guloader | 7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9

General

Target

7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe
Size

734KB
MD5

0c9009a01f16ae4f68f806f30fad5ed2
SHA1

c92ad48134ec43427462c3657cd229dd31e239df
SHA256

7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9
SHA512

d894bb452e05548a757bfbd8ddc0c3b55686690923ca01c58e68d399afe88d5d013076fcf83fcb51483e887373ad5bc76671998b3b738cd01c5752511a10db63
SSDEEP

12288:EI0YglGokRtZYxDuT5+tofxytZ4FbVjLfWJRuDnEFGuAY2eAuVLZEqhaH/e5rS++:EI0blXUEx4+ptZ4/WJAgHA8AuVLZEkLm

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 7 IoCs

Processes:

7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe

pid	Process
2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe
2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe
2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe
2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe
2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe
2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe
2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe

Drops file in System32 directory 1 IoCs

Processes:

7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Eritas.fat	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe

pid	Process
2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe
3764	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe

description	pid	Process	procid_target
PID 2716 set thread context of 3764	2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe	90

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:

7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe

pid	Process
2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe

description	pid	Process	procid_target
PID 2716 wrote to memory of 3764	2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe	90
PID 2716 wrote to memory of 3764	2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe	90
PID 2716 wrote to memory of 3764	2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe	90
PID 2716 wrote to memory of 3764	2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe	90
PID 2716 wrote to memory of 3764	2716	7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe	90

C:\Users\Admin\AppData\Local\Temp\7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe
"C:\Users\Admin\AppData\Local\Temp\7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Users\Admin\AppData\Local\Temp\7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe
  "C:\Users\Admin\AppData\Local\Temp\7263a8930afb910d367c5e228694a8c291c8f797e87c082583bcb425fdc525c9.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:3764

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsi8ED3.tmp\LangDLL.dll

Filesize
5KB

MD5
c5351b7c9aa48e9e7872288a3e7dd583

SHA1
69efcf341345625a4a855f03f2a9d9e8f50319b2

SHA256
982954ea90a10844bff23d595ac2449c6fae300aee2ab4c23077aac1197b7c2e

SHA512
6e655e02aa05bc52beec428686622c4c1c1ffc7e5aba0f6d429495cba29bee5733b26ac7aecbeaa9e525eae52706a2513035d17cc7b0ccbcf792c765c9427d7b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsi8ED3.tmp\System.dll

Filesize
11KB

MD5
c61501f07cf09bcfcdfe4cc8a1ebbbe3

SHA1
e8581b4359651b857646ae727efaaef372daa0fc

SHA256
7e75f148920db6300dad5a1c12fd5d6eecc95698a310a01311181bc98a704d55

SHA512
9837abe7ec3fa0f1f5193968d12b7ca1893e34eddf628db1f7ab6715b4de339231f0ec1b5f0f86c767f5a30c40da5c4a95e99deedd22eece93cb0d00539aad24

Download Submit
memory/2716-29-0x0000000004B30000-0x0000000007A5B000-memory.dmp

Filesize
47.2MB

Download
memory/2716-30-0x0000000004B30000-0x0000000007A5B000-memory.dmp

Filesize
47.2MB

Download
memory/2716-31-0x00000000775B1000-0x00000000776D1000-memory.dmp

Filesize
1.1MB

Download
memory/2716-32-0x00000000775B1000-0x00000000776D1000-memory.dmp

Filesize
1.1MB

Download
memory/2716-33-0x0000000074205000-0x0000000074206000-memory.dmp

Filesize
4KB

Download
memory/2716-42-0x0000000004B30000-0x0000000007A5B000-memory.dmp

Filesize
47.2MB

Download
memory/3764-34-0x00000000016E0000-0x000000000460B000-memory.dmp

Filesize
47.2MB

Download
memory/3764-35-0x0000000000480000-0x00000000016D4000-memory.dmp

Filesize
18.3MB

Download
memory/3764-36-0x00000000016E0000-0x000000000460B000-memory.dmp

Filesize
47.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads