guloader | e4ed3892cc2c77e7de57a5fc47040118740b1a672747f72193ed065570a55b38

Analysis

max time kernel
149s
max time network
141s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27/09/2024, 12:47

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General

Target

NutzenUnterschriftPlanen2024.com.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 12 IoCs

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

resource	yara_rule
behavioral1/memory/2552-44-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/1708-51-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/960-54-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/960-50-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/960-49-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2552-46-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2552-58-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/1292-62-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2568-71-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/940-74-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/1292-81-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1708-94-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 4 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2552-44-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2552-46-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2552-58-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/940-74-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 4 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/1708-51-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/1292-62-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/1292-81-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/1708-94-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Loads dropped DLL 2 IoCs

pid	Process
2052	NutzenUnterschriftPlanen2024.com.exe
2052	NutzenUnterschriftPlanen2024.com.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 2 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	NutzenUnterschriftPlanen2024.com.exe
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	NutzenUnterschriftPlanen2024.com.exe

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

pid	Process
2884	NutzenUnterschriftPlanen2024.com.exe
2884	NutzenUnterschriftPlanen2024.com.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2052	NutzenUnterschriftPlanen2024.com.exe
2884	NutzenUnterschriftPlanen2024.com.exe

Suspicious use of SetThreadContext 7 IoCs

description	pid	Process	procid_target
PID 2052 set thread context of 2884	2052	NutzenUnterschriftPlanen2024.com.exe	29
PID 2884 set thread context of 1708	2884	NutzenUnterschriftPlanen2024.com.exe	31
PID 2884 set thread context of 2552	2884	NutzenUnterschriftPlanen2024.com.exe	32
PID 2884 set thread context of 960	2884	NutzenUnterschriftPlanen2024.com.exe	33
PID 2884 set thread context of 1292	2884	NutzenUnterschriftPlanen2024.com.exe	34
PID 2884 set thread context of 940	2884	NutzenUnterschriftPlanen2024.com.exe	35
PID 2884 set thread context of 2568	2884	NutzenUnterschriftPlanen2024.com.exe	36

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\flagrancies.pre	NutzenUnterschriftPlanen2024.com.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\bestillingsformularer\subareal.uri	NutzenUnterschriftPlanen2024.com.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 8 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	NutzenUnterschriftPlanen2024.com.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NutzenUnterschriftPlanen2024.com.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NutzenUnterschriftPlanen2024.com.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NutzenUnterschriftPlanen2024.com.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NutzenUnterschriftPlanen2024.com.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NutzenUnterschriftPlanen2024.com.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NutzenUnterschriftPlanen2024.com.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NutzenUnterschriftPlanen2024.com.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1708	NutzenUnterschriftPlanen2024.com.exe
1292	NutzenUnterschriftPlanen2024.com.exe
1292	NutzenUnterschriftPlanen2024.com.exe
1708	NutzenUnterschriftPlanen2024.com.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2052	NutzenUnterschriftPlanen2024.com.exe
2884	NutzenUnterschriftPlanen2024.com.exe
2884	NutzenUnterschriftPlanen2024.com.exe
2884	NutzenUnterschriftPlanen2024.com.exe
2884	NutzenUnterschriftPlanen2024.com.exe
2884	NutzenUnterschriftPlanen2024.com.exe
2884	NutzenUnterschriftPlanen2024.com.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	960	NutzenUnterschriftPlanen2024.com.exe
Token: SeDebugPrivilege	2568	NutzenUnterschriftPlanen2024.com.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2052 wrote to memory of 2884	2052	NutzenUnterschriftPlanen2024.com.exe	29
PID 2052 wrote to memory of 2884	2052	NutzenUnterschriftPlanen2024.com.exe	29
PID 2052 wrote to memory of 2884	2052	NutzenUnterschriftPlanen2024.com.exe	29
PID 2052 wrote to memory of 2884	2052	NutzenUnterschriftPlanen2024.com.exe	29
PID 2052 wrote to memory of 2884	2052	NutzenUnterschriftPlanen2024.com.exe	29
PID 2052 wrote to memory of 2884	2052	NutzenUnterschriftPlanen2024.com.exe	29
PID 2884 wrote to memory of 1708	2884	NutzenUnterschriftPlanen2024.com.exe	31
PID 2884 wrote to memory of 1708	2884	NutzenUnterschriftPlanen2024.com.exe	31
PID 2884 wrote to memory of 1708	2884	NutzenUnterschriftPlanen2024.com.exe	31
PID 2884 wrote to memory of 1708	2884	NutzenUnterschriftPlanen2024.com.exe	31
PID 2884 wrote to memory of 2552	2884	NutzenUnterschriftPlanen2024.com.exe	32
PID 2884 wrote to memory of 2552	2884	NutzenUnterschriftPlanen2024.com.exe	32
PID 2884 wrote to memory of 2552	2884	NutzenUnterschriftPlanen2024.com.exe	32
PID 2884 wrote to memory of 2552	2884	NutzenUnterschriftPlanen2024.com.exe	32
PID 2884 wrote to memory of 960	2884	NutzenUnterschriftPlanen2024.com.exe	33
PID 2884 wrote to memory of 960	2884	NutzenUnterschriftPlanen2024.com.exe	33
PID 2884 wrote to memory of 960	2884	NutzenUnterschriftPlanen2024.com.exe	33
PID 2884 wrote to memory of 960	2884	NutzenUnterschriftPlanen2024.com.exe	33
PID 2884 wrote to memory of 1292	2884	NutzenUnterschriftPlanen2024.com.exe	34
PID 2884 wrote to memory of 1292	2884	NutzenUnterschriftPlanen2024.com.exe	34
PID 2884 wrote to memory of 1292	2884	NutzenUnterschriftPlanen2024.com.exe	34
PID 2884 wrote to memory of 1292	2884	NutzenUnterschriftPlanen2024.com.exe	34
PID 2884 wrote to memory of 940	2884	NutzenUnterschriftPlanen2024.com.exe	35
PID 2884 wrote to memory of 940	2884	NutzenUnterschriftPlanen2024.com.exe	35
PID 2884 wrote to memory of 940	2884	NutzenUnterschriftPlanen2024.com.exe	35
PID 2884 wrote to memory of 940	2884	NutzenUnterschriftPlanen2024.com.exe	35
PID 2884 wrote to memory of 2568	2884	NutzenUnterschriftPlanen2024.com.exe	36
PID 2884 wrote to memory of 2568	2884	NutzenUnterschriftPlanen2024.com.exe	36
PID 2884 wrote to memory of 2568	2884	NutzenUnterschriftPlanen2024.com.exe	36
PID 2884 wrote to memory of 2568	2884	NutzenUnterschriftPlanen2024.com.exe	36

