guloader | ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc

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-1-5-21-3063565911-2056067323-3330884624-1000\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
2068	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe
2860	ieinstal.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2068 set thread context of 2860	2068	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	30

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
2068	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2068	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2860	2068	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	30
PID 2068 wrote to memory of 2860	2068	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	30
PID 2068 wrote to memory of 2860	2068	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	30
PID 2068 wrote to memory of 2860	2068	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	30
PID 2068 wrote to memory of 2860	2068	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	30
PID 2068 wrote to memory of 2860	2068	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	30
PID 2068 wrote to memory of 2860	2068	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	30
PID 2068 wrote to memory of 2860	2068	ca7fcaad713c4f571f0f46f09dff8ce1d0b75ed80d3bd2aafdd816c6f98c9ebc.exe	30

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:2068
- 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:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2068-2-0x0000000000330000-0x0000000000342000-memory.dmp

Filesize
72KB

Download
memory/2068-3-0x0000000077371000-0x0000000077472000-memory.dmp

Filesize
1.0MB

Download
memory/2068-4-0x0000000077370000-0x0000000077519000-memory.dmp

Filesize
1.7MB

Download
memory/2068-7-0x0000000000330000-0x0000000000342000-memory.dmp

Filesize
72KB

Download
memory/2068-9-0x0000000000330000-0x0000000000342000-memory.dmp

Filesize
72KB

Download
memory/2860-5-0x00000000001D0000-0x00000000002D0000-memory.dmp

Filesize
1024KB

Download
memory/2860-6-0x0000000077370000-0x0000000077519000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads