remcos | 1c2a5b8fae11f7c10d52ad7844ce50c1e45deb88bdb83063e087abeeead69bf8

General

Target

DHL AWB_NO_90785388091.scr
Size

1.0MB
MD5

ad02c1d63098791b74efafd0f684956e
SHA1

8036d3f0acfc9aaa164b8a7e8af64e6068a492c7
SHA256

8111eaa8541605d148824165100a381556716c3c73aadee3f938bfc036756863
SHA512

5b276c9651f2858cbfe2109733e9d93ec735d7687289bf53b921cfc2002e216ba551136270c5d292a3c829582ffef7c92cbb17f25c5e089148c3517fef457b3b
SSDEEP

24576:kLu2uOrtwKPRr/6f3ffazcU3nkTTeZi64UX+FUX0lojqIu2:klu0wSYfEc4kfezXKUP

Score

10^/10

remcos hdyebf discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

hdyebf

C2

decmainserver.webredirect.org: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
46875-RPQWNM
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
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
2820	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2092 set thread context of 1804	2092	DHL AWB_NO_90785388091.scr	34

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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DHL AWB_NO_90785388091.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DHL AWB_NO_90785388091.scr

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
2824	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2820	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2820	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 2820	2092	DHL AWB_NO_90785388091.scr	30
PID 2092 wrote to memory of 2820	2092	DHL AWB_NO_90785388091.scr	30
PID 2092 wrote to memory of 2820	2092	DHL AWB_NO_90785388091.scr	30
PID 2092 wrote to memory of 2820	2092	DHL AWB_NO_90785388091.scr	30
PID 2092 wrote to memory of 2824	2092	DHL AWB_NO_90785388091.scr	31
PID 2092 wrote to memory of 2824	2092	DHL AWB_NO_90785388091.scr	31
PID 2092 wrote to memory of 2824	2092	DHL AWB_NO_90785388091.scr	31
PID 2092 wrote to memory of 2824	2092	DHL AWB_NO_90785388091.scr	31
PID 2092 wrote to memory of 1804	2092	DHL AWB_NO_90785388091.scr	34
PID 2092 wrote to memory of 1804	2092	DHL AWB_NO_90785388091.scr	34
PID 2092 wrote to memory of 1804	2092	DHL AWB_NO_90785388091.scr	34
PID 2092 wrote to memory of 1804	2092	DHL AWB_NO_90785388091.scr	34
PID 2092 wrote to memory of 1804	2092	DHL AWB_NO_90785388091.scr	34
PID 2092 wrote to memory of 1804	2092	DHL AWB_NO_90785388091.scr	34
PID 2092 wrote to memory of 1804	2092	DHL AWB_NO_90785388091.scr	34
PID 2092 wrote to memory of 1804	2092	DHL AWB_NO_90785388091.scr	34
PID 2092 wrote to memory of 1804	2092	DHL AWB_NO_90785388091.scr	34
PID 2092 wrote to memory of 1804	2092	DHL AWB_NO_90785388091.scr	34
PID 2092 wrote to memory of 1804	2092	DHL AWB_NO_90785388091.scr	34
PID 2092 wrote to memory of 1804	2092	DHL AWB_NO_90785388091.scr	34
PID 2092 wrote to memory of 1804	2092	DHL AWB_NO_90785388091.scr	34

C:\Users\Admin\AppData\Local\Temp\DHL AWB_NO_90785388091.scr
"C:\Users\Admin\AppData\Local\Temp\DHL AWB_NO_90785388091.scr" /S
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WaZnHi.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2820
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WaZnHi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp50AF.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2824
- C:\Users\Admin\AppData\Local\Temp\DHL AWB_NO_90785388091.scr
  "C:\Users\Admin\AppData\Local\Temp\DHL AWB_NO_90785388091.scr"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1804

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp50AF.tmp

Filesize
1KB

MD5
a89b38cd89fe177aa8212a1b178a2896

SHA1
2a0bf17cb4c2cf5ba0f52a96fe54e5348d54cf05

SHA256
8f07d3fe361678cd258d921b5e6a6fa684c737182325831d6b0033b80eb0c06e

SHA512
367ee0008d258abc4fc0317eb28875cc96bf823fed0352fd38c3fac87e4405dee0b9160f7cd309a7622bac18f35cf374e2909ee9ee3aaf970791efafb564c640

Download Submit
memory/1804-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1804-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1804-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2092-28-0x0000000074B00000-0x00000000751EE000-memory.dmp

Filesize
6.9MB

Download
memory/2092-2-0x0000000074B00000-0x00000000751EE000-memory.dmp

Filesize
6.9MB

Download
memory/2092-5-0x0000000074B00000-0x00000000751EE000-memory.dmp

Filesize
6.9MB

Download
memory/2092-0-0x0000000074B0E000-0x0000000074B0F000-memory.dmp

Filesize
4KB

Download
memory/2092-1-0x00000000002E0000-0x00000000003E8000-memory.dmp

Filesize
1.0MB

Download
memory/2092-6-0x000000000A420000-0x000000000A4E0000-memory.dmp

Filesize
768KB

Download
memory/2092-4-0x0000000074B0E000-0x0000000074B0F000-memory.dmp

Filesize
4KB

Download
memory/2092-3-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads