guloader | e5142b32498bf308fe74c79a3c5b308f1eff5319da59a134bd55fcb0644785fe

Analysis

max time kernel
149s
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
29-12-2024 06:07

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General

Target

shellcode.exe
Size

1.0MB
MD5

09ea8a8f6f4b41e779c728bb9060e21d
SHA1

1bb85f6634b32ead5eb164bc7bf80aa36299e006
SHA256

1df4dc12c0118cb36a33456ace897124540bc1d6553554ad7334bee2ae8aa834
SHA512

6019ceeba9f6ee6dc1ddacf2f12324b71a18172eb975977de01e50c2eca6b6162630395423800c8c222f7b0387cef2be8b896038d2484be187d1e8500079662f
SSDEEP

1536:vh3LTV30kb217S/Y4rGm/It3Rg7UvDafGRyF6v:vBLTV30717UBGH9RAUvDKeW6v

Score

10^/10

guloader discovery downloader

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	shellcode.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	ieinstal.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1352	shellcode.exe
3092	ieinstal.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1352 set thread context of 3092	1352	shellcode.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	shellcode.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ieinstal.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1352	shellcode.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1352 wrote to memory of 3092	1352	shellcode.exe	82
PID 1352 wrote to memory of 3092	1352	shellcode.exe	82
PID 1352 wrote to memory of 3092	1352	shellcode.exe	82
PID 1352 wrote to memory of 3092	1352	shellcode.exe	82

C:\Users\Admin\AppData\Local\Temp\shellcode.exe
"C:\Users\Admin\AppData\Local\Temp\shellcode.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 WriteProcessMemory
PID:1352
- C:\Program Files (x86)\internet explorer\ieinstal.exe
  "C:\Program Files (x86)\internet explorer\ieinstal.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:3092

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

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1352-0-0x0000000000400000-0x0000000000501000-memory.dmp

Filesize
1.0MB

Download
memory/1352-1-0x0000000077D71000-0x0000000077E91000-memory.dmp

Filesize
1.1MB

Download
memory/1352-2-0x0000000077D71000-0x0000000077E91000-memory.dmp

Filesize
1.1MB

Download
memory/1352-5-0x0000000000400000-0x0000000000501000-memory.dmp

Filesize
1.0MB

Download
memory/1352-15-0x0000000000400000-0x0000000000501000-memory.dmp

Filesize
1.0MB

Download
memory/3092-3-0x0000000000B70000-0x0000000000C70000-memory.dmp

Filesize
1024KB

Download
memory/3092-4-0x0000000000B70000-0x0000000000C70000-memory.dmp

Filesize
1024KB

Download
memory/3092-6-0x0000000077DF8000-0x0000000077DF9000-memory.dmp

Filesize
4KB

Download
memory/3092-7-0x0000000077D71000-0x0000000077E91000-memory.dmp

Filesize
1.1MB

Download
memory/3092-8-0x0000000000B70000-0x0000000000C70000-memory.dmp

Filesize
1024KB

Download
memory/3092-9-0x0000000000400000-0x000000000062B000-memory.dmp

Filesize
2.2MB

Download