remcos | c35175c4ba2c6e56210556138234399fd8ec5dce080040cb2b6018e2c5ba79d0

General

Target

AWB 41174448411.exe
Size

879KB
MD5

b7f666dbb31c5ae7316d4a7a32fab0a8
SHA1

f310928142cb104fb6133d0130270a8b35062591
SHA256

0ea27f62b56bef4fe42893c728fefb4ec62cf7c1f56f40331697cb6ec0e1a60b
SHA512

9bed657f901268e54fb4b36fcc15c27d64be532c47b7771f72baeb443071547615d2733400d804c7b66a6cb5889217033dbb8b7dc33ed0e30a5199edb78073a0
SSDEEP

24576:ePJ3lwMzXGxCh9ZOBsi6CudnMZHbrC5zDY7zkU8Xnh:A99GYTOBcMZP8DRvX

Score

10^/10

remcos 3456789 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

3456789

C2

172.93.220.148:45682

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
765-8M14I5
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

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
1468	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1908 set thread context of 2868	1908	AWB 41174448411.exe	35

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 4 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AWB 41174448411.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AWB 41174448411.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2480	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1468	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1468	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1908 wrote to memory of 1468	1908	AWB 41174448411.exe	31
PID 1908 wrote to memory of 1468	1908	AWB 41174448411.exe	31
PID 1908 wrote to memory of 1468	1908	AWB 41174448411.exe	31
PID 1908 wrote to memory of 1468	1908	AWB 41174448411.exe	31
PID 1908 wrote to memory of 2480	1908	AWB 41174448411.exe	32
PID 1908 wrote to memory of 2480	1908	AWB 41174448411.exe	32
PID 1908 wrote to memory of 2480	1908	AWB 41174448411.exe	32
PID 1908 wrote to memory of 2480	1908	AWB 41174448411.exe	32
PID 1908 wrote to memory of 2868	1908	AWB 41174448411.exe	35
PID 1908 wrote to memory of 2868	1908	AWB 41174448411.exe	35
PID 1908 wrote to memory of 2868	1908	AWB 41174448411.exe	35
PID 1908 wrote to memory of 2868	1908	AWB 41174448411.exe	35
PID 1908 wrote to memory of 2868	1908	AWB 41174448411.exe	35
PID 1908 wrote to memory of 2868	1908	AWB 41174448411.exe	35
PID 1908 wrote to memory of 2868	1908	AWB 41174448411.exe	35
PID 1908 wrote to memory of 2868	1908	AWB 41174448411.exe	35
PID 1908 wrote to memory of 2868	1908	AWB 41174448411.exe	35
PID 1908 wrote to memory of 2868	1908	AWB 41174448411.exe	35
PID 1908 wrote to memory of 2868	1908	AWB 41174448411.exe	35
PID 1908 wrote to memory of 2868	1908	AWB 41174448411.exe	35
PID 1908 wrote to memory of 2868	1908	AWB 41174448411.exe	35

C:\Users\Admin\AppData\Local\Temp\AWB 41174448411.exe
"C:\Users\Admin\AppData\Local\Temp\AWB 41174448411.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1908
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SZuXSONpovRq.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1468
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SZuXSONpovRq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE12B.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2480
- C:\Users\Admin\AppData\Local\Temp\AWB 41174448411.exe
  "C:\Users\Admin\AppData\Local\Temp\AWB 41174448411.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2868

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE12B.tmp

Filesize
1KB

MD5
9c6be77929ef71a4715aab07acb35a55

SHA1
70eebae87801e67f6a5ea673262cb87033b191fc

SHA256
394ae97aaaf6520b74f6c93f7aae7f98ec014dc7f69f89406a22d57b472eace3

SHA512
156e4277d915b7159ff4e3b382bb2eb1c9ac629ed311e875220d640889aff8747ae6d1b702c6bf1a9cf55fc44bc0540ff0f26371c3421aa72835ba1745d65b5c

Download Submit
memory/1908-35-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download
memory/1908-1-0x0000000001330000-0x0000000001412000-memory.dmp

Filesize
904KB

Download
memory/1908-2-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download
memory/1908-3-0x0000000000330000-0x000000000033E000-memory.dmp

Filesize
56KB

Download
memory/1908-4-0x000000007406E000-0x000000007406F000-memory.dmp

Filesize
4KB

Download
memory/1908-5-0x0000000074060000-0x000000007474E000-memory.dmp

Filesize
6.9MB

Download
memory/1908-6-0x0000000005D70000-0x0000000005E2E000-memory.dmp

Filesize
760KB

Download
memory/1908-0-0x000000007406E000-0x000000007406F000-memory.dmp

Filesize
4KB

Download
memory/2868-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2868-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads