remcos | b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250207-en
resource tags

arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
submitted
15/02/2025, 04:09

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General

Target

b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe
Size

1.0MB
MD5

ec5a7a616e71dd9eaa5453a172a2c952
SHA1

77c2abbfee86dc74dab6b7a13e7d0e3cd1589dec
SHA256

b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775
SHA512

7192ba6bc1353ad5ec5c1b6a19b7e7402cb36fc11e377fd23859c24a9ee28a6767138a726d630b5d201f4dc202a6d02cb1e18845115d7e83eae7808977e3fb9a
SSDEEP

24576:k+wIZTEg2BKLobjEmOTWcN0QCgqYmt9yX8THRr1OBQeb:k+wIZTPBkEWeCgZmt3p1OBzb

Score

10^/10

remcos feb 09 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

FEB 09

oktoviyanto.ddns.net:9373

103.186.117.61:9373

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-Z2L02T
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
Remcos family
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
740	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
66	1432	Process not Found

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-1-5-21-3311063739-2594902809-44604183-1000\Control Panel\International\Geo\Nation	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2276 set thread context of 2092	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	104

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 5 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	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.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	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3376	MicrosoftEdgeUpdate.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
3320	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe
740	powershell.exe
740	powershell.exe
2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe
Token: SeDebugPrivilege	740	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2092	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 740	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	100
PID 2276 wrote to memory of 740	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	100
PID 2276 wrote to memory of 740	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	100
PID 2276 wrote to memory of 3320	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	102
PID 2276 wrote to memory of 3320	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	102
PID 2276 wrote to memory of 3320	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	102
PID 2276 wrote to memory of 2092	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	104
PID 2276 wrote to memory of 2092	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	104
PID 2276 wrote to memory of 2092	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	104
PID 2276 wrote to memory of 2092	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	104
PID 2276 wrote to memory of 2092	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	104
PID 2276 wrote to memory of 2092	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	104
PID 2276 wrote to memory of 2092	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	104
PID 2276 wrote to memory of 2092	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	104
PID 2276 wrote to memory of 2092	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	104
PID 2276 wrote to memory of 2092	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	104
PID 2276 wrote to memory of 2092	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	104
PID 2276 wrote to memory of 2092	2276	b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe	104

C:\Users\Admin\AppData\Local\Temp\b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe
"C:\Users\Admin\AppData\Local\Temp\b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2276
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\libpROjsBrZfd.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:740
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\libpROjsBrZfd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC091.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3320
- C:\Users\Admin\AppData\Local\Temp\b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe
  "C:\Users\Admin\AppData\Local\Temp\b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2092

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI3IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU5ODUiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODQ0NDQzNjAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MTcwOTE3ODk5Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:3376

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

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
522e616add547e0448faccc9bc557af1

SHA1
a84d7f004d0e4b67e3f7673e17b631cd6ba94655

SHA256
1f42da571c6bedfdd026a2c9ac5b7c5596b1bec3f87c259a6b12b274d2a44ad1

SHA512
c82891ccc108c1619d9770feaab7e1f81d6aa37519cec11b0f7774e36eee6a42ecce8c5bb8b395c315cde4498487349b43732d8cf0ffe21d2d5f0891fabe7582

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3zcxlzy0.zax.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC091.tmp

Filesize
1KB

MD5
3a31b28a06614ed005e4559312f20bea

SHA1
101eb9d31224c9628e867c4a118a21d22c6f1cfd

SHA256
6c76600c42a9379b5859390f7ae4740fb53f959247682e45d8ed1b00902579dd

SHA512
85f0ccac384a72d68129ad1bb8bff8749420e16530d5bbf744554443b1de4f5eb79e5a942e055b99bbdb7a7ddfe8034ea5e18021a0c620097b5969950799ba43

Download Submit
memory/740-66-0x0000000006FC0000-0x0000000006FD4000-memory.dmp

Filesize
80KB

Download
memory/740-68-0x00000000070A0000-0x00000000070A8000-memory.dmp

Filesize
32KB

Download
memory/740-71-0x0000000073B30000-0x00000000742E0000-memory.dmp

Filesize
7.7MB

Download
memory/740-67-0x00000000070C0000-0x00000000070DA000-memory.dmp

Filesize
104KB

Download
memory/740-65-0x0000000006FB0000-0x0000000006FBE000-memory.dmp

Filesize
56KB

Download
memory/740-64-0x0000000006F80000-0x0000000006F91000-memory.dmp

Filesize
68KB

Download
memory/740-63-0x0000000007000000-0x0000000007096000-memory.dmp

Filesize
600KB

Download
memory/740-62-0x0000000006DF0000-0x0000000006DFA000-memory.dmp

Filesize
40KB

Download
memory/740-15-0x0000000002180000-0x00000000021B6000-memory.dmp

Filesize
216KB

Download
memory/740-16-0x0000000073B30000-0x00000000742E0000-memory.dmp

Filesize
7.7MB

Download
memory/740-17-0x0000000004BD0000-0x00000000051F8000-memory.dmp

Filesize
6.2MB

Download
memory/740-18-0x0000000073B30000-0x00000000742E0000-memory.dmp

Filesize
7.7MB

Download
memory/740-19-0x0000000073B30000-0x00000000742E0000-memory.dmp

Filesize
7.7MB

Download
memory/740-60-0x00000000073D0000-0x0000000007A4A000-memory.dmp

Filesize
6.5MB

Download
memory/740-22-0x0000000005270000-0x00000000052D6000-memory.dmp

Filesize
408KB

Download
memory/740-23-0x00000000053E0000-0x0000000005446000-memory.dmp

Filesize
408KB

Download
memory/740-21-0x0000000004A80000-0x0000000004AA2000-memory.dmp

Filesize
136KB

Download
memory/740-61-0x0000000006D80000-0x0000000006D9A000-memory.dmp

Filesize
104KB

Download
memory/740-29-0x0000000005450000-0x00000000057A4000-memory.dmp

Filesize
3.3MB

Download
memory/740-34-0x0000000005A60000-0x0000000005A7E000-memory.dmp

Filesize
120KB

Download
memory/740-35-0x0000000005AF0000-0x0000000005B3C000-memory.dmp

Filesize
304KB

Download
memory/740-59-0x00000000060A0000-0x0000000006143000-memory.dmp

Filesize
652KB

Download
memory/740-58-0x0000000006070000-0x000000000608E000-memory.dmp

Filesize
120KB

Download
memory/740-47-0x0000000006030000-0x0000000006062000-memory.dmp

Filesize
200KB

Download
memory/740-48-0x000000006F1E0000-0x000000006F22C000-memory.dmp

Filesize
304KB

Download
memory/2092-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-85-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-111-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-110-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-94-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-95-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-86-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-0-0x0000000073B3E000-0x0000000073B3F000-memory.dmp

Filesize
4KB

Download
memory/2276-5-0x0000000073B30000-0x00000000742E0000-memory.dmp

Filesize
7.7MB

Download
memory/2276-7-0x0000000073B3E000-0x0000000073B3F000-memory.dmp

Filesize
4KB

Download
memory/2276-1-0x00000000004C0000-0x00000000005C8000-memory.dmp

Filesize
1.0MB

Download
memory/2276-46-0x0000000073B30000-0x00000000742E0000-memory.dmp

Filesize
7.7MB

Download
memory/2276-4-0x0000000005150000-0x000000000515A000-memory.dmp

Filesize
40KB

Download
memory/2276-8-0x0000000073B30000-0x00000000742E0000-memory.dmp

Filesize
7.7MB

Download
memory/2276-9-0x0000000006370000-0x0000000006430000-memory.dmp

Filesize
768KB

Download
memory/2276-10-0x000000000AEE0000-0x000000000AF7C000-memory.dmp

Filesize
624KB

Download
memory/2276-3-0x0000000004F90000-0x0000000005022000-memory.dmp

Filesize
584KB

Download
memory/2276-2-0x0000000005440000-0x00000000059E4000-memory.dmp

Filesize
5.6MB

Download
memory/2276-6-0x0000000006600000-0x000000000661E000-memory.dmp

Filesize
120KB

Download