remcos | 8225dafaee7b3d011df2edcb8dc635f2b3770d3977d45bb7c763227868a50afa

General

Target

ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe
Size

1.5MB
MD5

faf49e0af5229a853c23b649724aeef4
SHA1

56164915b4528cd3902e11fb379023e1098767b6
SHA256

25c2386fe9a66c179152b8c97e006d8d213c2923afeb897b7a60ecc9e0f28ec1
SHA512

bfb41c8092f3ad71e3a7cbce0747c70dbecb3474d5458cf464f387728a238993441ddc21342c7f5be2a2428fbf72d26bf5b4d1a0389a587138c9ed1cd30fdc0c
SSDEEP

49152:Xdw4s5atF5YeEpoK6rskkc3OEcZwQP39Z:X+4tHYeEySdE4xPH

Score

10^/10

remcos tottefan discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

TOTTEFAN

C2

ijdfidjsbfjisbdfv.con-ip.com:1667

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-4BKKLL
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat 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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\AgentLauncher = "C:\\Users\\Admin\\Pictures\\ClientAgent\\AgentLauncher.exe"	ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.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	ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2336	ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2336	ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 2336	2548	ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe	31
PID 2548 wrote to memory of 2336	2548	ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe	31
PID 2548 wrote to memory of 2336	2548	ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe	31
PID 2548 wrote to memory of 2336	2548	ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe	31
PID 2548 wrote to memory of 2336	2548	ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe	31
PID 2548 wrote to memory of 2336	2548	ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe	31

C:\Users\Admin\AppData\Local\Temp\ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe
"C:\Users\Admin\AppData\Local\Temp\ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Users\Admin\AppData\Local\Temp\ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe
  "C:\Users\Admin\AppData\Local\Temp\ACCIÓN INTERBANCARIA - TRANSACCIONES ACH.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:2336

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\remcos\logs.dat

Filesize
144B

MD5
10fb973f6df484f03e7e8072ce98633b

SHA1
4601fec3a1fc05d981bdcf6b70c19982d7bfa1af

SHA256
8efddca825e123e1203c7d2198566cc96cd620095317faa26288505bfd340651

SHA512
eee51efaa7f3a26ff3263030d0e580c789afc06c9042493886d31783d42828f4c09016b29364628ac7987eb7271a1f7a3595cc763be01291c4c26c7b9c5738eb

Download Submit
memory/2336-37-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-36-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-65-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-17-0x0000000000400000-0x000000000058B000-memory.dmp

Filesize
1.5MB

Download
memory/2336-16-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-64-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-58-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-55-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-53-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-11-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2336-7-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-54-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-21-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-51-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-25-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-50-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-22-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-26-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-27-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-30-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2336-18-0x00000000001B0000-0x0000000000232000-memory.dmp

Filesize
520KB

Download
memory/2548-0-0x0000000000400000-0x000000000058B000-memory.dmp

Filesize
1.5MB

Download
memory/2548-1-0x0000000000417000-0x0000000000430000-memory.dmp

Filesize
100KB

Download
memory/2548-13-0x0000000000400000-0x000000000058B000-memory.dmp

Filesize
1.5MB

Download
memory/2548-14-0x0000000000400000-0x000000000058B000-memory.dmp

Filesize
1.5MB

Download
memory/2548-5-0x0000000000400000-0x000000000058B000-memory.dmp

Filesize
1.5MB

Download
memory/2548-23-0x0000000000417000-0x0000000000430000-memory.dmp

Filesize
100KB

Download
memory/2548-12-0x0000000000400000-0x000000000058B000-memory.dmp

Filesize
1.5MB

Download
memory/2548-3-0x0000000000400000-0x000000000058B000-memory.dmp

Filesize
1.5MB

Download
memory/2548-6-0x0000000000400000-0x000000000058B000-memory.dmp

Filesize
1.5MB

Download
memory/2548-4-0x0000000000400000-0x000000000058B000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads