guloader | e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38

Analysis

max time kernel
150s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
28-09-2024 01:58

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General

Target

e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
Size

795KB
MD5

50ad24c74502951d0bec1507ca050c46
SHA1

392235b1cf28c1e5e5c4ce98922b472d80fb8d0c
SHA256

e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38
SHA512

e06ac807482380f9b1986f1b064ee215716095aac4350d9427baeeda5a6bfc4a302b048788a3d187e9131620f032e0a6476cbff5f6db9eb2420a56ecbaade5d8
SSDEEP

24576:twh/C6tZbwDaudTLF9AMWR9hoRR7jKzjrh:twE6tZ6dT/A5ORlKzj1

Score

10^/10

guloader remcos remotehost collection discovery downloader rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

66.150.198.142:2700

66.150.198.142:27000

66.150.198.142:26000

66.150.198.142:28000

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
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-I617OK
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

Detected Nirsoft tools 10 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/1476-57-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4248-66-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4948-68-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4948-67-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4248-63-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4724-75-0x0000000000820000-0x0000000001A74000-memory.dmp	Nirsoft
behavioral2/memory/1476-77-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4724-84-0x0000000000820000-0x0000000001A74000-memory.dmp	Nirsoft
behavioral2/memory/4724-86-0x0000000000820000-0x0000000001A74000-memory.dmp	Nirsoft
behavioral2/memory/4724-87-0x0000000000820000-0x0000000001A74000-memory.dmp	Nirsoft

NirSoft MailPassView 5 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4248-66-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4248-63-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4724-75-0x0000000000820000-0x0000000001A74000-memory.dmp	MailPassView
behavioral2/memory/4724-86-0x0000000000820000-0x0000000001A74000-memory.dmp	MailPassView
behavioral2/memory/4724-87-0x0000000000820000-0x0000000001A74000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 5 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1476-57-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1476-77-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4724-84-0x0000000000820000-0x0000000001A74000-memory.dmp	WebBrowserPassView
behavioral2/memory/4724-86-0x0000000000820000-0x0000000001A74000-memory.dmp	WebBrowserPassView
behavioral2/memory/4724-87-0x0000000000820000-0x0000000001A74000-memory.dmp	WebBrowserPassView

Loads dropped DLL 2 IoCs

pid	Process
3472	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
3472	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

pid	Process
4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3472	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3472 set thread context of 4724	3472	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	87
PID 4724 set thread context of 1476	4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	90
PID 4724 set thread context of 4248	4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	91
PID 4724 set thread context of 4948	4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	92

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\flagrancies.pre	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\bestillingsformularer\subareal.uri	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.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 5 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	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1476	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
1476	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
4948	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
4948	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
1476	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
1476	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
3472	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4948	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3472 wrote to memory of 4724	3472	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	87
PID 3472 wrote to memory of 4724	3472	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	87
PID 3472 wrote to memory of 4724	3472	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	87
PID 3472 wrote to memory of 4724	3472	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	87
PID 3472 wrote to memory of 4724	3472	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	87
PID 4724 wrote to memory of 1476	4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	90
PID 4724 wrote to memory of 1476	4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	90
PID 4724 wrote to memory of 1476	4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	90
PID 4724 wrote to memory of 4248	4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	91
PID 4724 wrote to memory of 4248	4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	91
PID 4724 wrote to memory of 4248	4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	91
PID 4724 wrote to memory of 4948	4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	92
PID 4724 wrote to memory of 4948	4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	92
PID 4724 wrote to memory of 4948	4724	e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe	92

C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
"C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3472
- C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
  "C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4724
- - C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
    C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe /stext "C:\Users\Admin\AppData\Local\Temp\gyxyllmzcrzhawhpejoxb"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1476
- - C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
    C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe /stext "C:\Users\Admin\AppData\Local\Temp\qtcjmdxtqzrmdcdtnubzdaqut"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:4248
- - C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe
    C:\Users\Admin\AppData\Local\Temp\e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38.exe /stext "C:\Users\Admin\AppData\Local\Temp\tvpbmviuehjznrrxffosoeddcpll"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4948

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\gyxyllmzcrzhawhpejoxb

Filesize
4KB

MD5
1891919175c888ce82e9bd8a047b01ad

SHA1
502a6892a5d27ecb791ac5aa6d8586944f540453

SHA256
a6c43b4e4b8681cf0ef56c49c730fa77e34dc82db0260253a3ba75039030b9ec

SHA512
8bb940050b1abf6c27db133ed446f41e108f670f361ed5102408832ce33d9b87cd0880723441f1632292eeeb0a319c4e0fac0ea659eb55ebe1130cc3e6c776a3

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsr7D30.tmp\System.dll

Filesize
11KB

MD5
9625d5b1754bc4ff29281d415d27a0fd

SHA1
80e85afc5cccd4c0a3775edbb90595a1a59f5ce0

SHA256
c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448

SHA512
dce52b640897c2e8dbfd0a1472d5377fa91fb9cf1aeff62604d014bccbe5b56af1378f173132abeb0edd18c225b9f8f5e3d3e72434aed946661e036c779f165b

Download Submit
memory/1476-56-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1476-77-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1476-55-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1476-57-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3472-28-0x0000000077951000-0x0000000077A71000-memory.dmp

Filesize
1.1MB

Download
memory/3472-29-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/3472-27-0x0000000077951000-0x0000000077A71000-memory.dmp

Filesize
1.1MB

Download
memory/4248-58-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4248-62-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4248-63-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4248-66-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4724-89-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-75-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-44-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-45-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-46-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-47-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-49-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-50-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-51-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-52-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-53-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-54-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-37-0x0000000001A80000-0x000000000605B000-memory.dmp

Filesize
69.9MB

Download
memory/4724-42-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-69-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-105-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-72-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-104-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-41-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-103-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-102-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-40-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-39-0x0000000000854000-0x0000000000855000-memory.dmp

Filesize
4KB

Download
memory/4724-33-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-38-0x0000000077951000-0x0000000077A71000-memory.dmp

Filesize
1.1MB

Download
memory/4724-43-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-32-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-83-0x0000000036DA0000-0x0000000036DB9000-memory.dmp

Filesize
100KB

Download
memory/4724-84-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-82-0x0000000036DA0000-0x0000000036DB9000-memory.dmp

Filesize
100KB

Download
memory/4724-79-0x0000000036DA0000-0x0000000036DB9000-memory.dmp

Filesize
100KB

Download
memory/4724-31-0x00000000779F5000-0x00000000779F6000-memory.dmp

Filesize
4KB

Download
memory/4724-86-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-87-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-88-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-30-0x00000000779D8000-0x00000000779D9000-memory.dmp

Filesize
4KB

Download
memory/4724-90-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-91-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-92-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-93-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-94-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-95-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-97-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

Download
memory/4724-98-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

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memory/4724-99-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

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memory/4724-100-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

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memory/4724-101-0x0000000000820000-0x0000000001A74000-memory.dmp

Filesize
18.3MB

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memory/4948-64-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

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memory/4948-65-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

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memory/4948-67-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

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memory/4948-68-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

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