guloader | 6ed574852bf78784b403818ddfd45d7d403fa3779cd021c68cf84ff5cf216601

Analysis

max time kernel
94s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-12-2024 23:26

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General

Target

Masonic.exe
Size

366KB
MD5

ce5a7f35800a959fd70c2795435033d0
SHA1

dbc2b1e8abeaa29d0c88c03ae8f3ec6662750bf7
SHA256

375eb2835d2d093d9ec26dfc20d6d560b475ba7d462673bb3a5e53edc7beb38a
SHA512

e5a8da201ad7a194b76a3d0d55f246cac373216178514cff3d5c2afecd8777a7e41e0311582dc71c8565314002d36c73837437aa6e853bf5376e5070a80acf4d
SSDEEP

6144:Ewq3Np8RBcKsECowfQixykTI0sndnMlneyTZeLG4t6bkAPGM00gKpcgw:EzIRBcKMfQMj+DE8LkwOKgw

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 1 IoCs

pid	Process
2340	Masonic.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Incendiary\Titreredes\Microfauna.Lau	Masonic.exe
File opened for modification	C:\Windows\SysWOW64\Kunstmuseets\Saml\Transilluminating.Bug	Masonic.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 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	Masonic.exe

C:\Users\Admin\AppData\Local\Temp\Masonic.exe
"C:\Users\Admin\AppData\Local\Temp\Masonic.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
PID:2340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsrBCB0.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/2340-7-0x0000000004A60000-0x0000000004B61000-memory.dmp

Filesize
1.0MB

Download
memory/2340-8-0x0000000004A60000-0x0000000004B61000-memory.dmp

Filesize
1.0MB

Download