guloader | 26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb

Analysis

max time kernel
150s
max time network
144s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
31/08/2026, 02:21

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
Size 218KB
Sample260831-ctfyaatdnf
SHA256 26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb
MD5 44ddc80c714f91959bcaa1aeb3cfe1d5
SHA1 7a5ce656b36a081d0f93d5add93a9c8ddc329abf
SHA512 33d7d52c606db4f42e9d67a67e1ac248b123c71be6c55ac97f5dbaf755e0b969b8edf619c8a4b7afcd9a951c3b8e580c93f4a90380467cad48300d8186ab6f1e
SSDEEP 6144:LT4DtAX5NIc71RWI89tgqNw2Tn1LJ3kcMGuzIz39zl:LT35/z89lJCGl31l
TLSH
T1FB2412A07769D453E7C382730875A77A2FF9A1BA66249F076F023E0CBD92782550F312
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery downloader guloader persistence

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
1308	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Windows\CurrentVersion\Run\Startup key = "C:\\Users\\Admin\\AppData\\Local\\Temp\\subfolder1\\Coverlid.exe"	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1308	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
5432	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.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	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3ADD1653-EB32-4cb0-BBD7-DFA0ABB5ACCA}\Instance\	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1308	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1308 wrote to memory of 3620	1308	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe	90
PID 1308 wrote to memory of 5432	1308	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe	91
PID 1308 wrote to memory of 5432	1308	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe	91
PID 5432 wrote to memory of 5588	5432	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe	93

C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
"C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1308
- C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
  "C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe"
  2⤵
  PID:3620
- C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
  "C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5432
- - C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
    "C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe"
    3⤵
    PID:5588

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsb863F.tmp\System.dll
Size 12KB
SHA256 acf90ab6f4edc687e94aaf604d05e16e6cfb5e35873783b50c66f307a35c6506
MD5 6e55a6e7c3fdbd244042eb15cb1ec739
SHA1 070ea80e2192abc42f358d47b276990b5fa285a9
SHA512 2d504b74da38edc967e3859733a2a9cacd885db82f0ca69bfb66872e882707314c54238344d45945dc98bae85772aceef71a741787922d640627d3c8ae8f1c35
SSDEEP 192:MenY0qWTlt70IAj/lQ0sEWc/wtYbBH2aDybC7y+XBaIwL:M8+Qlt70Fj/lQRY/9VjjgL
TLSH
T1BE428D1193B089F2F590593805A67F2A6FBEAC5C27E44A63CFE345853D702DFA47A243
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Kilometrical71.lnk

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Kilometrical71.lnk
Size 1002B
SHA256 9b149cc82b49d70cf0be52ac0b467a28be1b8db49d5ce614a6e299a4a44c32df
MD5 22cf4698c3413b7f95f1259f0dbdec2c
SHA1 fa4bb9f01ad529bbaf4da632df71c0dd3fc5eb63
SHA512 f39486fa1c8ba476b54fe4363f08f2d1ac23f6cdd02ab3e9099705883a39033b4c25f852e95d12c5e62aa29d35eed1229d8da01c1862467c6502905c17bed1ad
TLSH
T18C112B194ED11B20E3FA8B7280E93A29DF717C57EB899F4D0050954D247AB50ECA5E2F
MD5 SHA1 SHA512 TLSH

Submit Download

memory/1308-462-0x0000000003590000-0x00000000042FE000-memory.dmp

Download

memory/1308-463-0x0000000073935000-0x0000000073936000-memory.dmp

Download

memory/5432-464-0x0000000001760000-0x00000000024CE000-memory.dmp

Download

memory/5432-466-0x0000000076FFD000-0x0000000076FFE000-memory.dmp

Download

memory/5432-465-0x000000007703F000-0x0000000077040000-memory.dmp

Download

memory/5432-467-0x00000000770C5000-0x00000000770C6000-memory.dmp

Download

memory/5432-468-0x0000000001760000-0x00000000024CE000-memory.dmp

Download

memory/5432-469-0x0000000000470000-0x0000000001756000-memory.dmp

Download

memory/5432-470-0x00000000770C5000-0x00000000770C6000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads