remcos | 66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-09-2024 13:01

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General

Target

66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe
Size

851KB
MD5

ff6f202ace40743852a03f34b7b41707
SHA1

31e96d82538ecd77f5a190bbc070065cb64bd12b
SHA256

66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490
SHA512

94edc736129032ae8c07db023f9d264c9743aab4cf2d294de995d780c71dcda33b7637a23e8161dbdf830fa4affd030bbe3912d7d0acc5b9061b81ee42e8d174
SSDEEP

24576:KYBfQYzELibC4jGl7Wud08XzvFn9j5Utq:KYBtbC4ql0ozt9j5Ut

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

107.175.229.139:8823

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-2BGC0K
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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1428 set thread context of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2956	Powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2956	Powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2956	Powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2896	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1428 wrote to memory of 2956	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	30
PID 1428 wrote to memory of 2956	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	30
PID 1428 wrote to memory of 2956	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	30
PID 1428 wrote to memory of 2956	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	30
PID 1428 wrote to memory of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 1428 wrote to memory of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 1428 wrote to memory of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 1428 wrote to memory of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 1428 wrote to memory of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 1428 wrote to memory of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 1428 wrote to memory of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 1428 wrote to memory of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 1428 wrote to memory of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 1428 wrote to memory of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 1428 wrote to memory of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 1428 wrote to memory of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 1428 wrote to memory of 2896	1428	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32

C:\Users\Admin\AppData\Local\Temp\66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe
"C:\Users\Admin\AppData\Local\Temp\66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1428
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
  "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'
  2⤵
  - Drops startup file
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2956
- C:\Users\Admin\AppData\Local\Temp\66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe
  "C:\Users\Admin\AppData\Local\Temp\66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2896

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
8e0d8bbb55f3ec270c48c1344dab545b

SHA1
72c4f75f36b8683b13ed3df2f6e276d06c7129ef

SHA256
f7b97924d192962e807beb9903ceae866d6e295f693fb6df01515787a1d5baaf

SHA512
cae1eaa727307b707c8f4a5cc8a07dc6c882a619fe473c6f3b6a33cab15ae8e200ac2113098ab9bd8a93838c8c02bbbf242c09433c61f2b9a41895e491147a0a

Download Submit
memory/1428-0-0x00000000749EE000-0x00000000749EF000-memory.dmp

Filesize
4KB

Download
memory/1428-1-0x00000000013C0000-0x000000000149C000-memory.dmp

Filesize
880KB

Download
memory/1428-2-0x0000000000E70000-0x0000000000F1E000-memory.dmp

Filesize
696KB

Download
memory/1428-3-0x00000000749E0000-0x00000000750CE000-memory.dmp

Filesize
6.9MB

Download
memory/1428-7-0x00000000004C0000-0x00000000004C8000-memory.dmp

Filesize
32KB

Download
memory/1428-33-0x00000000749E0000-0x00000000750CE000-memory.dmp

Filesize
6.9MB

Download
memory/2896-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2896-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-10-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2896-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2956-6-0x000000006FA91000-0x000000006FA92000-memory.dmp

Filesize
4KB

Download
memory/2956-35-0x000000006FA90000-0x000000007003B000-memory.dmp

Filesize
5.7MB

Download
memory/2956-8-0x000000006FA90000-0x000000007003B000-memory.dmp

Filesize
5.7MB

Download
memory/2956-32-0x0000000002600000-0x0000000002640000-memory.dmp

Filesize
256KB

Download
memory/2956-9-0x000000006FA90000-0x000000007003B000-memory.dmp

Filesize
5.7MB

Download
memory/2956-28-0x000000006FA90000-0x000000007003B000-memory.dmp

Filesize
5.7MB

Download