guloader | 0a7f62793ce40e99600c729a97d80c02b4f8c80d16c32f5edaa8a6eac48d416e

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
26-06-2024 20:22

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General

Target

z89PO25-06-2024orderlist_PDF.exe
Size

428KB
MD5

e6b91a52554e6adf43df0ffaa6b92d33
SHA1

4000722ce7f9445e068892b3ed80c9151f7e8a47
SHA256

0a7f62793ce40e99600c729a97d80c02b4f8c80d16c32f5edaa8a6eac48d416e
SHA512

ea228dea9d90b67ddcea115c181fd06f07385a3497adade0f957c539cf44327259d5a1a0e36b5abb333e1c29af359743011a02c5fc1adce2e4549409d8a95ff5
SSDEEP

12288:0JJz/7Ecm5WQVK69G14QIlQdBnVqS2xN9wR4:CxEx5WQM69z7QVqS4oG

Score

10^/10

guloader remcos remotehost collection downloader rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

204.10.160.132:2404

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
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-6UW0BP
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
NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients

Processes:

resource yara_rule

behavioral2/memory/2416-41-0x0000000000400000-0x0000000000462000-memory.dmp MailPassView
behavioral2/memory/2416-33-0x0000000000400000-0x0000000000462000-memory.dmp MailPassView

resource	yara_rule
behavioral2/memory/2416-41-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2416-33-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/692-40-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/692-32-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/692-48-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 7 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2256-42-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2416-41-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/692-40-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2256-36-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/692-32-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2416-33-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/692-48-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

Loads dropped DLL 1 IoCs

Processes:

z89PO25-06-2024orderlist_PDF.exe

pid process

5104 z89PO25-06-2024orderlist_PDF.exe
Reads user/profile data of web browsers 2 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
Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
collection

Email Collection
T1114

Processes:

z89PO25-06-2024orderlist_PDF.exe

description ioc process

Key opened \REGISTRY\USER\S-1-5-21-2447855248-390457009-3660902674-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts z89PO25-06-2024orderlist_PDF.exe
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

z89PO25-06-2024orderlist_PDF.exe

pid process

3964 z89PO25-06-2024orderlist_PDF.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

z89PO25-06-2024orderlist_PDF.exez89PO25-06-2024orderlist_PDF.exe

pid process

5104 z89PO25-06-2024orderlist_PDF.exe
3964 z89PO25-06-2024orderlist_PDF.exe

pid	process
5104	z89PO25-06-2024orderlist_PDF.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2447855248-390457009-3660902674-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	z89PO25-06-2024orderlist_PDF.exe

pid	process
3964	z89PO25-06-2024orderlist_PDF.exe

pid	process
5104	z89PO25-06-2024orderlist_PDF.exe
3964	z89PO25-06-2024orderlist_PDF.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

z89PO25-06-2024orderlist_PDF.exez89PO25-06-2024orderlist_PDF.exe

description	pid	process	target process
PID 5104 set thread context of 3964	5104	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 3964 set thread context of 692	3964	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 3964 set thread context of 2416	3964	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 3964 set thread context of 2256	3964	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe

Drops file in Program Files directory 1 IoCs

Processes:

z89PO25-06-2024orderlist_PDF.exe

description ioc process

File opened for modification C:\Program Files (x86)\Trichotomic38\Femhundredekronesedlers.dep z89PO25-06-2024orderlist_PDF.exe
Drops file in Windows directory 1 IoCs

Processes:

z89PO25-06-2024orderlist_PDF.exe

description ioc process

File opened for modification C:\Windows\resources\orion\Netkablerne.Pie z89PO25-06-2024orderlist_PDF.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Program Files (x86)\Trichotomic38\Femhundredekronesedlers.dep	z89PO25-06-2024orderlist_PDF.exe

description	ioc	process
File opened for modification	C:\Windows\resources\orion\Netkablerne.Pie	z89PO25-06-2024orderlist_PDF.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

z89PO25-06-2024orderlist_PDF.exez89PO25-06-2024orderlist_PDF.exe

pid	process
692	z89PO25-06-2024orderlist_PDF.exe
692	z89PO25-06-2024orderlist_PDF.exe
2256	z89PO25-06-2024orderlist_PDF.exe
2256	z89PO25-06-2024orderlist_PDF.exe
692	z89PO25-06-2024orderlist_PDF.exe
692	z89PO25-06-2024orderlist_PDF.exe

Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

z89PO25-06-2024orderlist_PDF.exez89PO25-06-2024orderlist_PDF.exe

pid process

5104 z89PO25-06-2024orderlist_PDF.exe
3964 z89PO25-06-2024orderlist_PDF.exe
3964 z89PO25-06-2024orderlist_PDF.exe
3964 z89PO25-06-2024orderlist_PDF.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

z89PO25-06-2024orderlist_PDF.exe

description pid process

Token: SeDebugPrivilege 2256 z89PO25-06-2024orderlist_PDF.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

z89PO25-06-2024orderlist_PDF.exe

pid process

3964 z89PO25-06-2024orderlist_PDF.exe

pid	process
5104	z89PO25-06-2024orderlist_PDF.exe
3964	z89PO25-06-2024orderlist_PDF.exe
3964	z89PO25-06-2024orderlist_PDF.exe
3964	z89PO25-06-2024orderlist_PDF.exe

description	pid	process
Token: SeDebugPrivilege	2256	z89PO25-06-2024orderlist_PDF.exe

pid	process
3964	z89PO25-06-2024orderlist_PDF.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

z89PO25-06-2024orderlist_PDF.exez89PO25-06-2024orderlist_PDF.exe

description	pid	process	target process
PID 5104 wrote to memory of 3964	5104	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 5104 wrote to memory of 3964	5104	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 5104 wrote to memory of 3964	5104	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 5104 wrote to memory of 3964	5104	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 5104 wrote to memory of 3964	5104	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 3964 wrote to memory of 692	3964	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 3964 wrote to memory of 692	3964	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 3964 wrote to memory of 692	3964	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 3964 wrote to memory of 2416	3964	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 3964 wrote to memory of 2416	3964	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 3964 wrote to memory of 2416	3964	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 3964 wrote to memory of 2256	3964	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 3964 wrote to memory of 2256	3964	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe
PID 3964 wrote to memory of 2256	3964	z89PO25-06-2024orderlist_PDF.exe	z89PO25-06-2024orderlist_PDF.exe

C:\Users\Admin\AppData\Local\Temp\z89PO25-06-2024orderlist_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\z89PO25-06-2024orderlist_PDF.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5104

C:\Users\Admin\AppData\Local\Temp\z89PO25-06-2024orderlist_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\z89PO25-06-2024orderlist_PDF.exe"
2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3964

C:\Users\Admin\AppData\Local\Temp\z89PO25-06-2024orderlist_PDF.exe
C:\Users\Admin\AppData\Local\Temp\z89PO25-06-2024orderlist_PDF.exe /stext "C:\Users\Admin\AppData\Local\Temp\bpgbvxkeeqkdbgzpacoxnl"
3⤵
- Suspicious behavior: EnumeratesProcesses
PID:692

C:\Users\Admin\AppData\Local\Temp\z89PO25-06-2024orderlist_PDF.exe
C:\Users\Admin\AppData\Local\Temp\z89PO25-06-2024orderlist_PDF.exe /stext "C:\Users\Admin\AppData\Local\Temp\mkmuwpvxsydiluvtkmbrypclvy"
3⤵
- Accesses Microsoft Outlook accounts
PID:2416

C:\Users\Admin\AppData\Local\Temp\z89PO25-06-2024orderlist_PDF.exe
C:\Users\Admin\AppData\Local\Temp\z89PO25-06-2024orderlist_PDF.exe /stext "C:\Users\Admin\AppData\Local\Temp\wmrmxigzggvnnajxbxvsbcwudmkkz"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2256

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\remcos\logs.dat
Filesize
144B

MD5
942c4bfb747a6cf4c87301980849e03b

SHA1
1c6502cac24a9ef940ab5b7cd8389aae3f74c8f4

SHA256
457c1650a8818fd02ecc9c947ede6f641a4dcb366adef9cfdba47877ed156d93

SHA512
ba72d89d32619d92f661e1f1134e371b00a30dc4183aea46373f13195bbb7b43ad50d4575fe3132ae67ec57f19841064d572df3824c1d9823814b987bf332b5f

Download Submit
C:\Users\Admin\AppData\Local\Temp\bpgbvxkeeqkdbgzpacoxnl
Filesize
4KB

