remcos | 8c8cad5c12f471f42d5992e71bd32478aedb40af922b03ef4920047012c04d1f

General

Target

Quotation.exe
Size

1.0MB
MD5

3fcb3ba201b234234bc5d65d20afe8f4
SHA1

78917404e82b3bb709ce2caa6a2c291922f1539f
SHA256

8c8cad5c12f471f42d5992e71bd32478aedb40af922b03ef4920047012c04d1f
SHA512

6d8e182c3386d724aa6e7d6bd266606a31db3b2f553080e03955f04c8c7f80130b67faa6c5f2d7ceb2148f6f638d97dc90296f0ae92354592562c2f1724b714a
SSDEEP

24576:L8M3chivYWuMmZIAsS9IfjYf/K2VG4ei4qHAlBTbhkBNQqzcnoT:TQBvIHSfVGoxKhyNpzcnI

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

23.95.235.18:2557

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-E0JKXE
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 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2836	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1640 set thread context of 2740	1640	Quotation.exe	33

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

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1640	Quotation.exe
1640	Quotation.exe
1640	Quotation.exe
1640	Quotation.exe
1640	Quotation.exe
1640	Quotation.exe
1640	Quotation.exe
2836	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1640	Quotation.exe
Token: SeDebugPrivilege	2836	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 2836	1640	Quotation.exe	31
PID 1640 wrote to memory of 2836	1640	Quotation.exe	31
PID 1640 wrote to memory of 2836	1640	Quotation.exe	31
PID 1640 wrote to memory of 2836	1640	Quotation.exe	31
PID 1640 wrote to memory of 2740	1640	Quotation.exe	33
PID 1640 wrote to memory of 2740	1640	Quotation.exe	33
PID 1640 wrote to memory of 2740	1640	Quotation.exe	33
PID 1640 wrote to memory of 2740	1640	Quotation.exe	33
PID 1640 wrote to memory of 2740	1640	Quotation.exe	33
PID 1640 wrote to memory of 2740	1640	Quotation.exe	33
PID 1640 wrote to memory of 2740	1640	Quotation.exe	33
PID 1640 wrote to memory of 2740	1640	Quotation.exe	33
PID 1640 wrote to memory of 2740	1640	Quotation.exe	33
PID 1640 wrote to memory of 2740	1640	Quotation.exe	33
PID 1640 wrote to memory of 2740	1640	Quotation.exe	33
PID 1640 wrote to memory of 2740	1640	Quotation.exe	33
PID 1640 wrote to memory of 2740	1640	Quotation.exe	33

C:\Users\Admin\AppData\Local\Temp\Quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1640
- 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\Quotation.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2836
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2740

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/1640-0-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/1640-1-0x0000000001280000-0x000000000138A000-memory.dmp

Filesize
1.0MB

Download
memory/1640-2-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/1640-3-0x00000000006D0000-0x00000000006E8000-memory.dmp

Filesize
96KB

Download
memory/1640-4-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/1640-5-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/1640-6-0x0000000004BA0000-0x0000000004C60000-memory.dmp

Filesize
768KB

Download
memory/1640-23-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/2740-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2740-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-9-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-10-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-7-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2740-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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