remcos | 6afa6e45dd17f3db5a8d4e3856f735844a6607ed805fef058e207b1bdc5c19f7

General

Target

Request for Quotation.exe
Size

942KB
MD5

81f320c7d5f344ae0ddd2b05c69efb78
SHA1

dcfae138ee23d9cea53a052cfe3c42e87c1873e5
SHA256

de99d33baf08708519ab2d9dc15635280482b2b21e52653b8786a6eb34c2f262
SHA512

cb94f64fd7979917ba1d32a3966e22e9afce0766f58cf15e23a7f1a00d6b2f7cfd1e9b07edcd4c76e7471d89690d142e1ddaa23ea09d95b0f9eb17517d9189e7
SSDEEP

24576:BYeOKhefMa86dA+CPcwh/6s7TNNuS6UEtvqsX+ES:2trdsEE/6mNNuS6UEtvHO

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

eadzagba1.duckdns.org:4877

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-X3UMUO
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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2868	powershell.exe
2768	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1744 set thread context of 2780	1744	Request for Quotation.exe	36

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 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Request for Quotation.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Request for Quotation.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
2136	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2868	powershell.exe
2768	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2868	powershell.exe
Token: SeDebugPrivilege	2768	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 2868	1744	Request for Quotation.exe	30
PID 1744 wrote to memory of 2868	1744	Request for Quotation.exe	30
PID 1744 wrote to memory of 2868	1744	Request for Quotation.exe	30
PID 1744 wrote to memory of 2868	1744	Request for Quotation.exe	30
PID 1744 wrote to memory of 2768	1744	Request for Quotation.exe	32
PID 1744 wrote to memory of 2768	1744	Request for Quotation.exe	32
PID 1744 wrote to memory of 2768	1744	Request for Quotation.exe	32
PID 1744 wrote to memory of 2768	1744	Request for Quotation.exe	32
PID 1744 wrote to memory of 2136	1744	Request for Quotation.exe	34
PID 1744 wrote to memory of 2136	1744	Request for Quotation.exe	34
PID 1744 wrote to memory of 2136	1744	Request for Quotation.exe	34
PID 1744 wrote to memory of 2136	1744	Request for Quotation.exe	34
PID 1744 wrote to memory of 2780	1744	Request for Quotation.exe	36
PID 1744 wrote to memory of 2780	1744	Request for Quotation.exe	36
PID 1744 wrote to memory of 2780	1744	Request for Quotation.exe	36
PID 1744 wrote to memory of 2780	1744	Request for Quotation.exe	36
PID 1744 wrote to memory of 2780	1744	Request for Quotation.exe	36
PID 1744 wrote to memory of 2780	1744	Request for Quotation.exe	36
PID 1744 wrote to memory of 2780	1744	Request for Quotation.exe	36
PID 1744 wrote to memory of 2780	1744	Request for Quotation.exe	36
PID 1744 wrote to memory of 2780	1744	Request for Quotation.exe	36
PID 1744 wrote to memory of 2780	1744	Request for Quotation.exe	36
PID 1744 wrote to memory of 2780	1744	Request for Quotation.exe	36
PID 1744 wrote to memory of 2780	1744	Request for Quotation.exe	36
PID 1744 wrote to memory of 2780	1744	Request for Quotation.exe	36

C:\Users\Admin\AppData\Local\Temp\Request for Quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Request for Quotation.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Request for Quotation.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2868
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ToHYZKAyCCa.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2768
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ToHYZKAyCCa" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB339.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2136
- C:\Users\Admin\AppData\Local\Temp\Request for Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Request for Quotation.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2780

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB339.tmp

Filesize
1KB

MD5
66df24304a56908ca7df16228e7e66e8

SHA1
872239db3cb40f6427e3809515ebb5240426302e

SHA256
66ac22fdada4b24319b8e0176cfbd54aaf6d65557c4e46ea64fc585964484543

SHA512
2ca4e7053c817de14b46ec4f53aee48a6f9503d8c697726a6953407b751923904583340b059ecd08e93b5086c6140d4e3d46a8a091d14ec6fb919d1ce2b1d73a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
fe36c3fe82f0e90e8d1bbab2a3224d9c

SHA1
da753849266002222c3bdef22797084cb9dc47ce

SHA256
f31fbcc1169edfeb052b3d1611f616dc8978cce376c44a801d4390b01c9a5b18

SHA512
ba3a9d612d8726ac01f4edd2e6fe684de288d1c519fb349e38583a4bae9c9ca29a98e84fb21f6665b8c6f50dd94c309e69b7bb869c02191e708766cddd322e29

Download Submit
memory/1744-39-0x0000000074270000-0x000000007495E000-memory.dmp

Filesize
6.9MB

Download
memory/1744-1-0x0000000000D80000-0x0000000000E72000-memory.dmp

Filesize
968KB

Download
memory/1744-3-0x0000000000460000-0x000000000047A000-memory.dmp

Filesize
104KB

Download
memory/1744-2-0x0000000074270000-0x000000007495E000-memory.dmp

Filesize
6.9MB

Download
memory/1744-4-0x0000000000240000-0x000000000024E000-memory.dmp

Filesize
56KB

Download
memory/1744-5-0x0000000000480000-0x0000000000496000-memory.dmp

Filesize
88KB

Download
memory/1744-6-0x0000000000AD0000-0x0000000000B90000-memory.dmp

Filesize
768KB

Download
memory/1744-0-0x000000007427E000-0x000000007427F000-memory.dmp

Filesize
4KB

Download
memory/2780-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2780-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2780-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads