remcos | c35175c4ba2c6e56210556138234399fd8ec5dce080040cb2b6018e2c5ba79d0

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
17/09/2024, 14:48

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General

Target

AWB 41174448411.exe
Size

879KB
MD5

b7f666dbb31c5ae7316d4a7a32fab0a8
SHA1

f310928142cb104fb6133d0130270a8b35062591
SHA256

0ea27f62b56bef4fe42893c728fefb4ec62cf7c1f56f40331697cb6ec0e1a60b
SHA512

9bed657f901268e54fb4b36fcc15c27d64be532c47b7771f72baeb443071547615d2733400d804c7b66a6cb5889217033dbb8b7dc33ed0e30a5199edb78073a0
SSDEEP

24576:ePJ3lwMzXGxCh9ZOBsi6CudnMZHbrC5zDY7zkU8Xnh:A99GYTOBcMZP8DRvX

Score

10^/10

remcos 3456789 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

3456789

172.93.220.148:45682

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
765-8M14I5
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
228	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	AWB 41174448411.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4536 set thread context of 1872	4536	AWB 41174448411.exe	92

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	AWB 41174448411.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AWB 41174448411.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4212	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
228	powershell.exe
228	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	228	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4536 wrote to memory of 228	4536	AWB 41174448411.exe	88
PID 4536 wrote to memory of 228	4536	AWB 41174448411.exe	88
PID 4536 wrote to memory of 228	4536	AWB 41174448411.exe	88
PID 4536 wrote to memory of 4212	4536	AWB 41174448411.exe	90
PID 4536 wrote to memory of 4212	4536	AWB 41174448411.exe	90
PID 4536 wrote to memory of 4212	4536	AWB 41174448411.exe	90
PID 4536 wrote to memory of 1872	4536	AWB 41174448411.exe	92
PID 4536 wrote to memory of 1872	4536	AWB 41174448411.exe	92
PID 4536 wrote to memory of 1872	4536	AWB 41174448411.exe	92
PID 4536 wrote to memory of 1872	4536	AWB 41174448411.exe	92
PID 4536 wrote to memory of 1872	4536	AWB 41174448411.exe	92
PID 4536 wrote to memory of 1872	4536	AWB 41174448411.exe	92
PID 4536 wrote to memory of 1872	4536	AWB 41174448411.exe	92
PID 4536 wrote to memory of 1872	4536	AWB 41174448411.exe	92
PID 4536 wrote to memory of 1872	4536	AWB 41174448411.exe	92
PID 4536 wrote to memory of 1872	4536	AWB 41174448411.exe	92
PID 4536 wrote to memory of 1872	4536	AWB 41174448411.exe	92
PID 4536 wrote to memory of 1872	4536	AWB 41174448411.exe	92

C:\Users\Admin\AppData\Local\Temp\AWB 41174448411.exe
"C:\Users\Admin\AppData\Local\Temp\AWB 41174448411.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4536
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SZuXSONpovRq.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:228
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SZuXSONpovRq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF5AA.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4212
- C:\Users\Admin\AppData\Local\Temp\AWB 41174448411.exe
  "C:\Users\Admin\AppData\Local\Temp\AWB 41174448411.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1872

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

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\__PSScriptPolicyTest_x5dwhp13.0qw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF5AA.tmp

Filesize
1KB

MD5
a43e629c702feebf9b20e45ae7733b84

SHA1
eda54a6e2fe3bf3536ef4077725046e2d754fa9f

SHA256
e8b63660d3b4d449bfc9914edb317cab7aa6e56bbd717604468750364047c182

SHA512
370e0a3543d1a98ccc3b0f74a394588a1e12c3dd71f7b0f9d9bdc40f018c1fafaf27bb309d687c7e1705244a1aae4f5326a60d708d1a6d689a6ab5039fb222bd

