remcos | 81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21/08/2024, 01:51

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General

Target

81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe
Size

1023KB
MD5

7b3227d251b8705a239fa50ca8070e9c
SHA1

651a7aeec8cbc13f226377ad187d5fc420b22633
SHA256

81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96
SHA512

c6f77c480860002447ff0c252501afc750255f89fad805c39cd036b3f582ff6a2c5e14a5477d2af5014bec84d315e9e66d51a3d329f0bc3cf1608e4a9f85a141
SSDEEP

24576:XHH6h1OnUfbU8QQgV/1hilQgu4FEYTZJr1nzZV8zBVdoGJb84:38Zoj/Vgu4W0pzf8loi

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

192.3.243.155:7643

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-C9YEJ8
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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
4664	powershell.exe
3928	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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1504 set thread context of 768	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	103

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	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.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
2492	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3928	powershell.exe
3928	powershell.exe
4664	powershell.exe
4664	powershell.exe
3928	powershell.exe
4664	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4664	powershell.exe
Token: SeDebugPrivilege	3928	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
768	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 4664	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	97
PID 1504 wrote to memory of 4664	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	97
PID 1504 wrote to memory of 4664	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	97
PID 1504 wrote to memory of 3928	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	99
PID 1504 wrote to memory of 3928	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	99
PID 1504 wrote to memory of 3928	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	99
PID 1504 wrote to memory of 2492	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	101
PID 1504 wrote to memory of 2492	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	101
PID 1504 wrote to memory of 2492	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	101
PID 1504 wrote to memory of 768	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	103
PID 1504 wrote to memory of 768	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	103
PID 1504 wrote to memory of 768	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	103
PID 1504 wrote to memory of 768	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	103
PID 1504 wrote to memory of 768	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	103
PID 1504 wrote to memory of 768	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	103
PID 1504 wrote to memory of 768	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	103
PID 1504 wrote to memory of 768	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	103
PID 1504 wrote to memory of 768	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	103
PID 1504 wrote to memory of 768	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	103
PID 1504 wrote to memory of 768	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	103
PID 1504 wrote to memory of 768	1504	81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe	103

C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe
"C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4664
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\IpoUfzz.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3928
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IpoUfzz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp126A.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2492
- C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe
  "C:\Users\Admin\AppData\Local\Temp\81ed143389ad903c7669aa1da459fbda5b0d93a157ddddb7ddc1ff8e22b97e96.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:768

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
6dd07eee2fed1110844bcff63e5a3dc1

SHA1
13bb3b3772b8bf1b437641a003255c27d601c812

SHA256
e79a3c5de530fee29522871b21fe8976214a1382244b05d16acd64ceaac340db

SHA512
8ef7167ee19057ca71251de34e4850ea4cd5cbf1245dd84772a1029afd9b64cf953e0a69c30ebe116985e1e63e184b78226f53ef302831836eff41590c5ffac2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
d43b916bc7d2d02f2607f1d5cbb4016d

SHA1
1077b9cf191282f7f7ee8f8db7b587a8d76663e6

SHA256
9d02e2ad552119f22c06cc322a1c6aa54e371b37f4c9f5d6ef4523676087f6b2

SHA512
bc16504821cf38f64a8c666f7143dcf5980d6ffa2cb23297268d8edf5cb7c196ebc7336dd56f2652f12d1c2743d98cea464e11d7104e8a736f773b32fdd3002b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zhm1ug1s.1dq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp126A.tmp

Filesize
1KB

MD5
99fe203f6e8197f46ac31bd5e0ff0578

SHA1
58be617a148096488d52cb7895dc3661b8c6a582

SHA256
fbaa7295b69b51f279e424e640264c9f6a21429ad3ab2b9463988e0630905d36

SHA512
980af15c9946eba747ed906a96b2bcd3595c3760668871fe21adbee2489ee4433c5f36870dc927b94bf00e9f9b6d1ac780039e2bf21c27a4b0e5061e78e51c59

Download Submit
memory/768-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-106-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-107-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-131-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-130-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-123-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-122-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-115-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-114-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/768-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1504-0-0x000000007536E000-0x000000007536F000-memory.dmp

Filesize
4KB

Download
memory/1504-9-0x00000000063E0000-0x00000000063F0000-memory.dmp

Filesize
64KB

Download
memory/1504-1-0x00000000007A0000-0x00000000008A6000-memory.dmp

Filesize
1.0MB

Download
memory/1504-6-0x0000000006910000-0x0000000006922000-memory.dmp

Filesize
72KB

Download
memory/1504-4-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/1504-3-0x0000000005280000-0x0000000005312000-memory.dmp

Filesize
584KB

Download
memory/1504-5-0x0000000005440000-0x000000000544A000-memory.dmp

Filesize
40KB

Download
memory/1504-7-0x000000007536E000-0x000000007536F000-memory.dmp

Filesize
4KB

Download
memory/1504-8-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/1504-55-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/1504-2-0x0000000005A30000-0x0000000005FD4000-memory.dmp

Filesize
5.6MB

Download
memory/1504-11-0x0000000008D40000-0x0000000008DDC000-memory.dmp

Filesize
624KB

Download
memory/1504-10-0x0000000006430000-0x00000000064F0000-memory.dmp

Filesize
768KB

Download
memory/3928-24-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3928-54-0x00000000064A0000-0x00000000064BE000-memory.dmp

Filesize
120KB

Download
memory/3928-56-0x00000000064C0000-0x000000000650C000-memory.dmp

Filesize
304KB

Download
memory/3928-45-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3928-73-0x0000000007420000-0x000000000743E000-memory.dmp

Filesize
120KB

Download
memory/3928-63-0x000000006FD90000-0x000000006FDDC000-memory.dmp

Filesize
304KB

Download
memory/3928-62-0x0000000007440000-0x0000000007472000-memory.dmp

Filesize
200KB

Download
memory/3928-86-0x00000000077C0000-0x00000000077DA000-memory.dmp

Filesize
104KB

Download
memory/3928-85-0x0000000007E00000-0x000000000847A000-memory.dmp

Filesize
6.5MB

Download
memory/3928-87-0x0000000007830000-0x000000000783A000-memory.dmp

Filesize
40KB

Download
memory/3928-101-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3928-20-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/3928-90-0x00000000079F0000-0x00000000079FE000-memory.dmp

Filesize
56KB

Download
memory/4664-23-0x00000000058E0000-0x0000000005946000-memory.dmp

Filesize
408KB

Download
memory/4664-92-0x0000000007790000-0x00000000077AA000-memory.dmp

Filesize
104KB

Download
memory/4664-93-0x0000000007770000-0x0000000007778000-memory.dmp

Filesize
32KB

Download
memory/4664-91-0x0000000007690000-0x00000000076A4000-memory.dmp

Filesize
80KB

Download
memory/4664-89-0x0000000007650000-0x0000000007661000-memory.dmp

Filesize
68KB

Download
memory/4664-88-0x00000000076D0000-0x0000000007766000-memory.dmp

Filesize
600KB

Download
memory/4664-100-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4664-84-0x0000000007320000-0x00000000073C3000-memory.dmp

Filesize
652KB

Download
memory/4664-74-0x000000006FD90000-0x000000006FDDC000-memory.dmp

Filesize
304KB

Download
memory/4664-30-0x00000000059D0000-0x0000000005D24000-memory.dmp

Filesize
3.3MB

Download
memory/4664-21-0x0000000005160000-0x0000000005182000-memory.dmp

Filesize
136KB

Download
memory/4664-22-0x0000000005870000-0x00000000058D6000-memory.dmp

Filesize
408KB

Download
memory/4664-19-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4664-18-0x0000000005240000-0x0000000005868000-memory.dmp

Filesize
6.2MB

Download
memory/4664-17-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4664-16-0x0000000004B50000-0x0000000004B86000-memory.dmp

Filesize
216KB

Download