C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe
"C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.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:2052
- C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe
  "C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.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:2884
- - C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe
    C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe /stext "C:\Users\Admin\AppData\Local\Temp\kvywguonvkqb"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1708
- - C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe
    C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe /stext "C:\Users\Admin\AppData\Local\Temp\npdhhmzgjsigyag"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2552
- - C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe
    C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe /stext "C:\Users\Admin\AppData\Local\Temp\xjrzhfjifaaljousok"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:960
- - C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe
    C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe /stext "C:\Users\Admin\AppData\Local\Temp\syfrelw"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1292
- - C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe
    C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe /stext "C:\Users\Admin\AppData\Local\Temp\cakjfehngf"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:940
- - C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe
    C:\Users\Admin\AppData\Local\Temp\NutzenUnterschriftPlanen2024.com.exe /stext "C:\Users\Admin\AppData\Local\Temp\euxufozpunowh"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2568

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\syfrelw

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
\Users\Admin\AppData\Local\Temp\nsz74B4.tmp\System.dll

Filesize
11KB

MD5
9625d5b1754bc4ff29281d415d27a0fd

SHA1
80e85afc5cccd4c0a3775edbb90595a1a59f5ce0

SHA256
c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448

SHA512
dce52b640897c2e8dbfd0a1472d5377fa91fb9cf1aeff62604d014bccbe5b56af1378f173132abeb0edd18c225b9f8f5e3d3e72434aed946661e036c779f165b

Download Submit
memory/940-74-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/960-54-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/960-47-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/960-48-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/960-49-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/960-50-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1292-81-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1292-62-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1708-40-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1708-45-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1708-51-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1708-94-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1708-43-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2052-30-0x00000000775F0000-0x0000000077799000-memory.dmp

Filesize
1.7MB

Download
memory/2052-29-0x00000000775F1000-0x00000000776F2000-memory.dmp

Filesize
1.0MB

Download
memory/2552-58-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2552-44-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2552-41-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2552-42-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2552-46-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2568-71-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2884-37-0x00000000775F0000-0x0000000077799000-memory.dmp

Filesize
1.7MB

Download
memory/2884-38-0x0000000001890000-0x0000000005E6B000-memory.dmp

Filesize
69.9MB

Download
memory/2884-33-0x0000000000820000-0x0000000001882000-memory.dmp

Filesize
16.4MB

Download
memory/2884-32-0x0000000000820000-0x0000000001882000-memory.dmp

Filesize
16.4MB

Download
memory/2884-87-0x0000000035AB0000-0x0000000035AC9000-memory.dmp

Filesize
100KB

Download
memory/2884-86-0x0000000035AB0000-0x0000000035AC9000-memory.dmp

Filesize
100KB

Download
memory/2884-83-0x0000000035AB0000-0x0000000035AC9000-memory.dmp

Filesize
100KB

Download
memory/2884-31-0x00000000775F0000-0x0000000077799000-memory.dmp

Filesize
1.7MB

Download