remcos | 02a1168ff52a8d0157d2896f2fa5278b96aea01a9f4cc4644232c538dcf0b38e

Analysis

max time kernel
297s
max time network
297s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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
behavioral2/memory/2664-97-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/5116-91-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3400-89-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/5116-91-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/3400-89-0x0000000000400000-0x0000000000478000-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

4380 powershell.exe

pid	process
4380	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:

036DCEA9AE308EE063N.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	036DCEA9AE308EE063N.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-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	vbc.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

036DCEA9AE308EE063N.exevbc.exe

description	pid	process	target process
PID 5032 set thread context of 4256	5032	036DCEA9AE308EE063N.exe	vbc.exe
PID 4256 set thread context of 3400	4256	vbc.exe	vbc.exe
PID 4256 set thread context of 5116	4256	vbc.exe	vbc.exe
PID 4256 set thread context of 2664	4256	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:

036DCEA9AE308EE063N.exepowershell.exevbc.exevbc.exevbc.exevbc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	036DCEA9AE308EE063N.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 8 IoCs

Processes:

powershell.exevbc.exevbc.exe

pid process

4380 powershell.exe
4380 powershell.exe
3400 vbc.exe
3400 vbc.exe
2664 vbc.exe
2664 vbc.exe
3400 vbc.exe
3400 vbc.exe
Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

vbc.exe

pid process

4256 vbc.exe
4256 vbc.exe
4256 vbc.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exevbc.exe

description pid process

Token: SeDebugPrivilege 4380 powershell.exe
Token: SeDebugPrivilege 2664 vbc.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

4256 vbc.exe

pid	process
4380	powershell.exe
4380	powershell.exe
3400	vbc.exe
3400	vbc.exe
2664	vbc.exe
2664	vbc.exe
3400	vbc.exe
3400	vbc.exe

pid	process
4256	vbc.exe
4256	vbc.exe
4256	vbc.exe

description	pid	process
Token: SeDebugPrivilege	4380	powershell.exe
Token: SeDebugPrivilege	2664	vbc.exe

pid	process
4256	vbc.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

036DCEA9AE308EE063N.exevbc.exe

description	pid	process	target process
PID 5032 wrote to memory of 4380	5032	036DCEA9AE308EE063N.exe	powershell.exe
PID 5032 wrote to memory of 4380	5032	036DCEA9AE308EE063N.exe	powershell.exe
PID 5032 wrote to memory of 4380	5032	036DCEA9AE308EE063N.exe	powershell.exe
PID 5032 wrote to memory of 4256	5032	036DCEA9AE308EE063N.exe	vbc.exe
PID 5032 wrote to memory of 4256	5032	036DCEA9AE308EE063N.exe	vbc.exe
PID 5032 wrote to memory of 4256	5032	036DCEA9AE308EE063N.exe	vbc.exe
PID 5032 wrote to memory of 4256	5032	036DCEA9AE308EE063N.exe	vbc.exe
PID 5032 wrote to memory of 4256	5032	036DCEA9AE308EE063N.exe	vbc.exe
PID 5032 wrote to memory of 4256	5032	036DCEA9AE308EE063N.exe	vbc.exe
PID 5032 wrote to memory of 4256	5032	036DCEA9AE308EE063N.exe	vbc.exe
PID 5032 wrote to memory of 4256	5032	036DCEA9AE308EE063N.exe	vbc.exe
PID 5032 wrote to memory of 4256	5032	036DCEA9AE308EE063N.exe	vbc.exe
PID 5032 wrote to memory of 4256	5032	036DCEA9AE308EE063N.exe	vbc.exe
PID 4256 wrote to memory of 3400	4256	vbc.exe	vbc.exe
PID 4256 wrote to memory of 3400	4256	vbc.exe	vbc.exe
PID 4256 wrote to memory of 3400	4256	vbc.exe	vbc.exe
PID 4256 wrote to memory of 3400	4256	vbc.exe	vbc.exe
PID 4256 wrote to memory of 5116	4256	vbc.exe	vbc.exe
PID 4256 wrote to memory of 5116	4256	vbc.exe	vbc.exe
PID 4256 wrote to memory of 5116	4256	vbc.exe	vbc.exe
PID 4256 wrote to memory of 5116	4256	vbc.exe	vbc.exe
PID 4256 wrote to memory of 2664	4256	vbc.exe	vbc.exe
PID 4256 wrote to memory of 2664	4256	vbc.exe	vbc.exe
PID 4256 wrote to memory of 2664	4256	vbc.exe	vbc.exe
PID 4256 wrote to memory of 2664	4256	vbc.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\036DCEA9AE308EE063N.exe
"C:\Users\Admin\AppData\Local\Temp\036DCEA9AE308EE063N.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5032
- 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:4380
- 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:4256
- - 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\wwkpecfhzmmvqoolexvvhykqpjstzdxdov"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:3400
- - 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\gqxifu"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:5116
- - 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\jscsgnaca"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2664

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
1631e416e28d9a71a94b2712f45abccb

