remcos | e655c8c61a403dd0eed96a6b1a7efe5705393fec6e7ae498799c8c68c88a685e

General

Target

56d0c983a914902fb6a47bd70fd6a260N.exe
Size

1.2MB
MD5

56d0c983a914902fb6a47bd70fd6a260
SHA1

8d46fcb3c3c6461bfa83355d81cae10ac3356421
SHA256

e655c8c61a403dd0eed96a6b1a7efe5705393fec6e7ae498799c8c68c88a685e
SHA512

1e4e931022afbad49e24743870d019a4398192489aed08a31d6d655f291588d02fabfc331a39447c9d89eaf3238e49d886be0196cf6b9247281eedd07fc7a5a9
SSDEEP

24576:QAHnh+eWsN3skA4RV1Hom2KXcmtcajS3SKDvVXH62dxbT5:Hh+ZkldoPKsacajSC6Xd

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.175.229.139:8823

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-2BGC0K
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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\benting.vbs	benting.exe

Executes dropped EXE 1 IoCs

pid	Process
3912	benting.exe

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3824-0-0x00000000001F0000-0x0000000000335000-memory.dmp	autoit_exe
behavioral2/files/0x00030000000229cb-14.dat	autoit_exe
behavioral2/memory/3912-15-0x00000000006D0000-0x0000000000815000-memory.dmp	autoit_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	56d0c983a914902fb6a47bd70fd6a260N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	benting.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3824 wrote to memory of 3912	3824	56d0c983a914902fb6a47bd70fd6a260N.exe	86
PID 3824 wrote to memory of 3912	3824	56d0c983a914902fb6a47bd70fd6a260N.exe	86
PID 3824 wrote to memory of 3912	3824	56d0c983a914902fb6a47bd70fd6a260N.exe	86

C:\Users\Admin\AppData\Local\Temp\56d0c983a914902fb6a47bd70fd6a260N.exe
"C:\Users\Admin\AppData\Local\Temp\56d0c983a914902fb6a47bd70fd6a260N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3824
- C:\Users\Admin\AppData\Local\hepatoduodenostomy\benting.exe
  "C:\Users\Admin\AppData\Local\Temp\56d0c983a914902fb6a47bd70fd6a260N.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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
c47ca216fccfa58febbe5430d9db3157

SHA1
ff58576aea1071a089e65bf219ff87e1a5a87b6b

SHA256
ad9eb7d07d42acf97c346c5bdf9d8d7fbd843698b15cd19acb37e095224de275

SHA512
833e572aea581ca83de056e05ba2f6672d448da733538e1a21edcde920e38d6462b9563ee58514e6f8c4a679b45856d3e1c0df079226ab0d9c3c5afaf798e3fa

Download Submit
C:\Users\Admin\AppData\Local\hepatoduodenostomy\benting.exe

Filesize
1.2MB

MD5
56d0c983a914902fb6a47bd70fd6a260

SHA1
8d46fcb3c3c6461bfa83355d81cae10ac3356421

SHA256
e655c8c61a403dd0eed96a6b1a7efe5705393fec6e7ae498799c8c68c88a685e

SHA512
1e4e931022afbad49e24743870d019a4398192489aed08a31d6d655f291588d02fabfc331a39447c9d89eaf3238e49d886be0196cf6b9247281eedd07fc7a5a9

Download Submit
memory/3824-11-0x0000000001BA0000-0x0000000001BA4000-memory.dmp

Filesize
16KB

Download
memory/3824-0-0x00000000001F0000-0x0000000000335000-memory.dmp

Filesize
1.3MB

Download
memory/3912-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-15-0x00000000006D0000-0x0000000000815000-memory.dmp

Filesize
1.3MB

Download
memory/3912-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3912-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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