guloader | 362d33aa58d25ba8c59ac3d3def342d1ab5c1f38cf51a5880aaba4f07a04cb28

Analysis

max time kernel
149s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
09/09/2026, 00:15

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General

Target
_3719032_Inv0ice_Receipt.exe
Size 472KB
Sample260909-akbabsab74
SHA256 362d33aa58d25ba8c59ac3d3def342d1ab5c1f38cf51a5880aaba4f07a04cb28
MD5 84a24a81863b83c0f240812368f0b99b
SHA1 9d77c0e6aae27fe5fdb5b30363ec4a104e1d3387
SHA512 7edeb15d4079cb19d472d2132280594094b18702aea60fd4499ec3d495a45215f426efbb20d4317f3fc7ffd48d64add450a614e4aa950dfefaecb98d63924cf6
SSDEEP 1536:D+IJ2iRB4aZnKZV4MJW0FijxOMr2rS78xSBAgljPOwcAdcQErj4rgOTOYrT3gL69:DfMaZnzGJj4rSYyS8wwydD
TLSH
T125A4E7173694D1EEC56F88B1CE86A3CD826B7C7DBF8151037FC2334E9739442AA55226
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery downloader guloader persistence

Malware Config

Extracted

Family

guloader

https://ckl6767.com/il/middlemay_nqDYZjfnN177.bin

xor.base64

Signatures

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

Checks QEMU agent state file 2 TTPs 4 IoCs

Checks state file used by QEMU agent, possibly to detect virtualization.

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
File opened (read-only)	C:\ProgramData\qemu-ga\qga.state	_3719032_Inv0ice_Receipt.exe
File opened (read-only)	C:\ProgramData\qemu-ga\qga.state	RegAsm.exe
File opened (read-only)	C:\ProgramData\qemu-ga\qga.state	filename1.exe
File opened (read-only)	C:\ProgramData\qemu-ga\qga.state	RegAsm.exe

Executes dropped EXE 1 IoCs

pid	Process
936	filename1.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1079202589-886135813-2527035092-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Startup key = "C:\\Users\\Admin\\subfolder1\\filename1.exe"	RegAsm.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1079202589-886135813-2527035092-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Startup key = "C:\\Users\\Admin\\subfolder1\\filename1.exe"	RegAsm.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
5536	_3719032_Inv0ice_Receipt.exe
200	RegAsm.exe
936	filename1.exe
3676	RegAsm.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5536 set thread context of 200	5536	_3719032_Inv0ice_Receipt.exe	89
PID 936 set thread context of 3676	936	filename1.exe	94

System Location Discovery: System Language Discovery 1 TTPs 4 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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	filename1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	_3719032_Inv0ice_Receipt.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
5536	_3719032_Inv0ice_Receipt.exe
936	filename1.exe
936	filename1.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5536	_3719032_Inv0ice_Receipt.exe
936	filename1.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5536 wrote to memory of 200	5536	_3719032_Inv0ice_Receipt.exe	89
PID 5536 wrote to memory of 200	5536	_3719032_Inv0ice_Receipt.exe	89
PID 936 wrote to memory of 1620	936	filename1.exe	93
PID 936 wrote to memory of 3676	936	filename1.exe	94
PID 936 wrote to memory of 3676	936	filename1.exe	94

C:\Users\Admin\AppData\Local\Temp\_3719032_Inv0ice_Receipt.exe
"C:\Users\Admin\AppData\Local\Temp\_3719032_Inv0ice_Receipt.exe"
1⤵
- Checks QEMU agent state file
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5536
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Users\Admin\AppData\Local\Temp\_3719032_Inv0ice_Receipt.exe"
  2⤵
  - Checks QEMU agent state file
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:200

C:\Users\Admin\subfolder1\filename1.exe
C:\Users\Admin\subfolder1\filename1.exe
1⤵
- Checks QEMU agent state file
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:936
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  C:\Users\Admin\subfolder1\filename1.exe
  2⤵
  PID:1620
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  C:\Users\Admin\subfolder1\filename1.exe
  2⤵
  - Checks QEMU agent state file
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:3676

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

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

filename1.exe

Path C:\Users\Admin\subfolder1\filename1.exe
Size 472KB
SHA256 362d33aa58d25ba8c59ac3d3def342d1ab5c1f38cf51a5880aaba4f07a04cb28
MD5 84a24a81863b83c0f240812368f0b99b
SHA1 9d77c0e6aae27fe5fdb5b30363ec4a104e1d3387
SHA512 7edeb15d4079cb19d472d2132280594094b18702aea60fd4499ec3d495a45215f426efbb20d4317f3fc7ffd48d64add450a614e4aa950dfefaecb98d63924cf6
SSDEEP 1536:D+IJ2iRB4aZnKZV4MJW0FijxOMr2rS78xSBAgljPOwcAdcQErj4rgOTOYrT3gL69:DfMaZnzGJj4rSYyS8wwydD
TLSH
T125A4E7173694D1EEC56F88B1CE86A3CD826B7C7DBF8151037FC2334E9739442AA55226
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/200-3-0x0000000000F30000-0x0000000001030000-memory.dmp

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memory/200-12-0x0000000000F30000-0x0000000001030000-memory.dmp

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memory/936-9-0x0000000002180000-0x000000000218E000-memory.dmp

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memory/936-13-0x0000000002180000-0x000000000218E000-memory.dmp

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memory/936-16-0x0000000002180000-0x000000000218E000-memory.dmp

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memory/3676-11-0x0000000001120000-0x0000000001220000-memory.dmp

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memory/3676-14-0x0000000001120000-0x0000000001220000-memory.dmp

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memory/5536-2-0x0000000002310000-0x000000000231E000-memory.dmp

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memory/5536-10-0x0000000002310000-0x000000000231E000-memory.dmp

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memory/5536-15-0x0000000002310000-0x000000000231E000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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