guloader | e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-12-2024 13:11

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General

Target

Factura 9000012567.exe
Size

419KB
MD5

1194e870e252e43b41cc724c1c7a987e
SHA1

e7a95416ebc253d9fe01fb3c90c6fa713143436d
SHA256

e284501ae59fcc3f04a7494637a3ae8ff5bb223e333f7c25cbedd322893d5367
SHA512

d88e334a88740a5d71666757bc5309414deefe82c4bd601ea9d7dec1fc54cead898f750215028fef8026b7a948a7f184e4b06a0c9eb6e99e0ad55b014733b101
SSDEEP

12288:bch7SSzvYNxbs0V0utVFWN5yUBHWpwyx9fag6vI:bqvv2Vx0urqwg4xyrvI

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
540	Factura 9000012567.exe
540	Factura 9000012567.exe

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

Web Service

T1102

flow	ioc
4	drive.google.com
5	drive.google.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
540	Factura 9000012567.exe
1812	Factura 9000012567.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 540 set thread context of 1812	540	Factura 9000012567.exe	31

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2676	1812	WerFault.exe	31

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	Factura 9000012567.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Factura 9000012567.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
540	Factura 9000012567.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 1812	540	Factura 9000012567.exe	31
PID 540 wrote to memory of 1812	540	Factura 9000012567.exe	31
PID 540 wrote to memory of 1812	540	Factura 9000012567.exe	31
PID 540 wrote to memory of 1812	540	Factura 9000012567.exe	31
PID 540 wrote to memory of 1812	540	Factura 9000012567.exe	31
PID 540 wrote to memory of 1812	540	Factura 9000012567.exe	31
PID 1812 wrote to memory of 2676	1812	Factura 9000012567.exe	33
PID 1812 wrote to memory of 2676	1812	Factura 9000012567.exe	33
PID 1812 wrote to memory of 2676	1812	Factura 9000012567.exe	33
PID 1812 wrote to memory of 2676	1812	Factura 9000012567.exe	33

C:\Users\Admin\AppData\Local\Temp\Factura 9000012567.exe
"C:\Users\Admin\AppData\Local\Temp\Factura 9000012567.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:540
- C:\Users\Admin\AppData\Local\Temp\Factura 9000012567.exe
  "C:\Users\Admin\AppData\Local\Temp\Factura 9000012567.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1812
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1812 -s 1324
    3⤵
    - Program crash
    PID:2676

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

Web Service

T1102

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nstD682.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/540-14-0x0000000003730000-0x00000000040FB000-memory.dmp

Filesize
9.8MB

Download
memory/540-16-0x0000000077130000-0x00000000772D9000-memory.dmp

Filesize
1.7MB

Download
memory/540-15-0x0000000077131000-0x0000000077232000-memory.dmp

Filesize
1.0MB

Download
memory/540-17-0x0000000003730000-0x00000000040FB000-memory.dmp

Filesize
9.8MB

Download
memory/1812-18-0x0000000077130000-0x00000000772D9000-memory.dmp

Filesize
1.7MB

Download
memory/1812-38-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download