guloader | 63c7c7144d487bb38e9473ed1a7b420440b131981c5e83901614212f7d9bd8d8

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
08/08/2023, 07:00

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General

Target

DRAWING-MATERIALS NEEDED.exe
Size

273KB
MD5

6ea128aad981db51fb37a219cb6b266e
SHA1

37bdacba8fe247ff5ead7524a0ffc17b7dfbfdbc
SHA256

63c7c7144d487bb38e9473ed1a7b420440b131981c5e83901614212f7d9bd8d8
SHA512

dfd285c8fb0026025a1c60c46efd0c02d9cd5741e04219c5cb1aaeba9f08e0c3f42735f5f6d1bb61294cef203aa3e6caa60fec879b4b6940f6641e0b6c42bac3
SSDEEP

6144:YzAJFXG1/PZthjld/77Pm3pHT5EzjDu7w5x:CCar377ypz5ELu7w5x

Score

10^/10

guloader downloader

Malware Config

Signatures

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

Checks QEMU agent file 2 TTPs 1 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	DRAWING-MATERIALS NEEDED.exe

Loads dropped DLL 1 IoCs

pid	Process
1648	DRAWING-MATERIALS NEEDED.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1648	DRAWING-MATERIALS NEEDED.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2972	1648	WerFault.exe	9

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 2972	1648	DRAWING-MATERIALS NEEDED.exe	28
PID 1648 wrote to memory of 2972	1648	DRAWING-MATERIALS NEEDED.exe	28
PID 1648 wrote to memory of 2972	1648	DRAWING-MATERIALS NEEDED.exe	28
PID 1648 wrote to memory of 2972	1648	DRAWING-MATERIALS NEEDED.exe	28

C:\Users\Admin\AppData\Local\Temp\DRAWING-MATERIALS NEEDED.exe
"C:\Users\Admin\AppData\Local\Temp\DRAWING-MATERIALS NEEDED.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:1648
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1648 -s 492
  2⤵
  - Program crash
  PID:2972

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsd6D54.tmp\System.dll

Filesize
11KB

MD5
4d3b19a81bd51f8ce44b93643a4e3a99

SHA1
35f8b00e85577b014080df98bd2c378351d9b3e9

SHA256
fda0018ab182ac6025d2fc9a2efcce3745d1da21ce5141859f8286cf319a52ce

SHA512
b2ba9c961c0e1617f802990587a9000979ab5cc493ae2f8ca852eb43eeaf24916b0b29057dbff7d41a1797dfb2dce3db41990e8639b8f205771dbec3fd80f622

Download Submit
memory/1648-65-0x00000000030C0000-0x0000000003CB8000-memory.dmp

Filesize
12.0MB

Download
memory/1648-66-0x00000000030C0000-0x0000000003CB8000-memory.dmp

Filesize
12.0MB

Download
memory/1648-67-0x0000000076E00000-0x0000000076FA9000-memory.dmp

Filesize
1.7MB

Download
memory/1648-68-0x0000000076FF0000-0x00000000770C6000-memory.dmp

Filesize
856KB

Download