Download Submit
memory/228-66-0x0000000007A50000-0x0000000007A61000-memory.dmp

Filesize
68KB

Download
memory/228-41-0x00000000060F0000-0x0000000006444000-memory.dmp

Filesize
3.3MB

Download
memory/228-73-0x0000000075250000-0x0000000075A00000-memory.dmp

Filesize
7.7MB

Download
memory/228-70-0x0000000007B70000-0x0000000007B78000-memory.dmp

Filesize
32KB

Download
memory/228-69-0x0000000007B90000-0x0000000007BAA000-memory.dmp

Filesize
104KB

Download
memory/228-68-0x0000000007A90000-0x0000000007AA4000-memory.dmp

Filesize
80KB

Download
memory/228-67-0x0000000007A80000-0x0000000007A8E000-memory.dmp

Filesize
56KB

Download
memory/228-44-0x00000000064A0000-0x00000000064BE000-memory.dmp

Filesize
120KB

Download
memory/228-65-0x0000000007AD0000-0x0000000007B66000-memory.dmp

Filesize
600KB

Download
memory/228-15-0x0000000004FB0000-0x0000000004FE6000-memory.dmp

Filesize
216KB

Download
memory/228-16-0x0000000075250000-0x0000000075A00000-memory.dmp

Filesize
7.7MB

Download
memory/228-19-0x0000000075250000-0x0000000075A00000-memory.dmp

Filesize
7.7MB

Download
memory/228-18-0x0000000005780000-0x0000000005DA8000-memory.dmp

Filesize
6.2MB

Download
memory/228-64-0x00000000078C0000-0x00000000078CA000-memory.dmp

Filesize
40KB

Download
memory/228-20-0x0000000075250000-0x0000000075A00000-memory.dmp

Filesize
7.7MB

Download
memory/228-63-0x0000000007850000-0x000000000786A000-memory.dmp

Filesize
104KB

Download
memory/228-62-0x0000000007E90000-0x000000000850A000-memory.dmp

Filesize
6.5MB

Download
memory/228-61-0x0000000007750000-0x00000000077F3000-memory.dmp

Filesize
652KB

Download
memory/228-60-0x0000000006B50000-0x0000000006B6E000-memory.dmp

Filesize
120KB

Download
memory/228-50-0x0000000071B60000-0x0000000071BAC000-memory.dmp

Filesize
304KB

Download
memory/228-49-0x0000000006AD0000-0x0000000006B02000-memory.dmp

Filesize
200KB

Download
memory/228-29-0x0000000005660000-0x0000000005682000-memory.dmp

Filesize
136KB

Download
memory/228-45-0x00000000065F0000-0x000000000663C000-memory.dmp

Filesize
304KB

Download
memory/228-36-0x0000000005EE0000-0x0000000005F46000-memory.dmp

Filesize
408KB

Download
memory/228-35-0x0000000005700000-0x0000000005766000-memory.dmp

Filesize
408KB

Download
memory/1872-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1872-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4536-28-0x0000000075250000-0x0000000075A00000-memory.dmp

Filesize
7.7MB

Download
memory/4536-4-0x0000000005740000-0x000000000574A000-memory.dmp

Filesize
40KB

Download
memory/4536-5-0x0000000075250000-0x0000000075A00000-memory.dmp

Filesize
7.7MB

Download
memory/4536-6-0x0000000005B40000-0x0000000005B4E000-memory.dmp

Filesize
56KB

Download
memory/4536-7-0x000000007525E000-0x000000007525F000-memory.dmp

Filesize
4KB

Download
memory/4536-8-0x0000000075250000-0x0000000075A00000-memory.dmp

Filesize
7.7MB

Download
memory/4536-0-0x000000007525E000-0x000000007525F000-memory.dmp

Filesize
4KB

Download
memory/4536-10-0x000000000AC60000-0x000000000ACFC000-memory.dmp

Filesize
624KB

Download
memory/4536-2-0x0000000005CD0000-0x0000000006274000-memory.dmp

Filesize
5.6MB

Download
memory/4536-3-0x00000000057C0000-0x0000000005852000-memory.dmp

Filesize
584KB

Download
memory/4536-1-0x0000000000C60000-0x0000000000D42000-memory.dmp

Filesize
904KB

Download
memory/4536-9-0x0000000008500000-0x00000000085BE000-memory.dmp

Filesize
760KB

Download