guloader | d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae

Analysis

max time kernel
147s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01/05/2024, 02:00

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe
Size 429KB
Sample240501-ce3hqsfe46
SHA256 d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae
MD5 566a9fbd642c4a82e90316c224cc095c
SHA1 bd2741e788f69eb3cb56f1cee3fad112838d740e
SHA512 7e27ececc7f952f9231dfff21eda0211edd6a247d1d884c5ffc11af1d708735bc459d11b6ddd03fed7986f1605fd69beb9d3f782b1ab211f2c7f90f02c0928f5
SSDEEP 6144:7pkXGh6tHk47x2IIjpLUJpJ0IgB9AvCF1RIJ+oBlGORmbrKydSBmpJ3PVF97/ENI:2ZHkkx2IIdLdPAvCjRIEZVxdSwb
MD5 SHA1 SHA512 SSDEEP

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
1704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
3	drive.google.com
5	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe
2704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1704 set thread context of 2704	1704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe	30

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Egetforbrug211\Sindsoprrenes.sto	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.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
1032	2704	WerFault.exe	30

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 2704	1704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe	30
PID 1704 wrote to memory of 2704	1704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe	30
PID 1704 wrote to memory of 2704	1704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe	30
PID 1704 wrote to memory of 2704	1704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe	30
PID 1704 wrote to memory of 2704	1704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe	30
PID 1704 wrote to memory of 2704	1704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe	30
PID 2704 wrote to memory of 1032	2704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe	33
PID 2704 wrote to memory of 1032	2704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe	33
PID 2704 wrote to memory of 1032	2704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe	33
PID 2704 wrote to memory of 1032	2704	d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe	33

C:\Users\Admin\AppData\Local\Temp\d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe
"C:\Users\Admin\AppData\Local\Temp\d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Users\Admin\AppData\Local\Temp\d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe
  "C:\Users\Admin\AppData\Local\Temp\d4be2f3cfa3365cf4b7d567839a2d31f7d0683bcc39e3abd041f1cfbb6b6bbae.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2704
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 1272
    3⤵
    - Program crash
    PID:1032

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

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

System.dll

Path \Users\Admin\AppData\Local\Temp\nso8FB4.tmp\System.dll
Size 11KB
SHA256 9b93c61c9d63ef8ec80892cc0e4a0877966dca9b0c3eb85555cebd2ddf4d6eed
MD5 fc3772787eb239ef4d0399680dcc4343
SHA1 db2fa99ec967178cd8057a14a428a8439a961a73
SHA512 79e491ca4591a5da70116114b7fbb66ee15a0532386035e980c9dfe7afb59b1f9d9c758891e25bfb45c36b07afd3e171bac37a86c887387ef0e80b1eaf296c89
SSDEEP 192:eS24sihno00Wfl97nH6T2enXwWobpWBTU4VtHT7dmN35OloSl:S8QIl975eXqlWBrz7YLOlo
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1704-10-0x0000000002F00000-0x0000000004076000-memory.dmp

Download

memory/1704-11-0x00000000773E0000-0x0000000077589000-memory.dmp

Download

memory/1704-12-0x00000000775D0000-0x00000000776A6000-memory.dmp

Download

memory/1704-14-0x0000000010000000-0x0000000010006000-memory.dmp

Download

memory/1704-13-0x0000000002F00000-0x0000000004076000-memory.dmp

Download

memory/1704-40-0x0000000002F00000-0x0000000004076000-memory.dmp

Download

memory/2704-17-0x0000000000400000-0x0000000001462000-memory.dmp

Download

memory/2704-16-0x0000000001470000-0x00000000025E6000-memory.dmp

Download

memory/2704-39-0x0000000000400000-0x0000000001462000-memory.dmp

Download

memory/2704-15-0x0000000000400000-0x0000000001462000-memory.dmp

Download

memory/2704-42-0x0000000000400000-0x0000000001462000-memory.dmp

Download

memory/2704-41-0x0000000000400000-0x0000000001462000-memory.dmp

Download

memory/2704-43-0x0000000001470000-0x00000000025E6000-memory.dmp

Download

memory/2704-45-0x0000000000400000-0x0000000001462000-memory.dmp

Download

memory/2704-44-0x0000000000400000-0x0000000001462000-memory.dmp

Download

memory/2704-47-0x0000000000400000-0x0000000001462000-memory.dmp

Download

memory/2704-46-0x0000000000400000-0x0000000001462000-memory.dmp

Download

memory/2704-48-0x0000000000400000-0x0000000001462000-memory.dmp

Download