guloader | 7d50cf849374accfefa5ec9afd4fbf6968e5291daee48bcdc2b8cd18dcd0a134

Analysis

max time kernel
8s
max time network
60s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
25-10-2023 16:49

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General

Target

NEAS.7d50cf849374accfefa5ec9afd4fbf6968e5291daee48bcdc2b8cd18dcd0a134exe_JC.exe
Size

1.2MB
MD5

de5645a11c23b5582274ecc72fe6aee2
SHA1

53cae379b37ec30fb8411192b26493653814cc10
SHA256

7d50cf849374accfefa5ec9afd4fbf6968e5291daee48bcdc2b8cd18dcd0a134
SHA512

7703efc3d281bd7e2d985c3d18c00b9965114dbed9c113f6e388c8223cc4dd411f6bd7f0e998ff46cdf3c3d2805f92191577a6fa34846ec773317bf95afd6dfa
SSDEEP

24576:ONgEFPPPPPPPPPPPPPZ6TwIdQn3IF6206HeZx6ZnALPiYSupWh6ocbaEXlPQJPkp:ogbwwQ3ktgEhALP2eWebaEXdQJMdL

Score

10^/10

guloader remcos crypted downloader rat

Malware Config

Extracted

Family

remcos

Botnet

Crypted

95.214.24.210:2404

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
keylog_crypt
false
keylog_file
ourytgbh.dat
keylog_flag
false
keylog_path
%AppData%
mouse_option
false
mutex
puestodg-TE5TIH
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
take_screenshot_option
false
take_screenshot_time
5

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Loads dropped DLL 2 IoCs

Processes:

NEAS.7d50cf849374accfefa5ec9afd4fbf6968e5291daee48bcdc2b8cd18dcd0a134exe_JC.exe

pid	process
1776	NEAS.7d50cf849374accfefa5ec9afd4fbf6968e5291daee48bcdc2b8cd18dcd0a134exe_JC.exe
1776	NEAS.7d50cf849374accfefa5ec9afd4fbf6968e5291daee48bcdc2b8cd18dcd0a134exe_JC.exe

Drops file in Windows directory 1 IoCs

Processes:

NEAS.7d50cf849374accfefa5ec9afd4fbf6968e5291daee48bcdc2b8cd18dcd0a134exe_JC.exe

description	ioc	process
File opened for modification	C:\Windows\Beguilement137\biurea.flu	NEAS.7d50cf849374accfefa5ec9afd4fbf6968e5291daee48bcdc2b8cd18dcd0a134exe_JC.exe

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

System Information Discovery
T1082

C:\Users\Admin\AppData\Local\Temp\NEAS.7d50cf849374accfefa5ec9afd4fbf6968e5291daee48bcdc2b8cd18dcd0a134exe_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.7d50cf849374accfefa5ec9afd4fbf6968e5291daee48bcdc2b8cd18dcd0a134exe_JC.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
PID:1776

C:\Program Files (x86)\windows mail\wab.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.7d50cf849374accfefa5ec9afd4fbf6968e5291daee48bcdc2b8cd18dcd0a134exe_JC.exe"
2⤵
PID:4416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nspD0DF.tmp\System.dll
Filesize
11KB

MD5
0ff2d70cfdc8095ea99ca2dabbec3cd7

SHA1
10c51496d37cecd0e8a503a5a9bb2329d9b38116

SHA256
982c5fb7ada7d8c9bc3e419d1c35da6f05bc5dd845940c179af3a33d00a36a8b

SHA512
cb5fc0b3194f469b833c2c9abf493fcec5251e8609881b7f5e095b9bd09ed468168e95dda0ba415a7d8d6b7f0dee735467c0ed8e52b223eb5359986891ba6e2e

Download Submit
C:\Users\Admin\AppData\Local\Temp\nspD0DF.tmp\System.dll
Filesize
11KB

MD5
0ff2d70cfdc8095ea99ca2dabbec3cd7

SHA1
10c51496d37cecd0e8a503a5a9bb2329d9b38116

SHA256
982c5fb7ada7d8c9bc3e419d1c35da6f05bc5dd845940c179af3a33d00a36a8b

SHA512
cb5fc0b3194f469b833c2c9abf493fcec5251e8609881b7f5e095b9bd09ed468168e95dda0ba415a7d8d6b7f0dee735467c0ed8e52b223eb5359986891ba6e2e

Download Submit
C:\Users\Admin\AppData\Local\Temp\nspD0DF.tmp\System.dll
Filesize
11KB

MD5
0ff2d70cfdc8095ea99ca2dabbec3cd7

SHA1
10c51496d37cecd0e8a503a5a9bb2329d9b38116

SHA256
982c5fb7ada7d8c9bc3e419d1c35da6f05bc5dd845940c179af3a33d00a36a8b

SHA512
cb5fc0b3194f469b833c2c9abf493fcec5251e8609881b7f5e095b9bd09ed468168e95dda0ba415a7d8d6b7f0dee735467c0ed8e52b223eb5359986891ba6e2e

Download Submit
memory/1776-22-0x0000000003370000-0x0000000004AA0000-memory.dmp

Filesize
23.2MB

Download
memory/1776-23-0x0000000003370000-0x0000000004AA0000-memory.dmp

Filesize
23.2MB

Download
memory/1776-24-0x00000000770B1000-0x00000000771D1000-memory.dmp

Filesize
1.1MB

Download
memory/1776-25-0x0000000010000000-0x0000000010006000-memory.dmp

Filesize
24KB

Download
memory/4416-26-0x0000000000650000-0x0000000001D80000-memory.dmp

Filesize
23.2MB

Download
memory/4416-27-0x0000000000650000-0x0000000001D80000-memory.dmp

Filesize
23.2MB

Download
memory/4416-28-0x0000000077138000-0x0000000077139000-memory.dmp

Filesize
4KB

Download
memory/4416-29-0x00000000770B1000-0x00000000771D1000-memory.dmp

Filesize
1.1MB

Download
memory/4416-31-0x0000000072BE0000-0x0000000073E34000-memory.dmp

Filesize
18.3MB

Download
memory/4416-32-0x0000000000650000-0x0000000001D80000-memory.dmp

Filesize
23.2MB

Download
memory/4416-34-0x0000000072BE0000-0x0000000073E34000-memory.dmp

Filesize
18.3MB

Download
memory/4416-33-0x0000000000650000-0x0000000001D80000-memory.dmp

Filesize
23.2MB

Download