remcos | 573d878dfb560fdb1e4593104f49040584f5418a15165a6b7c31584193ff549a

Analysis

max time kernel
147s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-09-2024 13:57

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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

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
684	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	HSBC Payment Advice_pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2800 set thread context of 2220	2800	HSBC Payment Advice_pdf.exe	98

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
1656	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2800	HSBC Payment Advice_pdf.exe
684	powershell.exe
2800	HSBC Payment Advice_pdf.exe
684	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2800	HSBC Payment Advice_pdf.exe
Token: SeDebugPrivilege	684	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2220	HSBC Payment Advice_pdf.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2220	HSBC Payment Advice_pdf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2220	HSBC Payment Advice_pdf.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2800 wrote to memory of 684	2800	HSBC Payment Advice_pdf.exe	94
PID 2800 wrote to memory of 684	2800	HSBC Payment Advice_pdf.exe	94
PID 2800 wrote to memory of 684	2800	HSBC Payment Advice_pdf.exe	94
PID 2800 wrote to memory of 1656	2800	HSBC Payment Advice_pdf.exe	96
PID 2800 wrote to memory of 1656	2800	HSBC Payment Advice_pdf.exe	96
PID 2800 wrote to memory of 1656	2800	HSBC Payment Advice_pdf.exe	96
PID 2800 wrote to memory of 2220	2800	HSBC Payment Advice_pdf.exe	98
PID 2800 wrote to memory of 2220	2800	HSBC Payment Advice_pdf.exe	98
PID 2800 wrote to memory of 2220	2800	HSBC Payment Advice_pdf.exe	98
PID 2800 wrote to memory of 2220	2800	HSBC Payment Advice_pdf.exe	98
PID 2800 wrote to memory of 2220	2800	HSBC Payment Advice_pdf.exe	98
PID 2800 wrote to memory of 2220	2800	HSBC Payment Advice_pdf.exe	98
PID 2800 wrote to memory of 2220	2800	HSBC Payment Advice_pdf.exe	98
PID 2800 wrote to memory of 2220	2800	HSBC Payment Advice_pdf.exe	98
PID 2800 wrote to memory of 2220	2800	HSBC Payment Advice_pdf.exe	98
PID 2800 wrote to memory of 2220	2800	HSBC Payment Advice_pdf.exe	98
PID 2800 wrote to memory of 2220	2800	HSBC Payment Advice_pdf.exe	98
PID 2800 wrote to memory of 2220	2800	HSBC Payment Advice_pdf.exe	98

C:\Users\Admin\AppData\Local\Temp\HSBC Payment Advice_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\HSBC Payment Advice_pdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2800
- 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:684
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FuWEVfUSU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA21C.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1656
- 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:2220

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\sos\logs.dat

Filesize
236B

MD5
4f25f2ceb3c0f50ec39f419c29940a0b

SHA1
2c7b3946cb78e511afb670b6323669dd4ce35e3a

SHA256
d2a137b7977bb9f2f97e9a4e9b3e51a7bc41f3db6c0e8b4ae311bf2aa3b0fc93

SHA512
b19b7ce005e56e1b6c542cfb49a858509c4e1c1b37820a137676ac0ea540a7238f3ad18324d4a300a74a10655dce2568c8f1d48d5e7f88a1069f281f382b0f08

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2fe5mqb0.sei.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA21C.tmp

Filesize
1KB

MD5
8951e7f9dca2cae01f32f5d0da6dd36b

SHA1
bd17c33503c829c3512fd3617bc1a12da382da6f

SHA256
2527503c2365625aa86ad066c05b343a9d513fca3ce17b0ed9f277f4cfff7ffe

SHA512
af891de3cbfe6224c51ba434a4b88f5ae4a10d4c3bc7753d97742d8e38378d74f6968e73c4b0201b760905c73eb868eddfc05f0db10baabd2b50562c844f6d2a

Download Submit
memory/684-64-0x0000000007500000-0x0000000007596000-memory.dmp

Filesize
600KB

Download
memory/684-63-0x00000000072F0000-0x00000000072FA000-memory.dmp

Filesize
40KB

Download
memory/684-18-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/684-74-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/684-71-0x00000000075A0000-0x00000000075A8000-memory.dmp

Filesize
32KB

Download
memory/684-68-0x00000000075C0000-0x00000000075DA000-memory.dmp

Filesize
104KB

Download
memory/684-67-0x00000000074C0000-0x00000000074D4000-memory.dmp

Filesize
80KB

Download
memory/684-66-0x00000000074B0000-0x00000000074BE000-memory.dmp

Filesize
56KB

Download
memory/684-20-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/684-23-0x0000000005740000-0x00000000057A6000-memory.dmp

Filesize
408KB

Download
memory/684-65-0x0000000007480000-0x0000000007491000-memory.dmp

Filesize
68KB

Download
memory/684-41-0x00000000063E0000-0x000000000642C000-memory.dmp

Filesize
304KB

Download
memory/684-16-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/684-19-0x0000000005030000-0x0000000005658000-memory.dmp

Filesize
6.2MB

Download
memory/684-28-0x0000000005930000-0x0000000005C84000-memory.dmp

Filesize
3.3MB

Download
memory/684-62-0x0000000007280000-0x000000000729A000-memory.dmp

Filesize
104KB

Download
memory/684-22-0x00000000056D0000-0x0000000005736000-memory.dmp

Filesize
408KB

Download
memory/684-21-0x0000000004EA0000-0x0000000004EC2000-memory.dmp

Filesize
136KB

Download
memory/684-61-0x00000000078D0000-0x0000000007F4A000-memory.dmp

Filesize
6.5MB

Download
memory/684-60-0x0000000007160000-0x0000000007203000-memory.dmp

Filesize
652KB

Download
memory/684-59-0x0000000006520000-0x000000000653E000-memory.dmp

Filesize
120KB

Download
memory/684-49-0x0000000075960000-0x00000000759AC000-memory.dmp

Filesize
304KB

Download
memory/684-48-0x0000000006F20000-0x0000000006F52000-memory.dmp

Filesize
200KB

Download
memory/684-15-0x00000000049C0000-0x00000000049F6000-memory.dmp

Filesize
216KB

Download
memory/684-40-0x0000000005F40000-0x0000000005F5E000-memory.dmp

Filesize
120KB

Download
memory/2220-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-111-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-112-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-104-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-103-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-96-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-95-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-88-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-87-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2220-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2800-6-0x00000000050B0000-0x000000000514C000-memory.dmp

Filesize
624KB

Download
memory/2800-1-0x0000000000450000-0x000000000054E000-memory.dmp

Filesize
1016KB

Download
memory/2800-2-0x00000000053F0000-0x0000000005994000-memory.dmp

Filesize
5.6MB

Download
memory/2800-0-0x00000000750DE000-0x00000000750DF000-memory.dmp

Filesize
4KB

Download
memory/2800-3-0x0000000004E40000-0x0000000004ED2000-memory.dmp

Filesize
584KB

Download
memory/2800-4-0x0000000004DC0000-0x0000000004DCA000-memory.dmp

Filesize
40KB

Download
memory/2800-5-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/2800-7-0x0000000005380000-0x0000000005398000-memory.dmp

Filesize
96KB

Download
memory/2800-8-0x00000000750DE000-0x00000000750DF000-memory.dmp

Filesize
4KB

Download
memory/2800-9-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/2800-10-0x00000000060D0000-0x0000000006190000-memory.dmp

Filesize
768KB

Download
memory/2800-39-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download