guloader | 154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1

Analysis

max time kernel
165s
max time network
167s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
20/07/2026, 11:41

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General

Target
154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe
Size 268KB
Sample260720-ntfs3agx7m
SHA256 154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1
MD5 a5358ed960acf4aba4389ad897abe801
SHA1 cde55c084d48fd6a870b4937a65bf4fdafad1d38
SHA512 34271cde936b9d5bce6627761c64d221c626212c4c3aaf2f0b174ffb8c95fdb65bf4da6728292f17824e70b458c1bbc6f698200dafe4792958e0a17b322e45f9
SSDEEP 6144:tQ606xEXA9HXPGPkHLH8pksoX3hmFgaRgt8iqmKzcz:UXA9H/5j8p+nhmFjRAkzo
TLSH
T1794402017760C457DBA14B326A7C47BB9FBE9C4755006B0B17C1BFAB3E73A92960B212
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery downloader guloader

Malware Config

Signatures

Family: Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Loads dropped DLL 1 IoCs

pid	Process
4756	154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4756	154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe
796	154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.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 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	154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4756	154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4756 wrote to memory of 4776	4756	154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe	90
PID 4756 wrote to memory of 796	4756	154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe	91
PID 4756 wrote to memory of 796	4756	154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe	91
PID 796 wrote to memory of 5004	796	154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe	92

C:\Users\Admin\AppData\Local\Temp\154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe
"C:\Users\Admin\AppData\Local\Temp\154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Users\Admin\AppData\Local\Temp\154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe
  "C:\Users\Admin\AppData\Local\Temp\154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe"
  2⤵
  PID:4776
- C:\Users\Admin\AppData\Local\Temp\154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe
  "C:\Users\Admin\AppData\Local\Temp\154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:796
- - C:\Users\Admin\AppData\Local\Temp\154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe
    "C:\Users\Admin\AppData\Local\Temp\154c4f56d58b5db3a4e1052815808fb7c7a27d80d6bfaa2c892d3b9c1d0101d1.exe"
    3⤵
    PID:5004

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\nspB434.tmp\System.dll
Size 11KB
SHA256 c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448
MD5 9625d5b1754bc4ff29281d415d27a0fd
SHA1 80e85afc5cccd4c0a3775edbb90595a1a59f5ce0
SHA512 dce52b640897c2e8dbfd0a1472d5377fa91fb9cf1aeff62604d014bccbe5b56af1378f173132abeb0edd18c225b9f8f5e3d3e72434aed946661e036c779f165b
SSDEEP 192:eX24sihno00Wfl97nH6BenXwWobpWBTtvShJ5omi7dJWjOlqSlS:D8QIl972eXqlWBFSt273YOlqz
TLSH
T1BD325D06235081F3E1914138846B3E175F6A15069BF58E97DFD38646BE30BE7BD79503
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/796-12-0x0000000001760000-0x000000000492A000-memory.dmp

Download

memory/796-13-0x0000000000470000-0x0000000001756000-memory.dmp

Download

memory/796-14-0x0000000001760000-0x000000000492A000-memory.dmp

Download

memory/4756-10-0x0000000005800000-0x00000000089CA000-memory.dmp

Download

memory/4756-11-0x0000000010004000-0x0000000010005000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads