guloader | ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc

Analysis

max time kernel
128s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28-01-2025 03:16

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General

Target

ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe
Size

80KB
MD5

2516cd41cf33c90f70d3e2810bad211f
SHA1

f8a55a212828e0f426f60d53f530360e2abafc4f
SHA256

ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc
SHA512

6f19f9043dbd8af6c96104669f0810b3ce7100cdb787a930180601e8d93f6b13eae3a3f19c49acb973dcb146526f75bd31c9e95831a32ab410f47a9073ec8bf9
SSDEEP

768:P67EPltlNTNJ+MYNSQOTa72OP2ODIOdvhUdNBOQfvnUUwUl+V:P6OTNJ+MUSlajP2ODIsU5fvn5wUQV

Score

10^/10

guloader discovery downloader persistence

Malware Config

Signatures

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

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	ieinstal.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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Skrifts = "C:\\Users\\Admin\\AppData\\Local\\Temp\\DJVELSBIDDEN\\Ghostlike.exe"	ieinstal.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1680	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe
2400	ieinstal.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1680 set thread context of 2400	1680	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	82

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	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ieinstal.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1680	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1680	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 2400	1680	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	82
PID 1680 wrote to memory of 2400	1680	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	82
PID 1680 wrote to memory of 2400	1680	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	82
PID 1680 wrote to memory of 2400	1680	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	82

C:\Users\Admin\AppData\Local\Temp\ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe
"C:\Users\Admin\AppData\Local\Temp\ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe"
1⤵
- Checks QEMU agent 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:1680
- C:\Program Files (x86)\internet explorer\ieinstal.exe
  "C:\Users\Admin\AppData\Local\Temp\ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe"
  2⤵
  - Checks QEMU agent file
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2400

Network

MITRE ATT&CK Enterprise v15

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

Query Registry

T1012

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

memory/1680-2-0x00000000021D0000-0x00000000021E2000-memory.dmp

Filesize
72KB

Download
memory/1680-3-0x00000000776F1000-0x0000000077811000-memory.dmp

Filesize
1.1MB

Download
memory/1680-4-0x00000000776F1000-0x0000000077811000-memory.dmp

Filesize
1.1MB

Download
memory/1680-6-0x00000000021D0000-0x00000000021E2000-memory.dmp

Filesize
72KB

Download
memory/2400-5-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2400-7-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2400-8-0x00000000776F1000-0x0000000077811000-memory.dmp

Filesize
1.1MB

Download
memory/2400-10-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads