remcos | 31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752

Analysis

max time kernel
148s
max time network
143s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16-09-2024 10:02

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General

Target

31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe
Size

908KB
MD5

2fdf82bc3f069832d3599399c1387e07
SHA1

189ba992552eca7c89f430d084b3b29d3a4b18b8
SHA256

31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752
SHA512

1a80c9bd3837c2f565f243d7f0bb8395642013887c1710555f3f1cdb06fea846b92871beb4e3473cdb55e0912ae76301bfef2bf5f1384cac4d02df95276f0e10
SSDEEP

24576:qOGdumZu8lNib6eFUhmekfhv74ROOY3xxXBN2:qduh23eFUhm9j4EOIXv

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
2856	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2968 set thread context of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36

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	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.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	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.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
2948	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe
2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe
2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe
2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe
2856	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe
Token: SeDebugPrivilege	2856	powershell.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2968 wrote to memory of 2856	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	30
PID 2968 wrote to memory of 2856	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	30
PID 2968 wrote to memory of 2856	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	30
PID 2968 wrote to memory of 2856	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	30
PID 2968 wrote to memory of 2948	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	32
PID 2968 wrote to memory of 2948	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	32
PID 2968 wrote to memory of 2948	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	32
PID 2968 wrote to memory of 2948	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	32
PID 2968 wrote to memory of 2624	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	34
PID 2968 wrote to memory of 2624	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	34
PID 2968 wrote to memory of 2624	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	34
PID 2968 wrote to memory of 2624	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	34
PID 2968 wrote to memory of 1884	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	35
PID 2968 wrote to memory of 1884	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	35
PID 2968 wrote to memory of 1884	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	35
PID 2968 wrote to memory of 1884	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	35
PID 2968 wrote to memory of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36
PID 2968 wrote to memory of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36
PID 2968 wrote to memory of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36
PID 2968 wrote to memory of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36
PID 2968 wrote to memory of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36
PID 2968 wrote to memory of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36
PID 2968 wrote to memory of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36
PID 2968 wrote to memory of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36
PID 2968 wrote to memory of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36
PID 2968 wrote to memory of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36
PID 2968 wrote to memory of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36
PID 2968 wrote to memory of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36
PID 2968 wrote to memory of 2572	2968	31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe	36

C:\Users\Admin\AppData\Local\Temp\31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe
"C:\Users\Admin\AppData\Local\Temp\31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2968
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OXwtFifCEW.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2856
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OXwtFifCEW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp30D0.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2948
- C:\Users\Admin\AppData\Local\Temp\31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe
  "C:\Users\Admin\AppData\Local\Temp\31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe"
  2⤵
  PID:2624
- C:\Users\Admin\AppData\Local\Temp\31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe
  "C:\Users\Admin\AppData\Local\Temp\31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe"
  2⤵
  PID:1884
- C:\Users\Admin\AppData\Local\Temp\31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe
  "C:\Users\Admin\AppData\Local\Temp\31febdf316e73eaa38c90143a5cd2351cdc4f4921ada4f6b053e5f9c2fa3d752.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2572

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp30D0.tmp

Filesize
1KB

MD5
045ceb378804228b42838afc434b5add

SHA1
070956b8a4d518e576c384612a20e6864370bce4

SHA256
e5d33bae4a2671901234249b06b5cb340144a5477163527906f1e3216b7c1804

SHA512
edccab27e98069d4564b5432b55432e9e4daedfa3a0c721a361ff090b2eeaeee6efe95ad8eaf9f54c1722cfa30bd85f11729d9a1f165d6bb5770ac6e4c131e52

Download Submit
memory/2572-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2572-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2968-2-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/2968-4-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/2968-0-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/2968-31-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/2968-1-0x0000000000270000-0x0000000000356000-memory.dmp

Filesize
920KB

Download
memory/2968-6-0x0000000005AB0000-0x0000000005B6E000-memory.dmp

Filesize
760KB

Download
memory/2968-5-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/2968-3-0x0000000000380000-0x0000000000398000-memory.dmp

Filesize
96KB

Download