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
2572	powershell.exe
2852	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2528 set thread context of 2664	2528	PO904321.exe	37

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	PO904321.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO904321.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

pid	Process
764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2852	powershell.exe
2572	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2852	powershell.exe
Token: SeDebugPrivilege	2572	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2664	PO904321.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 2572	2528	PO904321.exe	31
PID 2528 wrote to memory of 2572	2528	PO904321.exe	31
PID 2528 wrote to memory of 2572	2528	PO904321.exe	31
PID 2528 wrote to memory of 2572	2528	PO904321.exe	31
PID 2528 wrote to memory of 2852	2528	PO904321.exe	33
PID 2528 wrote to memory of 2852	2528	PO904321.exe	33
PID 2528 wrote to memory of 2852	2528	PO904321.exe	33
PID 2528 wrote to memory of 2852	2528	PO904321.exe	33
PID 2528 wrote to memory of 764	2528	PO904321.exe	35
PID 2528 wrote to memory of 764	2528	PO904321.exe	35
PID 2528 wrote to memory of 764	2528	PO904321.exe	35
PID 2528 wrote to memory of 764	2528	PO904321.exe	35
PID 2528 wrote to memory of 2664	2528	PO904321.exe	37
PID 2528 wrote to memory of 2664	2528	PO904321.exe	37
PID 2528 wrote to memory of 2664	2528	PO904321.exe	37
PID 2528 wrote to memory of 2664	2528	PO904321.exe	37
PID 2528 wrote to memory of 2664	2528	PO904321.exe	37
PID 2528 wrote to memory of 2664	2528	PO904321.exe	37
PID 2528 wrote to memory of 2664	2528	PO904321.exe	37
PID 2528 wrote to memory of 2664	2528	PO904321.exe	37
PID 2528 wrote to memory of 2664	2528	PO904321.exe	37
PID 2528 wrote to memory of 2664	2528	PO904321.exe	37
PID 2528 wrote to memory of 2664	2528	PO904321.exe	37
PID 2528 wrote to memory of 2664	2528	PO904321.exe	37
PID 2528 wrote to memory of 2664	2528	PO904321.exe	37

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:2528
- 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:2572
- 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:2852
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rxoPEmTYk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE6C6.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:764
- 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:2664

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
4b984a6dd1e48b08418bbdb64c109ba6

SHA1
170d7246434d1c54489192564949f2dbc82d9018

SHA256
39dc73a371d65b6c3bbd131335da025d3b0af39ea0915b390f1ecc9cf422bfc2

SHA512
efbc0651ebe0e9d4f8239ebae4da736fec59d0095af468604a29344331b0284f4daab18da310bcdc7b859406d723be899a49bba0f2696eb54c093261f282a4e7

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE6C6.tmp

Filesize
1KB

MD5
3186b98c4088ba5126ff2a0342063fcf

SHA1
6067523755ff070c958ce861d30bd64ddefe10e4

SHA256
0edd8cc0579394f2af9199f865166ed4f757d6937236e35a386cd1bda25b0129

SHA512
b95e40fb48b1de62c0be1c574bf2233223c4d49fdb39826e8e88ab12c978f3c22ed2e37922a49928fc8c42a871eb89bc1bd47ab5539ed730013673110e5cd392

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\7CYCV1TD41G54R6MI9UF.temp

Filesize
7KB

MD5
4022dbe0e659d7d6e7c2e506304dc582

SHA1
f3761c6651c77e7232f67f6e20a49fc814b9e24a

SHA256
86ca49a7c1ab7818f017dc73498da1593e43c7217503321b2fadf53f7987c4a4

SHA512
d756863bc5aa054d211aa017c97bb1001481c949b5b1d726fbd37f4fc9fc6c33b24459d9ef338c65e687df2cac0634966c2a9b61eb44e6b9bb3c72a10f466f52

Download Submit
memory/2528-41-0x00000000742B0000-0x000000007499E000-memory.dmp

Filesize
6.9MB

Download
memory/2528-1-0x0000000001210000-0x00000000012F2000-memory.dmp

Filesize
904KB

Download
memory/2528-2-0x00000000742B0000-0x000000007499E000-memory.dmp

Filesize
6.9MB

Download
memory/2528-3-0x0000000000330000-0x0000000000340000-memory.dmp

Filesize
64KB

Download
memory/2528-4-0x00000000742B0000-0x000000007499E000-memory.dmp

Filesize
6.9MB

Download
memory/2528-5-0x0000000005580000-0x0000000005640000-memory.dmp

Filesize
768KB

Download
memory/2528-0-0x00000000742BE000-0x00000000742BF000-memory.dmp

Filesize
4KB

Download
memory/2664-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2664-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads