guloader | e8384166957076efd104eaf0443b1cda502c5d6e3bdc3f0ea4764b5adb77ee16

Analysis

max time kernel
149s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-11-2024 19:56

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General

Target

Original copies of shipment docs.exe
Size

92KB
MD5

8b96af7d76b487cea6aa04f565b8cb9f
SHA1

3e904fec3e82c9f01ccc64fbdcde35d306c6147f
SHA256

49559dd2c1d9b0841f3384f3080013f8d644760d45ab7cd4fb4928bb2b91f354
SHA512

786140d030095ce5c0865c21e049c8572e3ee5ec78eadebb15611a4b0f59bac995a306f14e85cd30506cd7661819d3d6a3fe43e4ac714fceb9e0c0991f171790
SSDEEP

768:DUN8RIPdfSAxqFpdyNmqsNjl+mF2AdJVmyzXUsRVVWmZjrFLaH/hQ:ANJEjd+bAlJFvNzksRCQjhGK

Score

10^/10

guloader discovery downloader

Malware Config

Extracted

Family

guloader

https://drive.google.com/uc?export=download&id=1eS7ZjBeF8dblWu1ZZ1U1CF4vescWndHE

xor.base64

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	Original copies of shipment docs.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	Original copies of shipment docs.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
18	drive.google.com
19	drive.google.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3384	Original copies of shipment docs.exe
1896	Original copies of shipment docs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3384 set thread context of 1896	3384	Original copies of shipment docs.exe	91

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	Original copies of shipment docs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Original copies of shipment docs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3384	Original copies of shipment docs.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3384	Original copies of shipment docs.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3384 wrote to memory of 1896	3384	Original copies of shipment docs.exe	91
PID 3384 wrote to memory of 1896	3384	Original copies of shipment docs.exe	91
PID 3384 wrote to memory of 1896	3384	Original copies of shipment docs.exe	91
PID 3384 wrote to memory of 1896	3384	Original copies of shipment docs.exe	91

C:\Users\Admin\AppData\Local\Temp\Original copies of shipment docs.exe
"C:\Users\Admin\AppData\Local\Temp\Original copies of shipment docs.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:3384
- C:\Users\Admin\AppData\Local\Temp\Original copies of shipment docs.exe
  "C:\Users\Admin\AppData\Local\Temp\Original copies of shipment docs.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:1896

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1896-5-0x0000000000400000-0x000000000055D000-memory.dmp

Filesize
1.4MB

Download
memory/1896-9-0x0000000077081000-0x00000000771A1000-memory.dmp

Filesize
1.1MB

Download
memory/1896-8-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/1896-19-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/1896-20-0x0000000000400000-0x000000000055D000-memory.dmp

Filesize
1.4MB

Download
memory/3384-2-0x00000000022B0000-0x00000000022BC000-memory.dmp

Filesize
48KB

Download
memory/3384-3-0x0000000077081000-0x00000000771A1000-memory.dmp

Filesize
1.1MB

Download
memory/3384-4-0x0000000077081000-0x00000000771A1000-memory.dmp

Filesize
1.1MB

Download
memory/3384-7-0x00000000022B0000-0x00000000022BC000-memory.dmp

Filesize
48KB

Download