remcos | b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f

General

Target

b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe
Size

964KB
MD5

6138a05e066e20c8e39c760bec68e113
SHA1

04644b6a5ea07a58824ff156b240ca9481806469
SHA256

b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f
SHA512

811381b33c3be3ee817a127c42e3c886802331d7453230658244872c97cddc36aa4c0b7d05e30c9280bfe1f800fedb481575cd0ab502386953af4505a5dd7aaf
SSDEEP

24576:LI++Z/jfG+Nv4GhFASI4tKX2Fjpm87bb:LI++ZLfG+SGhF/tImT

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

103.186.116.220:6565

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-9XV80Z
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 3968 set thread context of 1232	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	98

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	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe
3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3968 wrote to memory of 3108	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	97
PID 3968 wrote to memory of 3108	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	97
PID 3968 wrote to memory of 3108	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	97
PID 3968 wrote to memory of 1232	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	98
PID 3968 wrote to memory of 1232	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	98
PID 3968 wrote to memory of 1232	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	98
PID 3968 wrote to memory of 1232	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	98
PID 3968 wrote to memory of 1232	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	98
PID 3968 wrote to memory of 1232	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	98
PID 3968 wrote to memory of 1232	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	98
PID 3968 wrote to memory of 1232	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	98
PID 3968 wrote to memory of 1232	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	98
PID 3968 wrote to memory of 1232	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	98
PID 3968 wrote to memory of 1232	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	98
PID 3968 wrote to memory of 1232	3968	b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe	98

C:\Users\Admin\AppData\Local\Temp\b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe
"C:\Users\Admin\AppData\Local\Temp\b4463bc49e5f7fdfe610f17163ad8b399dda74e6843c4ea7fccf379c95e06e4f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:3108
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1232

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4452,i,15336851255456239337,16379811035920490645,262144 --variations-seed-version --mojo-platform-channel-handle=4612 /prefetch:8
1⤵
PID:2184

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

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Downloads

memory/1232-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1232-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3968-1-0x0000000000270000-0x0000000000366000-memory.dmp

Filesize
984KB

Download
memory/3968-2-0x0000000005290000-0x0000000005834000-memory.dmp

Filesize
5.6MB

Download
memory/3968-0-0x000000007494E000-0x000000007494F000-memory.dmp

Filesize
4KB

Download
memory/3968-10-0x0000000008F20000-0x0000000008FBC000-memory.dmp

Filesize
624KB

Download
memory/3968-9-0x0000000006850000-0x0000000006910000-memory.dmp

Filesize
768KB

Download
memory/3968-8-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/3968-7-0x000000007494E000-0x000000007494F000-memory.dmp

Filesize
4KB

Download
memory/3968-6-0x00000000063B0000-0x00000000063C0000-memory.dmp

Filesize
64KB

Download
memory/3968-5-0x0000000004D50000-0x0000000004D5A000-memory.dmp

Filesize
40KB

Download
memory/3968-4-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/3968-3-0x0000000004D80000-0x0000000004E12000-memory.dmp

Filesize
584KB

Download
memory/3968-16-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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