guloader | dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100

Analysis

max time kernel
146s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-12-2024 03:46

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General

Target

dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe
Size

530KB
MD5

67d75bb670fc40d5a7b404bc55fed626
SHA1

e1e084cf07b55f06d7e03d815ca0e0a4775333e7
SHA256

dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100
SHA512

b045020b63bc8728f431e10ba273fdbe2658c9efc325ab75dd31ac83d343d51925bde26fec7ae9b4eaef343ed311442930e8710344c36994327d8fe800453952
SSDEEP

12288:kcAVddRgtwamaqxOUrIj15nW5jf8zHaM9I31BiXEHnW:Sddiz0OAY5nW5jf82ziXE2

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
968	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe
968	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\mnttelefonerne.Mes	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
968	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe
3528	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 968 set thread context of 3528	968	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe	84

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\hebraisation.ini	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.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	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
968	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 968 wrote to memory of 3528	968	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe	84
PID 968 wrote to memory of 3528	968	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe	84
PID 968 wrote to memory of 3528	968	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe	84
PID 968 wrote to memory of 3528	968	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe	84
PID 968 wrote to memory of 3528	968	dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe	84

C:\Users\Admin\AppData\Local\Temp\dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe
"C:\Users\Admin\AppData\Local\Temp\dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- 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:968
- C:\Users\Admin\AppData\Local\Temp\dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe
  "C:\Users\Admin\AppData\Local\Temp\dd37002352fdc8e8a56a23ea19ba146f907d3d807f1ac0131954cf0922a2a100.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:3528

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\nsq95A9.tmp\System.dll

Filesize
11KB

MD5
b8992e497d57001ddf100f9c397fcef5

SHA1
e26ddf101a2ec5027975d2909306457c6f61cfbd

SHA256
98bcd1dd88642f4dd36a300c76ebb1ddfbbbc5bfc7e3b6d7435dc6d6e030c13b

SHA512
8823b1904dccfaf031068102cb1def7958a057f49ff369f0e061f1b4db2090021aa620bb8442a2a6ac9355bb74ee54371dc2599c20dc723755a46ede81533a3c

Download Submit
memory/968-25-0x0000000005340000-0x0000000007405000-memory.dmp

Filesize
32.8MB

Download
memory/968-26-0x0000000077E21000-0x0000000077F41000-memory.dmp

Filesize
1.1MB

Download
memory/968-27-0x0000000005340000-0x0000000007405000-memory.dmp

Filesize
32.8MB

Download
memory/968-29-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/968-37-0x0000000005340000-0x0000000007405000-memory.dmp

Filesize
32.8MB

Download
memory/3528-28-0x00000000016C0000-0x0000000003785000-memory.dmp

Filesize
32.8MB

Download
memory/3528-30-0x00000000016C0000-0x0000000003785000-memory.dmp

Filesize
32.8MB

Download
memory/3528-31-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download