remcos | dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db

Analysis

max time kernel
149s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2024 13:12

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

RFQ_PX2_MULE2024_Travco_Engineering_Construction_PDF.exe
Size

1.3MB
MD5

973306ff45c5b4ee7333db7a5ef7a0f9
SHA1

32c7065633f821f72f2c2af4a572414cdd79ea91
SHA256

dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db
SHA512

2d703af64af2c213de8e92ab0fa77d692f55f15c3e85d4f5aa4eb6fc049b2ab36ef8ac7b25a85c06aef8eb22972e5103fb5533288f9f9cccabbbaadebc892540
SSDEEP

24576:ztb20pkaCqT5TBWgNQ7ato13PtKK5QXpdbt86F+LAisTLZ6A:wVg5tQ7at8FFOpXt+LAiY5

Score

10^/10

remcos work collection discovery rat

Malware Config

Extracted

Family

remcos

Botnet

WORK

netflixyoutubebrowser.duckdns.org:34043

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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
Rmc-CDDRK8
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
Remcos family
remcos

Detected Nirsoft tools 6 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/4964-44-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4464-43-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2140-41-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4464-39-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2140-38-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2140-49-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4464-43-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4464-39-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2140-41-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2140-38-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2140-49-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\schoollike.vbs	schoollike.exe

Executes dropped EXE 1 IoCs

pid	Process
1988	schoollike.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3580-6-0x0000000001500000-0x0000000001900000-memory.dmp	autoit_exe
behavioral2/files/0x000a000000023b6f-9.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1988 set thread context of 1076	1988	schoollike.exe	84
PID 1076 set thread context of 2140	1076	svchost.exe	88
PID 1076 set thread context of 4464	1076	svchost.exe	89
PID 1076 set thread context of 4964	1076	svchost.exe	90

System Location Discovery: System Language Discovery 1 TTPs 6 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	RFQ_PX2_MULE2024_Travco_Engineering_Construction_PDF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schoollike.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4964	svchost.exe
4964	svchost.exe
2140	svchost.exe
2140	svchost.exe
2140	svchost.exe
2140	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
1988	schoollike.exe
1076	svchost.exe
1076	svchost.exe
1076	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4964	svchost.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3580	RFQ_PX2_MULE2024_Travco_Engineering_Construction_PDF.exe
3580	RFQ_PX2_MULE2024_Travco_Engineering_Construction_PDF.exe
1988	schoollike.exe
1988	schoollike.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
3580	RFQ_PX2_MULE2024_Travco_Engineering_Construction_PDF.exe
3580	RFQ_PX2_MULE2024_Travco_Engineering_Construction_PDF.exe
1988	schoollike.exe
1988	schoollike.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3580 wrote to memory of 1988	3580	RFQ_PX2_MULE2024_Travco_Engineering_Construction_PDF.exe	83
PID 3580 wrote to memory of 1988	3580	RFQ_PX2_MULE2024_Travco_Engineering_Construction_PDF.exe	83
PID 3580 wrote to memory of 1988	3580	RFQ_PX2_MULE2024_Travco_Engineering_Construction_PDF.exe	83
PID 1988 wrote to memory of 1076	1988	schoollike.exe	84
PID 1988 wrote to memory of 1076	1988	schoollike.exe	84
PID 1988 wrote to memory of 1076	1988	schoollike.exe	84
PID 1988 wrote to memory of 1076	1988	schoollike.exe	84
PID 1076 wrote to memory of 2140	1076	svchost.exe	88
PID 1076 wrote to memory of 2140	1076	svchost.exe	88
PID 1076 wrote to memory of 2140	1076	svchost.exe	88
PID 1076 wrote to memory of 2140	1076	svchost.exe	88
PID 1076 wrote to memory of 4464	1076	svchost.exe	89
PID 1076 wrote to memory of 4464	1076	svchost.exe	89
PID 1076 wrote to memory of 4464	1076	svchost.exe	89
PID 1076 wrote to memory of 4464	1076	svchost.exe	89
PID 1076 wrote to memory of 4964	1076	svchost.exe	90
PID 1076 wrote to memory of 4964	1076	svchost.exe	90
PID 1076 wrote to memory of 4964	1076	svchost.exe	90
PID 1076 wrote to memory of 4964	1076	svchost.exe	90

C:\Users\Admin\AppData\Local\Temp\RFQ_PX2_MULE2024_Travco_Engineering_Construction_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ_PX2_MULE2024_Travco_Engineering_Construction_PDF.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3580
- C:\Users\Admin\AppData\Local\penstocks\schoollike.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ_PX2_MULE2024_Travco_Engineering_Construction_PDF.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1988
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ_PX2_MULE2024_Travco_Engineering_Construction_PDF.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:1076
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\lzrjbrtrjkulhbssdsirtfpkrjmruaxmj"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2140
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\vbwbcj"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:4464
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\ywkudcpmt"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Allene

Filesize
481KB

MD5
226f0d51adcb15d946de05b1cd862385

SHA1
a5fba80b43f7d4c7b826d74234ec60ada74275d6

SHA256
8de96916fd4b14bc3d42a8cb28b1f8759a7f17f512a435d63964cd9ba3dda77d

SHA512
9f091913108fbba998d5b1b745c273f4aa09cbc9427119aeb383c87a302ccdb07dbde67f146bd116bc795057c290345cf9f3b590fcf354154af0d4197b132b6e

Download Submit
C:\Users\Admin\AppData\Local\Temp\lzrjbrtrjkulhbssdsirtfpkrjmruaxmj

Filesize
4KB

MD5
c3c5f2de99b7486f697634681e21bab0

SHA1
00f90d495c0b2b63fde6532e033fdd2ade25633d

SHA256
76296dc29f718988107d35d0e0b835c2bf3fc7405e79e5121aa4738f82b51582

SHA512
7c60ffdc093de30e793d20768877f2f586bee3e948767871f9a1139252d5d2f593ba6f88ce0ed5f72c79faddb26186792df0581e4b6c84d405c44d9d12f951b8

Download Submit
C:\Users\Admin\AppData\Local\penstocks\schoollike.exe

Filesize
1.3MB

MD5
973306ff45c5b4ee7333db7a5ef7a0f9

SHA1
32c7065633f821f72f2c2af4a572414cdd79ea91

SHA256
dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db

SHA512
2d703af64af2c213de8e92ab0fa77d692f55f15c3e85d4f5aa4eb6fc049b2ab36ef8ac7b25a85c06aef8eb22972e5103fb5533288f9f9cccabbbaadebc892540

Download Submit
memory/1076-53-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1076-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-62-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-56-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1076-57-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1076-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1988-18-0x00000000012A0000-0x00000000016A0000-memory.dmp

Filesize
4.0MB

Download
memory/2140-36-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2140-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2140-41-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2140-49-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2140-38-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3580-6-0x0000000001500000-0x0000000001900000-memory.dmp

Filesize
4.0MB

Download
memory/4464-43-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4464-39-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4464-37-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4464-34-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4964-44-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4964-40-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4964-42-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download