guloader | b3cc4e1f09aa77a31e7071f2a505bfe5f13f9ec3cb73997b0d4a5ac36fc710fa

Analysis

max time kernel
144s
max time network
143s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 14:12

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General

Target

ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe
Size

72KB
MD5

bebdb7689b5697c9c63a45b3f367151b
SHA1

76fba6d49342b6a66212e5fa412b378938d27ffa
SHA256

a8465b4f33e83daa0a165222ced1ada582be57b3d55f386dacbbce8463f31256
SHA512

03ab75ef2ddb1b2389f4d88d6e19448dd93a25498e8393eaf69356385d11b9d7329cde4869fa4dd9321942a7f63ba32f0c1c85353de7848439071c8630d00bd8
SSDEEP

1536:LQtJgJi0e+J9VbfiFmRZ9KbyVbrJgJi0e+J:kwE+HVrKbyVnwE+

Score

10^/10

guloader discovery downloader

Malware Config

Extracted

Family

guloader

https://drive.google.com/uc?export=download&id=1VToYtsw5rlxVp08dM1TZ1rGrnrsQ10fg

xor.base64

Signatures

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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
5	drive.google.com
4	drive.google.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
580	ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe
2108	ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 580 set thread context of 2108	580	ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe	31

System Location Discovery: System Language Discovery 1 TTPs 2 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	ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
580	ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
580	ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 580 wrote to memory of 2108	580	ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe	31
PID 580 wrote to memory of 2108	580	ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe	31
PID 580 wrote to memory of 2108	580	ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe	31
PID 580 wrote to memory of 2108	580	ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe	31
PID 580 wrote to memory of 2108	580	ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe	31

C:\Users\Admin\AppData\Local\Temp\ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe
"C:\Users\Admin\AppData\Local\Temp\ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:580
- C:\Users\Admin\AppData\Local\Temp\ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe
  "C:\Users\Admin\AppData\Local\Temp\ADMIN DEPT. INVOICES 482 SGT STATEMENT.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/580-2-0x0000000000300000-0x0000000000308000-memory.dmp

Filesize
32KB

Download
memory/580-3-0x0000000077381000-0x0000000077482000-memory.dmp

Filesize
1.0MB

Download
memory/580-5-0x0000000077380000-0x0000000077529000-memory.dmp

Filesize
1.7MB

Download
memory/580-4-0x0000000000300000-0x0000000000308000-memory.dmp

Filesize
32KB

Download
memory/580-25-0x0000000077380000-0x0000000077529000-memory.dmp

Filesize
1.7MB

Download
memory/2108-6-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/2108-8-0x0000000077380000-0x0000000077529000-memory.dmp

Filesize
1.7MB

Download
memory/2108-26-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download