remcos | 2bc219aa0c642b6064f467a9abe85ccf81dfd0191377fa4453863384f22b5fa5

General

Target

REF#1162025.exe
Size

1014KB
MD5

207841acef29b5c400c1c5f2dab09a23
SHA1

f114dac28a6aab09d2df8a58c49944f46077e682
SHA256

2bc219aa0c642b6064f467a9abe85ccf81dfd0191377fa4453863384f22b5fa5
SHA512

97a077d0c1e31d500229e05e1d18f8c5b07d58d31467df7fc3d1068596774ed2536eec36eb4ec34182e1506c7d6d9db3efe0ffa3efbb690acd1df9cee29c6017
SSDEEP

12288:i5t6WhRSUun4dsUU9twXU6H4YOzXXo26Jj3vyQY2ZPLreFRqstME8sGQRu/dlIH/:c6NnicX6raXo3p3bZP0RWMRuvFKNUS

Score

10^/10

remcos 54436 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

54436

C2

jandupdate873.webredirect.org:45688

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
538-8Q7AZ1
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 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2556	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2360 set thread context of 780	2360	REF#1162025.exe	35

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	REF#1162025.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	REF#1162025.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
2568	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2556	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2556	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 2556	2360	REF#1162025.exe	31
PID 2360 wrote to memory of 2556	2360	REF#1162025.exe	31
PID 2360 wrote to memory of 2556	2360	REF#1162025.exe	31
PID 2360 wrote to memory of 2556	2360	REF#1162025.exe	31
PID 2360 wrote to memory of 2568	2360	REF#1162025.exe	33
PID 2360 wrote to memory of 2568	2360	REF#1162025.exe	33
PID 2360 wrote to memory of 2568	2360	REF#1162025.exe	33
PID 2360 wrote to memory of 2568	2360	REF#1162025.exe	33
PID 2360 wrote to memory of 780	2360	REF#1162025.exe	35
PID 2360 wrote to memory of 780	2360	REF#1162025.exe	35
PID 2360 wrote to memory of 780	2360	REF#1162025.exe	35
PID 2360 wrote to memory of 780	2360	REF#1162025.exe	35
PID 2360 wrote to memory of 780	2360	REF#1162025.exe	35
PID 2360 wrote to memory of 780	2360	REF#1162025.exe	35
PID 2360 wrote to memory of 780	2360	REF#1162025.exe	35
PID 2360 wrote to memory of 780	2360	REF#1162025.exe	35
PID 2360 wrote to memory of 780	2360	REF#1162025.exe	35
PID 2360 wrote to memory of 780	2360	REF#1162025.exe	35
PID 2360 wrote to memory of 780	2360	REF#1162025.exe	35
PID 2360 wrote to memory of 780	2360	REF#1162025.exe	35
PID 2360 wrote to memory of 780	2360	REF#1162025.exe	35

C:\Users\Admin\AppData\Local\Temp\REF#1162025.exe
"C:\Users\Admin\AppData\Local\Temp\REF#1162025.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\jrGvlsRbXsS.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2556
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jrGvlsRbXsS" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD69.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2568
- C:\Users\Admin\AppData\Local\Temp\REF#1162025.exe
  "C:\Users\Admin\AppData\Local\Temp\REF#1162025.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:780

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:\Users\Admin\AppData\Local\Temp\tmpD69.tmp

Filesize
1KB

MD5
1da26e8778d28c31b889d64fddcbb1e8

SHA1
f1225865330bd3a2dc7186c87e36979d3b6344d5

SHA256
939fb3d9442dddd9a212df4265171fe45e4f8779d61ddbb3a7c9f65643929747

SHA512
7f8cd5d5be8d61087739cc1288cdbbc758b06b3d06fccd936c0ff37ff896d1c8b4372a47929fbafd654f832cd01851dd621cdfe7ddb5af85e6f113e03d21c90a

Download Submit
memory/780-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/780-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/780-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2360-34-0x0000000074B00000-0x00000000751EE000-memory.dmp

Filesize
6.9MB

Download
memory/2360-1-0x0000000000B80000-0x0000000000C84000-memory.dmp

Filesize
1.0MB

Download
memory/2360-2-0x0000000074B00000-0x00000000751EE000-memory.dmp

Filesize
6.9MB

Download
memory/2360-6-0x0000000005B40000-0x0000000005C00000-memory.dmp

Filesize
768KB

Download
memory/2360-5-0x0000000074B00000-0x00000000751EE000-memory.dmp

Filesize
6.9MB

Download
memory/2360-0-0x0000000074B0E000-0x0000000074B0F000-memory.dmp

Filesize
4KB

Download
memory/2360-4-0x0000000074B0E000-0x0000000074B0F000-memory.dmp

Filesize
4KB

Download
memory/2360-3-0x0000000000A40000-0x0000000000A66000-memory.dmp

Filesize
152KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads