guloader | 07a0fa450f4525bc8b015f18dd13e7af70fe59a35b5296470fadaed9f2bbca06

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
07-12-2024 01:28

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General

Target

Nakliye belgeleri.exe
Size

1.1MB
MD5

620924d9a2e90d34b060c7e210785926
SHA1

736ce2fe105049ed45e90e5bd9d83086a6006c32
SHA256

014f4753734a62111955ca64721aa64a4b6d98b36e5a3bd9a4da5afc128b2f17
SHA512

d9b73f6d65eb4aabf05e96e06c864a68d921c627eca178cba573a46a1818f00d6934ce794eb1bcedccc2fbaef83ae2270eb9583217705293860450ef25a41912
SSDEEP

12288:pl/4qNMmw1GYDmImQgThNj/yMf5ck8WMvwvKIcrIPdEBEo7vPmXaNgI+pMeVOqIt:rM05NjKiclwSIU04Eb1MncwaF0C9Wn

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
3032	Nakliye belgeleri.exe
3032	Nakliye belgeleri.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\usselryg.ini	Nakliye belgeleri.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3032	Nakliye belgeleri.exe
2852	Nakliye belgeleri.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3032 set thread context of 2852	3032	Nakliye belgeleri.exe	31

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\penslet.Tyc241	Nakliye belgeleri.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Nakliye belgeleri.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Nakliye belgeleri.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3032	Nakliye belgeleri.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2852	3032	Nakliye belgeleri.exe	31
PID 3032 wrote to memory of 2852	3032	Nakliye belgeleri.exe	31
PID 3032 wrote to memory of 2852	3032	Nakliye belgeleri.exe	31
PID 3032 wrote to memory of 2852	3032	Nakliye belgeleri.exe	31
PID 3032 wrote to memory of 2852	3032	Nakliye belgeleri.exe	31
PID 3032 wrote to memory of 2852	3032	Nakliye belgeleri.exe	31

C:\Users\Admin\AppData\Local\Temp\Nakliye belgeleri.exe
"C:\Users\Admin\AppData\Local\Temp\Nakliye belgeleri.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Users\Admin\AppData\Local\Temp\Nakliye belgeleri.exe
  "C:\Users\Admin\AppData\Local\Temp\Nakliye belgeleri.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2852

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\nsjB1B5.tmp\System.dll

Filesize
11KB

MD5
fc90dfb694d0e17b013d6f818bce41b0

SHA1
3243969886d640af3bfa442728b9f0dff9d5f5b0

SHA256
7fe77ca13121a113c59630a3dba0c8aaa6372e8082393274da8f8608c4ce4528

SHA512
324f13aa7a33c6408e2a57c3484d1691ecee7c3c1366de2bb8978c8dc66b18425d8cab5a32d1702c13c43703e36148a022263de7166afdce141da2b01169f1c6

Download Submit
memory/2852-21-0x00000000770A0000-0x0000000077249000-memory.dmp

Filesize
1.7MB

Download
memory/2852-23-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/3032-17-0x00000000036A0000-0x0000000004E64000-memory.dmp

Filesize
23.8MB

Download
memory/3032-19-0x00000000770A0000-0x0000000077249000-memory.dmp

Filesize
1.7MB

Download
memory/3032-18-0x00000000770A1000-0x00000000771A2000-memory.dmp

Filesize
1.0MB

Download
memory/3032-20-0x00000000036A0000-0x0000000004E64000-memory.dmp

Filesize
23.8MB

Download
memory/3032-22-0x00000000036A0000-0x0000000004E64000-memory.dmp

Filesize
23.8MB

Download