remcos | 425fae95f11030526dd3a7e8dd94e93a52146be446be6095a96f1af53b13deab

General

Target

preliminary drawing.exe
Size

981KB
MD5

164b1d640db37d9f5c95c23d816ffd69
SHA1

5fff09a87a47d38077a08aa917bab542e8317682
SHA256

425fae95f11030526dd3a7e8dd94e93a52146be446be6095a96f1af53b13deab
SHA512

067bb44a7871b2ea63780cc2a3ea01000d742490b1e65e3211fbd9f3c004d03002689a4575077cc6a34ff36af073897afad0d526f5fc9aecb05b491143370df6
SSDEEP

24576:ubmYZg5hIgJsKsVWArhOX79ObyTUk9GgnAn1bij:w9JgEWymbTU1gk0j

Score

10^/10

remcos remcohost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemcoHost

C2

31.13.224.237:2404

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-VETI36
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 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2920	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2612 set thread context of 2684	2612	preliminary drawing.exe	32

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 3 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	preliminary drawing.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	preliminary drawing.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2920	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2920	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 2920	2612	preliminary drawing.exe	30
PID 2612 wrote to memory of 2920	2612	preliminary drawing.exe	30
PID 2612 wrote to memory of 2920	2612	preliminary drawing.exe	30
PID 2612 wrote to memory of 2920	2612	preliminary drawing.exe	30
PID 2612 wrote to memory of 2684	2612	preliminary drawing.exe	32
PID 2612 wrote to memory of 2684	2612	preliminary drawing.exe	32
PID 2612 wrote to memory of 2684	2612	preliminary drawing.exe	32
PID 2612 wrote to memory of 2684	2612	preliminary drawing.exe	32
PID 2612 wrote to memory of 2684	2612	preliminary drawing.exe	32
PID 2612 wrote to memory of 2684	2612	preliminary drawing.exe	32
PID 2612 wrote to memory of 2684	2612	preliminary drawing.exe	32
PID 2612 wrote to memory of 2684	2612	preliminary drawing.exe	32
PID 2612 wrote to memory of 2684	2612	preliminary drawing.exe	32
PID 2612 wrote to memory of 2684	2612	preliminary drawing.exe	32
PID 2612 wrote to memory of 2684	2612	preliminary drawing.exe	32

C:\Users\Admin\AppData\Local\Temp\preliminary drawing.exe
"C:\Users\Admin\AppData\Local\Temp\preliminary drawing.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2612
- 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\preliminary drawing.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2920
- C:\Users\Admin\AppData\Local\Temp\preliminary drawing.exe
  "C:\Users\Admin\AppData\Local\Temp\preliminary drawing.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

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

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Downloads

memory/2612-0-0x0000000074B4E000-0x0000000074B4F000-memory.dmp

Filesize
4KB

Download
memory/2612-1-0x0000000001390000-0x000000000148C000-memory.dmp

Filesize
1008KB

Download
memory/2612-2-0x0000000074B40000-0x000000007522E000-memory.dmp

Filesize
6.9MB

Download
memory/2612-3-0x0000000001270000-0x0000000001362000-memory.dmp

Filesize
968KB

Download
memory/2612-4-0x0000000000780000-0x000000000079C000-memory.dmp

Filesize
112KB

Download
memory/2612-5-0x0000000074B4E000-0x0000000074B4F000-memory.dmp

Filesize
4KB

Download
memory/2612-6-0x0000000074B40000-0x000000007522E000-memory.dmp

Filesize
6.9MB

Download
memory/2612-7-0x0000000005560000-0x0000000005622000-memory.dmp

Filesize
776KB

Download
memory/2612-30-0x0000000074B40000-0x000000007522E000-memory.dmp

Filesize
6.9MB

Download
memory/2684-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2684-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-10-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-8-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2684-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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