guloader | 5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c

Analysis

max time kernel
149s
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
06-11-2024 02:43

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General

Target

5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe
Size

504KB
MD5

7d0910b695d11385096aa287aa616fa1
SHA1

bab632ec687ba8b45cc29a29ca675ee5e05a48d2
SHA256

5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c
SHA512

7ad728a01047eeac9060184d43cd9f4e4d286a103a14b5296f3600dc6631a5d959ebbbc5d08988c5c95726dce9920da78a724471b5547a85fcf2b35a9d358129
SSDEEP

12288:/5K2KbDXd0+PJdFuvJujrJH7Qshco9VXHtdIaLDjnm:82Um+jFgk1HcsW0hIaLDjn

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
3968	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe
3968	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3968	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe
4512	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3968 set thread context of 4512	3968	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe	97

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	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3968	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3968 wrote to memory of 4512	3968	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe	97
PID 3968 wrote to memory of 4512	3968	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe	97
PID 3968 wrote to memory of 4512	3968	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe	97
PID 3968 wrote to memory of 4512	3968	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe	97
PID 3968 wrote to memory of 4512	3968	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe	97

C:\Users\Admin\AppData\Local\Temp\5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe
"C:\Users\Admin\AppData\Local\Temp\5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.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:3968
- C:\Users\Admin\AppData\Local\Temp\5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe
  "C:\Users\Admin\AppData\Local\Temp\5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:4512

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsx80AA.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
memory/3968-25-0x00000000041F0000-0x000000000741A000-memory.dmp

Filesize
50.2MB

Download
memory/3968-26-0x00000000777E1000-0x0000000077901000-memory.dmp

Filesize
1.1MB

Download
memory/3968-27-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/3968-28-0x00000000041F0000-0x000000000741A000-memory.dmp

Filesize
50.2MB

Download
memory/3968-30-0x00000000041F0000-0x000000000741A000-memory.dmp

Filesize
50.2MB

Download
memory/4512-29-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4512-31-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download