remcos | 573d878dfb560fdb1e4593104f49040584f5418a15165a6b7c31584193ff549a

General

Target

HSBC Payment Advice_pdf.exe
Size

993KB
MD5

d0da590b7edbc0da19fb22989e74094a
SHA1

96ebe02b6e7499acdf741aa1a770511345532cf3
SHA256

fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277
SHA512

6f7547230d5e005b6a9f04db0cb0c64c501dacf6f4836b1061f6dc2135ab8a06f06a1c5d7f90bd87491b534e4bfc20068d498b55bf896d63058ec8035df03a9b
SSDEEP

24576:SUobyDHF8HpzkLmV4ZDeLnmx/E/oLZT2nGr4oI6:DZKJILmVmeKx8gZlI

Score

10^/10

remcos udu discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

udu

C2

UDUM.WORK.GD:2431

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
vlc
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
sos
mouse_option
false
mutex
udm-2WYU92
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

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
3064	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2156 set thread context of 2736	2156	HSBC Payment Advice_pdf.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	HSBC Payment Advice_pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HSBC Payment Advice_pdf.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
2364	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2156	HSBC Payment Advice_pdf.exe
2156	HSBC Payment Advice_pdf.exe
3064	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2156	HSBC Payment Advice_pdf.exe
Token: SeDebugPrivilege	3064	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2736	HSBC Payment Advice_pdf.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2736	HSBC Payment Advice_pdf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2736	HSBC Payment Advice_pdf.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 3064	2156	HSBC Payment Advice_pdf.exe	31
PID 2156 wrote to memory of 3064	2156	HSBC Payment Advice_pdf.exe	31
PID 2156 wrote to memory of 3064	2156	HSBC Payment Advice_pdf.exe	31
PID 2156 wrote to memory of 3064	2156	HSBC Payment Advice_pdf.exe	31
PID 2156 wrote to memory of 2364	2156	HSBC Payment Advice_pdf.exe	33
PID 2156 wrote to memory of 2364	2156	HSBC Payment Advice_pdf.exe	33
PID 2156 wrote to memory of 2364	2156	HSBC Payment Advice_pdf.exe	33
PID 2156 wrote to memory of 2364	2156	HSBC Payment Advice_pdf.exe	33
PID 2156 wrote to memory of 2736	2156	HSBC Payment Advice_pdf.exe	35
PID 2156 wrote to memory of 2736	2156	HSBC Payment Advice_pdf.exe	35
PID 2156 wrote to memory of 2736	2156	HSBC Payment Advice_pdf.exe	35
PID 2156 wrote to memory of 2736	2156	HSBC Payment Advice_pdf.exe	35
PID 2156 wrote to memory of 2736	2156	HSBC Payment Advice_pdf.exe	35
PID 2156 wrote to memory of 2736	2156	HSBC Payment Advice_pdf.exe	35
PID 2156 wrote to memory of 2736	2156	HSBC Payment Advice_pdf.exe	35
PID 2156 wrote to memory of 2736	2156	HSBC Payment Advice_pdf.exe	35
PID 2156 wrote to memory of 2736	2156	HSBC Payment Advice_pdf.exe	35
PID 2156 wrote to memory of 2736	2156	HSBC Payment Advice_pdf.exe	35
PID 2156 wrote to memory of 2736	2156	HSBC Payment Advice_pdf.exe	35
PID 2156 wrote to memory of 2736	2156	HSBC Payment Advice_pdf.exe	35
PID 2156 wrote to memory of 2736	2156	HSBC Payment Advice_pdf.exe	35

C:\Users\Admin\AppData\Local\Temp\HSBC Payment Advice_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\HSBC Payment Advice_pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\FuWEVfUSU.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3064
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FuWEVfUSU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE1A8.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2364
- C:\Users\Admin\AppData\Local\Temp\HSBC Payment Advice_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\HSBC Payment Advice_pdf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:2736

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:\ProgramData\sos\logs.dat

Filesize
236B

MD5
21c99ed4bc03c0a86f171cbfae47c0a6

SHA1
7b2564972969401a5ac73bc9449c33f1ec3351bf

SHA256
1045590b9987b23e3fecd382c4f957f357ccf73b69280cb87b31c1cfc40f8705

SHA512
9fe56968bf5c1dde7d96e4d73eb1049cd4d6e70a3fd86e4e9b880463e11a37864b05e0513f67ae2428c81305fa236202b4aafc280268ed1351ca041188c80c55

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE1A8.tmp

Filesize
1KB

MD5
8c8f25a02a9e50a56cbc2c96e508a56f

SHA1
7ee1955f4fd8dd68d33fe9b5d6e71d385d54d01e

SHA256
7ccc5b2233b4ce14f745dee2936ba8cbe3b3383b39c96544acca4fd62c7c9617

SHA512
f5899611bc4ffca808f2116e32b727c8a8bb86c45016422cc5bd49b11d7006f8f6881faaf9695963ffe9bdc60d0685d309be5268122fbf426bb2461f6f3eab2e

Download Submit
memory/2156-0-0x00000000745BE000-0x00000000745BF000-memory.dmp

Filesize
4KB

Download
memory/2156-1-0x0000000000230000-0x000000000032E000-memory.dmp

Filesize
1016KB

Download
memory/2156-2-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/2156-3-0x0000000001FD0000-0x0000000001FE8000-memory.dmp

Filesize
96KB

Download
memory/2156-4-0x00000000745BE000-0x00000000745BF000-memory.dmp

Filesize
4KB

Download
memory/2156-5-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/2156-6-0x0000000005320000-0x00000000053E0000-memory.dmp

Filesize
768KB

Download
memory/2156-38-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/2736-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2736-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2736-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads