remcos | 7a59546ab79e0b1d73dca0d2dcfdeea4da848dbc33fb18f1c5c211759526362f

Analysis

max time kernel
148s
max time network
147s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
29/08/2024, 02:57

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General

Target

1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
Size

927KB
MD5

339dcd1a52b9095623e72c678f20ed01
SHA1

a2bd542dcddefc2ece12e47b380bc343ead31604
SHA256

1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60
SHA512

06b4ab19a5cd8957d879ed141e9d9ad5a0c4898d2bb460f4796d2d04014a67a10fe00bc6243a8936c8ec1b9be7d6cf4ce1a8a6c278067e6ea86ed5a2d40150a7
SSDEEP

24576:JBKlj3XZEwjwxSonfaM00VMNSfQ/woYhkToooZ:2ljHZncct7IoY9bZ

Score

10^/10

remcos bcv collection credential_access discovery execution rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

BCV

tvq3101.sytes.net:1974

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-9PFUGS
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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Detected Nirsoft tools 3 IoCs

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

resource	yara_rule
behavioral1/memory/1100-53-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1260-60-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1704-61-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1704-61-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/1100-53-0x0000000000400000-0x0000000000478000-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

pid	Process
2796	powershell.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

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2348 set thread context of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2196 set thread context of 1100	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	36
PID 2196 set thread context of 1704	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	37
PID 2196 set thread context of 1260	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	38

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2796	powershell.exe
1100	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
1100	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2796	powershell.exe
Token: SeDebugPrivilege	1260	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2796	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	31
PID 2348 wrote to memory of 2796	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	31
PID 2348 wrote to memory of 2796	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	31
PID 2348 wrote to memory of 2796	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	31
PID 2348 wrote to memory of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2348 wrote to memory of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2348 wrote to memory of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2348 wrote to memory of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2348 wrote to memory of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2348 wrote to memory of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2348 wrote to memory of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2348 wrote to memory of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2348 wrote to memory of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2348 wrote to memory of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2348 wrote to memory of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2348 wrote to memory of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2348 wrote to memory of 2196	2348	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	33
PID 2196 wrote to memory of 1100	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	36
PID 2196 wrote to memory of 1100	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	36
PID 2196 wrote to memory of 1100	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	36
PID 2196 wrote to memory of 1100	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	36
PID 2196 wrote to memory of 1100	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	36
PID 2196 wrote to memory of 1704	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	37
PID 2196 wrote to memory of 1704	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	37
PID 2196 wrote to memory of 1704	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	37
PID 2196 wrote to memory of 1704	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	37
PID 2196 wrote to memory of 1704	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	37
PID 2196 wrote to memory of 1260	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	38
PID 2196 wrote to memory of 1260	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	38
PID 2196 wrote to memory of 1260	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	38
PID 2196 wrote to memory of 1260	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	38
PID 2196 wrote to memory of 1260	2196	1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe	38

C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
"C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2348
- 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\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2796
- C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
  "C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2196
- - C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
    C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe /stext "C:\Users\Admin\AppData\Local\Temp\qijpmqxccfbkdnmndhxuatoodhiewxhrmt"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1100
- - C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
    C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe /stext "C:\Users\Admin\AppData\Local\Temp\akwifji"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:1704
- - C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe
    C:\Users\Admin\AppData\Local\Temp\1414f1e42aa7b329d33ddbf9c64024eb822b1f61780bede84aa260724bd36b60.exe /stext "C:\Users\Admin\AppData\Local\Temp\cfcsgbsxew"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:1260

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\remcos\logs.dat

Filesize
318B

MD5
4d84e0de0bafac84d4f63752b4f0c7c1

SHA1
753040b7b1ac773ae9eda7aa5034082824719541

SHA256
545e11f1363f89feeb2e51506250845819a234cf74d0784d39257a507f238ea1

SHA512
9b2a5ae82743cf59fb0c88b57542e8e752ec83cef7a73a0a736c9321af655fc3213e0ef58cdbf66d9b577a88674eea79aa0931ba5203dbdc5af0e20452688cca

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/1100-51-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1100-53-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1100-52-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1260-59-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1260-60-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1260-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1704-61-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1704-55-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1704-56-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2196-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-103-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-9-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-7-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2196-95-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-87-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-68-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2196-71-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2196-72-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2196-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2196-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2348-1-0x0000000000980000-0x0000000000A6A000-memory.dmp

Filesize
936KB

Download
memory/2348-2-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2348-3-0x00000000005A0000-0x00000000005B8000-memory.dmp

Filesize
96KB

Download
memory/2348-4-0x000000007416E000-0x000000007416F000-memory.dmp

Filesize
4KB

Download
memory/2348-5-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2348-6-0x00000000050F0000-0x00000000051B0000-memory.dmp

Filesize
768KB

Download
memory/2348-29-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2348-0-0x000000007416E000-0x000000007416F000-memory.dmp

Filesize
4KB

Download