remcos | bb982ea4dad990c5c393a7f1fb85a4daf85be97edcb1e1473cdd0703596ecd6d

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2024, 12:29

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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

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
2244	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	Payment Voucher.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2452 set thread context of 2268	2452	Payment Voucher.exe	93

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	Payment Voucher.exe
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

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
2692	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2244	powershell.exe
2244	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2244	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2452 wrote to memory of 2244	2452	Payment Voucher.exe	89
PID 2452 wrote to memory of 2244	2452	Payment Voucher.exe	89
PID 2452 wrote to memory of 2244	2452	Payment Voucher.exe	89
PID 2452 wrote to memory of 2692	2452	Payment Voucher.exe	91
PID 2452 wrote to memory of 2692	2452	Payment Voucher.exe	91
PID 2452 wrote to memory of 2692	2452	Payment Voucher.exe	91
PID 2452 wrote to memory of 2268	2452	Payment Voucher.exe	93
PID 2452 wrote to memory of 2268	2452	Payment Voucher.exe	93
PID 2452 wrote to memory of 2268	2452	Payment Voucher.exe	93
PID 2452 wrote to memory of 2268	2452	Payment Voucher.exe	93
PID 2452 wrote to memory of 2268	2452	Payment Voucher.exe	93
PID 2452 wrote to memory of 2268	2452	Payment Voucher.exe	93
PID 2452 wrote to memory of 2268	2452	Payment Voucher.exe	93
PID 2452 wrote to memory of 2268	2452	Payment Voucher.exe	93
PID 2452 wrote to memory of 2268	2452	Payment Voucher.exe	93
PID 2452 wrote to memory of 2268	2452	Payment Voucher.exe	93
PID 2452 wrote to memory of 2268	2452	Payment Voucher.exe	93
PID 2452 wrote to memory of 2268	2452	Payment Voucher.exe	93

C:\Users\Admin\AppData\Local\Temp\Payment Voucher.exe
"C:\Users\Admin\AppData\Local\Temp\Payment Voucher.exe"
1⤵
- Checks computer location settings
- 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:2244
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GwTIUBUaZCliF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA141.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2692
- 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:2268

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pu1ygznv.say.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA141.tmp

Filesize
1KB

MD5
974a83e799ac61ab118fee4404a9cece

SHA1
87fbc652611b8855fcb5ad86fd765fa20775d2a3

SHA256
5fe7203dce25e59a1615788a8160bee059d29cf031265f6fa13ef27245a1b7f4

SHA512
68fb6b46fbfe9bb44b7eaceec531a1e3d14070118bd79841c8fe58e6f0eef2d1258850b81b113c2c651fdd6b967250af5b5486d2e48a716827f90b847506d6c8

Download Submit
memory/2244-41-0x0000000005DE0000-0x0000000005DFE000-memory.dmp

Filesize
120KB

Download
memory/2244-40-0x00000000057D0000-0x0000000005B24000-memory.dmp

Filesize
3.3MB

Download
memory/2244-19-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/2244-42-0x0000000005E70000-0x0000000005EBC000-memory.dmp

Filesize
304KB

Download
memory/2244-72-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/2244-68-0x0000000007460000-0x000000000747A000-memory.dmp

Filesize
104KB

Download
memory/2244-69-0x0000000007440000-0x0000000007448000-memory.dmp

Filesize
32KB

Download
memory/2244-67-0x0000000007360000-0x0000000007374000-memory.dmp

Filesize
80KB

Download
memory/2244-66-0x0000000007350000-0x000000000735E000-memory.dmp

Filesize
56KB

Download
memory/2244-65-0x0000000007320000-0x0000000007331000-memory.dmp

Filesize
68KB

Download
memory/2244-64-0x00000000073A0000-0x0000000007436000-memory.dmp

Filesize
600KB

Download
memory/2244-63-0x0000000007190000-0x000000000719A000-memory.dmp

Filesize
40KB

Download
memory/2244-26-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/2244-61-0x0000000007760000-0x0000000007DDA000-memory.dmp

Filesize
6.5MB

Download
memory/2244-62-0x0000000007120000-0x000000000713A000-memory.dmp

Filesize
104KB

Download
memory/2244-60-0x0000000007020000-0x00000000070C3000-memory.dmp

Filesize
652KB

Download
memory/2244-48-0x0000000006410000-0x0000000006442000-memory.dmp

Filesize
200KB

Download
memory/2244-49-0x0000000071820000-0x000000007186C000-memory.dmp

Filesize
304KB

Download
memory/2244-59-0x00000000063C0000-0x00000000063DE000-memory.dmp

Filesize
120KB

Download
memory/2244-15-0x0000000002500000-0x0000000002536000-memory.dmp

Filesize
216KB

Download
memory/2244-28-0x0000000004D20000-0x0000000004D42000-memory.dmp

Filesize
136KB

Download
memory/2244-18-0x0000000004FB0000-0x00000000055D8000-memory.dmp

Filesize
6.2MB

Download
memory/2244-29-0x0000000004EC0000-0x0000000004F26000-memory.dmp

Filesize
408KB

Download
memory/2244-30-0x00000000055E0000-0x0000000005646000-memory.dmp

Filesize
408KB

Download
memory/2244-17-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/2268-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2268-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2452-3-0x0000000005A70000-0x0000000005B02000-memory.dmp

Filesize
584KB

Download
memory/2452-2-0x0000000006020000-0x00000000065C4000-memory.dmp

Filesize
5.6MB

Download
memory/2452-1-0x0000000000F60000-0x0000000001048000-memory.dmp

Filesize
928KB

Download
memory/2452-0-0x00000000750DE000-0x00000000750DF000-memory.dmp

Filesize
4KB

Download
memory/2452-5-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/2452-6-0x0000000006000000-0x0000000006010000-memory.dmp

Filesize
64KB

Download
memory/2452-7-0x00000000750DE000-0x00000000750DF000-memory.dmp

Filesize
4KB

Download
memory/2452-8-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/2452-9-0x0000000007AC0000-0x0000000007B7E000-memory.dmp

Filesize
760KB

Download
memory/2452-10-0x000000000A130000-0x000000000A1CC000-memory.dmp

Filesize
624KB

Download
memory/2452-27-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/2452-4-0x0000000005A50000-0x0000000005A5A000-memory.dmp

Filesize
40KB

Download