remcos | 19b92161154b6d9fca60de3f5aec7e64b4b7e1a3281d60784e2403e756f46c26

General

Target

HSBC E-Statement Doc_pdf.exe
Size

961KB
MD5

9dc670ac35717a6ba33cbc766bad8f16
SHA1

3c7c31d2660bb124c7435b19e728d2dc11370fc3
SHA256

19b92161154b6d9fca60de3f5aec7e64b4b7e1a3281d60784e2403e756f46c26
SHA512

c93f384c8813ad7a20397ce782fdf8e1eb6ba3d48ef1b20c9f833730239a9b2e4fc280a6480e9a757fc4d2368ad101401aeb20d7dbef07d9cb3323a9950d391a
SSDEEP

12288:iA1FLVsXKKIRpbSX344271jwiedZdTtyuZT6dmIUrWf1TkG6FkZlukJWP5ek9:iGFLKapbSnuehTtzZjA1TkGKeukE5

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
3056	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2968 set thread context of 2844	2968	HSBC E-Statement Doc_pdf.exe	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	HSBC E-Statement Doc_pdf.exe
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	HSBC E-Statement Doc_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
2436	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2968	HSBC E-Statement Doc_pdf.exe
2968	HSBC E-Statement Doc_pdf.exe
3056	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2968	HSBC E-Statement Doc_pdf.exe
Token: SeDebugPrivilege	3056	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2844	HSBC E-Statement Doc_pdf.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2844	HSBC E-Statement Doc_pdf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2844	HSBC E-Statement Doc_pdf.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2968 wrote to memory of 3056	2968	HSBC E-Statement Doc_pdf.exe	30
PID 2968 wrote to memory of 3056	2968	HSBC E-Statement Doc_pdf.exe	30
PID 2968 wrote to memory of 3056	2968	HSBC E-Statement Doc_pdf.exe	30
PID 2968 wrote to memory of 3056	2968	HSBC E-Statement Doc_pdf.exe	30
PID 2968 wrote to memory of 2436	2968	HSBC E-Statement Doc_pdf.exe	31
PID 2968 wrote to memory of 2436	2968	HSBC E-Statement Doc_pdf.exe	31
PID 2968 wrote to memory of 2436	2968	HSBC E-Statement Doc_pdf.exe	31
PID 2968 wrote to memory of 2436	2968	HSBC E-Statement Doc_pdf.exe	31
PID 2968 wrote to memory of 2844	2968	HSBC E-Statement Doc_pdf.exe	34
PID 2968 wrote to memory of 2844	2968	HSBC E-Statement Doc_pdf.exe	34
PID 2968 wrote to memory of 2844	2968	HSBC E-Statement Doc_pdf.exe	34
PID 2968 wrote to memory of 2844	2968	HSBC E-Statement Doc_pdf.exe	34
PID 2968 wrote to memory of 2844	2968	HSBC E-Statement Doc_pdf.exe	34
PID 2968 wrote to memory of 2844	2968	HSBC E-Statement Doc_pdf.exe	34
PID 2968 wrote to memory of 2844	2968	HSBC E-Statement Doc_pdf.exe	34
PID 2968 wrote to memory of 2844	2968	HSBC E-Statement Doc_pdf.exe	34
PID 2968 wrote to memory of 2844	2968	HSBC E-Statement Doc_pdf.exe	34
PID 2968 wrote to memory of 2844	2968	HSBC E-Statement Doc_pdf.exe	34
PID 2968 wrote to memory of 2844	2968	HSBC E-Statement Doc_pdf.exe	34
PID 2968 wrote to memory of 2844	2968	HSBC E-Statement Doc_pdf.exe	34
PID 2968 wrote to memory of 2844	2968	HSBC E-Statement Doc_pdf.exe	34

C:\Users\Admin\AppData\Local\Temp\HSBC E-Statement Doc_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\HSBC E-Statement Doc_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:2968
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vazjrtpjLcu.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3056
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vazjrtpjLcu" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD3C3.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2436
- C:\Users\Admin\AppData\Local\Temp\HSBC E-Statement Doc_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\HSBC E-Statement Doc_pdf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:2844

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
238B

MD5
c0d74cc2a08dcad0d11ecb0b75042b3e

SHA1
7b1e61ab46de2a522d7c03a2bb372d2be4e497ce

SHA256
90ddf32cf1cb38a35be7f075c2609fbef67ead2d147f3da0577486fb24695ef3

SHA512
3e143a3afe8b9b1deeaa31ffae861e8c7f73aab548f9ec054c4be12b03cc288f451b1ba0e89e51af1753ce1abae9c95e0be922ff26f1a498f07f58fe3e533f20

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD3C3.tmp

Filesize
1KB

MD5
b78205bcc37b2cd9ad102c23f2b70a97

SHA1
75f659e88fa95f29a7bd1908958f549499ee34e0

SHA256
e5c76f77514d7f0eb4b81b8a1523056cbdbe214b8c1c7dc917aa1d700036ebc4

SHA512
d6f916ddc821835f898bb6eb54ce94e6124a7a9421272962b80fb0fdb1a732f207c6ebc39eda63241ef60e0ba87be5a1a1f8942e2856d6ec2e2550312c34f3d0

Download Submit
memory/2844-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2844-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2844-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2968-1-0x0000000000800000-0x00000000008F6000-memory.dmp

Filesize
984KB

Download
memory/2968-3-0x00000000003A0000-0x00000000003B0000-memory.dmp

Filesize
64KB

Download
memory/2968-5-0x0000000074550000-0x0000000074C3E000-memory.dmp

Filesize
6.9MB

Download
memory/2968-0-0x000000007455E000-0x000000007455F000-memory.dmp

Filesize
4KB

Download
memory/2968-38-0x0000000074550000-0x0000000074C3E000-memory.dmp

Filesize
6.9MB

Download
memory/2968-2-0x0000000074550000-0x0000000074C3E000-memory.dmp

Filesize
6.9MB

Download
memory/2968-6-0x0000000006250000-0x0000000006310000-memory.dmp

Filesize
768KB

Download
memory/2968-4-0x000000007455E000-0x000000007455F000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads