remcos | bb982ea4dad990c5c393a7f1fb85a4daf85be97edcb1e1473cdd0703596ecd6d

General

Target

Payment Voucher.exe
Size

912KB
MD5

365de72e3ea8c233861d9a80f7d7c1be
SHA1

ba20d0609fe16e3f9e61a34928853c00184be26b
SHA256

bb982ea4dad990c5c393a7f1fb85a4daf85be97edcb1e1473cdd0703596ecd6d
SHA512

9c856fee64c4179865b9ae968b706fddd5151c3c405fa5b18d699801133dfde28250fdbcd16e31a8cbdcfb98ec8fe2efa6f769a921f54e505e5c5e1bc6822ed4
SSDEEP

24576:u570jYrtQ+mJLt+pQZEPjhrnJtMVR8K85fGYan:u570jYrPwLt+pQSBnT8N85fGX

Score

10^/10

remcos 3456789 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

3456789

C2

172.93.220.148:45682

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
765-8M14I5
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

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
1232	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2452 set thread context of 2704	2452	Payment Voucher.exe	34

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 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Payment Voucher.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Payment Voucher.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1956	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1232	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1232	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2452 wrote to memory of 1232	2452	Payment Voucher.exe	30
PID 2452 wrote to memory of 1232	2452	Payment Voucher.exe	30
PID 2452 wrote to memory of 1232	2452	Payment Voucher.exe	30
PID 2452 wrote to memory of 1232	2452	Payment Voucher.exe	30
PID 2452 wrote to memory of 1956	2452	Payment Voucher.exe	32
PID 2452 wrote to memory of 1956	2452	Payment Voucher.exe	32
PID 2452 wrote to memory of 1956	2452	Payment Voucher.exe	32
PID 2452 wrote to memory of 1956	2452	Payment Voucher.exe	32
PID 2452 wrote to memory of 2704	2452	Payment Voucher.exe	34
PID 2452 wrote to memory of 2704	2452	Payment Voucher.exe	34
PID 2452 wrote to memory of 2704	2452	Payment Voucher.exe	34
PID 2452 wrote to memory of 2704	2452	Payment Voucher.exe	34
PID 2452 wrote to memory of 2704	2452	Payment Voucher.exe	34
PID 2452 wrote to memory of 2704	2452	Payment Voucher.exe	34
PID 2452 wrote to memory of 2704	2452	Payment Voucher.exe	34
PID 2452 wrote to memory of 2704	2452	Payment Voucher.exe	34
PID 2452 wrote to memory of 2704	2452	Payment Voucher.exe	34
PID 2452 wrote to memory of 2704	2452	Payment Voucher.exe	34
PID 2452 wrote to memory of 2704	2452	Payment Voucher.exe	34
PID 2452 wrote to memory of 2704	2452	Payment Voucher.exe	34
PID 2452 wrote to memory of 2704	2452	Payment Voucher.exe	34

C:\Users\Admin\AppData\Local\Temp\Payment Voucher.exe
"C:\Users\Admin\AppData\Local\Temp\Payment Voucher.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2452
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\GwTIUBUaZCliF.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1232
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GwTIUBUaZCliF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC707.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1956
- C:\Users\Admin\AppData\Local\Temp\Payment Voucher.exe
  "C:\Users\Admin\AppData\Local\Temp\Payment Voucher.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC707.tmp

Filesize
1KB

MD5
cd71709b922aaa41e458fc6f9e8ec583

SHA1
3b69655577c53134e1d2c13fe89c493bf8eb165b

SHA256
c4a69b757ecd4ed21808848c08d8d19f883f1a0b6dc50f2be7ae196a356939fa

SHA512
a8899ba3a21b43a2d9c20d0195c6a2f5717b23f46d22b60329e2c9345710027ab9769436826f59fe8da140e2f2f5e05630977707959e2cff1926aed1ab3d3df7

Download Submit
memory/2452-0-0x000000007434E000-0x000000007434F000-memory.dmp

Filesize
4KB

Download
memory/2452-1-0x0000000000CE0000-0x0000000000DC8000-memory.dmp

Filesize
928KB

Download
memory/2452-2-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/2452-3-0x0000000000490000-0x00000000004A0000-memory.dmp

Filesize
64KB

Download
memory/2452-4-0x000000007434E000-0x000000007434F000-memory.dmp

Filesize
4KB

Download
memory/2452-5-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/2452-6-0x0000000005830000-0x00000000058EE000-memory.dmp

Filesize
760KB

Download
memory/2452-33-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/2704-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2704-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2704-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads