remcos | b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f

Analysis

max time kernel
149s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30-09-2024 00:41

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General

Target

6138a05e066e20c8e39c760bec68e113.exe
Size

964KB
MD5

6138a05e066e20c8e39c760bec68e113
SHA1

04644b6a5ea07a58824ff156b240ca9481806469
SHA256

b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f
SHA512

811381b33c3be3ee817a127c42e3c886802331d7453230658244872c97cddc36aa4c0b7d05e30c9280bfe1f800fedb481575cd0ab502386953af4505a5dd7aaf
SSDEEP

24576:LI++Z/jfG+Nv4GhFASI4tKX2Fjpm87bb:LI++ZLfG+SGhF/tImT

Score

10^/10

remcos remotehost collection discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

103.186.116.220:6565

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-9XV80Z
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

Detected Nirsoft tools 8 IoCs

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

resource	yara_rule
behavioral2/memory/4848-41-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4848-39-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4084-38-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4084-35-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4848-34-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1220-45-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1220-46-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4084-48-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1220-45-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1220-46-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4084-38-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4084-35-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4084-48-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	MSBuild.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3304 set thread context of 3628	3304	6138a05e066e20c8e39c760bec68e113.exe	87
PID 3628 set thread context of 4084	3628	MSBuild.exe	90
PID 3628 set thread context of 1220	3628	MSBuild.exe	91
PID 3628 set thread context of 4848	3628	MSBuild.exe	92

System Location Discovery: System Language Discovery 1 TTPs 5 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	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6138a05e066e20c8e39c760bec68e113.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4084	MSBuild.exe
4084	MSBuild.exe
4848	MSBuild.exe
4848	MSBuild.exe
4084	MSBuild.exe
4084	MSBuild.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
3628	MSBuild.exe
3628	MSBuild.exe
3628	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4848	MSBuild.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 3304 wrote to memory of 3628	3304	6138a05e066e20c8e39c760bec68e113.exe	87
PID 3304 wrote to memory of 3628	3304	6138a05e066e20c8e39c760bec68e113.exe	87
PID 3304 wrote to memory of 3628	3304	6138a05e066e20c8e39c760bec68e113.exe	87
PID 3304 wrote to memory of 3628	3304	6138a05e066e20c8e39c760bec68e113.exe	87
PID 3304 wrote to memory of 3628	3304	6138a05e066e20c8e39c760bec68e113.exe	87
PID 3304 wrote to memory of 3628	3304	6138a05e066e20c8e39c760bec68e113.exe	87
PID 3304 wrote to memory of 3628	3304	6138a05e066e20c8e39c760bec68e113.exe	87
PID 3304 wrote to memory of 3628	3304	6138a05e066e20c8e39c760bec68e113.exe	87
PID 3304 wrote to memory of 3628	3304	6138a05e066e20c8e39c760bec68e113.exe	87
PID 3304 wrote to memory of 3628	3304	6138a05e066e20c8e39c760bec68e113.exe	87
PID 3304 wrote to memory of 3628	3304	6138a05e066e20c8e39c760bec68e113.exe	87
PID 3304 wrote to memory of 3628	3304	6138a05e066e20c8e39c760bec68e113.exe	87
PID 3628 wrote to memory of 4084	3628	MSBuild.exe	90
PID 3628 wrote to memory of 4084	3628	MSBuild.exe	90
PID 3628 wrote to memory of 4084	3628	MSBuild.exe	90
PID 3628 wrote to memory of 4084	3628	MSBuild.exe	90
PID 3628 wrote to memory of 1220	3628	MSBuild.exe	91
PID 3628 wrote to memory of 1220	3628	MSBuild.exe	91
PID 3628 wrote to memory of 1220	3628	MSBuild.exe	91
PID 3628 wrote to memory of 1220	3628	MSBuild.exe	91
PID 3628 wrote to memory of 4848	3628	MSBuild.exe	92
PID 3628 wrote to memory of 4848	3628	MSBuild.exe	92
PID 3628 wrote to memory of 4848	3628	MSBuild.exe	92
PID 3628 wrote to memory of 4848	3628	MSBuild.exe	92

C:\Users\Admin\AppData\Local\Temp\6138a05e066e20c8e39c760bec68e113.exe
"C:\Users\Admin\AppData\Local\Temp\6138a05e066e20c8e39c760bec68e113.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3304
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3628
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /stext "C:\Users\Admin\AppData\Local\Temp\ckbvpidboixhrloxqkncn"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:4084
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /stext "C:\Users\Admin\AppData\Local\Temp\nehfqaodbqpuurcbavawqnfc"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:1220
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /stext "C:\Users\Admin\AppData\Local\Temp\xhmyrszxpyhyexznrfnxbsatvtu"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4848

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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:\Users\Admin\AppData\Local\Temp\ckbvpidboixhrloxqkncn

Filesize
4KB

MD5
faaa2b16df1bfc1a3792faaa35786349

SHA1
359534a59d7c5139ae205c24533ba60afdfb9f3f

SHA256
3586befc3b8b4da223e2ee0dcb00965ba5c0a205c14f2acefdeec7e46efddd5a

SHA512
2fbc79cace52a58e69ab983d034bb41ebb2496f767e18e5e4b31eefc4447c935d8614f744c71302e459350a05562fadc4c2355d76638b595e7cff1bb3d1618db

Download Submit
memory/1220-40-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1220-37-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1220-45-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1220-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1220-46-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3304-4-0x0000000074C40000-0x00000000753F0000-memory.dmp

Filesize
7.7MB

Download
memory/3304-7-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

Filesize
4KB

Download
memory/3304-8-0x0000000074C40000-0x00000000753F0000-memory.dmp

Filesize
7.7MB

Download
memory/3304-9-0x0000000006F70000-0x0000000007030000-memory.dmp

Filesize
768KB

Download
memory/3304-10-0x0000000009640000-0x00000000096DC000-memory.dmp

Filesize
624KB

Download
memory/3304-6-0x0000000005700000-0x0000000005710000-memory.dmp

Filesize
64KB

Download
memory/3304-5-0x0000000005430000-0x000000000543A000-memory.dmp

Filesize
40KB

Download
memory/3304-0-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

Filesize
4KB

Download
memory/3304-3-0x00000000054A0000-0x0000000005532000-memory.dmp

Filesize
584KB

Download
memory/3304-2-0x0000000005A50000-0x0000000005FF4000-memory.dmp

Filesize
5.6MB

Download
memory/3304-17-0x0000000074C40000-0x00000000753F0000-memory.dmp

Filesize
7.7MB

Download
memory/3304-1-0x0000000000960000-0x0000000000A56000-memory.dmp

Filesize
984KB

Download
memory/3628-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-50-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3628-54-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3628-53-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4084-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4084-48-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4084-35-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4084-38-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4084-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4848-33-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4848-34-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4848-39-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4848-41-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4848-31-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download