remcos | 4bcc9f3996381f8da70f1f1b03186ae93d894c42ac15e7afe7370f77a1f53cee

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-11-2024 16:33

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General

Target

Factura_Pagada.pdf.bat.exe
Size

1.0MB
MD5

7fe5f3f1d077626ddad8406b7975ed87
SHA1

23eba4f75b7960d9edd9679515771cc8ccfe0372
SHA256

4bcc9f3996381f8da70f1f1b03186ae93d894c42ac15e7afe7370f77a1f53cee
SHA512

70ff042c59b1fd4b0ffa18002d239e65ffdc32f7df2d079ba596551de2d23849d236eedcfb580d82e84cc68a2c911af295ef66458f56162bd89753484c9861d8
SSDEEP

24576:32CGzbZCkrpm1sHsqgQYKY4agvoR5ORGIemTzEp6VBw:32CGzbokNMqgQeOAKU1

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

41.216.183.218:56792

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-I5RS8V
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
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
3252	powershell.exe
2956	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

Processes:

Factura_Pagada.pdf.bat.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	Factura_Pagada.pdf.bat.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Factura_Pagada.pdf.bat.exe

description	pid	Process	procid_target
PID 1964 set thread context of 2468	1964	Factura_Pagada.pdf.bat.exe	96

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:

Factura_Pagada.pdf.bat.exepowershell.exepowershell.exeschtasks.exeFactura_Pagada.pdf.bat.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Factura_Pagada.pdf.bat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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	Factura_Pagada.pdf.bat.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
1960	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

Factura_Pagada.pdf.bat.exepowershell.exepowershell.exe

pid	Process
1964	Factura_Pagada.pdf.bat.exe
1964	Factura_Pagada.pdf.bat.exe
1964	Factura_Pagada.pdf.bat.exe
2956	powershell.exe
3252	powershell.exe
1964	Factura_Pagada.pdf.bat.exe
1964	Factura_Pagada.pdf.bat.exe
1964	Factura_Pagada.pdf.bat.exe
1964	Factura_Pagada.pdf.bat.exe
3252	powershell.exe
2956	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Factura_Pagada.pdf.bat.exepowershell.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	1964	Factura_Pagada.pdf.bat.exe
Token: SeDebugPrivilege	2956	powershell.exe
Token: SeDebugPrivilege	3252	powershell.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

Factura_Pagada.pdf.bat.exe

description	pid	Process	procid_target
PID 1964 wrote to memory of 3252	1964	Factura_Pagada.pdf.bat.exe	89
PID 1964 wrote to memory of 3252	1964	Factura_Pagada.pdf.bat.exe	89
PID 1964 wrote to memory of 3252	1964	Factura_Pagada.pdf.bat.exe	89
PID 1964 wrote to memory of 2956	1964	Factura_Pagada.pdf.bat.exe	91
PID 1964 wrote to memory of 2956	1964	Factura_Pagada.pdf.bat.exe	91
PID 1964 wrote to memory of 2956	1964	Factura_Pagada.pdf.bat.exe	91
PID 1964 wrote to memory of 1960	1964	Factura_Pagada.pdf.bat.exe	93
PID 1964 wrote to memory of 1960	1964	Factura_Pagada.pdf.bat.exe	93
PID 1964 wrote to memory of 1960	1964	Factura_Pagada.pdf.bat.exe	93
PID 1964 wrote to memory of 2396	1964	Factura_Pagada.pdf.bat.exe	95
PID 1964 wrote to memory of 2396	1964	Factura_Pagada.pdf.bat.exe	95
PID 1964 wrote to memory of 2396	1964	Factura_Pagada.pdf.bat.exe	95
PID 1964 wrote to memory of 2468	1964	Factura_Pagada.pdf.bat.exe	96
PID 1964 wrote to memory of 2468	1964	Factura_Pagada.pdf.bat.exe	96
PID 1964 wrote to memory of 2468	1964	Factura_Pagada.pdf.bat.exe	96
PID 1964 wrote to memory of 2468	1964	Factura_Pagada.pdf.bat.exe	96
PID 1964 wrote to memory of 2468	1964	Factura_Pagada.pdf.bat.exe	96
PID 1964 wrote to memory of 2468	1964	Factura_Pagada.pdf.bat.exe	96
PID 1964 wrote to memory of 2468	1964	Factura_Pagada.pdf.bat.exe	96
PID 1964 wrote to memory of 2468	1964	Factura_Pagada.pdf.bat.exe	96
PID 1964 wrote to memory of 2468	1964	Factura_Pagada.pdf.bat.exe	96
PID 1964 wrote to memory of 2468	1964	Factura_Pagada.pdf.bat.exe	96
PID 1964 wrote to memory of 2468	1964	Factura_Pagada.pdf.bat.exe	96
PID 1964 wrote to memory of 2468	1964	Factura_Pagada.pdf.bat.exe	96

C:\Users\Admin\AppData\Local\Temp\Factura_Pagada.pdf.bat.exe
"C:\Users\Admin\AppData\Local\Temp\Factura_Pagada.pdf.bat.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1964
- 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\Factura_Pagada.pdf.bat.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3252
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fanBYIAxatVKe.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2956
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fanBYIAxatVKe" /XML "C:\Users\Admin\AppData\Local\Temp\tmp395.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1960
- C:\Users\Admin\AppData\Local\Temp\Factura_Pagada.pdf.bat.exe
  "C:\Users\Admin\AppData\Local\Temp\Factura_Pagada.pdf.bat.exe"
  2⤵
  PID:2396
- C:\Users\Admin\AppData\Local\Temp\Factura_Pagada.pdf.bat.exe
  "C:\Users\Admin\AppData\Local\Temp\Factura_Pagada.pdf.bat.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2468

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\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
32b07f942185950486f1d384d80cd851

SHA1
e27b68918015559310b70f830ec435c13febad2d

SHA256
92a631f6e9740b99726238fe4c6b35db0a2f82c423f724535f637cc3c080e0d5

SHA512
17692dd3832536039efd637e209da3a1448db44319a01a0b8ad6a5fe44adc7c49e1051e6d8d64f3dcdef492c22d41ee00c5d0d30554ed9738722a685bc715281

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m2uxw3ed.zey.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp395.tmp

Filesize
1KB

MD5
2a5a12d71f578aa174576745b7fac470

SHA1
b37d15d7c3b5c49b7e143a0faea7e4917d33c799

SHA256
da1156d79e6030b3e7d213ab73ae4efdf8c5ab514d5b4c277054fc27f8df97cd

SHA512
fc6947595f52487d3839b2c0be9ea9cb2272adc7ee7bfdee550505e74ae2e3078447223e9f0c1dba0e9afb8bfe8ae98a8b37369a435ce4ec1f5a676a264b6641

Download Submit
memory/1964-8-0x00000000054E0000-0x00000000054F2000-memory.dmp

Filesize
72KB

Download
memory/1964-11-0x00000000752DE000-0x00000000752DF000-memory.dmp

Filesize
4KB

Download
memory/1964-6-0x0000000005BE0000-0x0000000005F34000-memory.dmp

Filesize
3.3MB

Download
memory/1964-7-0x0000000005320000-0x00000000053BC000-memory.dmp

Filesize
624KB

Download
memory/1964-4-0x00000000752D0000-0x0000000075A80000-memory.dmp

Filesize
7.7MB

Download
memory/1964-9-0x0000000005530000-0x0000000005552000-memory.dmp

Filesize
136KB

Download
memory/1964-10-0x00000000055F0000-0x000000000560C000-memory.dmp

Filesize
112KB

Download
memory/1964-5-0x0000000002C00000-0x0000000002C0A000-memory.dmp

Filesize
40KB

Download
memory/1964-12-0x00000000752D0000-0x0000000075A80000-memory.dmp

Filesize
7.7MB

Download
memory/1964-13-0x0000000007FF0000-0x00000000080B0000-memory.dmp

Filesize
768KB

Download
memory/1964-0-0x00000000752DE000-0x00000000752DF000-memory.dmp

Filesize
4KB

Download
memory/1964-3-0x0000000005080000-0x0000000005112000-memory.dmp

Filesize
584KB

Download
memory/1964-52-0x00000000752D0000-0x0000000075A80000-memory.dmp

Filesize
7.7MB

Download
memory/1964-2-0x0000000005630000-0x0000000005BD4000-memory.dmp

Filesize
5.6MB

Download
memory/1964-1-0x0000000000590000-0x0000000000694000-memory.dmp

Filesize
1.0MB

Download
memory/2468-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-100-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-99-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-101-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-106-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-105-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2468-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2956-77-0x0000000007380000-0x0000000007391000-memory.dmp

Filesize
68KB

Download
memory/2956-88-0x00000000073B0000-0x00000000073BE000-memory.dmp

Filesize
56KB

Download
memory/2956-24-0x0000000005830000-0x0000000005896000-memory.dmp

Filesize
408KB

Download
memory/2956-71-0x0000000006FD0000-0x0000000006FEE000-memory.dmp

Filesize
120KB

Download
memory/2956-72-0x0000000007030000-0x00000000070D3000-memory.dmp

Filesize
652KB

Download
memory/2956-61-0x0000000075B60000-0x0000000075BAC000-memory.dmp

Filesize
304KB

Download
memory/2956-60-0x0000000006FF0000-0x0000000007022000-memory.dmp

Filesize
200KB

Download
memory/2956-74-0x0000000007180000-0x000000000719A000-memory.dmp

Filesize
104KB

Download
memory/2956-73-0x00000000077C0000-0x0000000007E3A000-memory.dmp

Filesize
6.5MB

Download
memory/2956-75-0x00000000071F0000-0x00000000071FA000-memory.dmp

Filesize
40KB

Download
memory/2956-76-0x0000000007400000-0x0000000007496000-memory.dmp

Filesize
600KB

Download
memory/2956-25-0x00000000752D0000-0x0000000075A80000-memory.dmp

Filesize
7.7MB

Download
memory/2956-23-0x0000000005710000-0x0000000005776000-memory.dmp

Filesize
408KB

Download
memory/2956-26-0x00000000752D0000-0x0000000075A80000-memory.dmp

Filesize
7.7MB

Download
memory/2956-89-0x00000000073C0000-0x00000000073D4000-memory.dmp

Filesize
80KB

Download
memory/2956-90-0x00000000074C0000-0x00000000074DA000-memory.dmp

Filesize
104KB

Download
memory/2956-91-0x00000000074A0000-0x00000000074A8000-memory.dmp

Filesize
32KB

Download
memory/2956-27-0x00000000752D0000-0x0000000075A80000-memory.dmp

Filesize
7.7MB

Download
memory/2956-97-0x00000000752D0000-0x0000000075A80000-memory.dmp

Filesize
7.7MB

Download
memory/3252-98-0x00000000752D0000-0x0000000075A80000-memory.dmp

Filesize
7.7MB

Download
memory/3252-50-0x00000000752D0000-0x0000000075A80000-memory.dmp

Filesize
7.7MB

Download
memory/3252-54-0x0000000005F70000-0x0000000005FBC000-memory.dmp

Filesize
304KB

Download
memory/3252-78-0x0000000075B60000-0x0000000075BAC000-memory.dmp

Filesize
304KB

Download
memory/3252-53-0x00000000059D0000-0x00000000059EE000-memory.dmp

Filesize
120KB

Download
memory/3252-21-0x00000000752D0000-0x0000000075A80000-memory.dmp

Filesize
7.7MB

Download
memory/3252-20-0x00000000752D0000-0x0000000075A80000-memory.dmp

Filesize
7.7MB

Download
memory/3252-19-0x0000000004D30000-0x0000000005358000-memory.dmp

Filesize
6.2MB

Download
memory/3252-18-0x0000000000C90000-0x0000000000CC6000-memory.dmp

Filesize
216KB

Download