remcos | c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4

Analysis

max time kernel
148s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28-11-2024 17:32

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General

Target

c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe
Size

1.1MB
MD5

b020367cee5bec0b6ac99f0b6bbfdade
SHA1

5bd27e290058d092b7d97571c4047d8b4952b8ca
SHA256

c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4
SHA512

01b91cf3eb2bc10b6e5d7b47a99704f5c5bd8dcab92c8e7109b54b58f8e613b38c99bad124a1a58497aa049436cf842779bc7cf349ee7d34b3bb9bfd94b88465
SSDEEP

12288:GL13yaZWVlyj7WLVgy/GnUSeDCAuctlZufGEG9Wlfeg96T8Omqivd9ecnnIv17Ly:GL13JSo3Q7/zKcNiGEG9W0/sqcnS7O

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

41.216.183.238:7112

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-Y7J88P
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 2 IoCs

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

execution

PowerShell

T1059.001

Processes:

powershell.exepowershell.exe

pid	Process
3572	powershell.exe
1720	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

Processes:

c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe

description	pid	Process	procid_target
PID 3896 set thread context of 1736	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	95

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

Processes:

c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exec6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exepowershell.exepowershell.exeschtasks.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.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

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

Processes:

schtasks.exe

pid	Process
3584	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exepowershell.exepowershell.exe

pid	Process
3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe
3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe
3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe
3572	powershell.exe
1720	powershell.exe
3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe
3572	powershell.exe
1720	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exepowershell.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe
Token: SeDebugPrivilege	3572	powershell.exe
Token: SeDebugPrivilege	1720	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe

description	pid	Process	procid_target
PID 3896 wrote to memory of 3572	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	89
PID 3896 wrote to memory of 3572	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	89
PID 3896 wrote to memory of 3572	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	89
PID 3896 wrote to memory of 1720	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	91
PID 3896 wrote to memory of 1720	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	91
PID 3896 wrote to memory of 1720	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	91
PID 3896 wrote to memory of 3584	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	93
PID 3896 wrote to memory of 3584	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	93
PID 3896 wrote to memory of 3584	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	93
PID 3896 wrote to memory of 1736	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	95
PID 3896 wrote to memory of 1736	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	95
PID 3896 wrote to memory of 1736	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	95
PID 3896 wrote to memory of 1736	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	95
PID 3896 wrote to memory of 1736	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	95
PID 3896 wrote to memory of 1736	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	95
PID 3896 wrote to memory of 1736	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	95
PID 3896 wrote to memory of 1736	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	95
PID 3896 wrote to memory of 1736	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	95
PID 3896 wrote to memory of 1736	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	95
PID 3896 wrote to memory of 1736	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	95
PID 3896 wrote to memory of 1736	3896	c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe	95

C:\Users\Admin\AppData\Local\Temp\c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe
"C:\Users\Admin\AppData\Local\Temp\c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.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:3896
- 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\c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3572
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YBCZARqbWZsvUc.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1720
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YBCZARqbWZsvUc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC62E.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3584
- C:\Users\Admin\AppData\Local\Temp\c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe
  "C:\Users\Admin\AppData\Local\Temp\c6c21a9e00bd6cb9fd555ae4f413f47fb311f62e1229db1614ea4b2271fe7df4.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1736

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\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
7336a8450a28843e32b174cfef796479

SHA1
f10af3aa2504b894699dd52b21400daca4037e44

SHA256
c03bc337e9aac5a1dab16949ed772b75960ddabf39bd2ebeafd3d8f73285792f

SHA512
d7dba3f9b52a8e405656550f73437c4993eeba4d28cb94589480624128905ff0b86de72e4bdc58a56b01e954ed109e2efda6f3aa80b1e291898700825c702620

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dyylgmmc.a30.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC62E.tmp

Filesize
1KB

MD5
fd56c1d42c03fba419974a608308f398

SHA1
e49528fdd8676f83fe28be737bb1c8c7d33527e6

SHA256
d61a200c8ed6c1544ce61f2efefbbeefc1c8c16eed94718c6a744be6987225ab

SHA512
72891e7e3deed2f5fd8cfba295423df64c41765123539c85071bab876ef8060b65343b0e2dfd71f4721347078f02b2e3db431ec429d146f29ad241889cc55018