MD5
042bbbff30c31fcbdd7f9b0ed3935ca5

SHA1
c333db2dceaf9a524147155c79756bc32eda6b03

SHA256
626ae16f54b4ca656b0267dade381d30bf042a06ba69b8851e33ab14da2bd9fe

SHA512
7f3a8eee89225ced48f8bc69d168713377e0316df3e46b544d9f7bc2c84305020eca3094c8246c8c934e22bd7643ae11f4a1560c3fe7aa717604869bcffa48fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsj377C.tmp\System.dll
Filesize
11KB

MD5
960a5c48e25cf2bca332e74e11d825c9

SHA1
da35c6816ace5daf4c6c1d57b93b09a82ecdc876

SHA256
484f8e9f194ed9016274ef3672b2c52ed5f574fb71d3884edf3c222b758a75a2

SHA512
cc450179e2d0d56aee2ccf8163d3882978c4e9c1aa3d3a95875fe9ba9831e07ddfd377111dc67f801fa53b6f468a418f086f1de7c71e0a5b634e1ae2a67cd3da

Download Submit
memory/692-48-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/692-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/692-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/692-40-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/692-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2256-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2256-34-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2256-36-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2256-42-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2416-31-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2416-33-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2416-41-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2416-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2416-66-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3964-69-0x0000000000450000-0x00000000016A4000-memory.dmp

Filesize
18.3MB

Download
memory/3964-62-0x0000000077791000-0x00000000778B1000-memory.dmp

Filesize
1.1MB

Download
memory/3964-20-0x0000000077818000-0x0000000077819000-memory.dmp

Filesize
4KB

Download
memory/3964-98-0x0000000000450000-0x00000000016A4000-memory.dmp

Filesize
18.3MB

Download
memory/3964-18-0x00000000016B0000-0x0000000003147000-memory.dmp

Filesize
26.6MB

Download
memory/3964-95-0x0000000000450000-0x00000000016A4000-memory.dmp

Filesize
18.3MB

Download
memory/3964-86-0x0000000000450000-0x00000000016A4000-memory.dmp

Filesize
18.3MB

Download
memory/3964-51-0x0000000034120000-0x0000000034139000-memory.dmp

Filesize
100KB

Download
memory/3964-54-0x0000000034120000-0x0000000034139000-memory.dmp

Filesize
100KB

Download
memory/3964-55-0x0000000034120000-0x0000000034139000-memory.dmp

Filesize
100KB

Download
memory/3964-57-0x0000000000450000-0x00000000016A4000-memory.dmp

Filesize
18.3MB

Download
memory/3964-59-0x00000000016B0000-0x0000000003147000-memory.dmp

Filesize
26.6MB

Download
memory/3964-60-0x0000000000450000-0x00000000016A4000-memory.dmp

Filesize
18.3MB

Download
memory/3964-21-0x0000000077835000-0x0000000077836000-memory.dmp

Filesize
4KB

Download
memory/3964-84-0x0000000000450000-0x00000000016A4000-memory.dmp

Filesize
18.3MB

Download
memory/3964-22-0x0000000000450000-0x00000000016A4000-memory.dmp

Filesize
18.3MB

Download
memory/3964-65-0x0000000000450000-0x00000000016A4000-memory.dmp

Filesize
18.3MB

Download
memory/3964-81-0x0000000000450000-0x00000000016A4000-memory.dmp

Filesize
18.3MB

Download
memory/3964-72-0x0000000000450000-0x00000000016A4000-memory.dmp

Filesize
18.3MB

Download
memory/3964-74-0x0000000000450000-0x00000000016A4000-memory.dmp

Filesize
18.3MB

Download
memory/3964-78-0x0000000000450000-0x00000000016A4000-memory.dmp

Filesize
18.3MB

Download
memory/5104-26-0x00000000049B0000-0x0000000006447000-memory.dmp

Filesize
26.6MB

Download
memory/5104-15-0x00000000049B0000-0x0000000006447000-memory.dmp

Filesize
26.6MB

Download
memory/5104-16-0x0000000077791000-0x00000000778B1000-memory.dmp

Filesize
1.1MB

Download
memory/5104-17-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/5104-19-0x00000000049B0000-0x0000000006447000-memory.dmp

Filesize
26.6MB

Download