remcos | 918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87

General

Target

C3C8E7B07E16739C1C0B79F5FF91479F.exe
Size

5.2MB
MD5

c3c8e7b07e16739c1c0b79f5ff91479f
SHA1

5de5162c4f4c76a1fbcc281f26a02486f626f29a
SHA256

918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87
SHA512

cef48c9be82f4db90c68443630d58084aae1aea054bca82803d51ab63226ca085e1c05b393505dd9442c832b1c59e6720ff217d61200ac9011159d145ac33ba4
SSDEEP

49152:/IFXei/uNQrNQDuNz6jk+1n+Vu1cJ+TsehmvK718uFvvPRSTp8UX6:/QN8DU6jn+V8/IeIA8u08UX6

Score

10^/10

remcos rosas discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

ROSAS

C2

newstaticfreepoint24.ddns-ip.net:3020

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
registros.dat
keylog_flag
false
keylog_folder
data
mouse_option
false
mutex
kljjbdlcjbavhbiluiewliuwqerlib-DDZVN3
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Capturas de pantalla
screenshot_path
%AppData%
screenshot_time
10
startup_value
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\userModel = "C:\\Users\\Admin\\Favorites\\my-web-app\\backend\\userModel.exe"	C3C8E7B07E16739C1C0B79F5FF91479F.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	C3C8E7B07E16739C1C0B79F5FF91479F.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	C3C8E7B07E16739C1C0B79F5FF91479F.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2704	C3C8E7B07E16739C1C0B79F5FF91479F.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 2704	3056	C3C8E7B07E16739C1C0B79F5FF91479F.exe	30
PID 3056 wrote to memory of 2704	3056	C3C8E7B07E16739C1C0B79F5FF91479F.exe	30
PID 3056 wrote to memory of 2704	3056	C3C8E7B07E16739C1C0B79F5FF91479F.exe	30
PID 3056 wrote to memory of 2704	3056	C3C8E7B07E16739C1C0B79F5FF91479F.exe	30
PID 3056 wrote to memory of 2704	3056	C3C8E7B07E16739C1C0B79F5FF91479F.exe	30
PID 3056 wrote to memory of 2704	3056	C3C8E7B07E16739C1C0B79F5FF91479F.exe	30

C:\Users\Admin\AppData\Local\Temp\C3C8E7B07E16739C1C0B79F5FF91479F.exe
"C:\Users\Admin\AppData\Local\Temp\C3C8E7B07E16739C1C0B79F5FF91479F.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Users\Admin\AppData\Local\Temp\C3C8E7B07E16739C1C0B79F5FF91479F.exe
  "C:\Users\Admin\AppData\Local\Temp\C3C8E7B07E16739C1C0B79F5FF91479F.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

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:\ProgramData\data\registros.dat

Filesize
184B

MD5
fcf653509983d9d7ebfaca77d20f963b

SHA1
e9fc1dfd660061e4edb5eb2f2924e2d5f36ccfbb

SHA256
37a7af72de949b42ed3663d075a3e98ea0fef928dcd782d543b482c646f27d31

SHA512
1522c29eb7afd8899ccd7f6200b9aa3555322d0009f5873c23eee4725b910deacdaa2b65b6c6d2ae83b2e6321e09e6ed83172f7a4dd6163f0826ab689d90131e

Download Submit
memory/2704-16-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-8-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-15-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-19-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-17-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-12-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-9-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-13-0x0000000000400000-0x000000000093F000-memory.dmp

Filesize
5.2MB

Download
memory/2704-14-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-48-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-6-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-2-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-4-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2704-23-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-24-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-47-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-31-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-40-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2704-39-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/3056-1-0x0000000000400000-0x000000000093F000-memory.dmp

Filesize
5.2MB

Download
memory/3056-0-0x000000000042F000-0x0000000000432000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads