guloader | 71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1a

Analysis

max time kernel
120s
max time network
111s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2024 14:15

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General

Target

71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe
Size

523KB
MD5

cd4f5f92ef04d249e8471549c4ba3250
SHA1

35188c3be48f92271e796acc41587b08cb9a1dd5
SHA256

71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1a
SHA512

2f3a93bf79eb60628746eab2b94a16592db0b5392c8b8eddeca07ede5c41a5fdfe9910a80633cfef71e6c0cf6fa2f36cef40a3ff611e7e9095d3bf39a276d326
SSDEEP

12288:IV62a2glYb8wUGif7N0VNmq4xYoST/Uz6WouzZ:Io2aJOAwUGmCVNX4Go6WoWZ

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
1156	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe
1156	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1156	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe
2940	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1156 set thread context of 2940	1156	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe	86

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\Trapezia146\Terminologien.faa	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.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	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1156	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1156 wrote to memory of 2940	1156	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe	86
PID 1156 wrote to memory of 2940	1156	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe	86
PID 1156 wrote to memory of 2940	1156	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe	86
PID 1156 wrote to memory of 2940	1156	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe	86
PID 1156 wrote to memory of 2940	1156	71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe	86

C:\Users\Admin\AppData\Local\Temp\71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe
"C:\Users\Admin\AppData\Local\Temp\71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1156
- C:\Users\Admin\AppData\Local\Temp\71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe
  "C:\Users\Admin\AppData\Local\Temp\71c06e318241522ac21375788b946b0f035226c53fa88c7abd53a6a9c42a0b1aN.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2940

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\nswCAB3.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
memory/1156-13-0x0000000004590000-0x0000000005C4B000-memory.dmp

Filesize
22.7MB

Download
memory/1156-14-0x0000000077E31000-0x0000000077F51000-memory.dmp

Filesize
1.1MB

Download
memory/1156-15-0x0000000074C95000-0x0000000074C96000-memory.dmp

Filesize
4KB

Download
memory/1156-16-0x0000000004590000-0x0000000005C4B000-memory.dmp

Filesize
22.7MB

Download
memory/1156-37-0x0000000004590000-0x0000000005C4B000-memory.dmp

Filesize
22.7MB

Download
memory/2940-17-0x0000000001A60000-0x000000000311B000-memory.dmp

Filesize
22.7MB

Download
memory/2940-18-0x0000000077EB8000-0x0000000077EB9000-memory.dmp

Filesize
4KB

Download
memory/2940-20-0x0000000001A60000-0x000000000311B000-memory.dmp

Filesize
22.7MB

Download
memory/2940-30-0x0000000000800000-0x0000000001A54000-memory.dmp

Filesize
18.3MB

Download
memory/2940-31-0x0000000077E31000-0x0000000077F51000-memory.dmp

Filesize
1.1MB

Download