guloader | 5b2d8544080b589c6c6232ac9d3339a323e93a21849a3834a4c92fab866f4acf

Analysis

max time kernel
92s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2024 12:31

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General

Target

ekstre.exe
Size

451KB
MD5

5ec64dde0fa21d026fd3f2aae80d3cfd
SHA1

59cdad1ec55c65251aa175452bbea2cd6cf2d280
SHA256

f0f6ece4bcfd2bf35aca011e40cfca442bee969a99eb852de791b0065ae5ffe6
SHA512

3e0419dd8b5da2e41dd4a11480760a02e955fdffcc988008e072593712ae3f3c95bcdfabe974e0e9c6087f115ba9ffba4d6a6f352f4498e9c8d4994313072f1c
SSDEEP

3072:CNRCywDw1DiJkuzL/v1NpooYYYYYYYYYYJ41YYYYYYYYYYHuT5h10OuoUXvsMYkD:CT4DtnjaTuN3kSQrO2TptDr

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
4752	ekstre.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 Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\Feltdefinition\Sprgestningen\Hyppigheders.Lif	ekstre.exe
File opened for modification	C:\Windows\Fonts\Astylar.ini	ekstre.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	ekstre.exe

C:\Users\Admin\AppData\Local\Temp\ekstre.exe
"C:\Users\Admin\AppData\Local\Temp\ekstre.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:4752

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\nsp57D.tmp\System.dll

Filesize
12KB

MD5
564bb0373067e1785cba7e4c24aab4bf

SHA1
7c9416a01d821b10b2eef97b80899d24014d6fc1

SHA256
7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5

SHA512
22c61a323cb9293d7ec5c7e7e60674d0e2f7b29d55be25eb3c128ea2cd7440a1400cee17c43896b996278007c0d247f331a9b8964e3a40a0eb1404a9596c4472

Download Submit
memory/4752-4-0x0000000000400000-0x00000000004D7000-memory.dmp

Filesize
860KB

Download
memory/4752-6-0x0000000000470000-0x00000000004D7000-memory.dmp

Filesize
412KB

Download
memory/4752-7-0x0000000000470000-0x00000000004D7000-memory.dmp

Filesize
412KB

Download