guloader | e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-01-2025 05:42

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General

Target

e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe
Size

571KB
MD5

9bb2cdb8508ee2255a35ecec43462a48
SHA1

c7465e8b0a3ae61b23520752afbb8bf89a3cecdd
SHA256

e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa
SHA512

0b8e8399eb04372c1cb70467dca25078ab255d01c448fa7ccabd620d9066306a1127c4e5caa4af66226662bb3b2d143045b9212332e7408c7b97ea40672a0ac1
SSDEEP

12288:ifYfUlNHYh6EEfqUhn5i5mfQAsS+6ePZxIgLF7eEbH+aj:ifYMPYcqUhY5mp9+6ehxIg5H9j

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
4956	e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe
4956	e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe

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

Web Service

T1102

flow	ioc
17	drive.google.com
16	drive.google.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4956	e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe
3472	e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4956 set thread context of 3472	4956	e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe	84

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	e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4956	e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4956 wrote to memory of 3472	4956	e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe	84
PID 4956 wrote to memory of 3472	4956	e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe	84
PID 4956 wrote to memory of 3472	4956	e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe	84
PID 4956 wrote to memory of 3472	4956	e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe	84
PID 4956 wrote to memory of 3472	4956	e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe	84

C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe
"C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4956
- C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe
  "C:\Users\Admin\AppData\Local\Temp\e5fd95536576d21b43b1552aed3040ea366375b5a952c333dd89f1ed251c12aa.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:3472

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

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsc8B59.tmp\System.dll

Filesize
12KB

MD5
192639861e3dc2dc5c08bb8f8c7260d5

SHA1
58d30e460609e22fa0098bc27d928b689ef9af78

SHA256
23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6

SHA512
6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc

Download Submit
memory/3472-15-0x0000000001700000-0x0000000003817000-memory.dmp

Filesize
33.1MB

Download
memory/3472-28-0x00000000004A0000-0x00000000016F4000-memory.dmp

Filesize
18.3MB

Download
memory/3472-29-0x0000000001700000-0x0000000003817000-memory.dmp

Filesize
33.1MB

Download
memory/4956-11-0x0000000004270000-0x0000000006387000-memory.dmp

Filesize
33.1MB

Download
memory/4956-12-0x0000000077311000-0x0000000077431000-memory.dmp

Filesize
1.1MB

Download
memory/4956-13-0x0000000073F65000-0x0000000073F66000-memory.dmp

Filesize
4KB

Download
memory/4956-14-0x0000000004270000-0x0000000006387000-memory.dmp

Filesize
33.1MB

Download