guloader | d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7

Analysis

max time kernel
11s
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
07-11-2024 03:19

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.exe
Size

804KB
MD5

c56f440f15955f0cae85df17d5a52140
SHA1

3c5c933bf8b68b04f621a5c70c9562d06e857bbd
SHA256

d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7
SHA512

7b191331b52c99ab9bac9c12be29d59f7efb705d4af1efdee2d05b887143398e8442f11664ae4c4b6716ecff2a729a5496b04c6f9e3fbc97e211d2b50c86312c
SSDEEP

24576:qG+yqROz6skIpE2NVPl7LE8oy9jRKta3uja581CL:NMRnsn1NVt7L7o/ap

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:

d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.exe

pid	process
4272	d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.exe
4272	d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.exe

Drops file in Program Files directory 1 IoCs

Processes:

d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Common Files\customization.rom	d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.exe

Drops file in Windows directory 1 IoCs

Processes:

d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.exe

description ioc process

File opened for modification C:\Windows\resources\primy.ini d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.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	d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.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:

d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.exe

C:\Users\Admin\AppData\Local\Temp\d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.exe
"C:\Users\Admin\AppData\Local\Temp\d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:4272
- C:\Users\Admin\AppData\Local\Temp\d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.exe
  "C:\Users\Admin\AppData\Local\Temp\d539aa17bfa95bc25c81308a99a1c834cb28ad23f1ce8bc3715066471bd5d0f7.exe"
  2⤵
  PID:4724

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nsfAD48.tmp\System.dll

Filesize
12KB

MD5
192639861e3dc2dc5c08bb8f8c7260d5

SHA1
58d30e460609e22fa0098bc27d928b689ef9af78

SHA256
23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6

SHA512
6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc

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

Filesize
33B

MD5
76d9175a3db7407eb0bfc3c07ddcd9d2

SHA1
72071127e9a44935cb02650ed715ccaf6a8f8418

SHA256
1f7119996dd17af05bf05e497104715bbbc3909676afa4329fbd59502be1a1a5

SHA512
5032dab71e70a4bd1dad2f5cf9380e0097be7993bc46886fed6e4bdd8781f2b10d31338d90d0dc5804665bda2cbfe93f1172250e1a8ab7c9118baf9f156e3c69

Download Submit
memory/4272-23237-0x0000000002F20000-0x0000000006002000-memory.dmp

Filesize
48.9MB

Download
memory/4272-23238-0x0000000002F20000-0x0000000006002000-memory.dmp

Filesize
48.9MB

Download
memory/4272-23239-0x0000000076ED1000-0x0000000076FF1000-memory.dmp

Filesize
1.1MB

Download
memory/4272-23240-0x0000000073BC5000-0x0000000073BC6000-memory.dmp

Filesize
4KB

Download
memory/4272-23242-0x0000000002F20000-0x0000000006002000-memory.dmp

Filesize
48.9MB

Download
memory/4724-23241-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4724-23243-0x0000000001660000-0x0000000004742000-memory.dmp

Filesize
48.9MB

Download
memory/4724-23244-0x0000000001660000-0x0000000004742000-memory.dmp

Filesize
48.9MB

Download
memory/4724-23245-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download