remcos | dc1a85f49c26ef787959e2e9bd9d10259be7708db10895af90c02e512d215623

General

Target

be817589827272888d6cb6aceae789be_JaffaCakes118.exe
Size

260KB
MD5

be817589827272888d6cb6aceae789be
SHA1

e10e161f0a936f2448a8f31e5d2a2dcec42f9bce
SHA256

dc1a85f49c26ef787959e2e9bd9d10259be7708db10895af90c02e512d215623
SHA512

f02c3f13a2339193594f8ac54b2924ffffad5a8068aa243b17f5685070a67301ead84103bde8a34765149ffa8f050cf523d647d85793b002864c44989caa9c67
SSDEEP

6144:B6E3WpQMV/0AfoXvXAa5EQJJfDo5WvL6xU3RUCj5:B6FQMGpfwkDs82tE

Score

10^/10

remcos host discovery execution rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

162.218.211.157:8780

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
remcos_rjetovsmjxvhqax
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
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

Beds Protector Packer 1 IoCs

Detects Beds Protector packer used to load .NET malware.

resource	yara_rule
behavioral1/memory/2088-3-0x0000000000450000-0x0000000000490000-memory.dmp	beds_protector

Drops startup file 2 IoCs

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2088 set thread context of 2992	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	32

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
704	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	Powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	be817589827272888d6cb6aceae789be_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	be817589827272888d6cb6aceae789be_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
704	Powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	704	Powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2992	be817589827272888d6cb6aceae789be_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2992	be817589827272888d6cb6aceae789be_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2992	be817589827272888d6cb6aceae789be_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 704	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	30
PID 2088 wrote to memory of 704	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	30
PID 2088 wrote to memory of 704	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	30
PID 2088 wrote to memory of 704	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	30
PID 2088 wrote to memory of 2992	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	32
PID 2088 wrote to memory of 2992	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	32
PID 2088 wrote to memory of 2992	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	32
PID 2088 wrote to memory of 2992	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	32
PID 2088 wrote to memory of 2992	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	32
PID 2088 wrote to memory of 2992	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	32
PID 2088 wrote to memory of 2992	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	32
PID 2088 wrote to memory of 2992	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	32
PID 2088 wrote to memory of 2992	2088	be817589827272888d6cb6aceae789be_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\be817589827272888d6cb6aceae789be_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\be817589827272888d6cb6aceae789be_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
  "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\be817589827272888d6cb6aceae789be_JaffaCakes118.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Drivers.exe'
  2⤵
  - Drops startup file
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:704
- C:\Users\Admin\AppData\Local\Temp\be817589827272888d6cb6aceae789be_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\be817589827272888d6cb6aceae789be_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:2992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/704-6-0x000000006F1E1000-0x000000006F1E2000-memory.dmp

Filesize
4KB

Download
memory/704-7-0x000000006F1E0000-0x000000006F78B000-memory.dmp

Filesize
5.7MB

Download
memory/704-8-0x000000006F1E0000-0x000000006F78B000-memory.dmp

Filesize
5.7MB

Download
memory/704-9-0x000000006F1E0000-0x000000006F78B000-memory.dmp

Filesize
5.7MB

Download
memory/704-10-0x000000006F1E0000-0x000000006F78B000-memory.dmp

Filesize
5.7MB

Download
memory/704-12-0x000000006F1E0000-0x000000006F78B000-memory.dmp

Filesize
5.7MB

Download
memory/2088-13-0x0000000000520000-0x0000000000536000-memory.dmp

Filesize
88KB

Download
memory/2088-0-0x000000007498E000-0x000000007498F000-memory.dmp

Filesize
4KB

Download
memory/2088-1-0x0000000000A00000-0x0000000000A48000-memory.dmp

Filesize
288KB

Download
memory/2088-2-0x0000000074980000-0x000000007506E000-memory.dmp

Filesize
6.9MB

Download
memory/2088-3-0x0000000000450000-0x0000000000490000-memory.dmp

Filesize
256KB

Download
memory/2088-35-0x0000000074980000-0x000000007506E000-memory.dmp

Filesize
6.9MB

Download
memory/2992-27-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2992-26-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2992-16-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2992-18-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2992-20-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2992-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2992-24-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2992-14-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2992-28-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2992-29-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2992-30-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2992-31-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2992-32-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2992-36-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download

Analysis

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