remcos | 5c9f0151f15af69c86635e6dd7d24beedd2059f743ffa4de701c0a7cd436b5c3

General

Target

BBraun PO#4502070446.pdf.exe
Size

1.3MB
MD5

df1fd6251ca5c3190db93d88fbd0fd82
SHA1

8a245167c2b47d38c6292901d566f685a7b5b89b
SHA256

562c0af891a608f9bb5f89b91b56ae8fbbf57a43b3c4f2f4d0ce7e61f62e3401
SHA512

1c744172f20835f233e529154dd59a6bcfa20a0c5b89765dedbde51a3b562202afdcc53a9b440968a7430fd4bb1a33773183f48becee9f2f4d593e0c06acfeea
SSDEEP

24576:PAHnh+eWsN3skA4RV1Hom2KXMmHa1FRkTNnS3hKBrz45yr6c1guY3uAGH1sFX5:yh+ZkldoPK8Ya1FRkT03hKBnt1nAxj

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

154.216.18.157:2404

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-N639VY
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2028 set thread context of 840	2028	BBraun PO#4502070446.pdf.exe	29

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	BBraun PO#4502070446.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2028	BBraun PO#4502070446.pdf.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2028	BBraun PO#4502070446.pdf.exe
2028	BBraun PO#4502070446.pdf.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2028	BBraun PO#4502070446.pdf.exe
2028	BBraun PO#4502070446.pdf.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 840	2028	BBraun PO#4502070446.pdf.exe	29
PID 2028 wrote to memory of 840	2028	BBraun PO#4502070446.pdf.exe	29
PID 2028 wrote to memory of 840	2028	BBraun PO#4502070446.pdf.exe	29
PID 2028 wrote to memory of 840	2028	BBraun PO#4502070446.pdf.exe	29
PID 2028 wrote to memory of 840	2028	BBraun PO#4502070446.pdf.exe	29

C:\Users\Admin\AppData\Local\Temp\BBraun PO#4502070446.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\BBraun PO#4502070446.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\BBraun PO#4502070446.pdf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:840

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/840-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/840-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2028-11-0x0000000000380000-0x0000000000384000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing