remcos | 4b20d12e0ce7ca19e3afcc3c65f2d381b3255edd324759a726680479d4930352

General

Target

122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe
Size

4.0MB
MD5

b72afa37981b50e6862c7c1260af5113
SHA1

afda1efc437e94754092324d28ddf05a9fa4a3d7
SHA256

a004b63f525bbd97d81ea535692062a89cf8dcea9f5426b54086c7d2f349344b
SHA512

580143f18d26616ddfb67e890e2db5582cee81ba2d3dbb5bad273e139808c05639e20b16253e2fbc3ad29e4f1e1455d68c52d69d0f9dfab5f049767da17b8847
SSDEEP

49152:yUSFxgUgoJUcaqCDxgZ5RPLOqYEicaC+1R3mmpk9RLb+7wEejKIYjn4N:bUgoJUBZ2vPLOqFajv3m6kkS

Score

10^/10

remcos nitidooo discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

NITIDOOO

C2

septiembre24.con-ip.com:7773

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-0QEPSE
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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\OcuulusUpdater = "C:\\Users\\Admin\\Music\\OcoulsUpdater\\EyesUpdater.exe"	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.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	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2820	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2820	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2820	2668	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe	30
PID 2668 wrote to memory of 2820	2668	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe	30
PID 2668 wrote to memory of 2820	2668	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe	30
PID 2668 wrote to memory of 2820	2668	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe	30
PID 2668 wrote to memory of 2820	2668	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe	30
PID 2668 wrote to memory of 2820	2668	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe	30

C:\Users\Admin\AppData\Local\Temp\122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe
"C:\Users\Admin\AppData\Local\Temp\122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2668
- C:\Users\Admin\AppData\Local\Temp\122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe
  "C:\Users\Admin\AppData\Local\Temp\122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:2820

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
c744ff722c3c297c1ea66c7feeb2809b

SHA1
9d448e40cd8adf0218774e4633938e9e58e9ef95

SHA256
ecbe68769e0e699da84941a63f9dfae58d47608a479a5e36c845a908fd6c1319

SHA512
ca49d8c6355cacd5564c1b979cf55fb3393495e3f6047b017f34afca047efafb56ef5164ca526994e241bae308a890bc04c8864402116ebbec87d405d44a97de

Download Submit
memory/2668-16-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2668-2-0x0000000000420000-0x0000000000438000-memory.dmp

Filesize
96KB

Download
memory/2668-1-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2668-7-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2668-6-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2668-13-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2668-29-0x0000000000420000-0x0000000000438000-memory.dmp

Filesize
96KB

Download
memory/2668-0-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2668-5-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2668-4-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2820-15-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-31-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-20-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-17-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-22-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-23-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-24-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-25-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-12-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-30-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-21-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2820-8-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-39-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-40-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-47-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-48-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-55-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-56-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-63-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2820-64-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads