remcos | 8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118

Analysis

max time kernel
149s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-01-2025 14:10

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General

Target

8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
Size

982KB
MD5

d46127b513eaa0e4e1e4d2ab89fe2b4a
SHA1

3478c45ea7e943ac5656186a13a5829256117232
SHA256

8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118
SHA512

2086d69e11d20dd489abed169722fe0b6b2e864d45e2356e703f8d593c0f992beada47a646043af361db59dc514623bbe87746a97e79a4130aa55dc7f9d47278
SSDEEP

24576:QMj4sXd+Zh5lLfwDpuRR7BYutqtoQsFC/Z+Y0yPPov:ssXd+hBYsxqoe0NE

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/2604-52-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2896-50-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2848-49-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2896-50-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2848-49-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe
File opened for modification	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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2292 set thread context of 1032	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	32
PID 1032 set thread context of 2848	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	34
PID 1032 set thread context of 2896	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	35
PID 1032 set thread context of 2604	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	36

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1908	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	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1908	Powershell.exe
2848	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
2848	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1908	Powershell.exe
Token: SeDebugPrivilege	2604	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 1908	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	30
PID 2292 wrote to memory of 1908	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	30
PID 2292 wrote to memory of 1908	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	30
PID 2292 wrote to memory of 1908	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	30
PID 2292 wrote to memory of 1032	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	32
PID 2292 wrote to memory of 1032	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	32
PID 2292 wrote to memory of 1032	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	32
PID 2292 wrote to memory of 1032	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	32
PID 2292 wrote to memory of 1032	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	32
PID 2292 wrote to memory of 1032	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	32
PID 2292 wrote to memory of 1032	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	32
PID 2292 wrote to memory of 1032	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	32
PID 2292 wrote to memory of 1032	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	32
PID 2292 wrote to memory of 1032	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	32
PID 2292 wrote to memory of 1032	2292	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	32
PID 1032 wrote to memory of 2848	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	34
PID 1032 wrote to memory of 2848	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	34
PID 1032 wrote to memory of 2848	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	34
PID 1032 wrote to memory of 2848	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	34
PID 1032 wrote to memory of 2848	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	34
PID 1032 wrote to memory of 2896	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	35
PID 1032 wrote to memory of 2896	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	35
PID 1032 wrote to memory of 2896	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	35
PID 1032 wrote to memory of 2896	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	35
PID 1032 wrote to memory of 2896	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	35
PID 1032 wrote to memory of 2604	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	36
PID 1032 wrote to memory of 2604	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	36
PID 1032 wrote to memory of 2604	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	36
PID 1032 wrote to memory of 2604	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	36
PID 1032 wrote to memory of 2604	1032	8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe	36

C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
"C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.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
  "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.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:1908
- C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
  "C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1032
- - C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
    C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe /stext "C:\Users\Admin\AppData\Local\Temp\puzdigelunzwukdumktteso"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2848
- - C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
    C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe /stext "C:\Users\Admin\AppData\Local\Temp\zwevjqpfivrjwqrydvguhxjzkb"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2896
- - C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe
    C:\Users\Admin\AppData\Local\Temp\8c5312bbccde4babcfbcb4d079b6063cf023777affca10a479891833925d4118.exe /stext "C:\Users\Admin\AppData\Local\Temp\bqrojjzgwdjohefcngaosjdqliymzy"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2604

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

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
9753595dff4480cbab46e2ed30370d8b

SHA1
db8e02d3aec77e47ac067a4236ca9bbc1f47fab8

SHA256
8b71417c7c86a31651efca2aecf1fa3cbaa9e18bb380478c2d10e8d456fd1198

SHA512
5b84f8c7e423cda7f12ab72049efb62f9615fb40737f506a311b338907686fb65ae9e002cfd8cd4e6f2d5f16bf72844d70fee9fd8a4a6a0727e331d15af2ad8e

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/1032-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-89-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-88-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-61-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1032-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1032-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1032-65-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1032-64-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1032-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1908-8-0x000000006F450000-0x000000006F9FB000-memory.dmp

Filesize
5.7MB

Download
memory/1908-7-0x000000006F450000-0x000000006F9FB000-memory.dmp

Filesize
5.7MB

Download
memory/1908-10-0x000000006F450000-0x000000006F9FB000-memory.dmp

Filesize
5.7MB

Download
memory/1908-9-0x000000006F450000-0x000000006F9FB000-memory.dmp

Filesize
5.7MB

Download
memory/1908-36-0x000000006F450000-0x000000006F9FB000-memory.dmp

Filesize
5.7MB

Download
memory/1908-6-0x000000006F451000-0x000000006F452000-memory.dmp

Filesize
4KB

Download
memory/2292-59-0x000000007453E000-0x000000007453F000-memory.dmp

Filesize
4KB

Download
memory/2292-1-0x0000000000FB0000-0x00000000010AC000-memory.dmp

Filesize
1008KB

Download
memory/2292-2-0x0000000000C70000-0x0000000000D1E000-memory.dmp

Filesize
696KB

Download
memory/2292-11-0x0000000000480000-0x0000000000488000-memory.dmp

Filesize
32KB

Download
memory/2292-60-0x0000000074530000-0x0000000074C1E000-memory.dmp

Filesize
6.9MB

Download
memory/2292-0-0x000000007453E000-0x000000007453F000-memory.dmp

Filesize
4KB

Download
memory/2292-3-0x0000000074530000-0x0000000074C1E000-memory.dmp

Filesize
6.9MB

Download
memory/2604-47-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2604-51-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2604-52-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2848-49-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2848-45-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2848-42-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2848-41-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2896-48-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2896-44-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2896-50-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download