remcos | 02a1168ff52a8d0157d2896f2fa5278b96aea01a9f4cc4644232c538dcf0b38e

Analysis

max time kernel
299s
max time network
297s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-11-2024 15:45

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General

Target

036DCEA9AE308EE063N.exe
Size

887KB
MD5

20bb42ec983c9517933b0ab84ac294eb
SHA1

e04215ee38a26e19f178a66e16adeefb399bcc87
SHA256

ae2f2ffe00c0497e4c248998059dfe207f9a0fbcf5b06c432ffcf5fc5efe5110
SHA512

751555b05c01a8e5095806f61f924060ec60996af87e95eb558203345479c240228b28347a9605700eda4616e4dffeaabc091db50fc29f7d2099cfb7f3a494ca
SSDEEP

12288:AcAgFd9YiX0NkPgKKctyuOz8MNm4GSXTOjnEd1rtAEfGTY5YVqFJpeEMMqW5x1U:nAg98qPgKLio4dXTOzsRA4D4MqWP

Score

10^/10

remcos remotehost collection discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

mandope483.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-JPRNP1
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/1332-45-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/1108-37-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1484-44-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/1332-45-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral1/memory/1108-37-0x0000000000400000-0x0000000000478000-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
2580	powershell.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	vbc.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

036DCEA9AE308EE063N.exevbc.exe

description	pid	Process	procid_target
PID 2292 set thread context of 1896	2292	036DCEA9AE308EE063N.exe	33
PID 1896 set thread context of 1108	1896	vbc.exe	35
PID 1896 set thread context of 1332	1896	vbc.exe	36
PID 1896 set thread context of 1484	1896	vbc.exe	37

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:

powershell.exevbc.exevbc.exevbc.exevbc.exe036DCEA9AE308EE063N.exe

description	ioc	Process
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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	036DCEA9AE308EE063N.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exevbc.exe

pid	Process
2580	powershell.exe
1108	vbc.exe
1108	vbc.exe

Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

vbc.exe

pid	Process
1896	vbc.exe
1896	vbc.exe
1896	vbc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exevbc.exe

description	pid	Process
Token: SeDebugPrivilege	2580	powershell.exe
Token: SeDebugPrivilege	1484	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid	Process
1896	vbc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

036DCEA9AE308EE063N.exevbc.exe

description	pid	Process	procid_target
PID 2292 wrote to memory of 2580	2292	036DCEA9AE308EE063N.exe	31
PID 2292 wrote to memory of 2580	2292	036DCEA9AE308EE063N.exe	31
PID 2292 wrote to memory of 2580	2292	036DCEA9AE308EE063N.exe	31
PID 2292 wrote to memory of 2580	2292	036DCEA9AE308EE063N.exe	31
PID 2292 wrote to memory of 1896	2292	036DCEA9AE308EE063N.exe	33
PID 2292 wrote to memory of 1896	2292	036DCEA9AE308EE063N.exe	33
PID 2292 wrote to memory of 1896	2292	036DCEA9AE308EE063N.exe	33
PID 2292 wrote to memory of 1896	2292	036DCEA9AE308EE063N.exe	33
PID 2292 wrote to memory of 1896	2292	036DCEA9AE308EE063N.exe	33
PID 2292 wrote to memory of 1896	2292	036DCEA9AE308EE063N.exe	33
PID 2292 wrote to memory of 1896	2292	036DCEA9AE308EE063N.exe	33
PID 2292 wrote to memory of 1896	2292	036DCEA9AE308EE063N.exe	33
PID 2292 wrote to memory of 1896	2292	036DCEA9AE308EE063N.exe	33
PID 2292 wrote to memory of 1896	2292	036DCEA9AE308EE063N.exe	33
PID 2292 wrote to memory of 1896	2292	036DCEA9AE308EE063N.exe	33
PID 1896 wrote to memory of 1108	1896	vbc.exe	35
PID 1896 wrote to memory of 1108	1896	vbc.exe	35
PID 1896 wrote to memory of 1108	1896	vbc.exe	35
PID 1896 wrote to memory of 1108	1896	vbc.exe	35
PID 1896 wrote to memory of 1108	1896	vbc.exe	35
PID 1896 wrote to memory of 1332	1896	vbc.exe	36
PID 1896 wrote to memory of 1332	1896	vbc.exe	36
PID 1896 wrote to memory of 1332	1896	vbc.exe	36
PID 1896 wrote to memory of 1332	1896	vbc.exe	36
PID 1896 wrote to memory of 1332	1896	vbc.exe	36
PID 1896 wrote to memory of 1484	1896	vbc.exe	37
PID 1896 wrote to memory of 1484	1896	vbc.exe	37
PID 1896 wrote to memory of 1484	1896	vbc.exe	37
PID 1896 wrote to memory of 1484	1896	vbc.exe	37
PID 1896 wrote to memory of 1484	1896	vbc.exe	37

C:\Users\Admin\AppData\Local\Temp\036DCEA9AE308EE063N.exe
"C:\Users\Admin\AppData\Local\Temp\036DCEA9AE308EE063N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2292
- 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\036DCEA9AE308EE063N.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2580
- 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:1896
- - 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\wanakwuqcgfxlfugoaxzjzrsmojlsuep"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1108
- - 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\gvssl"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:1332
- - 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\qxydlhpl"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:1484

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
d5c9c7dc825e5de95ebfdd5dcf96b311

SHA1
d3c96bd5674a329b9572dd7bc79a9f1966407412

SHA256
f522620fc8f8f2797e544c03ff6948c331ea90b069eef45d2c5b80eaaf8bd399

SHA512
3cb160c60f6562fc688b0a402e36cbf704adaddc7dce5d5133614a79664904448071fc7c74356ee2642d1054fb0905a318aef61e12158d66f516301d157def96

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/1108-35-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1108-36-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1108-37-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1332-40-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1332-39-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1332-45-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1484-42-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1484-44-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1484-43-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1896-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-127-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-120-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-8-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-10-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-14-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1896-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-119-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-112-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-111-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-6-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-53-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1896-57-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1896-56-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1896-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-96-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-87-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1896-95-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2292-1-0x00000000002A0000-0x0000000000384000-memory.dmp

Filesize
912KB

Download
memory/2292-2-0x0000000073CC0000-0x00000000743AE000-memory.dmp

Filesize
6.9MB

Download
memory/2292-3-0x0000000000390000-0x00000000003A2000-memory.dmp

Filesize
72KB

Download
memory/2292-4-0x0000000073CC0000-0x00000000743AE000-memory.dmp

Filesize
6.9MB

Download
memory/2292-5-0x0000000005140000-0x0000000005204000-memory.dmp

Filesize
784KB

Download
memory/2292-26-0x0000000073CC0000-0x00000000743AE000-memory.dmp

Filesize
6.9MB

Download
memory/2292-0-0x0000000073CCE000-0x0000000073CCF000-memory.dmp

Filesize
4KB

Download