guloader | 1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23

Analysis

max time kernel
149s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
27/07/2026, 01:52

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General

Target
1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe
Size 395KB
Sample260727-cajj3athlb
SHA256 1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23
MD5 8561d43ac49e66be78afd688f68d0048
SHA1 4c6a30b5cc364794adfc784ccace3b3554aaf0b0
SHA512 ded941a295fba363d35919b89b30738e3dcfe02e5cb3303f96efba56fb060538f25b0b556bd57d3649498b1a80509ecd5ed0f056255509a5faf46a9acbe3ffbe
SSDEEP 6144:nwq3NpGrARcVC0Fw5NQqVkCrpgF2d33IxSLoMn36/3ACxtcEmb:nzSicVXoNSCrp0OxsGyx98
TLSH
T17A8412027AC2C047CA9609B00CB1FB73E6A97D5C69568743B792BF0CF672655A84D3B3
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
5532	1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe

Contacts third-party web service commonly abused for C2 1 TTPs 3 IoCs

Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

Web Service

T1102

flow	ioc
1	drive.google.com
7	drive.google.com
12	drive.google.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
5532	1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe
5948	1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\ugengldtes\undiscriminative.lnk	1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe
File opened for modification	C:\Program Files (x86)\Common Files\Interpolymer.ini	1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\Unalloyed\belastningernes.ini	1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.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	1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
5532	1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5532 wrote to memory of 2396	5532	1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe	90
PID 5532 wrote to memory of 5948	5532	1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe	91
PID 5532 wrote to memory of 5948	5532	1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe	91
PID 5948 wrote to memory of 5040	5948	1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe	92

C:\Users\Admin\AppData\Local\Temp\1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe
"C:\Users\Admin\AppData\Local\Temp\1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.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:5532
- C:\Users\Admin\AppData\Local\Temp\1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe
  "C:\Users\Admin\AppData\Local\Temp\1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe"
  2⤵
  PID:2396
- C:\Users\Admin\AppData\Local\Temp\1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe
  "C:\Users\Admin\AppData\Local\Temp\1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5948
- - C:\Users\Admin\AppData\Local\Temp\1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe
    "C:\Users\Admin\AppData\Local\Temp\1dcab56a0998fc7228c2ec8ef6a4e9721522a9fa94a2665ed12d63d721db5b23.exe"
    3⤵
    PID:5040

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

Web Service

T1102

Exfiltration

Impact

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Downloads

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsd31F6.tmp\System.dll
Size 11KB
SHA256 bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb
MD5 17ed1c86bd67e78ade4712be48a7d2bd
SHA1 1cc9fe86d6d6030b4dae45ecddce5907991c01a0
SHA512 0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5
SSDEEP 192:eY24sihno00Wfl97nH6T2enXwWobpWBTU4VtHT7dmN35Ol+Sl:E8QIl975eXqlWBrz7YLOl+
TLSH
T1E3325C12135081F3E4918138C86B3A276B6A15029BF98E57DFD39546BE31BE3BD7D603
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/5532-24-0x00000000057E0000-0x000000000788D000-memory.dmp

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memory/5532-25-0x0000000010004000-0x0000000010005000-memory.dmp

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memory/5948-26-0x0000000001760000-0x000000000380D000-memory.dmp

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memory/5948-27-0x0000000000470000-0x0000000001756000-memory.dmp

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memory/5948-28-0x0000000001760000-0x000000000380D000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads