remcos | 44c60a89bb1a3de59c88bb8cd3e866ebd245d413c22fcbd0bf5d51bb5650d935

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18/08/2024, 12:54

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General

Target

5c482e2f743f26a08c2c635a631f2710N.exe
Size

1.4MB
MD5

5c482e2f743f26a08c2c635a631f2710
SHA1

befba6c4b56b91ed8c4dcda6c2e622f495f1044f
SHA256

44c60a89bb1a3de59c88bb8cd3e866ebd245d413c22fcbd0bf5d51bb5650d935
SHA512

430e7694444de8ea07c64986a6ce285dd5a71449f7c1230bb08850ed2a853cc180d4fc94011ae71d7bc1278c27bf2fe0b676f65261dd4df2c0ebf8363f387957
SSDEEP

24576:ZqDEvCTbMWu7rQYlBQcBiT6rprG8aThFstLk28L2CTpbZmMfKTlZ:ZTvC/MTQYxsWR7aThFstLk28yCdbZmMC

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

23.106.127.123:87

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-WAC4TL
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\undiscernibleness.vbs	undiscernibleness.exe

Executes dropped EXE 1 IoCs

pid	Process
4488	undiscernibleness.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x00090000000233a9-13.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4488 set thread context of 4580	4488	undiscernibleness.exe	88

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	5c482e2f743f26a08c2c635a631f2710N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	undiscernibleness.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4488	undiscernibleness.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
5060	5c482e2f743f26a08c2c635a631f2710N.exe
5060	5c482e2f743f26a08c2c635a631f2710N.exe
4488	undiscernibleness.exe
4488	undiscernibleness.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
5060	5c482e2f743f26a08c2c635a631f2710N.exe
5060	5c482e2f743f26a08c2c635a631f2710N.exe
4488	undiscernibleness.exe
4488	undiscernibleness.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 5060 wrote to memory of 4488	5060	5c482e2f743f26a08c2c635a631f2710N.exe	87
PID 5060 wrote to memory of 4488	5060	5c482e2f743f26a08c2c635a631f2710N.exe	87
PID 5060 wrote to memory of 4488	5060	5c482e2f743f26a08c2c635a631f2710N.exe	87
PID 4488 wrote to memory of 4580	4488	undiscernibleness.exe	88
PID 4488 wrote to memory of 4580	4488	undiscernibleness.exe	88
PID 4488 wrote to memory of 4580	4488	undiscernibleness.exe	88
PID 4488 wrote to memory of 4580	4488	undiscernibleness.exe	88

C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe
"C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:5060
- C:\Users\Admin\AppData\Local\jailkeeper\undiscernibleness.exe
  "C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - 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:4488
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe"
    3⤵
    PID:4580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\pensum

Filesize
192KB

MD5
98a6ddf7b35db5a0ae1559392c44972e

SHA1
eed71d98073847ddd1a0233076cee86cdd3b0899

SHA256
3808b0953ae16e27a90085876bfe11645ca7d8d1cafd51315a46d0504a44d918

SHA512
b9c14c1651c873d09dd713a6724dc190d85f490a7492505ec502d2982a847159df0f6e71948ef8cd924a91381ac66a9458a881571382ae855151b3a8e93363aa

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

Filesize
29KB

MD5
0e61f365fccc5d5731f3cef513e3f527

SHA1
c48fccf78a6b1456c71265eceed35886d5558f79

SHA256
744b5140e3fa446c84eb8b33be90a52a6e4ccea5d859b89e5819ba41367c629f

SHA512
f66caa3a6f51799825d6efbf4eb459fac70e928324429d96c527e1742741adb3eeb9d5ebea82ef61140038f60fabb874e2cd0c35f3edb5fe7093975dc4485922

Download Submit
C:\Users\Admin\AppData\Local\jailkeeper\undiscernibleness.exe

Filesize
1.4MB

MD5
5c482e2f743f26a08c2c635a631f2710

SHA1
befba6c4b56b91ed8c4dcda6c2e622f495f1044f

SHA256
44c60a89bb1a3de59c88bb8cd3e866ebd245d413c22fcbd0bf5d51bb5650d935

SHA512
430e7694444de8ea07c64986a6ce285dd5a71449f7c1230bb08850ed2a853cc180d4fc94011ae71d7bc1278c27bf2fe0b676f65261dd4df2c0ebf8363f387957

Download Submit
memory/4580-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4580-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/5060-11-0x0000000001510000-0x0000000001514000-memory.dmp

Filesize
16KB

Download