guloader | 5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c

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

Processes:

5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

pid	process
2520	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe
2520	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

pid	process
2520	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe
2856	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

description	pid	process	target process
PID 2520 set thread context of 2856	2520	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.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

Processes:

5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

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

Processes:

5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

pid process

2520 5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

description	pid	process	target process
PID 2520 wrote to memory of 2856	2520	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe
PID 2520 wrote to memory of 2856	2520	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe
PID 2520 wrote to memory of 2856	2520	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe
PID 2520 wrote to memory of 2856	2520	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe
PID 2520 wrote to memory of 2856	2520	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe
PID 2520 wrote to memory of 2856	2520	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe	5afa64f08316e42fe5a53efd3a7354f06f8c654bf7d2c2784dbfef6ad117349c.exe

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:2520
- 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:2856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\nstBD86.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
memory/2520-27-0x0000000003600000-0x000000000682A000-memory.dmp

Filesize
50.2MB

Download
memory/2520-28-0x00000000778A1000-0x00000000779A2000-memory.dmp

Filesize
1.0MB

Download
memory/2520-29-0x00000000778A0000-0x0000000077A49000-memory.dmp

Filesize
1.7MB

Download
memory/2520-30-0x0000000003600000-0x000000000682A000-memory.dmp

Filesize
50.2MB

Download
memory/2520-31-0x0000000003600000-0x000000000682A000-memory.dmp

Filesize
50.2MB

Download
memory/2856-32-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2856-34-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads