remcos | be0872dd2d22a3935c12012c0364d9a051f12e9f25d45fff274293e2db95b30a

General

Target

solicitud de pedido C2021103XU_31429000,pdf.exe
Size

489KB
MD5

f2b018b033f7a8f4e9ef3565b5783f17
SHA1

a4a942d9d70a91ba3567b79342655997fb88d77e
SHA256

1a66f1a07d4d92b27eb0f2c2805c468a6d210d50d51dd3134e4812986dcc8d09
SHA512

99892a04aecea4159a4fe04c327cc9a0d04bcded98f4d697519451e0a2fdc5a4b19ddd68e680db9d1549037053b69f234f49faf56f8851ffebeed6a51a7613bc
SSDEEP

12288:x3XDkDNf+hL/U85lCIlLFy0Ws3YRYCAcB3zK8BWbp:xAbULFPWf15zK8m

Score

10^/10

remcos aaaaaaaaaaaa discovery rat

Malware Config

Extracted

Family

remcos

Version

2.7.1 Pro

Botnet

AAAAAAAAAAAA

C2

goddywin.freedynamicdns.net:6712

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-X6O017
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
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	solicitud de pedido C2021103XU_31429000,pdf.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2140 set thread context of 2184	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	101

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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	solicitud de pedido C2021103XU_31429000,pdf.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
3328	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2140	solicitud de pedido C2021103XU_31429000,pdf.exe
2140	solicitud de pedido C2021103XU_31429000,pdf.exe
2140	solicitud de pedido C2021103XU_31429000,pdf.exe
2140	solicitud de pedido C2021103XU_31429000,pdf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2140	solicitud de pedido C2021103XU_31429000,pdf.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 3328	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	99
PID 2140 wrote to memory of 3328	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	99
PID 2140 wrote to memory of 3328	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	99
PID 2140 wrote to memory of 2184	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	101
PID 2140 wrote to memory of 2184	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	101
PID 2140 wrote to memory of 2184	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	101
PID 2140 wrote to memory of 2184	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	101
PID 2140 wrote to memory of 2184	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	101
PID 2140 wrote to memory of 2184	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	101
PID 2140 wrote to memory of 2184	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	101
PID 2140 wrote to memory of 2184	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	101
PID 2140 wrote to memory of 2184	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	101
PID 2140 wrote to memory of 2184	2140	solicitud de pedido C2021103XU_31429000,pdf.exe	101

C:\Users\Admin\AppData\Local\Temp\solicitud de pedido C2021103XU_31429000,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\solicitud de pedido C2021103XU_31429000,pdf.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:2140
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uLZJriL" /XML "C:\Users\Admin\AppData\Local\Temp\tmp293E.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3328
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "{path}"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2184

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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

Query Registry

1

T1012

System Information Discovery

2

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:\Users\Admin\AppData\Local\Temp\tmp293E.tmp

Filesize
1KB

MD5
7dccfd46957469f3b1d2e2ac5ed7c33e

SHA1
763657c27805ac871e9dddef5f33a35de9ff2df0

SHA256
be984abd04d61f2653ba37481eb9d2f4f36803ba59190cc3b980f65977b0fe8e

SHA512
8887caf4e5f21ea8e268c95192fffdd320fca9fac3b6f970f3da70ede549c408f01a1f10e71aadd642d21dcae0202394ddd0aa7ee0e7985abd09e24fd9ca41e7

Download Submit
memory/2140-6-0x0000000008F90000-0x000000000902C000-memory.dmp

Filesize
624KB

Download
memory/2140-5-0x0000000002B20000-0x0000000002B2A000-memory.dmp

Filesize
40KB

Download
memory/2140-8-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/2140-4-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/2140-2-0x0000000007E20000-0x00000000083C4000-memory.dmp

Filesize
5.6MB

Download
memory/2140-0-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/2140-7-0x0000000008EF0000-0x0000000008EF8000-memory.dmp

Filesize
32KB

Download
memory/2140-20-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/2140-9-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/2140-10-0x000000000A5A0000-0x000000000A612000-memory.dmp

Filesize
456KB

Download
memory/2140-11-0x0000000008F40000-0x0000000008F70000-memory.dmp

Filesize
192KB

Download
memory/2140-1-0x0000000000690000-0x0000000000712000-memory.dmp

Filesize
520KB

Download
memory/2140-3-0x0000000007970000-0x0000000007A02000-memory.dmp

Filesize
584KB

Download
memory/2184-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2184-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2184-19-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2184-21-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2184-22-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2184-23-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2184-24-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2184-25-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2184-29-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2184-33-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2184-35-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2184-37-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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