guloader | 9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2024 21:30

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe
Size

523KB
MD5

6193601803552ff86919a43e0cf2b9ee
SHA1

e05fcd72c26c1fb659fc9c1488887d7e06847fe5
SHA256

9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2
SHA512

9f3ff9950edcf20c994c8d3e8e58fbd39251456ac12164b012e47fc2645fdc17dd8ecdb737b8430def7d43649a93066de6750bd5ac578206a30232696f2751ea
SSDEEP

12288:IV62a2glYb8wUGif7N0VNmq4xYoST/Uz6WouzJ:Io2aJOAwUGmCVNX4Go6WoWJ

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
1620	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe
1620	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1620	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe
2344	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1620 set thread context of 2344	1620	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe	83

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\Trapezia146\Terminologien.faa	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe

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

System Information Discovery
T1082

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	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1620	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 2344	1620	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe	83
PID 1620 wrote to memory of 2344	1620	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe	83
PID 1620 wrote to memory of 2344	1620	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe	83
PID 1620 wrote to memory of 2344	1620	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe	83
PID 1620 wrote to memory of 2344	1620	9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe	83

C:\Users\Admin\AppData\Local\Temp\9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe
"C:\Users\Admin\AppData\Local\Temp\9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Users\Admin\AppData\Local\Temp\9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe
  "C:\Users\Admin\AppData\Local\Temp\9c9ac5aaddd8c4e34dcc7ef71fdab160e072cf1e14e91be9378bd9968931a1e2.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2344

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nsfAC10.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
memory/1620-13-0x00000000045A0000-0x0000000005C5B000-memory.dmp

Filesize
22.7MB

Download
memory/1620-14-0x00000000775D1000-0x00000000776F1000-memory.dmp

Filesize
1.1MB

Download
memory/1620-15-0x0000000074435000-0x0000000074436000-memory.dmp

Filesize
4KB

Download
memory/1620-16-0x00000000045A0000-0x0000000005C5B000-memory.dmp

Filesize
22.7MB

Download
memory/1620-37-0x00000000045A0000-0x0000000005C5B000-memory.dmp

Filesize
22.7MB

Download
memory/2344-17-0x0000000001A60000-0x000000000311B000-memory.dmp

Filesize
22.7MB

Download
memory/2344-18-0x0000000077658000-0x0000000077659000-memory.dmp

Filesize
4KB

Download
memory/2344-20-0x0000000001A60000-0x000000000311B000-memory.dmp

Filesize
22.7MB

Download
memory/2344-30-0x0000000000800000-0x0000000001A54000-memory.dmp

Filesize
18.3MB

Download
memory/2344-31-0x00000000775D1000-0x00000000776F1000-memory.dmp

Filesize
1.1MB

Download