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 5024 set thread context of 3916	5024	BBraun PO#4502070446.pdf.exe	89

System Location Discovery: System Language Discovery 1 TTPs 3 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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BBraun PO#4502070446.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BBraun PO#4502070446.pdf.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
924	BBraun PO#4502070446.pdf.exe
5024	BBraun PO#4502070446.pdf.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
924	BBraun PO#4502070446.pdf.exe
924	BBraun PO#4502070446.pdf.exe
5024	BBraun PO#4502070446.pdf.exe
5024	BBraun PO#4502070446.pdf.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
924	BBraun PO#4502070446.pdf.exe
924	BBraun PO#4502070446.pdf.exe
5024	BBraun PO#4502070446.pdf.exe
5024	BBraun PO#4502070446.pdf.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 924 wrote to memory of 1364	924	BBraun PO#4502070446.pdf.exe	87
PID 924 wrote to memory of 1364	924	BBraun PO#4502070446.pdf.exe	87
PID 924 wrote to memory of 1364	924	BBraun PO#4502070446.pdf.exe	87
PID 924 wrote to memory of 5024	924	BBraun PO#4502070446.pdf.exe	88
PID 924 wrote to memory of 5024	924	BBraun PO#4502070446.pdf.exe	88
PID 924 wrote to memory of 5024	924	BBraun PO#4502070446.pdf.exe	88
PID 5024 wrote to memory of 3916	5024	BBraun PO#4502070446.pdf.exe	89
PID 5024 wrote to memory of 3916	5024	BBraun PO#4502070446.pdf.exe	89
PID 5024 wrote to memory of 3916	5024	BBraun PO#4502070446.pdf.exe	89
PID 5024 wrote to memory of 3916	5024	BBraun PO#4502070446.pdf.exe	89

C:\Users\Admin\AppData\Local\Temp\BBraun PO#4502070446.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\BBraun PO#4502070446.pdf.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:924
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\BBraun PO#4502070446.pdf.exe"
  2⤵
  PID:1364
- C:\Users\Admin\AppData\Local\Temp\BBraun PO#4502070446.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\BBraun PO#4502070446.pdf.exe"
  2⤵
  - 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:5024
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\BBraun PO#4502070446.pdf.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3916

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:\Users\Admin\AppData\Local\Temp\Anglophile

Filesize
483KB

MD5
7045a55ce1fb700dc698bbfd975c8c1f

SHA1
df92c996d36fab95639439f4c99b80a18835a866

SHA256
7adf1a7b666495c1c4b1b4d1738cdfba7e45917212797fe857b4b51c61522555

SHA512
fcd112ed94f08020fa724be8854edc7dbe822ae76d243bf20718512bac06bcc5222ac16be790a357ef9a6089074b5479e5434c26fe1d745474eff0d85ceb60d4

Download Submit
C:\Users\Admin\AppData\Local\Temp\nonagglutinant

Filesize
28KB

MD5
9d0d9f07ec5de3e18a8d616c200f9d0a

SHA1
877a45692849235be71d7e11d5d01750fdc48d33

SHA256
97d327c16ee808544ce3f1776782876bd68140cf390a33f601585b7112441053

SHA512
aedf05f53c4ceb8884407b13aadeffb31208d971c81ea29f1679a49299d6d9632b047d29c7ae9a5e65b2893e0ba686b1677c0234a89f3d583e6cf8f50a1af3e1

Download Submit
memory/924-11-0x0000000001600000-0x0000000001604000-memory.dmp

Filesize
16KB

Download
memory/3916-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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