remcos | 4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87

Analysis

max time kernel
149s
max time network
148s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
05-12-2024 18:04

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
Size

856KB
MD5

b7b504ea022610fe69940fd54fd2bc27
SHA1

8cb39de97c36eb8328436ffe21be24742925e652
SHA256

4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87
SHA512

4f38f6ff589cb607c2cbd5be4be78c5dffe9f03723ec9c9eee9c606b9a8143ade83dbd3c2639f2401ee47232b899fb9dbe9dde7fea5196c31483d2b552f4b313
SSDEEP

24576:KdeRzboLmkwWQ6Q2l/4SPTIXkORnLeV35YryHC:CyO37l5TkzRLePYryHC

Score

10^/10

remcos remotehost collection discovery execution rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

192.210.150.26:8787

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-R1T905
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.

resource	yara_rule
behavioral1/memory/1336-51-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2576-49-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2560-46-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2576-49-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2560-46-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2960 set thread context of 2668	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	32
PID 2668 set thread context of 2560	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	33
PID 2668 set thread context of 2576	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	34
PID 2668 set thread context of 1336	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	35

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2464	Powershell.exe

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	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2464	Powershell.exe
2560	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
2560	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2464	Powershell.exe
Token: SeDebugPrivilege	1336	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 2464	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	30
PID 2960 wrote to memory of 2464	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	30
PID 2960 wrote to memory of 2464	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	30
PID 2960 wrote to memory of 2464	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	30
PID 2960 wrote to memory of 2668	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	32
PID 2960 wrote to memory of 2668	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	32
PID 2960 wrote to memory of 2668	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	32
PID 2960 wrote to memory of 2668	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	32
PID 2960 wrote to memory of 2668	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	32
PID 2960 wrote to memory of 2668	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	32
PID 2960 wrote to memory of 2668	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	32
PID 2960 wrote to memory of 2668	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	32
PID 2960 wrote to memory of 2668	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	32
PID 2960 wrote to memory of 2668	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	32
PID 2960 wrote to memory of 2668	2960	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	32
PID 2668 wrote to memory of 2560	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	33
PID 2668 wrote to memory of 2560	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	33
PID 2668 wrote to memory of 2560	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	33
PID 2668 wrote to memory of 2560	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	33
PID 2668 wrote to memory of 2560	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	33
PID 2668 wrote to memory of 2576	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	34
PID 2668 wrote to memory of 2576	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	34
PID 2668 wrote to memory of 2576	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	34
PID 2668 wrote to memory of 2576	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	34
PID 2668 wrote to memory of 2576	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	34
PID 2668 wrote to memory of 1336	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	35
PID 2668 wrote to memory of 1336	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	35
PID 2668 wrote to memory of 1336	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	35
PID 2668 wrote to memory of 1336	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	35
PID 2668 wrote to memory of 1336	2668	4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe	35

C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
"C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
  "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'
  2⤵
  - Drops startup file
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2464
- C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
  "C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2668
- - C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
    C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\volkvjiprjzeqdib"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2560
- - C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
    C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\yiqvwutifrrjajefvne"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2576
- - C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe
    C:\Users\Admin\AppData\Local\Temp\4c5bea1fa5f8547de2a03c6117e10a023d76edc17df923c5f8031bfa74e12e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\icwnwmdktzjwcxsjmyrbqib"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:1336

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 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
124B

MD5
a8accbd6f9007f1b1eff6eeccd46406f

SHA1
5745006b6f3adeba7e2a833c5eae2661f03438b6

SHA256
7fd134aff2770ab0471788ea6c1bf190a7940663e4572a115c9486b21053b20e

SHA512
5cfac162dff761611a3647a4528d7837c90c991520c5e1a7dbbaf99a8bcd94a421bef6006dba93e05989ac6e28efa43ab46cd5f01b90e3c1262b16f0db8a51fd

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/1336-48-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1336-51-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1336-50-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2464-8-0x000000006F2E0000-0x000000006F88B000-memory.dmp

Filesize
5.7MB

Download
memory/2464-9-0x000000006F2E0000-0x000000006F88B000-memory.dmp

Filesize
5.7MB

Download
memory/2464-10-0x000000006F2E0000-0x000000006F88B000-memory.dmp

Filesize
5.7MB

Download
memory/2464-12-0x000000006F2E0000-0x000000006F88B000-memory.dmp

Filesize
5.7MB

Download
memory/2464-7-0x000000006F2E0000-0x000000006F88B000-memory.dmp

Filesize
5.7MB

Download
memory/2464-6-0x000000006F2E1000-0x000000006F2E2000-memory.dmp

Filesize
4KB

Download
memory/2560-41-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2560-44-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2560-46-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2576-45-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2576-49-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2576-43-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2668-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2668-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-104-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-94-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-95-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-87-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-63-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2668-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-64-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2668-60-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2668-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-86-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2668-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2960-0-0x00000000744FE000-0x00000000744FF000-memory.dmp

Filesize
4KB

Download
memory/2960-1-0x0000000000820000-0x00000000008FC000-memory.dmp

Filesize
880KB

Download
memory/2960-57-0x00000000744FE000-0x00000000744FF000-memory.dmp

Filesize
4KB

Download
memory/2960-58-0x00000000744F0000-0x0000000074BDE000-memory.dmp

Filesize
6.9MB

Download
memory/2960-3-0x00000000744F0000-0x0000000074BDE000-memory.dmp

Filesize
6.9MB

Download
memory/2960-2-0x0000000004C20000-0x0000000004CCE000-memory.dmp

Filesize
696KB

Download
memory/2960-13-0x00000000004D0000-0x00000000004D8000-memory.dmp

Filesize
32KB

Download