SHA1
244807cbac541c49882a7af1ec2592939e61a4b8

SHA256
7c15e32b7e8166336ed6f32d0d8bfb8b3510d2d47c974c38a8cf188c73f101e4

SHA512
ffe9c5d1055062fb83bd36bcc44505ed539bf1288809b278e5de16b9a9be5ce3c4cad86ad373e0d3c37b642849c61e9155d324fc7e0ce1b9af47b549850bf3d0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lc5aommp.ve1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
4KB

MD5
17eece3240d08aa4811cf1007cfe2585

SHA1
6c10329f61455d1c96e041b6f89ee6260af3bd0f

SHA256
7cc0db44c7b23e4894fe11f0d8d84b2a82ad667eb1e3504192f3ba729f9a7903

SHA512
a7de8d6322410ec89f76c70a7159645e8913774f38b84aafeeeb9f90dc3b9aa74a0a280d0bb6674790c04a8ff2d059327f02ebfda6c4486778d53b7fc6da6370

Download Submit
memory/2664-97-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2664-93-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2664-92-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3400-88-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3400-89-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3400-86-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4256-107-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-130-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-123-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-122-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-115-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-114-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-105-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4256-106-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4256-102-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4256-131-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-138-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-100-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-99-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-139-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-146-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-147-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-155-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-154-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-162-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4256-163-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4380-23-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/4380-39-0x00000000060A0000-0x00000000060BE000-memory.dmp

Filesize
120KB

Download
memory/4380-67-0x0000000007780000-0x000000000779A000-memory.dmp

Filesize
104KB

Download
memory/4380-68-0x0000000007760000-0x0000000007768000-memory.dmp

Filesize
32KB

Download
memory/4380-72-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/4380-65-0x0000000007670000-0x000000000767E000-memory.dmp

Filesize
56KB

Download
memory/4380-64-0x0000000007640000-0x0000000007651000-memory.dmp

Filesize
68KB

Download
memory/4380-63-0x00000000076C0000-0x0000000007756000-memory.dmp

Filesize
600KB

Download
memory/4380-62-0x00000000074B0000-0x00000000074BA000-memory.dmp

Filesize
40KB

Download
memory/4380-21-0x0000000002780000-0x00000000027B6000-memory.dmp

Filesize
216KB

Download
memory/4380-61-0x0000000007440000-0x000000000745A000-memory.dmp

Filesize
104KB

Download
memory/4380-60-0x0000000007A90000-0x000000000810A000-memory.dmp

Filesize
6.5MB

Download
memory/4380-59-0x0000000007120000-0x00000000071C3000-memory.dmp

Filesize
652KB

Download
memory/4380-48-0x0000000071240000-0x000000007128C000-memory.dmp

Filesize
304KB

Download
memory/4380-24-0x00000000052C0000-0x00000000058E8000-memory.dmp

Filesize
6.2MB

Download
memory/4380-20-0x0000000074A5E000-0x0000000074A5F000-memory.dmp

Filesize
4KB

Download
memory/4380-58-0x0000000006690000-0x00000000066AE000-memory.dmp

Filesize
120KB

Download
memory/4380-47-0x0000000006650000-0x0000000006682000-memory.dmp

Filesize
200KB

Download
memory/4380-40-0x0000000006130000-0x000000000617C000-memory.dmp

Filesize
304KB

Download
memory/4380-66-0x0000000007680000-0x0000000007694000-memory.dmp

Filesize
80KB

Download
memory/4380-38-0x0000000005A80000-0x0000000005DD4000-memory.dmp

Filesize
3.3MB

Download
memory/4380-27-0x00000000058F0000-0x0000000005956000-memory.dmp

Filesize
408KB

Download
memory/4380-28-0x0000000005A10000-0x0000000005A76000-memory.dmp

Filesize
408KB

Download
memory/4380-26-0x00000000050D0000-0x00000000050F2000-memory.dmp

Filesize
136KB

Download
memory/5032-9-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/5032-5-0x0000000004C50000-0x0000000004C5A000-memory.dmp

Filesize
40KB

Download
memory/5032-0-0x0000000074A5E000-0x0000000074A5F000-memory.dmp

Filesize
4KB

Download
memory/5032-22-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/5032-1-0x00000000001B0000-0x0000000000294000-memory.dmp

Filesize
912KB

Download
memory/5032-10-0x0000000006030000-0x00000000060F4000-memory.dmp

Filesize
784KB

Download
memory/5032-2-0x0000000005280000-0x0000000005824000-memory.dmp

Filesize
5.6MB

Download
memory/5032-7-0x0000000074A5E000-0x0000000074A5F000-memory.dmp

Filesize
4KB

Download
memory/5032-3-0x0000000004CD0000-0x0000000004D62000-memory.dmp

Filesize
584KB

Download
memory/5032-6-0x0000000005010000-0x00000000050AC000-memory.dmp

Filesize
624KB

Download
memory/5032-8-0x0000000004E70000-0x0000000004E82000-memory.dmp

Filesize
72KB

Download
memory/5032-4-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/5116-90-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5116-91-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5116-87-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download