remcos | 23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116

General

Target

23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
Size

483KB
MD5

fc9b04ea453d7b0446775ec69db14a3c
SHA1

bd644c9e847bffaff128df4711aabbfc505217ce
SHA256

23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116
SHA512

bf04f9dd9fca7532c5ea88dde596f28732e4d55d6248d92b767ceea6448a02a993535d23b7b562c26c5ff96c59045c93187e8569fce8e91510fce051c6e9df51
SSDEEP

6144:wTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZXAXkcrvZT4:wTlrYw1RUh3NFn+N5WfIQIjbs/ZXGT4

Score

10^/10

remcos remotehost collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

cokka.duckdns.org:9764

cokka.duckdns.org:9674

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-TTZ00A
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 8 IoCs

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

resource	yara_rule
behavioral2/memory/2392-10-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2308-12-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2832-22-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2308-21-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2308-19-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2832-18-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2392-11-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2392-26-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2308-12-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2308-21-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2308-19-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2392-10-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2392-11-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2392-26-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

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-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4716 set thread context of 2392	4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe	92
PID 4716 set thread context of 2308	4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe	93
PID 4716 set thread context of 2832	4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe	94

System Location Discovery: System Language Discovery 1 TTPs 4 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	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2392	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
2392	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
2832	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
2832	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
2392	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
2392	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2832	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4716 wrote to memory of 2392	4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe	92
PID 4716 wrote to memory of 2392	4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe	92
PID 4716 wrote to memory of 2392	4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe	92
PID 4716 wrote to memory of 2308	4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe	93
PID 4716 wrote to memory of 2308	4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe	93
PID 4716 wrote to memory of 2308	4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe	93
PID 4716 wrote to memory of 2832	4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe	94
PID 4716 wrote to memory of 2832	4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe	94
PID 4716 wrote to memory of 2832	4716	23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe	94

C:\Users\Admin\AppData\Local\Temp\23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
"C:\Users\Admin\AppData\Local\Temp\23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4716
- C:\Users\Admin\AppData\Local\Temp\23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
  C:\Users\Admin\AppData\Local\Temp\23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe /stext "C:\Users\Admin\AppData\Local\Temp\ttmwkdidnpdisusqrqbogbagmfcelmxlom"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2392
- C:\Users\Admin\AppData\Local\Temp\23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
  C:\Users\Admin\AppData\Local\Temp\23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe /stext "C:\Users\Admin\AppData\Local\Temp\dorolvt"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:2308
- C:\Users\Admin\AppData\Local\Temp\23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe
  C:\Users\Admin\AppData\Local\Temp\23403e326d555e75ea2eadba8c632caf7054ff0ca3203cb2a9e8ccab1be15116.exe /stext "C:\Users\Admin\AppData\Local\Temp\gixzmodyxg"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2832

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
b88f2f6b49a4b3ba37db7efc51763b2c

SHA1
d5d96820b9720027f68d974e22bed167543511fb

SHA256
a9abf05903472b23428e51014967a322a24f57687560b657139aeb120785941f

SHA512
d3262a21c425dbd8351be89e711abcd0979192a49e23ced8c590eaad578e088b74304bdef134921027c4a41f1babf57bc13b7b6f50d2f88f8aade9b3b149f527

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

Filesize
4KB

MD5
ac300aeaf27709e2067788fdd4624843

SHA1
e98edd4615d35de96e30f1a0e13c05b42ee7eb7b

SHA256
d2637d58bb120dc6fefe2f38d6e0d4b308006b8639106a7f9e915fa80b5cc9d9

SHA512
09c46e708f9d253dccd4d943639d9f8126f868ae3dcd951aad12222bb98b5d3814676f878c8391b9bdab5dedcf5b9e9eaeb2ad3ffec57bda875198735586d4df

Download Submit
memory/2308-8-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2308-5-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2308-21-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2308-19-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2308-12-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2392-10-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2392-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2392-11-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2392-2-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2392-7-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2832-14-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2832-18-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2832-9-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2832-22-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4716-29-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4716-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4716-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4716-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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