guloader | 26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb

Analysis

max time kernel
149s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
31/08/2026, 02:21

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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
4764	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-1-5-21-668679576-120646659-2289335452-1000\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
4764	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
4000	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

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4764	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4764 wrote to memory of 3448	4764	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe	88
PID 4764 wrote to memory of 4000	4764	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe	89
PID 4764 wrote to memory of 4000	4764	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe	89
PID 4000 wrote to memory of 4860	4000	26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe	92

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
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4764
- C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
  "C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe"
  2⤵
  PID:3448
- 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:4000
- - C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
    "C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe"
    3⤵
    PID:4860

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

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Downloads

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nse4246.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 9c361c979026a9340a06b1733bb0622ebd81fa3cc25593a768c331ae33c5cda8
MD5 68f006a91759f467201af64645b181db
SHA1 d76bc12ce1090db8e907316ded887a34c9e83fbd
SHA512 fbcd0b59e15f5a9c0c382610a9a5a7e2b0e7a2fed27a2c3b0085a702c961dae246fd86990b27dce661aac579655ce100ab68e9cc3b1aa8337e7b775c7b28093f
TLSH
T118112B264ED51720E3F6DB7281E92A29EB717C56FB859F4D0050904C247BF40EC65F2B
MD5 SHA1 SHA512 TLSH

Submit Download

memory/4000-240-0x0000000077238000-0x0000000077239000-memory.dmp

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memory/4000-242-0x0000000077255000-0x0000000077256000-memory.dmp

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memory/4000-241-0x00000000772D9000-0x00000000772DA000-memory.dmp

Download

memory/4000-243-0x00000000016D0000-0x000000000243E000-memory.dmp

Download

memory/4000-244-0x0000000000470000-0x00000000016C4000-memory.dmp

Download

memory/4000-245-0x00000000772D9000-0x00000000772DA000-memory.dmp

Download

memory/4764-237-0x0000000002A50000-0x00000000037BE000-memory.dmp

Download

memory/4764-238-0x0000000073F35000-0x0000000073F36000-memory.dmp

Download

memory/4764-239-0x0000000002A50000-0x00000000037BE000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads