guloader | e8384166957076efd104eaf0443b1cda502c5d6e3bdc3f0ea4764b5adb77ee16

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

C2

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

Processes:

Original copies of shipment docs.exeOriginal copies of shipment docs.exe

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

Processes:

flow ioc

3 drive.google.com
5 drive.google.com
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

Original copies of shipment docs.exeOriginal copies of shipment docs.exe

pid process

2236 Original copies of shipment docs.exe
2784 Original copies of shipment docs.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

Original copies of shipment docs.exe

description pid process target process

PID 2236 set thread context of 2784 2236 Original copies of shipment docs.exe Original copies of shipment docs.exe

flow	ioc
3	drive.google.com
5	drive.google.com

pid	process
2236	Original copies of shipment docs.exe
2784	Original copies of shipment docs.exe

description	pid	process	target process
PID 2236 set thread context of 2784	2236	Original copies of shipment docs.exe	Original copies of shipment docs.exe

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

Processes:

Original copies of shipment docs.exeOriginal copies of shipment docs.exe

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

Processes:

Original copies of shipment docs.exe

pid process

2236 Original copies of shipment docs.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Original copies of shipment docs.exe

pid process

2236 Original copies of shipment docs.exe

pid	process
2236	Original copies of shipment docs.exe

pid	process
2236	Original copies of shipment docs.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

Original copies of shipment docs.exe

description	pid	process	target process
PID 2236 wrote to memory of 2784	2236	Original copies of shipment docs.exe	Original copies of shipment docs.exe
PID 2236 wrote to memory of 2784	2236	Original copies of shipment docs.exe	Original copies of shipment docs.exe
PID 2236 wrote to memory of 2784	2236	Original copies of shipment docs.exe	Original copies of shipment docs.exe
PID 2236 wrote to memory of 2784	2236	Original copies of shipment docs.exe	Original copies of shipment docs.exe
PID 2236 wrote to memory of 2784	2236	Original copies of shipment docs.exe	Original copies of shipment docs.exe

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:2236
- 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:2784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

memory/2236-2-0x00000000002B0000-0x00000000002BC000-memory.dmp

Filesize
48KB

Download
memory/2236-3-0x0000000076F60000-0x0000000077036000-memory.dmp

Filesize
856KB

Download
memory/2236-4-0x0000000076D71000-0x0000000076E72000-memory.dmp

Filesize
1.0MB

Download
memory/2236-8-0x00000000002B0000-0x00000000002BC000-memory.dmp

Filesize
48KB

Download
memory/2236-9-0x0000000076D70000-0x0000000076F19000-memory.dmp

Filesize
1.7MB

Download
memory/2236-7-0x0000000076F60000-0x0000000077036000-memory.dmp

Filesize
856KB

Download
memory/2236-11-0x0000000076D70000-0x0000000076F19000-memory.dmp

Filesize
1.7MB

Download
memory/2784-10-0x0000000076D70000-0x0000000076F19000-memory.dmp

Filesize
1.7MB

Download
memory/2784-5-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/2784-30-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads