guloader | cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889

Analysis

max time kernel
149s
max time network
145s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
01/08/2026, 08:09

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General

Target
cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe
Size 447KB
Sample260801-j2jsga1dja
SHA256 cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889
MD5 19ff75be2db21319ad41eb100087f046
SHA1 6bd32a4812f05876fb5279393d7858dae6515e73
SHA512 9d886a523655a7c06262e35db07468ee245d2b49933f8322b38edfb627a407ebb1491e44fa92d71394f8419de70da99e9d429895d5204da977387ac97f7ec28f
SSDEEP 6144:eT4DtqvsmZEajninlk5v4RgGqohsGtiVssJ8szRdCVkeGkVqEsafxYjYmr/dt:eTLpZEEns6vOqOsVss6b0aqEsapYNdt
TLSH
T1B0A4024533A4E273C07D06718C2A8B632B36DC755BD16F1B3354B74E6DB22824A7BE26
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 2 IoCs

pid	Process
5796	cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe
5796	cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
5796	cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe
4320	cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5796 set thread context of 4320	5796	cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe	89

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\Forportens179.ini	cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe
File created	C:\Program Files (x86)\nellike\dermatophagus.lnk	cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.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	cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
5796	cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5796 wrote to memory of 4320	5796	cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe	89
PID 5796 wrote to memory of 4320	5796	cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe	89

C:\Users\Admin\AppData\Local\Temp\cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe
"C:\Users\Admin\AppData\Local\Temp\cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5796
- C:\Users\Admin\AppData\Local\Temp\cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe
  "C:\Users\Admin\AppData\Local\Temp\cbdff40bf525a8fdbb771e23e9da6463a380c7e6264236226a9909c8bc141889.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:4320

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\nsyB165.tmp\System.dll
Size 12KB
SHA256 7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5
MD5 564bb0373067e1785cba7e4c24aab4bf
SHA1 7c9416a01d821b10b2eef97b80899d24014d6fc1
SHA512 22c61a323cb9293d7ec5c7e7e60674d0e2f7b29d55be25eb3c128ea2cd7440a1400cee17c43896b996278007c0d247f331a9b8964e3a40a0eb1404a9596c4472
SSDEEP 192:nenY0qWTlt70IAj/lQ0sEWc/wtYbBH2aDybC7y+XBDIwL:n8+Qlt70Fj/lQRY/9VjjfL
TLSH
T1F6427D1193B089F2F590593805A67F2A6FBEAC5C27E44963CFE345853D702DFA47A243
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4320-15-0x0000000001770000-0x0000000003C57000-memory.dmp

Download

memory/4320-17-0x0000000000480000-0x0000000001766000-memory.dmp

Download

memory/4320-18-0x0000000001770000-0x0000000003C57000-memory.dmp

Download

memory/5796-13-0x00000000050B0000-0x0000000007597000-memory.dmp

Download

memory/5796-14-0x0000000073DB5000-0x0000000073DB6000-memory.dmp

Download

memory/5796-16-0x00000000050B0000-0x0000000007597000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads