remcos | 19b92161154b6d9fca60de3f5aec7e64b4b7e1a3281d60784e2403e756f46c26

Analysis

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

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
10-09-2024 03:36

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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

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
4336	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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	HSBC E-Statement Doc_pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4792 set thread context of 3392	4792	HSBC E-Statement Doc_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 E-Statement Doc_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 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
1992	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4792	HSBC E-Statement Doc_pdf.exe
4792	HSBC E-Statement Doc_pdf.exe
4792	HSBC E-Statement Doc_pdf.exe
4336	powershell.exe
4792	HSBC E-Statement Doc_pdf.exe
4336	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4792	HSBC E-Statement Doc_pdf.exe
Token: SeDebugPrivilege	4336	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3392	HSBC E-Statement Doc_pdf.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3392	HSBC E-Statement Doc_pdf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3392	HSBC E-Statement Doc_pdf.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4792 wrote to memory of 4336	4792	HSBC E-Statement Doc_pdf.exe	93
PID 4792 wrote to memory of 4336	4792	HSBC E-Statement Doc_pdf.exe	93
PID 4792 wrote to memory of 4336	4792	HSBC E-Statement Doc_pdf.exe	93
PID 4792 wrote to memory of 1992	4792	HSBC E-Statement Doc_pdf.exe	95
PID 4792 wrote to memory of 1992	4792	HSBC E-Statement Doc_pdf.exe	95
PID 4792 wrote to memory of 1992	4792	HSBC E-Statement Doc_pdf.exe	95
PID 4792 wrote to memory of 408	4792	HSBC E-Statement Doc_pdf.exe	97
PID 4792 wrote to memory of 408	4792	HSBC E-Statement Doc_pdf.exe	97
PID 4792 wrote to memory of 408	4792	HSBC E-Statement Doc_pdf.exe	97
PID 4792 wrote to memory of 3392	4792	HSBC E-Statement Doc_pdf.exe	98
PID 4792 wrote to memory of 3392	4792	HSBC E-Statement Doc_pdf.exe	98
PID 4792 wrote to memory of 3392	4792	HSBC E-Statement Doc_pdf.exe	98
PID 4792 wrote to memory of 3392	4792	HSBC E-Statement Doc_pdf.exe	98
PID 4792 wrote to memory of 3392	4792	HSBC E-Statement Doc_pdf.exe	98
PID 4792 wrote to memory of 3392	4792	HSBC E-Statement Doc_pdf.exe	98
PID 4792 wrote to memory of 3392	4792	HSBC E-Statement Doc_pdf.exe	98
PID 4792 wrote to memory of 3392	4792	HSBC E-Statement Doc_pdf.exe	98
PID 4792 wrote to memory of 3392	4792	HSBC E-Statement Doc_pdf.exe	98
PID 4792 wrote to memory of 3392	4792	HSBC E-Statement Doc_pdf.exe	98
PID 4792 wrote to memory of 3392	4792	HSBC E-Statement Doc_pdf.exe	98
PID 4792 wrote to memory of 3392	4792	HSBC E-Statement Doc_pdf.exe	98

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⤵
- 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:4792
- 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:4336
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vazjrtpjLcu" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCD04.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1992
- 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⤵
  PID:408
- 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:3392

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
238B

MD5
fab76defa3baad8bf51bf9f31d9e062b

SHA1
e34dbefff188c82d7265094703b18397cb41353f

SHA256
f3284e65050f5aa1d7cab941b71e94163acbe6a8a9f5d53b97c5f19e9d0a1423

SHA512
e4b49ddea55eb7c9a400eba5ac27180864b7b5cf8480632fce18cf761896154750d386ef4efa3c339ad61b9bfbbe0a7d7de618b53bd20473150d2a763cc8d4a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oqcxjyyq.z4i.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCD04.tmp

Filesize
1KB

MD5
63c7a6318f76eb6c4096f23e3c74ef3b

SHA1
6985657fd4943f113888ab972c647a123361a3a8

SHA256
0de1c89c140efbb55524e1f0781f39023a5479c890fbfd5c4bfdd987bc3ab9cd

SHA512
d143c05baaf2dacad1d8d229250ec00481c564359d2108037f7e460512686f3fce7b149c9b81ba22ce106367939b86b569c4ceea25059f568fba9dafdd7103fb

Download Submit
memory/3392-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-91-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-90-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-98-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-106-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-107-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3392-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4336-18-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/4336-64-0x0000000007180000-0x0000000007191000-memory.dmp

Filesize
68KB

Download
memory/4336-38-0x0000000005C50000-0x0000000005C6E000-memory.dmp

Filesize
120KB

Download
memory/4336-15-0x0000000002320000-0x0000000002356000-memory.dmp

Filesize
216KB

Download
memory/4336-40-0x00000000061E0000-0x000000000622C000-memory.dmp

Filesize
304KB

Download
memory/4336-30-0x00000000055F0000-0x0000000005656000-memory.dmp

Filesize
408KB

Download
memory/4336-32-0x0000000005660000-0x00000000056C6000-memory.dmp

Filesize
408KB

Download
memory/4336-21-0x0000000004C90000-0x0000000004CB2000-memory.dmp

Filesize
136KB

Download
memory/4336-19-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/4336-47-0x0000000006C10000-0x0000000006C42000-memory.dmp

Filesize
200KB

Download
memory/4336-48-0x000000006F2E0000-0x000000006F32C000-memory.dmp

Filesize
304KB

Download
memory/4336-58-0x00000000061B0000-0x00000000061CE000-memory.dmp

Filesize
120KB

Download
memory/4336-59-0x0000000006C50000-0x0000000006CF3000-memory.dmp

Filesize
652KB

Download
memory/4336-61-0x0000000006D70000-0x0000000006D8A000-memory.dmp

Filesize
104KB

Download
memory/4336-60-0x0000000007630000-0x0000000007CAA000-memory.dmp

Filesize
6.5MB

Download
memory/4336-62-0x0000000006FF0000-0x0000000006FFA000-memory.dmp

Filesize
40KB

Download
memory/4336-63-0x0000000007200000-0x0000000007296000-memory.dmp

Filesize
600KB

Download
memory/4336-37-0x00000000057D0000-0x0000000005B24000-memory.dmp

Filesize
3.3MB

Download
memory/4336-65-0x00000000071B0000-0x00000000071BE000-memory.dmp

Filesize
56KB

Download
memory/4336-66-0x00000000071C0000-0x00000000071D4000-memory.dmp

Filesize
80KB

Download
memory/4336-67-0x00000000072C0000-0x00000000072DA000-memory.dmp

Filesize
104KB

Download
memory/4336-68-0x00000000072A0000-0x00000000072A8000-memory.dmp

Filesize
32KB

Download
memory/4336-71-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/4336-16-0x0000000004FC0000-0x00000000055E8000-memory.dmp

Filesize
6.2MB

Download
memory/4792-0-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download
memory/4792-39-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/4792-10-0x0000000009F60000-0x0000000009FFC000-memory.dmp

Filesize
624KB

Download
memory/4792-9-0x0000000007830000-0x00000000078F0000-memory.dmp

Filesize
768KB

Download
memory/4792-8-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/4792-7-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download
memory/4792-6-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

Filesize
64KB

Download
memory/4792-5-0x00000000049F0000-0x00000000049FA000-memory.dmp

Filesize
40KB

Download
memory/4792-4-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/4792-3-0x0000000004A30000-0x0000000004AC2000-memory.dmp

Filesize
584KB

Download
memory/4792-2-0x0000000004FE0000-0x0000000005584000-memory.dmp

Filesize
5.6MB

Download
memory/4792-1-0x0000000000040000-0x0000000000136000-memory.dmp

Filesize
984KB

Download