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-1-5-21-2718105630-359604950-2820636825-1000\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 use of SetWindowsHookEx 1 IoCs

pid	Process
552	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 552	2208	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe	87
PID 2208 wrote to memory of 552	2208	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe	87
PID 2208 wrote to memory of 552	2208	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe	87
PID 2208 wrote to memory of 552	2208	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe	87
PID 2208 wrote to memory of 552	2208	122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe	87

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:2208
- C:\Users\Admin\AppData\Local\Temp\122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe
  "C:\Users\Admin\AppData\Local\Temp\122077711110000000000000000000000000000000000025635252414147475858699663635252414147478585.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:552

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
4c6f776e396f811733172a4c68601509

SHA1
a1f02b4b062ab4efe2b0d1ff33571bb3d5d49793

SHA256
eea1a0850daa4ddd09fa6eba182fcaf52bfcde5ba774d1c1fe0c192f03927a88

SHA512
e442bbbbf4ab578efe091ade9b740ac9017abe40f8a638eeb2a57335137898cdfc3b496122bade7a1b0038451ee9d3bf32097ace700b734ef1f3ed8d14af9a47

Download Submit
memory/552-27-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-60-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-17-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-59-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-43-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-36-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-12-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-16-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-13-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-11-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-7-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-35-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-18-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/552-26-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-21-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-19-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/552-20-0x0000000000840000-0x00000000008C2000-memory.dmp

Filesize
520KB

Download
memory/2208-2-0x0000000000420000-0x0000000000438000-memory.dmp

Filesize
96KB

Download
memory/2208-25-0x0000000000420000-0x0000000000438000-memory.dmp

Filesize
96KB

Download
memory/2208-1-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2208-0-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2208-5-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2208-4-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2208-10-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2208-9-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2208-6-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2208-3-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads