remcos | 8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8

General

Target

B1DA0BD777067CA89B28FC4ADC81A483.exe
Size

1.0MB
MD5

b1da0bd777067ca89b28fc4adc81a483
SHA1

47af480b6704e2c61ae2e24060fbe86d3971c176
SHA256

8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8
SHA512

68ef2a70ba4f74f69d7bf47d76c92dbcf70261bc64b1569561662afaa90ca5d4119c97e7589cb0d857ad986d2ef3ff334ed02d230a529f79a5c9c8d9e761689f
SSDEEP

24576:Mg/fQ/hv309BvUDV2xogQA3O0jO0biPeX+Y5PTwCPiqLa:zAF303vUDESA+0jO0BOY58C5La

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

www.caampass.com:5577

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-RPV3M2
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

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

Processes:

powershell.exepowershell.exe

pid	Process
2876	powershell.exe
2712	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

B1DA0BD777067CA89B28FC4ADC81A483.exe

description	pid	Process	procid_target
PID 1704 set thread context of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37

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

Processes:

powershell.exeschtasks.exeB1DA0BD777067CA89B28FC4ADC81A483.exeB1DA0BD777067CA89B28FC4ADC81A483.exepowershell.exe

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	B1DA0BD777067CA89B28FC4ADC81A483.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	B1DA0BD777067CA89B28FC4ADC81A483.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

Processes:

schtasks.exe

pid	Process
2612	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

B1DA0BD777067CA89B28FC4ADC81A483.exepowershell.exepowershell.exe

pid	Process
1704	B1DA0BD777067CA89B28FC4ADC81A483.exe
1704	B1DA0BD777067CA89B28FC4ADC81A483.exe
1704	B1DA0BD777067CA89B28FC4ADC81A483.exe
2712	powershell.exe
2876	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

B1DA0BD777067CA89B28FC4ADC81A483.exepowershell.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	2876	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

B1DA0BD777067CA89B28FC4ADC81A483.exe

pid	Process
2172	B1DA0BD777067CA89B28FC4ADC81A483.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

B1DA0BD777067CA89B28FC4ADC81A483.exe

description	pid	Process	procid_target
PID 1704 wrote to memory of 2876	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	31
PID 1704 wrote to memory of 2876	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	31
PID 1704 wrote to memory of 2876	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	31
PID 1704 wrote to memory of 2876	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	31
PID 1704 wrote to memory of 2712	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	33
PID 1704 wrote to memory of 2712	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	33
PID 1704 wrote to memory of 2712	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	33
PID 1704 wrote to memory of 2712	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	33
PID 1704 wrote to memory of 2612	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	34
PID 1704 wrote to memory of 2612	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	34
PID 1704 wrote to memory of 2612	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	34
PID 1704 wrote to memory of 2612	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	34
PID 1704 wrote to memory of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37
PID 1704 wrote to memory of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37
PID 1704 wrote to memory of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37
PID 1704 wrote to memory of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37
PID 1704 wrote to memory of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37
PID 1704 wrote to memory of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37
PID 1704 wrote to memory of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37
PID 1704 wrote to memory of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37
PID 1704 wrote to memory of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37
PID 1704 wrote to memory of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37
PID 1704 wrote to memory of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37
PID 1704 wrote to memory of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37
PID 1704 wrote to memory of 2172	1704	B1DA0BD777067CA89B28FC4ADC81A483.exe	37

C:\Users\Admin\AppData\Local\Temp\B1DA0BD777067CA89B28FC4ADC81A483.exe
"C:\Users\Admin\AppData\Local\Temp\B1DA0BD777067CA89B28FC4ADC81A483.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1704
- 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\B1DA0BD777067CA89B28FC4ADC81A483.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2876
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\eJhvEJDc.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2712
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eJhvEJDc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDBBF.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2612
- C:\Users\Admin\AppData\Local\Temp\B1DA0BD777067CA89B28FC4ADC81A483.exe
  "C:\Users\Admin\AppData\Local\Temp\B1DA0BD777067CA89B28FC4ADC81A483.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2172

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
bbb793600f54529b998f8f9a778f280b

SHA1
7e7a3c22b974253a990b43b496809df953cb36ca

SHA256
f21a785885644c5ed22923d60654b1f47cad9d6ac00aecc349cce0795d50b819

SHA512
3d474d366bba1013a2cc17b551a2f97fd42031e573738509530e8d6e9dcb86ee44ea2ddd3d59294e54f362ae92748a7108451bf0c5befb697c8e41faf71ffc70

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDBBF.tmp

Filesize
1KB

MD5
e43ff5523d37fb5c055a912f7ec8bed5

SHA1
187267b8c848a467c2b8cb5f9c86831f6ae63a4d

SHA256
6f6c96b6ece12319cd22e4f3013cde3bc79f4f33974fc246458114fccd662544

SHA512
5f8513e8e3a5b7abf115a0d78c559b56b0b69af0045b95969593c7a9499f2f1b358f3839319a4bc3f47db24fe8eb3e32f0f6f30046eebd4c044cdd28979a5f33

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

Filesize
7KB

MD5
0244bf5e4963216eef82cc37a58971a3

SHA1
53a1d7f4477302a78c38479a33b4c7a68fd6b0f0

SHA256
b1ec9354e6e0339956d9e995e1b0ae3df9689b47ff65c2d4e51a0d423bf27a19

SHA512
c7d7e734fb3f84a42134b2a8cb4f9e20af87a9385bc2bd525fa6afc75fbc0963a2071ce38fa006e66c6b4fd6d01be7e4b12182a17281197d6de7f6683105dc24

Download Submit
memory/1704-0-0x00000000748BE000-0x00000000748BF000-memory.dmp

Filesize
4KB

Download
memory/1704-1-0x0000000001140000-0x000000000124C000-memory.dmp

Filesize
1.0MB

Download
memory/1704-2-0x00000000748B0000-0x0000000074F9E000-memory.dmp

Filesize
6.9MB

Download
memory/1704-3-0x00000000009C0000-0x00000000009DC000-memory.dmp

Filesize
112KB

Download
memory/1704-4-0x00000000748BE000-0x00000000748BF000-memory.dmp

Filesize
4KB

Download
memory/1704-5-0x00000000748B0000-0x0000000074F9E000-memory.dmp

Filesize
6.9MB

Download
memory/1704-6-0x000000000A7A0000-0x000000000A860000-memory.dmp

Filesize
768KB

Download
memory/1704-42-0x00000000748B0000-0x0000000074F9E000-memory.dmp

Filesize
6.9MB

Download
memory/2172-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2172-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2172-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads