guloader | 5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0

Analysis

max time kernel
13s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-11-2024 14:45

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General

Target

5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe
Size

820KB
MD5

5854b91e3d1ef91530f96c70c8425106
SHA1

f6739b8f7d97012d8d21f94ef0116b860b120b9c
SHA256

5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0
SHA512

1fb6e0cf17dfef6945b11fc4d5faed2a926826b64be1a76add384dc51fcd1f0c76bb8e722bcc32e2b5d0d43e807132762048e48b8fdaf42def346b53dbd685d5
SSDEEP

24576:TG+yYqTgm8Lt7VUD7LE8oy9jRKta3uja581CV:66eJKUD7L7o/aT

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

Processes:

5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe

pid	process
4324	5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe
4324	5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe

Drops file in Program Files directory 1 IoCs

Processes:

5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Common Files\customization.rom	5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe

Drops file in Windows directory 1 IoCs

Processes:

5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe

description ioc process

File opened for modification C:\Windows\resources\primy.ini 5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Windows\resources\primy.ini	5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe

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

Processes:

5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe

C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe
"C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:4324
- C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe
  "C:\Users\Admin\AppData\Local\Temp\5fb792bb1793ff9314b4a3a4d3f8e267f9b833ae9467b42f0bd7df012de5d0f0.exe"
  2⤵
  PID:3660

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

C:\Users\Admin\AppData\Local\Temp\nsa8629.tmp\System.dll

Filesize
12KB

MD5
192639861e3dc2dc5c08bb8f8c7260d5

SHA1
58d30e460609e22fa0098bc27d928b689ef9af78

SHA256
23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6

SHA512
6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc

Download Submit
C:\Windows\Resources\primy.ini

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/3660-23244-0x0000000077C85000-0x0000000077C86000-memory.dmp

Filesize
4KB

Download
memory/3660-23241-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3660-23242-0x0000000001660000-0x00000000020C9000-memory.dmp

Filesize
10.4MB

Download
memory/3660-23243-0x0000000077C68000-0x0000000077C69000-memory.dmp

Filesize
4KB

Download
memory/3660-23245-0x0000000001660000-0x00000000020C9000-memory.dmp

Filesize
10.4MB

Download
memory/3660-23247-0x0000000077BE1000-0x0000000077D01000-memory.dmp

Filesize
1.1MB

Download
memory/3660-23246-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4324-23238-0x0000000077BE1000-0x0000000077D01000-memory.dmp

Filesize
1.1MB

Download
memory/4324-23239-0x00000000748D5000-0x00000000748D6000-memory.dmp

Filesize
4KB

Download
memory/4324-23240-0x0000000002F20000-0x0000000003989000-memory.dmp

Filesize
10.4MB

Download
memory/4324-23237-0x0000000002F20000-0x0000000003989000-memory.dmp

Filesize
10.4MB

Download