remcos | e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c

General

Target

e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe
Size

956KB
MD5

c1eaf8bbb259619bd09f3689f04ff2d9
SHA1

a988ccd6e03d658a9cc52d4a2b44d77b72b0ab43
SHA256

e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c
SHA512

52a2d41a550a0cbbd18f271a7dbe623f799b95a77f5c3800750b59958b5f8575e0b59ef8813887ac65abb9387f99f5d49a1a8d7310d67cf1be593faf8c81f28a
SSDEEP

24576:FdFetw5fuWiDAZhVU6obmbHgthSdSF1x6rH9:78wp+GSmbHigwfuH9

Score

10^/10

remcos remcohost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemcoHost

C2

173.211.106.233:2404

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
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-4WOIVV
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
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
2704	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2172 set thread context of 3008	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	33

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2684	2172	WerFault.exe	30

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	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2704	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2704	powershell.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2704	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	31
PID 2172 wrote to memory of 2704	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	31
PID 2172 wrote to memory of 2704	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	31
PID 2172 wrote to memory of 2704	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	31
PID 2172 wrote to memory of 3008	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	33
PID 2172 wrote to memory of 3008	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	33
PID 2172 wrote to memory of 3008	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	33
PID 2172 wrote to memory of 3008	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	33
PID 2172 wrote to memory of 3008	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	33
PID 2172 wrote to memory of 3008	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	33
PID 2172 wrote to memory of 3008	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	33
PID 2172 wrote to memory of 3008	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	33
PID 2172 wrote to memory of 3008	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	33
PID 2172 wrote to memory of 3008	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	33
PID 2172 wrote to memory of 3008	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	33
PID 2172 wrote to memory of 2684	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	34
PID 2172 wrote to memory of 2684	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	34
PID 2172 wrote to memory of 2684	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	34
PID 2172 wrote to memory of 2684	2172	e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe	34

C:\Users\Admin\AppData\Local\Temp\e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe
"C:\Users\Admin\AppData\Local\Temp\e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2704
- C:\Users\Admin\AppData\Local\Temp\e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe
  "C:\Users\Admin\AppData\Local\Temp\e20555f57172540f06ab77caa0ecd0490b3b378729777d5ab5e10e4a847ff34c.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2172 -s 896
  2⤵
  - Program crash
  PID:2684

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 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

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Downloads

memory/2172-0-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/2172-1-0x0000000000E10000-0x0000000000F06000-memory.dmp

Filesize
984KB

Download
memory/2172-2-0x0000000074CB0000-0x000000007539E000-memory.dmp

Filesize
6.9MB

Download
memory/2172-3-0x00000000003F0000-0x0000000000404000-memory.dmp

Filesize
80KB

Download
memory/2172-4-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/2172-5-0x0000000074CB0000-0x000000007539E000-memory.dmp

Filesize
6.9MB

Download
memory/2172-6-0x0000000004EF0000-0x0000000004FB4000-memory.dmp

Filesize
784KB

Download
memory/2172-25-0x0000000074CB0000-0x000000007539E000-memory.dmp

Filesize
6.9MB

Download
memory/3008-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3008-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3008-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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