remcos | d7b82542403c06b63adcd6c4a46614ebc04d903c9c404097d30cc85e0237c2bc

General

Target

PO904321.exe
Size

881KB
MD5

a1b7c41a0ef9eb2af3337a97127329d9
SHA1

c94ffbdc29ab82e90b704e33838a1ea6af3cf14a
SHA256

d7b82542403c06b63adcd6c4a46614ebc04d903c9c404097d30cc85e0237c2bc
SHA512

4cd922ffff1940fdea5350b98a54954970f200c3a5c23c2117f8cbcf48bf389c170506b9760b949357d378734e60634512a2801f9a37512f7cf6f12a97147e1e
SSDEEP

24576:5rEmwPVpOaOXAHs2NAZZHy0SUAP2F/cvn:SZtpxOl2NAZ5fD/

Score

10^/10

remcos mekus discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

mekus

C2

dpm-sael.com:2017

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
meckus-ODY51K
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
2668	powershell.exe
2952	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 468 set thread context of 2568	468	PO904321.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 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO904321.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO904321.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
2776	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2668	powershell.exe
2952	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2668	powershell.exe
Token: SeDebugPrivilege	2952	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2568	PO904321.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 468 wrote to memory of 2668	468	PO904321.exe	30
PID 468 wrote to memory of 2668	468	PO904321.exe	30
PID 468 wrote to memory of 2668	468	PO904321.exe	30
PID 468 wrote to memory of 2668	468	PO904321.exe	30
PID 468 wrote to memory of 2952	468	PO904321.exe	32
PID 468 wrote to memory of 2952	468	PO904321.exe	32
PID 468 wrote to memory of 2952	468	PO904321.exe	32
PID 468 wrote to memory of 2952	468	PO904321.exe	32
PID 468 wrote to memory of 2776	468	PO904321.exe	34
PID 468 wrote to memory of 2776	468	PO904321.exe	34
PID 468 wrote to memory of 2776	468	PO904321.exe	34
PID 468 wrote to memory of 2776	468	PO904321.exe	34
PID 468 wrote to memory of 2568	468	PO904321.exe	36
PID 468 wrote to memory of 2568	468	PO904321.exe	36
PID 468 wrote to memory of 2568	468	PO904321.exe	36
PID 468 wrote to memory of 2568	468	PO904321.exe	36
PID 468 wrote to memory of 2568	468	PO904321.exe	36
PID 468 wrote to memory of 2568	468	PO904321.exe	36
PID 468 wrote to memory of 2568	468	PO904321.exe	36
PID 468 wrote to memory of 2568	468	PO904321.exe	36
PID 468 wrote to memory of 2568	468	PO904321.exe	36
PID 468 wrote to memory of 2568	468	PO904321.exe	36
PID 468 wrote to memory of 2568	468	PO904321.exe	36
PID 468 wrote to memory of 2568	468	PO904321.exe	36
PID 468 wrote to memory of 2568	468	PO904321.exe	36

C:\Users\Admin\AppData\Local\Temp\PO904321.exe
"C:\Users\Admin\AppData\Local\Temp\PO904321.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:468
- 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\PO904321.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2668
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rxoPEmTYk.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2952
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rxoPEmTYk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBA0C.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2776
- C:\Users\Admin\AppData\Local\Temp\PO904321.exe
  "C:\Users\Admin\AppData\Local\Temp\PO904321.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2568

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
57775968ec5d79648a9172667c20c904

SHA1
9a80a3aca4087a0f1be406a82f2d7a8150e6daf0

SHA256
d854d05768047693e6407e4546cfc1881bdd71f1eae3b5da6c7ac0094c520299

SHA512
517c614159a57c01210f0a553c880e9ddb3f86d5b9b389c728048c05cf2da860d72ed58af17321acec40110fb143d9586fed609659dd58519c632026a729c836

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBA0C.tmp

Filesize
1KB

MD5
ff0788e4a1c8845be1645d2e638a10f9

SHA1
bc4327fd7840472ba0fb1c13434ef3d9b669644a

SHA256
2cea015d233d0f48f62d29acd0b6d220acaebffce08752d530096f5e4bdc4828

SHA512
d8cb14abd75057dc5763bc295f575ad61baec019f45511cd39900b035c914ba71cc5c1b9543c1d69906f68339660c6f32f99933c5a99a23b2d6efb29aeba78ef

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\ITCH6ZVKNVOKB8NJDG74.temp

Filesize
7KB

MD5
e5e8e98f216dc8108ded65e2724292f3

SHA1
7aaab3075ec67d7a006f325ac7473f1db86c38a1

SHA256
a0d0acadc96b9b3b6ebbf8189a915196d587fed452583e509f59ab5c929e02e6

SHA512
28ce3f816d8dfea90f04aa6cecde9ece482b1ce2aca05cae1895e54f0d8262e7c52dbe483bb812d25f6af1fd1c3b781765f73e7952b8d230f60ca0448081d397

Download Submit
memory/468-0-0x00000000749BE000-0x00000000749BF000-memory.dmp

Filesize
4KB

Download
memory/468-1-0x0000000000910000-0x00000000009F2000-memory.dmp

Filesize
904KB

Download
memory/468-2-0x00000000749B0000-0x000000007509E000-memory.dmp

Filesize
6.9MB

Download
memory/468-3-0x0000000000490000-0x00000000004A0000-memory.dmp

Filesize
64KB

Download
memory/468-4-0x00000000749BE000-0x00000000749BF000-memory.dmp

Filesize
4KB

Download
memory/468-5-0x00000000749B0000-0x000000007509E000-memory.dmp

Filesize
6.9MB

Download
memory/468-6-0x0000000005030000-0x00000000050F0000-memory.dmp

Filesize
768KB

Download
memory/468-39-0x00000000749B0000-0x000000007509E000-memory.dmp

Filesize
6.9MB

Download
memory/2568-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2568-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2568-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads