guloader | 8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
10/08/2026, 14:09

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General

Target
8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe
Size 435KB
Sample260810-rf77yaar4y
SHA256 8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3
MD5 959b979590021ee9c0e1e7ccb610aa4c
SHA1 5664db0dda33ad5cd12d7579ae53074b884cd343
SHA512 784fc9195c9a2501a6a7e39839fe12571606cda61975e5c90cb79dd7d1d441558fad4ff0d512aa54c3d4d332de7fc59b458c9ba9741aae3627abd66306d803ae
SSDEEP 6144:CTA8oPSCIjT6W7scfdwQf4iTuDf2eBN1UglPPG2QYnu+jR1Z+:CTA6TPIGwJieBwgduAO
TLSH
T18F94BE23F654C986D85023F04C7FD86A22676D7458A3560F3DAAF33D6EB3292F11724A
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
1864	8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1864	8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe
4256	8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\holosteric.gif	8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\sdmefulde\selvangivelsesblanket.ini	8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.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	8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1864	8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1864 wrote to memory of 2484	1864	8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe	86
PID 1864 wrote to memory of 4256	1864	8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe	87
PID 1864 wrote to memory of 4256	1864	8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe	87
PID 4256 wrote to memory of 2912	4256	8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe	88

C:\Users\Admin\AppData\Local\Temp\8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe
"C:\Users\Admin\AppData\Local\Temp\8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.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:1864
- C:\Users\Admin\AppData\Local\Temp\8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe
  "C:\Users\Admin\AppData\Local\Temp\8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe"
  2⤵
  PID:2484
- C:\Users\Admin\AppData\Local\Temp\8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe
  "C:\Users\Admin\AppData\Local\Temp\8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4256
- - C:\Users\Admin\AppData\Local\Temp\8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe
    "C:\Users\Admin\AppData\Local\Temp\8698a2bb4ff21a5bb6c6f7cc43dbaf13827cb8248014377013a0f3daaace67c3.exe"
    3⤵
    PID:2912

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\nsx6444.tmp\System.dll
Size 12KB
SHA256 8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
MD5 9b38a1b07a0ebc5c7e59e63346ecc2db
SHA1 97332a2ffcf12a3e3f27e7c05213b5d7faa13735
SHA512 26e77f8e10f6d8693c92bd036b53a3f6e0c523090ef8dfe479815f556ecd2b57fc90ce9f7cceebe70460d464decb27ad1fe240819fd56997764e96506b6a439c
SSDEEP 192:kjHcQ0qWTlt7wi5Aj/lM0sEWD/wtYbBjpNQybC7y+XZ40QPi:U/Qlt7wiij/lMRv/9V4b4r
TLSH
T1E8427C1297B089F2F151093419667F2A6FBEAC5D17F405A3CFE304C63D212CB9839243
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1864-10-0x0000000002950000-0x00000000055CB000-memory.dmp

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memory/1864-11-0x00000000742E5000-0x00000000742E6000-memory.dmp

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memory/1864-12-0x0000000002950000-0x00000000055CB000-memory.dmp

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memory/4256-19-0x00000000004A0000-0x00000000016F4000-memory.dmp

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memory/4256-20-0x0000000001700000-0x000000000437B000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads