remcos | 98e13e229b92956e6495296d0ebb35d9875afa657922a5d0c603ba92c3984e41

General

Target
98e13e229b92956e6495296d0ebb35d9875afa657922a5d0c603ba92c3984e41.exe
Size 525KB
Sample260908-ywvecaxtdv
SHA256 98e13e229b92956e6495296d0ebb35d9875afa657922a5d0c603ba92c3984e41
MD5 40d7d464173e21c59b469decbc211119
SHA1 cade456b47869a19ee873178272a9a29bf3fc4e9
SHA512 04cd5095e8152a4de275f804dfc02e37e539f3fb5db7e6b93eade4acecc8d6aa9937b1d4246268e397c9767b75a70b6b2df658f60c73232a880b39864002d3e9
SSDEEP 12288:VcF3UU0AViEhkwkhoo+/TUszmXxr1svZ9lxt:x1AViE/kHszmXWZ5
TLSH
T10BB4AE01BAF1C1B2D57664700939EB35DEBCBC210C359D2B63D61E9ABE301519B3AB72
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

remotehost discovery remcos persistence rat

Malware Config

Extracted

Family

remcos

Version

7.3.1 Pro

Botnet

RemoteHost

C2

158.94.209.216:2404

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
true
hide_keylog_file
false
install_flag
true
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-PX5QL2
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Family: Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Executes dropped EXE 2 IoCs

pid	Process
4632	remcos.exe
6032	remcos.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-PX5QL2 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-PX5QL2 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	98e13e229b92956e6495296d0ebb35d9875afa657922a5d0c603ba92c3984e41.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-PX5QL2 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	98e13e229b92956e6495296d0ebb35d9875afa657922a5d0c603ba92c3984e41.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-PX5QL2 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-PX5QL2 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-PX5QL2 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4632 set thread context of 4584	4632	remcos.exe	92
PID 6032 set thread context of 4296	6032	remcos.exe	93

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 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	remcos.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98e13e229b92956e6495296d0ebb35d9875afa657922a5d0c603ba92c3984e41.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4632	remcos.exe
6032	remcos.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4668 wrote to memory of 6032	4668	98e13e229b92956e6495296d0ebb35d9875afa657922a5d0c603ba92c3984e41.exe	91
PID 4632 wrote to memory of 4584	4632	remcos.exe	92
PID 6032 wrote to memory of 4296	6032	remcos.exe	93

C:\Users\Admin\AppData\Local\Temp\98e13e229b92956e6495296d0ebb35d9875afa657922a5d0c603ba92c3984e41.exe
"C:\Users\Admin\AppData\Local\Temp\98e13e229b92956e6495296d0ebb35d9875afa657922a5d0c603ba92c3984e41.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4668
- C:\ProgramData\Remcos\remcos.exe
  "C:\ProgramData\Remcos\remcos.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:6032
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    PID:4296

C:\ProgramData\Remcos\remcos.exe
"C:\ProgramData\Remcos\remcos.exe"
1⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4632
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\SysWOW64\svchost.exe"
  2⤵
  PID:4584

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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

Replay Monitor

Loading Replay Monitor...

Downloads

remcos.exe

Path C:\ProgramData\Remcos\remcos.exe
Size 525KB
SHA256 98e13e229b92956e6495296d0ebb35d9875afa657922a5d0c603ba92c3984e41
MD5 40d7d464173e21c59b469decbc211119
SHA1 cade456b47869a19ee873178272a9a29bf3fc4e9
SHA512 04cd5095e8152a4de275f804dfc02e37e539f3fb5db7e6b93eade4acecc8d6aa9937b1d4246268e397c9767b75a70b6b2df658f60c73232a880b39864002d3e9
SSDEEP 12288:VcF3UU0AViEhkwkhoo+/TUszmXxr1svZ9lxt:x1AViE/kHszmXWZ5
TLSH
T10BB4AE01BAF1C1B2D57664700939EB35DEBCBC210C359D2B63D61E9ABE301519B3AB72
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 336B
SHA256 66f8027893eba43c7617f6be5f264f07cfa95c3dd4a56ed7014c00a23b7b4188
MD5 b3c71883454c5288bcbca410cf8143d2
SHA1 546d39a3cf841982c1b70745dfaa55903cc60f56
SHA512 7d89f1d5db4e031625eec93f4c046e311f9ae622b48645a4382e4df54fde55d63125e0f491f4fdf7dc4025efdc1ea8df59bfc5dd9a8922816fa6790eff9921d7
TLSH
T14EE0C007D50149435006933359A768E1737DFE9C258209889743496B0DD2D4C13B31CD
MD5 SHA1 SHA512 TLSH

Submit Download

memory/4296-6-0x0000000000400000-0x0000000000490000-memory.dmp

Download

memory/4584-2-0x0000000000400000-0x0000000000490000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads