guloader | d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1

Analysis

max time kernel
148s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260629-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
03/07/2026, 21:08

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General

Target
d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe
Size 1010KB
Sample260703-zzbbbacv4l
SHA256 d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1
MD5 7ce9d9629fcb36a1015290badf3fb4d4
SHA1 37c0a6923e420e970bcf18b8c6e118f8a3ed9ed1
SHA512 9e86fabda1c7ab7d465e9c1f3aace652c2629f06656f2175b1f07bff4d618442d49480dd0322cbc1eacbc543ca3251e6cf0184df00a255ded64061a8f2584a95
SSDEEP 24576:khDLUKUORadp/XqGXeo7D8K5M6LaPZYnWpi9Pm/YGX2ci8Pe:2DLUKUORS/qGXeSSuWpwPm/tX2XKe
TLSH
T1362502A1F394C8D9E8F90D71543799222437BCDEB8A1149E76EB366FE573302026790B
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
4384	d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4384	d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe
6076	d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\collybist.pat	d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\sprllede\Underpinnings205.ini	d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe
File opened for modification	C:\Windows\Disulphuret228\unwarming.tid	d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.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	d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4384	d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4384 wrote to memory of 6076	4384	d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe	88
PID 4384 wrote to memory of 6076	4384	d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe	88

C:\Users\Admin\AppData\Local\Temp\d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe
"C:\Users\Admin\AppData\Local\Temp\d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4384
- C:\Users\Admin\AppData\Local\Temp\d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe
  "C:\Users\Admin\AppData\Local\Temp\d1e75f4de10a7e3d6c59bd425c671d806b2d081c67f07f4c8602b2cb99c6a9a1.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:6076

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:3840

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\nse3FE0.tmp\System.dll
Size 11KB
SHA256 75ed40311875312617d6711baed0be29fcaee71031ca27a8d308a72b15a51e49
MD5 a436db0c473a087eb61ff5c53c34ba27
SHA1 65ea67e424e75f5065132b539c8b2eda88aa0506
SHA512 908f46a855480af6eacb2fb64de0e60b1e04bbb10b23992e2cf38a4cbebdcd7d3928c4c022d7ad9f7479265a8f426b93eef580afec95570e654c360d62f5e08d
SSDEEP 192:aVL7iZJX76BisO7+UZEw+Rl59pV8ghsVJ39dx8T:d7NsOpZsfLMJ39e
TLSH
T1BE324B19135442F3E5D5883D186A3ABB1F28762196E08F83DFB36881FF386D56D39312
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4384-13-0x0000000010004000-0x0000000010005000-memory.dmp

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memory/6076-14-0x0000000001770000-0x0000000006DE8000-memory.dmp

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memory/6076-15-0x000000007775F000-0x0000000077760000-memory.dmp

Download

memory/6076-16-0x00000000777E5000-0x00000000777E6000-memory.dmp

Download

memory/6076-17-0x0000000000480000-0x0000000001766000-memory.dmp

Download

memory/6076-18-0x00000000777E5000-0x00000000777E6000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads