guloader | 3058943ae31559238e25e88e6dfbba109ba0848c129a9742795797337f27bf3e

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
26/03/2025, 16:08

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General

Target

PO_5063588533982668888839393665187368.exe
Size

1.4MB
MD5

07ebe75a608e5afd94a06bc865f6eb71
SHA1

6501f07c81528541bf3efd4a103d3a19d1ddbcb4
SHA256

f5e0b21161bfe9a8f8805186f8124f81e12c5430b82efdc1743b0ed343a5a4dd
SHA512

7f68c2ecdabaaa61a8a64c5a226e00161e5be35e8ca3a82453fb8e89146342e3ce2b410c222dc20a7bf0bf00b41008ab9faa689ebea4d659b5b1337205409336
SSDEEP

24576:vuMVMzHC/rDrAoD48AT9Ndd8loPwtJhUADiiB2Lln/bsOgAdjv0LZiV:vuM0HC/r11yNdCGPsPUGIngABvKU

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 1 IoCs

pid	Process
1740	PO_5063588533982668888839393665187368.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1740	PO_5063588533982668888839393665187368.exe
2776	PO_5063588533982668888839393665187368.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	PO_5063588533982668888839393665187368.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO_5063588533982668888839393665187368.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1740	PO_5063588533982668888839393665187368.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 2776	1740	PO_5063588533982668888839393665187368.exe	30
PID 1740 wrote to memory of 2776	1740	PO_5063588533982668888839393665187368.exe	30
PID 1740 wrote to memory of 2776	1740	PO_5063588533982668888839393665187368.exe	30
PID 1740 wrote to memory of 2776	1740	PO_5063588533982668888839393665187368.exe	30
PID 1740 wrote to memory of 2776	1740	PO_5063588533982668888839393665187368.exe	30

C:\Users\Admin\AppData\Local\Temp\PO_5063588533982668888839393665187368.exe
"C:\Users\Admin\AppData\Local\Temp\PO_5063588533982668888839393665187368.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Local\Temp\PO_5063588533982668888839393665187368.exe
  "C:\Users\Admin\AppData\Local\Temp\PO_5063588533982668888839393665187368.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2776

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

\Users\Admin\AppData\Local\Temp\nsd75DD.tmp\System.dll

Filesize
12KB

MD5
12b140583e3273ee1f65016becea58c4

SHA1
92df24d11797fefd2e1f8d29be9dfd67c56c1ada

SHA256
014f1dfeb842cf7265a3644bc6903c592abe9049bfc7396829172d3d72c4d042

SHA512
49ffdfa1941361430b6acb3555fd3aa05e4120f28cbdf7ceaa2af5937d0b8cccd84471cf63f06f97cf203b4aa20f226bdad082e9421b8e6b62ab6e1e9fc1e68a

Download Submit
memory/1740-24-0x0000000077991000-0x0000000077A92000-memory.dmp

Filesize
1.0MB

Download
memory/1740-25-0x0000000077990000-0x0000000077B39000-memory.dmp

Filesize
1.7MB

Download
memory/2776-26-0x00000000014C0000-0x0000000005673000-memory.dmp

Filesize
65.7MB

Download
memory/2776-27-0x0000000077990000-0x0000000077B39000-memory.dmp

Filesize
1.7MB

Download
memory/2776-28-0x0000000000450000-0x00000000014B2000-memory.dmp

Filesize
16.4MB

Download