Download Submit
memory/1720-36-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/1720-20-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/1720-57-0x0000000006D00000-0x0000000006D32000-memory.dmp

Filesize
200KB

Download
memory/1720-58-0x0000000075C20000-0x0000000075C6C000-memory.dmp

Filesize
304KB

Download
memory/1720-78-0x0000000006F50000-0x0000000006FF3000-memory.dmp

Filesize
652KB

Download
memory/1720-30-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/1720-96-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/1720-68-0x0000000006CE0000-0x0000000006CFE000-memory.dmp

Filesize
120KB

Download
memory/1720-89-0x00000000073F0000-0x000000000740A000-memory.dmp

Filesize
104KB

Download
memory/1720-88-0x00000000072F0000-0x0000000007304000-memory.dmp

Filesize
80KB

Download
memory/1720-87-0x00000000072E0000-0x00000000072EE000-memory.dmp

Filesize
56KB

Download
memory/1720-80-0x00000000076F0000-0x0000000007D6A000-memory.dmp

Filesize
6.5MB

Download
memory/1736-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-98-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-104-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-83-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-99-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-101-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-105-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-100-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1736-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3572-53-0x00000000068E0000-0x000000000692C000-memory.dmp

Filesize
304KB

Download
memory/3572-16-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/3572-52-0x0000000006390000-0x00000000063AE000-memory.dmp

Filesize
120KB

Download
memory/3572-97-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/3572-35-0x0000000005DB0000-0x0000000006104000-memory.dmp

Filesize
3.3MB

Download
memory/3572-69-0x0000000075C20000-0x0000000075C6C000-memory.dmp

Filesize
304KB

Download
memory/3572-26-0x0000000005D40000-0x0000000005DA6000-memory.dmp

Filesize
408KB

Download
memory/3572-24-0x0000000005CD0000-0x0000000005D36000-memory.dmp

Filesize
408KB

Download
memory/3572-81-0x00000000076D0000-0x00000000076EA000-memory.dmp

Filesize
104KB

Download
memory/3572-22-0x00000000053D0000-0x00000000053F2000-memory.dmp

Filesize
136KB

Download
memory/3572-84-0x0000000007740000-0x000000000774A000-memory.dmp

Filesize
40KB

Download
memory/3572-19-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/3572-85-0x0000000007950000-0x00000000079E6000-memory.dmp

Filesize
600KB

Download
memory/3572-86-0x00000000078D0000-0x00000000078E1000-memory.dmp

Filesize
68KB

Download
memory/3572-18-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/3572-15-0x0000000002AB0000-0x0000000002AE6000-memory.dmp

Filesize
216KB

Download
memory/3572-17-0x0000000005470000-0x0000000005A98000-memory.dmp

Filesize
6.2MB

Download
memory/3572-90-0x00000000079F0000-0x00000000079F8000-memory.dmp

Filesize
32KB

Download
memory/3896-0-0x000000007537E000-0x000000007537F000-memory.dmp

Filesize
4KB

Download
memory/3896-51-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/3896-10-0x000000000A060000-0x000000000A0FC000-memory.dmp

Filesize
624KB

Download
memory/3896-9-0x0000000007940000-0x0000000007A00000-memory.dmp

Filesize
768KB

Download
memory/3896-8-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/3896-7-0x000000007537E000-0x000000007537F000-memory.dmp

Filesize
4KB

Download
memory/3896-6-0x0000000004E10000-0x0000000004E2C000-memory.dmp

Filesize
112KB

Download
memory/3896-5-0x0000000004BA0000-0x0000000004BAA000-memory.dmp

Filesize
40KB

Download
memory/3896-4-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/3896-3-0x0000000004BB0000-0x0000000004C42000-memory.dmp

Filesize
584KB

Download
memory/3896-2-0x0000000005080000-0x0000000005624000-memory.dmp

Filesize
5.6MB

Download
memory/3896-1-0x00000000001C0000-0x00000000002DC000-memory.dmp

Filesize
1.1MB

Download