guloader | 71afac4f513f72e9e14993cc3a4cb4964fe4486e1b2f139cab7b89924f7aed44

General

Target

e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe
Size

851KB
MD5

629be165860d2336755de85467756639
SHA1

af1da57d01a00bf942e127cce60fb4208bfd9795
SHA256

e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c
SHA512

418f56a804212158033b1ae592cafeb8fa1c5a0d9506eb541beb7762c23ebfe5c61dbac8588c350816c229e9f6d77457e361423146874695976c1b8d9267cbff
SSDEEP

24576:ZNAsPMh+Cdd8509puHmATonQ1htKzWbGWO:dPMvA509pkonAhtHbnO

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

Processes:

e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe

pid	process
2552	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe
2552	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exee9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe

pid	process
2552	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe
2500	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe

description	pid	process	target process
PID 2552 set thread context of 2500	2552	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.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

Processes:

e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exee9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe

pid process

2552 e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe

description	pid	process	target process
PID 2552 wrote to memory of 2500	2552	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe
PID 2552 wrote to memory of 2500	2552	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe
PID 2552 wrote to memory of 2500	2552	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe
PID 2552 wrote to memory of 2500	2552	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe
PID 2552 wrote to memory of 2500	2552	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe
PID 2552 wrote to memory of 2500	2552	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe	e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe

C:\Users\Admin\AppData\Local\Temp\e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe
"C:\Users\Admin\AppData\Local\Temp\e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.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:2552
- C:\Users\Admin\AppData\Local\Temp\e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe
  "C:\Users\Admin\AppData\Local\Temp\e9617a78c93e6d5cdc1087dfa6e9bf9d63406e05b6b01135c189242a7c33718c.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2500

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

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\nsdCD00.tmp\System.dll

Filesize
11KB

MD5
be2621a78a13a56cf09e00dd98488360

SHA1
75f0539dc6af200a07cdb056cddddec595c6cfd2

SHA256
852047023ba0cae91c7a43365878613cfb4e64e36ff98c460e113d5088d68ef5

SHA512
b80cf1f678e6885276b9a1bfd9227374b2eb9e38bb20446d52ebe2c3dba89764aa50cb4d49df51a974478f3364b5dbcbc5b4a16dc8f1123b40c89c01725be3d1

Download Submit
memory/2500-34-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2500-36-0x00000000777F0000-0x0000000077999000-memory.dmp

Filesize
1.7MB

Download
memory/2500-37-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2552-31-0x00000000035E0000-0x0000000004B85000-memory.dmp

Filesize
21.6MB

Download
memory/2552-33-0x00000000777F0000-0x0000000077999000-memory.dmp

Filesize
1.7MB

Download
memory/2552-32-0x00000000777F1000-0x00000000778F2000-memory.dmp

Filesize
1.0MB

Download
memory/2552-35-0x00000000035E0000-0x0000000004B85000-memory.dmp

Filesize
21.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads