guloader | 8085c17ea9441ff19ee1d021408ce2b159bdf4d53704a9afd180e76033c74415

General

Target

rTransferenciarealizada451236.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:

rTransferenciarealizada451236.exe

pid process

1580 rTransferenciarealizada451236.exe
1580 rTransferenciarealizada451236.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

26 drive.google.com
27 drive.google.com
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

rTransferenciarealizada451236.exe

pid process

3984 rTransferenciarealizada451236.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

rTransferenciarealizada451236.exerTransferenciarealizada451236.exe

pid process

1580 rTransferenciarealizada451236.exe
3984 rTransferenciarealizada451236.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

rTransferenciarealizada451236.exe

description pid process target process

PID 1580 set thread context of 3984 1580 rTransferenciarealizada451236.exe rTransferenciarealizada451236.exe
Drops file in Program Files directory 1 IoCs

Processes:

rTransferenciarealizada451236.exe

description ioc process

File opened for modification C:\Program Files (x86)\Common Files\Reoil.mul rTransferenciarealizada451236.exe

pid	process
1580	rTransferenciarealizada451236.exe
1580	rTransferenciarealizada451236.exe

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

pid	process
3984	rTransferenciarealizada451236.exe

pid	process
1580	rTransferenciarealizada451236.exe
3984	rTransferenciarealizada451236.exe

description	pid	process	target process
PID 1580 set thread context of 3984	1580	rTransferenciarealizada451236.exe	rTransferenciarealizada451236.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Common Files\Reoil.mul	rTransferenciarealizada451236.exe

Drops file in Windows directory 6 IoCs

Processes:

rTransferenciarealizada451236.exe

description	ioc	process
File opened for modification	C:\Windows\resources\nringsmiddelet.ini	rTransferenciarealizada451236.exe
File opened for modification	C:\Windows\resources\stenhjsplanternes\fordreves.ini	rTransferenciarealizada451236.exe
File opened for modification	C:\Windows\Fonts\karrooers.ini	rTransferenciarealizada451236.exe
File opened for modification	C:\Windows\Fonts\brunsttiderne.tri	rTransferenciarealizada451236.exe
File opened for modification	C:\Windows\Fonts\Spodium39.int	rTransferenciarealizada451236.exe
File opened for modification	C:\Windows\Belringernes\Dermatophony.ini	rTransferenciarealizada451236.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2972 3984 WerFault.exe rTransferenciarealizada451236.exe

pid	pid_target	process	target process
2972	3984	WerFault.exe	rTransferenciarealizada451236.exe

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:

rTransferenciarealizada451236.exerTransferenciarealizada451236.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rTransferenciarealizada451236.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rTransferenciarealizada451236.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rTransferenciarealizada451236.exe

pid process

3984 rTransferenciarealizada451236.exe
3984 rTransferenciarealizada451236.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

rTransferenciarealizada451236.exe

pid process

1580 rTransferenciarealizada451236.exe

pid	process
3984	rTransferenciarealizada451236.exe
3984	rTransferenciarealizada451236.exe

pid	process
1580	rTransferenciarealizada451236.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

rTransferenciarealizada451236.exe

description	pid	process	target process
PID 1580 wrote to memory of 3984	1580	rTransferenciarealizada451236.exe	rTransferenciarealizada451236.exe
PID 1580 wrote to memory of 3984	1580	rTransferenciarealizada451236.exe	rTransferenciarealizada451236.exe
PID 1580 wrote to memory of 3984	1580	rTransferenciarealizada451236.exe	rTransferenciarealizada451236.exe
PID 1580 wrote to memory of 3984	1580	rTransferenciarealizada451236.exe	rTransferenciarealizada451236.exe
PID 1580 wrote to memory of 3984	1580	rTransferenciarealizada451236.exe	rTransferenciarealizada451236.exe

C:\Users\Admin\AppData\Local\Temp\rTransferenciarealizada451236.exe
"C:\Users\Admin\AppData\Local\Temp\rTransferenciarealizada451236.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:1580
- C:\Users\Admin\AppData\Local\Temp\rTransferenciarealizada451236.exe
  "C:\Users\Admin\AppData\Local\Temp\rTransferenciarealizada451236.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3984
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3984 -s 1048
    3⤵
    - Program crash
    PID:2972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3984 -ip 3984
1⤵
PID:3936

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\nsp8500.tmp\System.dll

Filesize
11KB

MD5
c9473cb90d79a374b2ba6040ca16e45c

SHA1
ab95b54f12796dce57210d65f05124a6ed81234a

SHA256
b80a5cba69d1853ed5979b0ca0352437bf368a5cfb86cb4528edadd410e11352

SHA512
eafe7d5894622bc21f663bca4dd594392ee0f5b29270b6b56b0187093d6a3a103545464ff6398ad32d2cf15dab79b1f133218ba9ba337ddc01330b5ada804d7b

Download Submit
memory/1580-18-0x00000000031C0000-0x00000000052C3000-memory.dmp

Filesize
33.0MB

Download
memory/1580-19-0x00000000031C0000-0x00000000052C3000-memory.dmp

Filesize
33.0MB

Download
memory/1580-20-0x0000000076E61000-0x0000000076F81000-memory.dmp

Filesize
1.1MB

Download
memory/1580-21-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/1580-22-0x00000000031C0000-0x00000000052C3000-memory.dmp

Filesize
33.0MB

Download
memory/3984-23-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3984-24-0x0000000001660000-0x0000000003763000-memory.dmp

Filesize
33.0MB

Download
memory/3984-37-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3984-38-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3984-39-0x0000000001660000-0x0000000003763000-memory.dmp

Filesize
33.0MB

Download
memory/3984-40-0x0000000076E61000-0x0000000076F81000-memory.dmp

Filesize
1.1MB

Download
memory/3984-41-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads