guloader | 5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
10/10/2023, 17:38

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe
Size

1002KB
MD5

341876f1aa06d857f6e8d349ed95f6dd
SHA1

173b249c21a6fdc76d28af36f632afff8fd3bb49
SHA256

5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b
SHA512

a031cfd3dd8ed2aa46268315841aa94ffc0542d48fbb8efbda87e3d2c1ad40cf541c5ec48f34e972aa72a330cc83245c8ae6a8404194b3d190f8531ae9ab3d57
SSDEEP

24576:UeXmiSZ3YNp9jTDh1bM6mfcIuBFo7WCBYR06Nu0wz:y5+NTjJ9MjkIYo7FS0H

Score

10^/10

guloader downloader

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
652	5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
652	5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe
2716	5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 652 set thread context of 2716	652	5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe	91

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
652	5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 652 wrote to memory of 2716	652	5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe	91
PID 652 wrote to memory of 2716	652	5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe	91
PID 652 wrote to memory of 2716	652	5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe	91
PID 652 wrote to memory of 2716	652	5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe	91
PID 652 wrote to memory of 2716	652	5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe	91

C:\Users\Admin\AppData\Local\Temp\5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe
"C:\Users\Admin\AppData\Local\Temp\5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:652
- C:\Users\Admin\AppData\Local\Temp\5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe
  "C:\Users\Admin\AppData\Local\Temp\5b3bdcc6a13c551a42d31a66e0546648ffa5a41dd79a4d367992785a0c259c4b_JC.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nsi9AE9.tmp\System.dll

Filesize
12KB

MD5
8cf2ac271d7679b1d68eefc1ae0c5618

SHA1
7cc1caaa747ee16dc894a600a4256f64fa65a9b8

SHA256
6950991102462d84fdc0e3b0ae30c95af8c192f77ce3d78e8d54e6b22f7c09ba

SHA512
ce828fb9ecd7655cc4c974f78f209d3326ba71ced60171a45a437fc3fff3bd0d69a0997adaca29265c7b5419bdea2b17f8cc8ceae1b8ce6b22b7ed9120bb5ad3

Download Submit
memory/652-22-0x0000000005230000-0x0000000005EC5000-memory.dmp

Filesize
12.6MB

Download
memory/652-23-0x0000000005230000-0x0000000005EC5000-memory.dmp

Filesize
12.6MB

Download
memory/652-24-0x00000000771A1000-0x00000000772C1000-memory.dmp

Filesize
1.1MB

Download
memory/652-25-0x00000000771A1000-0x00000000772C1000-memory.dmp

Filesize
1.1MB

Download
memory/652-26-0x0000000073DF0000-0x0000000073DF7000-memory.dmp

Filesize
28KB

Download
memory/2716-27-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/2716-28-0x0000000001660000-0x00000000022F5000-memory.dmp

Filesize
12.6MB

Download
memory/2716-29-0x0000000001660000-0x00000000022F5000-memory.dmp

Filesize
12.6MB

Download
memory/2716-30-0x0000000077228000-0x0000000077229000-memory.dmp

Filesize
4KB

Download
memory/2716-31-0x0000000077245000-0x0000000077246000-memory.dmp

Filesize
4KB

Download
memory/2716-32-0x00000000771A1000-0x00000000772C1000-memory.dmp

Filesize
1.1MB

Download
memory/2716-33-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download