guloader | d4481a94108bf7d8fdfa10a7391a3e74ae07665161da4c88ebea81ce7c154597

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26/03/2025, 15:57

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General

Target

d4481a94108bf7d8fdfa10a7391a3e74ae07665161da4c88ebea81ce7c154597.exe
Size

1.0MB
MD5

a5d4c6d1f4fcb9da2faf9b6a4852ef10
SHA1

32c8968b7f96778007f9b713f44ea7aa4439fccf
SHA256

d4481a94108bf7d8fdfa10a7391a3e74ae07665161da4c88ebea81ce7c154597
SHA512

14f3c18a0137570ec45bace1580a81803620602e6f58dc2f2fcf662b2a4550018450dc7404545aa1802eade0a8d1e5b7ed724b806b6b9339b92131dee924b9be
SSDEEP

24576:33HYZWOitFGkKt6vUVFDkhB363y7wwopt5/i6noItfef9q+qF6YaDWt6c:33hOOKt+U8hBqC7wwopt9i6oUAq+qFS0

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Loads dropped DLL 2 IoCs

pid	Process
2116	d4481a94108bf7d8fdfa10a7391a3e74ae07665161da4c88ebea81ce7c154597.exe
2116	d4481a94108bf7d8fdfa10a7391a3e74ae07665161da4c88ebea81ce7c154597.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2864	2116	WerFault.exe	29

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d4481a94108bf7d8fdfa10a7391a3e74ae07665161da4c88ebea81ce7c154597.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 2864	2116	d4481a94108bf7d8fdfa10a7391a3e74ae07665161da4c88ebea81ce7c154597.exe	30
PID 2116 wrote to memory of 2864	2116	d4481a94108bf7d8fdfa10a7391a3e74ae07665161da4c88ebea81ce7c154597.exe	30
PID 2116 wrote to memory of 2864	2116	d4481a94108bf7d8fdfa10a7391a3e74ae07665161da4c88ebea81ce7c154597.exe	30
PID 2116 wrote to memory of 2864	2116	d4481a94108bf7d8fdfa10a7391a3e74ae07665161da4c88ebea81ce7c154597.exe	30

C:\Users\Admin\AppData\Local\Temp\d4481a94108bf7d8fdfa10a7391a3e74ae07665161da4c88ebea81ce7c154597.exe
"C:\Users\Admin\AppData\Local\Temp\d4481a94108bf7d8fdfa10a7391a3e74ae07665161da4c88ebea81ce7c154597.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2116 -s 528
  2⤵
  - Program crash
  PID:2864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nst82B8.tmp\System.dll

Filesize
12KB

MD5
564bb0373067e1785cba7e4c24aab4bf

SHA1
7c9416a01d821b10b2eef97b80899d24014d6fc1

SHA256
7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5

SHA512
22c61a323cb9293d7ec5c7e7e60674d0e2f7b29d55be25eb3c128ea2cd7440a1400cee17c43896b996278007c0d247f331a9b8964e3a40a0eb1404a9596c4472

Download Submit
memory/2116-30-0x0000000003A20000-0x000000000570B000-memory.dmp

Filesize
28.9MB

Download
memory/2116-31-0x0000000003A20000-0x000000000570B000-memory.dmp

Filesize
28.9MB

Download