guloader | 1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a

Analysis

max time kernel
150s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
10/08/2026, 14:05

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General

Target
1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe
Size 403KB
Sample260810-rebscaaq71
SHA256 1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a
MD5 a16767a43943bc4c2e25d69ca4ca68b7
SHA1 bed104a086f69d9fd7b69f6b7f1797b18a26c862
SHA512 95d97abd292af4426c0ca732ebe5291447af69e99c129e6aed29b3244f0acb9d2f8b4b99bba2fd82eb10130eaf79d56861caa360bf9b5d3ac3dfbc49586890e4
SSDEEP 6144:omGIhCrl0WKxHId8CWoWZGipPIR3oRsu22KqEWriKUofF9a5q56zX:Pm0NxodvEYuu3o82KoriKUC8qE
TLSH
T1DB94CF83FA80D6AAFC3D4875D9A352700B72AEB596854F4353D879123FB22C0753B52E
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
4432	1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4432	1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe
6548	1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.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	1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4432	1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4432 wrote to memory of 1168	4432	1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe	91
PID 4432 wrote to memory of 6548	4432	1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe	92
PID 4432 wrote to memory of 6548	4432	1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe	92
PID 6548 wrote to memory of 3092	6548	1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe	93

C:\Users\Admin\AppData\Local\Temp\1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe
"C:\Users\Admin\AppData\Local\Temp\1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4432
- C:\Users\Admin\AppData\Local\Temp\1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe
  "C:\Users\Admin\AppData\Local\Temp\1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe"
  2⤵
  PID:1168
- C:\Users\Admin\AppData\Local\Temp\1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe
  "C:\Users\Admin\AppData\Local\Temp\1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:6548
- - C:\Users\Admin\AppData\Local\Temp\1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe
    "C:\Users\Admin\AppData\Local\Temp\1f699db45e66e2a2d404231be31e51d3a6d390a73beaeac4401de6866397dc4a.exe"
    3⤵
    PID:3092

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\nsk3DF.tmp\System.dll
Size 12KB
SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
MD5 0d7ad4f45dc6f5aa87f606d0331c6901
SHA1 48df0911f0484cbe2a8cdd5362140b63c41ee457
SHA512 c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9
SSDEEP 192:1enY0LWelt70elWjvfstJcVtwtYbjnIOg5AaDnbC7ypXhtIj:18PJlt70esj0Mt9vn6ay6
TLSH
T1BA428E12977049F2F1A0183C10A67F265FBEAE5C1BE445A39FE380867D652DF9436343
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4432-12-0x00000000034B0000-0x0000000005270000-memory.dmp

Download

memory/4432-13-0x0000000074285000-0x0000000074286000-memory.dmp

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memory/4432-15-0x00000000034B0000-0x0000000005270000-memory.dmp

Download

memory/6548-14-0x0000000001790000-0x0000000003550000-memory.dmp

Download

memory/6548-16-0x00000000004A0000-0x0000000001786000-memory.dmp

Download

memory/6548-17-0x0000000001790000-0x0000000003550000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads