remcos | 918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87

General

Target

918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\userModel = "C:\\Users\\Admin\\Favorites\\my-web-app\\backend\\userModel.exe"	918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.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	918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2928	918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2928	1968	918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.exe	31
PID 1968 wrote to memory of 2928	1968	918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.exe	31
PID 1968 wrote to memory of 2928	1968	918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.exe	31
PID 1968 wrote to memory of 2928	1968	918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.exe	31
PID 1968 wrote to memory of 2928	1968	918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.exe	31
PID 1968 wrote to memory of 2928	1968	918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.exe	31

C:\Users\Admin\AppData\Local\Temp\918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.exe
"C:\Users\Admin\AppData\Local\Temp\918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Users\Admin\AppData\Local\Temp\918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.exe
  "C:\Users\Admin\AppData\Local\Temp\918c574b7b2841d4dfafd36d23940f4b5f9636ccfb483589ff7df63967ddcf87.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2928

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
5bff018c3d9fb2ef82b828f7ef7bfa0e

SHA1
53d2dfbb7588155fb39ec639da1436bd82271cf0

SHA256
7ef722305b98cecdee92967d5b0c6ad79746a1c6372e0338d0a53b3b73f46a19

SHA512
664739913aeb34cae8c073c3ef6a78be0115ecc645454ec01bbfc1d762c1dfdb123cbb15087f806cd98dd869211033913902c67fa6b056ab9487dabce7ceed15

Download Submit
memory/1968-0-0x000000000042F000-0x0000000000432000-memory.dmp

Filesize
12KB

Download
memory/1968-1-0x0000000000400000-0x000000000093F000-memory.dmp

Filesize
5.2MB

Download
memory/2928-19-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-2-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-12-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-13-0x0000000000400000-0x000000000093F000-memory.dmp

Filesize
5.2MB

Download
memory/2928-9-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-8-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-14-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-6-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-20-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-4-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2928-25-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-26-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-32-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-33-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-38-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-39-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-44-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-46-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-51-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download
memory/2928-52-0x00000000001C0000-0x000000000023F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads