guloader | 22353112183fd96e23f5a134378ad7856f7a02c064d838a292ef65261ac5a98b

Analysis

max time kernel
145s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
28-06-2024 01:12

Target

27062024-322copy.exe
Size

873KB
MD5

a37f4e7d2f3ac6c995f1986fcc9bb48f
SHA1

4e922eccec03db2683096b531801c73227e5ff42
SHA256

76f267de8fd5fa4744fb8294ee9a4765afeba03b36244527feca60a32df155af
SHA512

2959cca5d24deb57910fdd7ae9baae27c3bd0790868730477391e0a7e42fd8aec21225e902c96e46ccd23c2d3b80f8cb9a43d3d4e545fcd2c1d083564d2869ab
SSDEEP

12288:XcIjd3nQIQsk3na+Qin2At4FhujlTdp6c4TgONNER+NzYCzXBl5GgCWr2mS:XcIjUna3in2o4FulG4ONNi+NBNlY2amS

Score

10^/10

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Loads dropped DLL 1 IoCs

Processes:

27062024-322copy.exe

pid process

4564 27062024-322copy.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

27062024-322copy.exe27062024-322copy.exe

pid process

4564 27062024-322copy.exe
1516 27062024-322copy.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

27062024-322copy.exe

description pid process target process

PID 4564 set thread context of 1516 4564 27062024-322copy.exe 27062024-322copy.exe
Drops file in Windows directory 1 IoCs

Processes:

27062024-322copy.exe

description ioc process

File opened for modification C:\Windows\reassigned\sandi.ini 27062024-322copy.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

27062024-322copy.exe

pid process

4564 27062024-322copy.exe

pid	process
4564	27062024-322copy.exe

pid	process
4564	27062024-322copy.exe
1516	27062024-322copy.exe

description	pid	process	target process
PID 4564 set thread context of 1516	4564	27062024-322copy.exe	27062024-322copy.exe

description	ioc	process
File opened for modification	C:\Windows\reassigned\sandi.ini	27062024-322copy.exe

pid	process
4564	27062024-322copy.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

27062024-322copy.exe

description	pid	process	target process
PID 4564 wrote to memory of 1516	4564	27062024-322copy.exe	27062024-322copy.exe
PID 4564 wrote to memory of 1516	4564	27062024-322copy.exe	27062024-322copy.exe
PID 4564 wrote to memory of 1516	4564	27062024-322copy.exe	27062024-322copy.exe
PID 4564 wrote to memory of 1516	4564	27062024-322copy.exe	27062024-322copy.exe
PID 4564 wrote to memory of 1516	4564	27062024-322copy.exe	27062024-322copy.exe

C:\Users\Admin\AppData\Local\Temp\27062024-322copy.exe
"C:\Users\Admin\AppData\Local\Temp\27062024-322copy.exe"
2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:1516

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

C:\Users\Admin\AppData\Local\Temp\nsw7E3A.tmp\System.dll
Filesize
11KB

MD5
55a26d7800446f1373056064c64c3ce8

SHA1
80256857e9a0a9c8897923b717f3435295a76002

SHA256
904fd5481d72f4e03b01a455f848dedd095d0fb17e33608e0d849f5196fb6ff8

SHA512
04b8ab7a85c26f188c0a06f524488d6f2ac2884bf107c860c82e94ae12c3859f825133d78338fd2b594dfc48f7dc9888ae76fee786c6252a5c77c88755128a5b

Download Submit
memory/1516-27-0x0000000001700000-0x0000000003174000-memory.dmp

Filesize
26.5MB

Download
memory/1516-29-0x00000000778E8000-0x00000000778E9000-memory.dmp

Filesize
4KB

Download
memory/1516-30-0x0000000077905000-0x0000000077906000-memory.dmp

Filesize
4KB

Download
memory/1516-31-0x00000000004A0000-0x00000000016F4000-memory.dmp

Filesize
18.3MB

Download
memory/1516-32-0x0000000001700000-0x0000000003174000-memory.dmp

Filesize
26.5MB

Download
memory/1516-34-0x0000000077861000-0x0000000077981000-memory.dmp

Filesize
1.1MB

Download
memory/4564-24-0x0000000004A40000-0x00000000064B4000-memory.dmp

Filesize
26.5MB

Download
memory/4564-25-0x0000000077861000-0x0000000077981000-memory.dmp

Filesize
1.1MB

Download
memory/4564-26-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/4564-28-0x0000000004A40000-0x00000000064B4000-memory.dmp

Filesize
26.5MB

Download
memory/4564-39-0x0000000004A40000-0x00000000064B4000-memory.dmp

Filesize
26.5MB

Download