remcos | 4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b

Analysis

max time kernel
149s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-09-2024 01:18

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General

Target

4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe
Size

938KB
MD5

041848dfe86c9d7e4f84a3b4bf065075
SHA1

33ae188d83c9bdcfc1e7c37604011161564d1ad3
SHA256

4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b
SHA512

723086e68480c295cbdd57aeda44785f83cca40ef43a166a427135d3b7969fdbfc184a975a4da20b6bc66833f168477b13a50306f66ac5dcdbe95998514f6648
SSDEEP

24576:OiwEHfhzre4gZVF4tspROMsDInpvmMB/pAzDbY:/7SF4toYFqUDU

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

127.0.0.1:59321

nnamoo.duckdns.org:59321

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-41EVS0
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 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2728	powershell.exe
2628	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1928 set thread context of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38

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	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.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	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.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
2692	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe
1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe
1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe
2728	powershell.exe
2628	powershell.exe
1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe
Token: SeDebugPrivilege	2728	powershell.exe
Token: SeDebugPrivilege	2628	powershell.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 2628	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	31
PID 1928 wrote to memory of 2628	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	31
PID 1928 wrote to memory of 2628	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	31
PID 1928 wrote to memory of 2628	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	31
PID 1928 wrote to memory of 2728	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	33
PID 1928 wrote to memory of 2728	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	33
PID 1928 wrote to memory of 2728	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	33
PID 1928 wrote to memory of 2728	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	33
PID 1928 wrote to memory of 2692	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	35
PID 1928 wrote to memory of 2692	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	35
PID 1928 wrote to memory of 2692	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	35
PID 1928 wrote to memory of 2692	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	35
PID 1928 wrote to memory of 2648	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	37
PID 1928 wrote to memory of 2648	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	37
PID 1928 wrote to memory of 2648	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	37
PID 1928 wrote to memory of 2648	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	37
PID 1928 wrote to memory of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38
PID 1928 wrote to memory of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38
PID 1928 wrote to memory of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38
PID 1928 wrote to memory of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38
PID 1928 wrote to memory of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38
PID 1928 wrote to memory of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38
PID 1928 wrote to memory of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38
PID 1928 wrote to memory of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38
PID 1928 wrote to memory of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38
PID 1928 wrote to memory of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38
PID 1928 wrote to memory of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38
PID 1928 wrote to memory of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38
PID 1928 wrote to memory of 2592	1928	4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe	38

C:\Users\Admin\AppData\Local\Temp\4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe
"C:\Users\Admin\AppData\Local\Temp\4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1928
- 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\4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2628
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rxEKvCaIrm.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2728
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rxEKvCaIrm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1786.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2692
- C:\Users\Admin\AppData\Local\Temp\4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe
  "C:\Users\Admin\AppData\Local\Temp\4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe"
  2⤵
  PID:2648
- C:\Users\Admin\AppData\Local\Temp\4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe
  "C:\Users\Admin\AppData\Local\Temp\4304f60f1efdc44fb82e632d7d6a15a62c8583aab914da08ec73b8bc709a209b.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2592

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

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\tmp1786.tmp

Filesize
1KB

MD5
23b8906aa61bccb1993e00452738fb86

SHA1
64fcbc1ad1071451fd00c1c12a58117f1073e33f

SHA256
bad09ca0e0c2c9e5800eaf88fb26171cc0ec5898b9d6b40e9ca0a5b676f35d85

SHA512
061995205c1ed425b95e5ad34074363900f92bff143740977edf0f8d86909e1d2201ada45989426920c11f1c9b0b52c6538047340c4585fd4da7fb3134c22a1a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
baf610ab69662649f885f967adb68bb1

SHA1
5a8056581b6d344a472250eae87dfd458c156923

SHA256
065c2f7ed77039ad913a3eefe844a79895f21f4fb02735f0c72329121e5ab1bb

SHA512
c0fb32c16e5dd6a34423f5d1efa5e72f6aab7a68b6690d45f0c91970480e7afe3153f3a651cbf1d8f2b32d5e8e017b04807753f3710913091f66814c415a8d6f

Download Submit
memory/1928-0-0x000000007467E000-0x000000007467F000-memory.dmp

Filesize
4KB

Download
memory/1928-1-0x0000000000850000-0x0000000000940000-memory.dmp

Filesize
960KB

Download
memory/1928-2-0x0000000074670000-0x0000000074D5E000-memory.dmp

Filesize
6.9MB

Download
memory/1928-3-0x0000000000300000-0x0000000000310000-memory.dmp

Filesize
64KB

Download
memory/1928-4-0x000000007467E000-0x000000007467F000-memory.dmp

Filesize
4KB

Download
memory/1928-5-0x0000000074670000-0x0000000074D5E000-memory.dmp

Filesize
6.9MB

Download
memory/1928-6-0x0000000004F90000-0x000000000504E000-memory.dmp

Filesize
760KB

Download
memory/1928-40-0x0000000074670000-0x0000000074D5E000-memory.dmp

Filesize
6.9MB

Download
memory/2592-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2592-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2592-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download