AppData\Local\Temp\nsoA857.tmp\System.dll

MD5 2ae993a2ffec0c137eb51c8832691bcb
SHA1 98e0b37b7c14890f8a599f35678af5e9435906e1
SHA256 681382f3134de5c6272a49dd13651c8c201b89c247b471191496e7335702fa59
SHA512 2501371eb09c01746119305ba080f3b8c41e64535ff09cee4f51322530366d0bd5322ea5290a466356598027e6cda8ab360caef62dcaf560d630742e2dd9bcd9

memory/4956-125-0x00007FF9DB070000-0x00007FF9DB24B000-memory.dmp

memory/4956-126-0x0000000077AE1000-0x0000000077BF4000-memory.dmp

memory/4956-127-0x0000000010000000-0x0000000010006000-memory.dmp

memory/3128-128-0x0000000000400000-0x0000000001783000-memory.dmp

memory/3128-130-0x0000000000400000-0x0000000001783000-memory.dmp

memory/3128-131-0x00007FF9DB070000-0x00007FF9DB24B000-memory.dmp

memory/3128-132-0x0000000077B66000-0x0000000077B67000-memory.dmp

memory/3128-133-0x0000000000400000-0x0000000001783000-memory.dmp

memory/3128-134-0x0000000001790000-0x0000000005CF0000-memory.dmp

memory/3128-135-0x0000000036020000-0x0000000036340000-memory.dmp

memory/3128-136-0x0000000001790000-0x0000000005CF0000-memory.dmp

memory/3128-139-0x0000000077AE1000-0x0000000077BF4000-memory.dmp