guloader | ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e

General

Target

REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe
Size

1.1MB
MD5

c9be41835670dc7812af02619f861485
SHA1

f8e6324e38e340edde3f1845657e7e44d2c32693
SHA256

ed11370881ad079a86feb9c031523e138250d5bad2d213f44965b011e2a8b17e
SHA512

9d049ec2cb20a9a07f6eebaa3959932354ebe0484fdccd3f526d170177ba5c3b12aa9a5f1668603c93e469ffa025993cdc3319bd9209ff56f37e47b504b7dccd
SSDEEP

24576:sp7xzos/n1G9vXf8Je8iMt0azVysw6dCjZ9Fo:uxzog1G5XU3pt5E6kjZ9Fo

Score

10^/10

guloader discovery downloader evasion spyware stealer

Malware Config

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Disables Task Manager via registry modification
evasion

Loads dropped DLL 2 IoCs

pid	Process
2640	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe
2640	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

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

Web Service

T1102

flow	ioc
3	drive.google.com
5	drive.google.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
14	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1456	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2640	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe
1456	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2640 set thread context of 1456	2640	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe	30

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\inconversibility\agouti.ini	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe

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

System Information Discovery
T1082

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	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2640	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1456	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 1456	2640	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe	30
PID 2640 wrote to memory of 1456	2640	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe	30
PID 2640 wrote to memory of 1456	2640	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe	30
PID 2640 wrote to memory of 1456	2640	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe	30
PID 2640 wrote to memory of 1456	2640	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe	30
PID 2640 wrote to memory of 1456	2640	REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe	30

C:\Users\Admin\AppData\Local\Temp\REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Users\Admin\AppData\Local\Temp\REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\REQUESTFORQUOATIONANDPRICES01306-24_pdf.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsj47EB.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/1456-21-0x0000000077280000-0x0000000077429000-memory.dmp

Filesize
1.7MB

Download
memory/1456-43-0x00000000004C0000-0x0000000001522000-memory.dmp

Filesize
16.4MB

Download
memory/1456-44-0x00000000004C0000-0x00000000004DE000-memory.dmp

Filesize
120KB

Download
memory/2640-17-0x00000000036B0000-0x0000000004645000-memory.dmp

Filesize
15.6MB

Download
memory/2640-19-0x0000000077280000-0x0000000077429000-memory.dmp

Filesize
1.7MB

Download
memory/2640-18-0x0000000077281000-0x0000000077382000-memory.dmp

Filesize
1.0MB

Download
memory/2640-20-0x00000000036B0000-0x0000000004645000-memory.dmp

Filesize
15.6MB

Download

Analysis

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