guloader | 8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415

General

Target

8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe
Size

893KB
MD5

12f32dc32a25a48db3aca40758745e80
SHA1

41f2c89b8c83b279633c641d1e266a3a2487294d
SHA256

8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415
SHA512

b3e71933c26fc75dfa3aef0efc9ef375572df28cdba1b85dac9ecda062e572a6999dcbeec382b04e5a7d24e3485f5aa6852fad9e2d36fded55525fa8acf8dd9c
SSDEEP

24576:6x+rRnZt2HrJ1oAzm2ESD62HnQIQMOKOaeKX:6x+1nZcLHFzmnSW2HTzOKOwX

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:

8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

pid	Process
3668	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe
3668	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

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

Web Service

T1102

Processes:

flow	ioc
27	drive.google.com
26	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

pid	Process
3444	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

pid	Process
3668	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe
3444	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

description	pid	Process	procid_target
PID 3668 set thread context of 3444	3668	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe	94

Drops file in Program Files directory 1 IoCs

Processes:

8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\Reoil.mul	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

Drops file in Windows directory 6 IoCs

Processes:

8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

description	ioc	Process
File opened for modification	C:\Windows\resources\nringsmiddelet.ini	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe
File opened for modification	C:\Windows\resources\stenhjsplanternes\fordreves.ini	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe
File opened for modification	C:\Windows\Fonts\karrooers.ini	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe
File opened for modification	C:\Windows\Fonts\brunsttiderne.tri	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe
File opened for modification	C:\Windows\Fonts\Spodium39.int	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe
File opened for modification	C:\Windows\Belringernes\Dermatophony.ini	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.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:

8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

pid	Process
3444	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe
3444	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

pid	Process
3668	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe

description	pid	Process	procid_target
PID 3668 wrote to memory of 3444	3668	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe	94
PID 3668 wrote to memory of 3444	3668	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe	94
PID 3668 wrote to memory of 3444	3668	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe	94
PID 3668 wrote to memory of 3444	3668	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe	94
PID 3668 wrote to memory of 3444	3668	8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe	94

C:\Users\Admin\AppData\Local\Temp\8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe
"C:\Users\Admin\AppData\Local\Temp\8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3668
- C:\Users\Admin\AppData\Local\Temp\8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe
  "C:\Users\Admin\AppData\Local\Temp\8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3444

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsxC024.tmp\System.dll

Filesize
11KB

MD5
c9473cb90d79a374b2ba6040ca16e45c

SHA1
ab95b54f12796dce57210d65f05124a6ed81234a

SHA256
b80a5cba69d1853ed5979b0ca0352437bf368a5cfb86cb4528edadd410e11352

SHA512
eafe7d5894622bc21f663bca4dd594392ee0f5b29270b6b56b0187093d6a3a103545464ff6398ad32d2cf15dab79b1f133218ba9ba337ddc01330b5ada804d7b

Download Submit
memory/3444-38-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3444-23-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3444-24-0x0000000001660000-0x0000000003763000-memory.dmp

Filesize
33.0MB

Download
memory/3444-37-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3444-39-0x0000000001660000-0x0000000003763000-memory.dmp

Filesize
33.0MB

Download
memory/3444-40-0x0000000077991000-0x0000000077AB1000-memory.dmp

Filesize
1.1MB

Download
memory/3444-41-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3668-20-0x0000000077991000-0x0000000077AB1000-memory.dmp

Filesize
1.1MB

Download
memory/3668-19-0x0000000003190000-0x0000000005293000-memory.dmp

Filesize
33.0MB

Download
memory/3668-21-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/3668-22-0x0000000003190000-0x0000000005293000-memory.dmp

Filesize
33.0MB

Download
memory/3668-18-0x0000000003190000-0x0000000005293000-memory.dmp

Filesize
33.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads