remcos | 88d5cdd67e82686fc4a606bfaa71ec2a42451a58e3150414adfeb71f538caf88

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-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
behavioral1/memory/3060-50-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2628-49-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1416-48-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/1416-48-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral1/memory/2628-49-0x0000000000400000-0x0000000000478000-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

1256 powershell.exe
Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

pid	process
1256	powershell.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\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 1644 set thread context of 2388	1644	order PO#001498.exe	vbc.exe
PID 2388 set thread context of 2628	2388	vbc.exe	vbc.exe
PID 2388 set thread context of 1416	2388	vbc.exe	vbc.exe
PID 2388 set thread context of 3060	2388	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:

order PO#001498.exepowershell.exevbc.exevbc.exevbc.exevbc.exe

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

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

order PO#001498.exepowershell.exevbc.exe

pid process

1644 order PO#001498.exe
1644 order PO#001498.exe
1256 powershell.exe
2628 vbc.exe
2628 vbc.exe
Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

vbc.exe

pid process

2388 vbc.exe
2388 vbc.exe
2388 vbc.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

order PO#001498.exepowershell.exevbc.exe

description pid process

Token: SeDebugPrivilege 1644 order PO#001498.exe
Token: SeDebugPrivilege 1256 powershell.exe
Token: SeDebugPrivilege 3060 vbc.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

2388 vbc.exe

pid	process
1644	order PO#001498.exe
1644	order PO#001498.exe
1256	powershell.exe
2628	vbc.exe
2628	vbc.exe

pid	process
2388	vbc.exe
2388	vbc.exe
2388	vbc.exe

description	pid	process
Token: SeDebugPrivilege	1644	order PO#001498.exe
Token: SeDebugPrivilege	1256	powershell.exe
Token: SeDebugPrivilege	3060	vbc.exe

pid	process
2388	vbc.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

order PO#001498.exevbc.exe

description	pid	process	target process
PID 1644 wrote to memory of 1256	1644	order PO#001498.exe	powershell.exe
PID 1644 wrote to memory of 1256	1644	order PO#001498.exe	powershell.exe
PID 1644 wrote to memory of 1256	1644	order PO#001498.exe	powershell.exe
PID 1644 wrote to memory of 1256	1644	order PO#001498.exe	powershell.exe
PID 1644 wrote to memory of 2824	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2824	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2824	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2824	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2388	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2388	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2388	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2388	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2388	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2388	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2388	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2388	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2388	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2388	1644	order PO#001498.exe	vbc.exe
PID 1644 wrote to memory of 2388	1644	order PO#001498.exe	vbc.exe
PID 2388 wrote to memory of 2628	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 2628	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 2628	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 2628	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 2628	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 1416	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 1416	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 1416	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 1416	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 1416	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 3060	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 3060	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 3060	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 3060	2388	vbc.exe	vbc.exe
PID 2388 wrote to memory of 3060	2388	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⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1644
- 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:1256
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:2824
- 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:2388
- - 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\whkttxpaxiy"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2628
- - 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\yjpluqzclqqzeb"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:1416
- - 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\jeuwuikvzyimhpmsde"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:3060

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

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
1b3d06b745b416be84744429e1fdd2d0

SHA1
aae10f432a0e8cca452ccedd195caff40fc5619a

SHA256
e38bcc58030ebf57cb7e23571f630cd0d8b16a0954479c81e9f4af93a96d1cc7

SHA512
7e6ff0ae69155c74eeecb78582ad9290e0e4806b65ba6186d8eba7a4cec35ea59222947f3d01ca1cdfee29d943f63f1a0058753944a6f18b08a91ad724cfd54e

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/1416-41-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1416-48-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1416-45-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1644-4-0x000000007434E000-0x000000007434F000-memory.dmp

Filesize
4KB

Download
memory/1644-3-0x00000000004D0000-0x00000000004EC000-memory.dmp

Filesize
112KB

Download
memory/1644-5-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/1644-6-0x0000000005DA0000-0x0000000005E64000-memory.dmp

Filesize
784KB

Download
memory/1644-28-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/1644-2-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/1644-1-0x0000000000CA0000-0x0000000000D96000-memory.dmp

Filesize
984KB

Download
memory/1644-0-0x000000007434E000-0x000000007434F000-memory.dmp

Filesize
4KB

Download
memory/2388-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-61-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2388-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-17-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2388-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-92-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-93-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-85-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-84-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-58-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2388-62-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2388-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2388-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-46-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2628-49-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2628-39-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2628-38-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/3060-50-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3060-43-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3060-47-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download