guloader | 1eb25e230346fb5ff10dfd8daad216200205b958046fb2729b8666ba2f18f2a9

Analysis

max time kernel
102s
max time network
105s
platform
windows11-21h2_x64
resource
win11-20250619-en
resource tags

arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system
submitted
01/07/2025, 07:13

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General

Target
Procentdelene.exe
Size 870KB
Sample250701-h17bps1yby
SHA256 1eb25e230346fb5ff10dfd8daad216200205b958046fb2729b8666ba2f18f2a9
MD5 68786837fdc79d05d4d183f7e4dd1546
SHA1 a28c215c0c5c807f05e44063fbaf69526cf7f3b7
SHA512 24af354f735e24ced6c4fa83e72d7a10ea97fefb6b09201b5b2d91b2a5b97d5cace1c44624e06168a81672c68db0fdb0c41b40020beaf7e66967c73002bd0284
SSDEEP 24576:GFMMMMMMMMMMj9sbv93+MEySx9KNQ6SW/AJIoK:GFMMMMMMMMMMjY+MEycKm69/AU
MD5 SHA1 SHA512 SSDEEP

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
3188	Procentdelene.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3188	Procentdelene.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2348	5868	WerFault.exe	78

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

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3188	Procentdelene.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3188 wrote to memory of 5868	3188	Procentdelene.exe	78
PID 3188 wrote to memory of 5868	3188	Procentdelene.exe	78
PID 3188 wrote to memory of 5868	3188	Procentdelene.exe	78
PID 3188 wrote to memory of 5868	3188	Procentdelene.exe	78
PID 3188 wrote to memory of 5868	3188	Procentdelene.exe	78

C:\Users\Admin\AppData\Local\Temp\Procentdelene.exe
"C:\Users\Admin\AppData\Local\Temp\Procentdelene.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3188
- C:\Users\Admin\AppData\Local\Temp\Procentdelene.exe
  "C:\Users\Admin\AppData\Local\Temp\Procentdelene.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5868
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5868 -s 440
    3⤵
    - Program crash
    PID:2348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5868 -ip 5868
1⤵
PID:5476

Network

MITRE ATT&CK Enterprise v16

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

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsb70BC.tmp\System.dll
Size 11KB
SHA256 c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448
MD5 9625d5b1754bc4ff29281d415d27a0fd
SHA1 80e85afc5cccd4c0a3775edbb90595a1a59f5ce0
SHA512 dce52b640897c2e8dbfd0a1472d5377fa91fb9cf1aeff62604d014bccbe5b56af1378f173132abeb0edd18c225b9f8f5e3d3e72434aed946661e036c779f165b
SSDEEP 192:eX24sihno00Wfl97nH6BenXwWobpWBTtvShJ5omi7dJWjOlqSlS:D8QIl972eXqlWBFSt273YOlqz
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3188-25-0x00000000035B0000-0x00000000042F0000-memory.dmp

Download

memory/3188-26-0x0000000010004000-0x0000000010005000-memory.dmp

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memory/3188-27-0x00000000035B0000-0x00000000042F0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads