remcos | 66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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 4300 set thread context of 696	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	88

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3832	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 2 IoCs

pid	Process
3832	Powershell.exe
3832	Powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3832	Powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
696	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4300 wrote to memory of 3832	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	86
PID 4300 wrote to memory of 3832	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	86
PID 4300 wrote to memory of 3832	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	86
PID 4300 wrote to memory of 696	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	88
PID 4300 wrote to memory of 696	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	88
PID 4300 wrote to memory of 696	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	88
PID 4300 wrote to memory of 696	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	88
PID 4300 wrote to memory of 696	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	88
PID 4300 wrote to memory of 696	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	88
PID 4300 wrote to memory of 696	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	88
PID 4300 wrote to memory of 696	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	88
PID 4300 wrote to memory of 696	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	88
PID 4300 wrote to memory of 696	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	88
PID 4300 wrote to memory of 696	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	88
PID 4300 wrote to memory of 696	4300	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	88

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:4300
- 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:3832
- 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:696

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
d0eaccd767f157e764ef1303683ffdca

SHA1
e82616fec62bc312e68feedab7b8539c2d5f1f8e

SHA256
97a133b825e138aea3261bbb3f557a4af5c358144001ba17b924a397215e728e

SHA512
c949f5242cd112b3b194e5635d1cbd874858181040216c7bde7d19cb9bfaec91e1159571c9c9a68cd14a320b2cbd1d547c7218187774540960721d8128359985

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wx5b1hwc.1ne.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/696-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/696-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3832-27-0x00000000060A0000-0x00000000060EC000-memory.dmp

Filesize
304KB

Download
memory/3832-14-0x0000000005190000-0x00000000051F6000-memory.dmp

Filesize
408KB

Download
memory/3832-26-0x0000000006050000-0x000000000606E000-memory.dmp

Filesize
120KB

Download
memory/3832-15-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/3832-25-0x0000000005A30000-0x0000000005D84000-memory.dmp

Filesize
3.3MB

Download
memory/3832-12-0x0000000005080000-0x00000000050A2000-memory.dmp

Filesize
136KB

Download
memory/3832-39-0x0000000006550000-0x00000000065E6000-memory.dmp

Filesize
600KB

Download
memory/3832-40-0x00000000064D0000-0x00000000064EA000-memory.dmp

Filesize
104KB

Download
memory/3832-13-0x0000000005120000-0x0000000005186000-memory.dmp

Filesize
408KB

Download
memory/3832-41-0x0000000006520000-0x0000000006542000-memory.dmp

Filesize
136KB

Download
memory/3832-46-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/3832-8-0x0000000002720000-0x0000000002756000-memory.dmp

Filesize
216KB

Download
memory/3832-11-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/3832-9-0x0000000005300000-0x0000000005928000-memory.dmp

Filesize
6.2MB

Download
memory/3832-10-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4300-6-0x0000000005100000-0x00000000051AE000-memory.dmp

Filesize
696KB

Download
memory/4300-1-0x00000000003F0000-0x00000000004CC000-memory.dmp

Filesize
880KB

Download
memory/4300-0-0x0000000074B4E000-0x0000000074B4F000-memory.dmp

Filesize
4KB

Download
memory/4300-42-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4300-3-0x0000000004F40000-0x0000000004FD2000-memory.dmp

Filesize
584KB

Download
memory/4300-28-0x00000000051E0000-0x00000000051E8000-memory.dmp

Filesize
32KB

Download
memory/4300-2-0x0000000005450000-0x00000000059F4000-memory.dmp

Filesize
5.6MB

Download
memory/4300-7-0x0000000005280000-0x000000000531C000-memory.dmp

Filesize
624KB

Download
memory/4300-5-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4300-4-0x00000000050E0000-0x00000000050EA000-memory.dmp

Filesize
40KB

Download