remcos | 88d5cdd67e82686fc4a606bfaa71ec2a42451a58e3150414adfeb71f538caf88

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2024 09:20

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General

Target

order PO#001498.exe
Size

963KB
MD5

39daebf4d9be61e68ebd944ef63f7742
SHA1

6e2258c94edf37b96664b3a1ff35e567df95474b
SHA256

dd9ca58955222693e3411c828fb31e266c23d3da6edbe1eefcb069dfd0385781
SHA512

1b41deac17446d8bbcdb08dec75f31acc84bfba8afdf49d08aedee9fd07d7cf6a5695b53b411fcbe6be7d69b50a7add8877be71f2cb91cc9b16bf6896436a536
SSDEEP

24576:3CZCt4/yGC4wpoj7XFr4d/cLvYa/l+yY/UgCcSSIwjA:yZCttGC4wpojxEd/c3/VYRJSWj

Score

10^/10

remcos remotehost collection discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

ttalko.duckdns.org:59033

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-BEXAT2
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Detected Nirsoft tools 3 IoCs

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

Processes:

resource	yara_rule
behavioral2/memory/3604-83-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2012-81-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3076-80-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/3076-80-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/2012-81-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

4352 powershell.exe

pid	process
4352	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

order PO#001498.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	order PO#001498.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	vbc.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

order PO#001498.exevbc.exe

description	pid	process	target process
PID 2728 set thread context of 3104	2728	order PO#001498.exe	vbc.exe
PID 3104 set thread context of 2012	3104	vbc.exe	vbc.exe
PID 3104 set thread context of 3076	3104	vbc.exe	vbc.exe
PID 3104 set thread context of 3604	3104	vbc.exe	vbc.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 6 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:

vbc.exevbc.exevbc.exevbc.exeorder PO#001498.exepowershell.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	order PO#001498.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

powershell.exevbc.exevbc.exe

pid process

4352 powershell.exe
4352 powershell.exe
2012 vbc.exe
2012 vbc.exe
3604 vbc.exe
3604 vbc.exe
2012 vbc.exe
2012 vbc.exe
Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

vbc.exe

pid process

3104 vbc.exe
3104 vbc.exe
3104 vbc.exe
3104 vbc.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exevbc.exe

description pid process

Token: SeDebugPrivilege 4352 powershell.exe
Token: SeDebugPrivilege 3604 vbc.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

3104 vbc.exe

pid	process
4352	powershell.exe
4352	powershell.exe
2012	vbc.exe
2012	vbc.exe
3604	vbc.exe
3604	vbc.exe
2012	vbc.exe
2012	vbc.exe

pid	process
3104	vbc.exe
3104	vbc.exe
3104	vbc.exe
3104	vbc.exe

description	pid	process
Token: SeDebugPrivilege	4352	powershell.exe
Token: SeDebugPrivilege	3604	vbc.exe

pid	process
3104	vbc.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

order PO#001498.exevbc.exe

description	pid	process	target process
PID 2728 wrote to memory of 4352	2728	order PO#001498.exe	powershell.exe
PID 2728 wrote to memory of 4352	2728	order PO#001498.exe	powershell.exe
PID 2728 wrote to memory of 4352	2728	order PO#001498.exe	powershell.exe
PID 2728 wrote to memory of 3104	2728	order PO#001498.exe	vbc.exe
PID 2728 wrote to memory of 3104	2728	order PO#001498.exe	vbc.exe
PID 2728 wrote to memory of 3104	2728	order PO#001498.exe	vbc.exe
PID 2728 wrote to memory of 3104	2728	order PO#001498.exe	vbc.exe
PID 2728 wrote to memory of 3104	2728	order PO#001498.exe	vbc.exe
PID 2728 wrote to memory of 3104	2728	order PO#001498.exe	vbc.exe
PID 2728 wrote to memory of 3104	2728	order PO#001498.exe	vbc.exe
PID 2728 wrote to memory of 3104	2728	order PO#001498.exe	vbc.exe
PID 2728 wrote to memory of 3104	2728	order PO#001498.exe	vbc.exe
PID 2728 wrote to memory of 3104	2728	order PO#001498.exe	vbc.exe
PID 3104 wrote to memory of 2012	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 2012	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 2012	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 2012	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 3536	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 3536	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 3536	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 3076	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 3076	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 3076	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 3076	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 3604	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 3604	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 3604	3104	vbc.exe	vbc.exe
PID 3104 wrote to memory of 3604	3104	vbc.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\order PO#001498.exe
"C:\Users\Admin\AppData\Local\Temp\order PO#001498.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2728
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\order PO#001498.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4352
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3104
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\nwjlkvbuilpyewjfcqqccbpvoqbt"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2012
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\qypdlnloeuhdokfrlbdvngcmxwlczip"
    3⤵
    PID:3536
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\qypdlnloeuhdokfrlbdvngcmxwlczip"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:3076
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\atcwmfwpscziqqtvclpxqtwvyddlstgiwb"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
927487e4f7bdebf7bf2f92d93cb355cd

SHA1
49cb6011022f12e1eb5c25f695819773f262b2a4

SHA256
b8d735c0c2dbdb3615f9cfaa9e63d6e694e4817be2b932e879477e1f742a2023

SHA512
31123eccede7c19571fa7e6c80ba9d3a6537c53e746e783350d9d613ea95bd31dcd05284c0f76740b9ca6f66706cc03a63a6418e50ba14f08fca24828592a7b4

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3qxawwze.ypk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\nwjlkvbuilpyewjfcqqccbpvoqbt

Filesize
4KB

MD5
16dfb23eaa7972c59c36fcbc0946093b

SHA1
1e9e3ff83a05131575f67e202d352709205f20f8

SHA256
36c49c94327c8cadcad4c0d2b3a8f5162fc7bb86624923484476c5f7b960bc4c

SHA512
a8b38b5e7bf886b78c5c7f01234b44647a252d4dfbcc06c99b863f8e160e3cfc151b2a83b8b49e09d13e8547419467da4bffbb8dee5fc6740032eb7c839d89dc

Download Submit
memory/2012-81-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2012-77-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2012-75-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2728-10-0x00000000078F0000-0x00000000079B4000-memory.dmp

Filesize
784KB

Download
memory/2728-3-0x0000000004DE0000-0x0000000004E72000-memory.dmp

Filesize
584KB

Download
memory/2728-8-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download
memory/2728-9-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2728-6-0x0000000004DA0000-0x0000000004DAA000-memory.dmp

Filesize
40KB

Download
memory/2728-5-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2728-4-0x0000000004E80000-0x0000000004F1C000-memory.dmp

Filesize
624KB

Download
memory/2728-7-0x0000000005360000-0x000000000537C000-memory.dmp

Filesize
112KB

Download
memory/2728-1-0x00000000003E0000-0x00000000004D6000-memory.dmp

Filesize
984KB

Download
memory/2728-24-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/2728-2-0x0000000005390000-0x0000000005934000-memory.dmp

Filesize
5.6MB

Download
memory/2728-0-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download
memory/3076-76-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3076-79-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3076-80-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3104-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-111-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-96-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-94-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-92-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3104-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-93-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3104-110-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-89-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3104-126-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-127-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3104-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3604-83-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3604-82-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3604-78-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4352-22-0x0000000005A20000-0x0000000006048000-memory.dmp

Filesize
6.2MB

Download
memory/4352-72-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/4352-69-0x0000000007DB0000-0x0000000007DB8000-memory.dmp

Filesize
32KB

Download
memory/4352-68-0x0000000007DD0000-0x0000000007DEA000-memory.dmp

Filesize
104KB

Download
memory/4352-67-0x0000000007CD0000-0x0000000007CE4000-memory.dmp

Filesize
80KB

Download
memory/4352-66-0x0000000007CC0000-0x0000000007CCE000-memory.dmp

Filesize
56KB

Download
memory/4352-65-0x0000000007C90000-0x0000000007CA1000-memory.dmp

Filesize
68KB

Download
memory/4352-64-0x0000000007D10000-0x0000000007DA6000-memory.dmp

Filesize
600KB

Download
memory/4352-61-0x0000000007B00000-0x0000000007B0A000-memory.dmp

Filesize
40KB

Download
memory/4352-60-0x0000000007A90000-0x0000000007AAA000-memory.dmp

Filesize
104KB

Download
memory/4352-58-0x00000000080D0000-0x000000000874A000-memory.dmp

Filesize
6.5MB

Download
memory/4352-56-0x0000000007990000-0x0000000007A33000-memory.dmp

Filesize
652KB

Download
memory/4352-55-0x0000000006D30000-0x0000000006D4E000-memory.dmp

Filesize
120KB

Download
memory/4352-44-0x0000000006DA0000-0x0000000006DD2000-memory.dmp

Filesize
200KB

Download
memory/4352-45-0x00000000712C0000-0x000000007130C000-memory.dmp

Filesize
304KB

Download
memory/4352-41-0x0000000006800000-0x000000000684C000-memory.dmp

Filesize
304KB

Download
memory/4352-40-0x0000000006770000-0x000000000678E000-memory.dmp

Filesize
120KB

Download
memory/4352-39-0x00000000061B0000-0x0000000006504000-memory.dmp

Filesize
3.3MB

Download
memory/4352-29-0x0000000006140000-0x00000000061A6000-memory.dmp

Filesize
408KB

Download
memory/4352-28-0x0000000005940000-0x00000000059A6000-memory.dmp

Filesize
408KB

Download
memory/4352-27-0x00000000056A0000-0x00000000056C2000-memory.dmp

Filesize
136KB

Download
memory/4352-25-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/4352-19-0x0000000002E40000-0x0000000002E76000-memory.dmp

Filesize
216KB

Download
memory/4352-21-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download
memory/4352-23-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download