guloader | 6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e

Analysis

max time kernel
148s
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
11-12-2024 02:45

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General

Target

6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe
Size

990KB
MD5

38499dde4bd6169ef983fc23eebc2642
SHA1

80c78c8f8b498528b4aae2b569a5656b17d98993
SHA256

6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e
SHA512

ac9f03ce93401afc992fdfa7cf06a949539ed96abd8d0844b8a1c7acbc43c70e1976c3762d755ef8b69b67440c7b256b82a8f117723e07401e3e84efb61ce346
SSDEEP

24576:9jwKCN1tSd7mEf4nPTlLUIJ2IAdQquWVbs2XpvAv:V1C3ocEMrl+IQQq5xs2Cv

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

pid	Process
2468	6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe
2468	6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs

Web Service

T1102

flow	ioc
4	drive.google.com
5	drive.google.com
32	drive.google.com
45	drive.google.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2468	6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe
4280	6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2468 set thread context of 4280	2468	6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe	84

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	6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2468	6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2468 wrote to memory of 4280	2468	6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe	84
PID 2468 wrote to memory of 4280	2468	6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe	84
PID 2468 wrote to memory of 4280	2468	6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe	84
PID 2468 wrote to memory of 4280	2468	6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe	84
PID 2468 wrote to memory of 4280	2468	6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe	84

C:\Users\Admin\AppData\Local\Temp\6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe
"C:\Users\Admin\AppData\Local\Temp\6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2468
- C:\Users\Admin\AppData\Local\Temp\6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe
  "C:\Users\Admin\AppData\Local\Temp\6f45bd0535f4654ea024f6336cdeecbc44272c903353963a7d7a0f8d8e74a51e.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:4280

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

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsu79A6.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
memory/2468-13-0x00000000032A0000-0x000000000480A000-memory.dmp

Filesize
21.4MB

Download
memory/2468-14-0x0000000077E41000-0x0000000077F61000-memory.dmp

Filesize
1.1MB

Download
memory/2468-15-0x0000000074B35000-0x0000000074B36000-memory.dmp

Filesize
4KB

Download
memory/2468-16-0x00000000032A0000-0x000000000480A000-memory.dmp

Filesize
21.4MB

Download
memory/4280-17-0x00000000016E0000-0x0000000002C4A000-memory.dmp

Filesize
21.4MB

Download
memory/4280-18-0x0000000077EC8000-0x0000000077EC9000-memory.dmp

Filesize
4KB

Download
memory/4280-19-0x0000000077EE5000-0x0000000077EE6000-memory.dmp

Filesize
4KB

Download
memory/4280-20-0x00000000016E0000-0x0000000002C4A000-memory.dmp

Filesize
21.4MB

Download
memory/4280-22-0x0000000077E41000-0x0000000077F61000-memory.dmp

Filesize
1.1MB

Download
memory/4280-21-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download