remcos | 83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08/10/2024, 17:20

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General

Target

Quote.exe
Size

1.6MB
MD5

2e58a14f3a8d78298aee99cb4ea39adc
SHA1

90c96e8671f739a0a20daaafab1567d3c457a612
SHA256

83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344
SHA512

71f115edb7c4013458f957473aa943a910d509f2a94b0ab6e57e84d13e458c17571702830a3eb7cf9e784e52ff1c986e35088a7ce7ab094c48f818d2a7fa6a5d
SSDEEP

24576:ffmMv6Ckr7Mny5QLH0yTfIXPlFb2wjVkwAE9owb7uVJnIJYKR3prW4BoPEK8X3PR:f3v+7/5QLVYdkQ99b7ujIJjixkyKi87

Score

10^/10

remcos remotehost collection discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

www.projectusf.com:2404

Attributes

audio_folder
MicRecords
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
gfh
mouse_option
false
mutex
Rmc-J91LMC
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

Detected Nirsoft tools 7 IoCs

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

resource	yara_rule
behavioral2/memory/3412-42-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3412-36-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1556-35-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3412-34-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1556-33-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3596-43-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1556-45-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3412-42-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3412-36-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3412-34-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1556-35-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1556-33-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1556-45-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Drops startup file 1 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
1800	Quotes.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0008000000023cb8-5.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1800 set thread context of 4804	1800	Quotes.exe	87
PID 4804 set thread context of 1556	4804	svchost.exe	88
PID 4804 set thread context of 3412	4804	svchost.exe	89
PID 4804 set thread context of 3596	4804	svchost.exe	91

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 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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quote.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quotes.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
1556	svchost.exe
1556	svchost.exe
3596	svchost.exe
3596	svchost.exe
1556	svchost.exe
1556	svchost.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1800	Quotes.exe
4804	svchost.exe
4804	svchost.exe
4804	svchost.exe
4804	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3596	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4804	svchost.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1624 wrote to memory of 1800	1624	Quote.exe	86
PID 1624 wrote to memory of 1800	1624	Quote.exe	86
PID 1624 wrote to memory of 1800	1624	Quote.exe	86
PID 1800 wrote to memory of 4804	1800	Quotes.exe	87
PID 1800 wrote to memory of 4804	1800	Quotes.exe	87
PID 1800 wrote to memory of 4804	1800	Quotes.exe	87
PID 1800 wrote to memory of 4804	1800	Quotes.exe	87
PID 4804 wrote to memory of 1556	4804	svchost.exe	88
PID 4804 wrote to memory of 1556	4804	svchost.exe	88
PID 4804 wrote to memory of 1556	4804	svchost.exe	88
PID 4804 wrote to memory of 1556	4804	svchost.exe	88
PID 4804 wrote to memory of 3412	4804	svchost.exe	89
PID 4804 wrote to memory of 3412	4804	svchost.exe	89
PID 4804 wrote to memory of 3412	4804	svchost.exe	89
PID 4804 wrote to memory of 3412	4804	svchost.exe	89
PID 4804 wrote to memory of 2212	4804	svchost.exe	90
PID 4804 wrote to memory of 2212	4804	svchost.exe	90
PID 4804 wrote to memory of 2212	4804	svchost.exe	90
PID 4804 wrote to memory of 3596	4804	svchost.exe	91
PID 4804 wrote to memory of 3596	4804	svchost.exe	91
PID 4804 wrote to memory of 3596	4804	svchost.exe	91
PID 4804 wrote to memory of 3596	4804	svchost.exe	91

C:\Users\Admin\AppData\Local\Temp\Quote.exe
"C:\Users\Admin\AppData\Local\Temp\Quote.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Users\Admin\AppData\Local\directory\Quotes.exe
  "C:\Users\Admin\AppData\Local\Temp\Quote.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1800
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\Quote.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4804
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\xiicfehirthpefdockpylwsvqh"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1556
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\hcvnfwskebzuplrsuuksojeezwoffk"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:3412
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\rwafgpdesjrhrznwdfxtzozvicyogveab"
      4⤵
      PID:2212
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\rwafgpdesjrhrznwdfxtzozvicyogveab"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\gfh\logs.dat

Filesize
144B

MD5
0ef086b2bf3a9fb8617359b6c117fc7d

SHA1
502582365a4044030e2cfc786672be73b44a0200

SHA256
fc8cde129f77e15ab27e65fe3850357c09b9d4dd82a5bf8af25f0a131ec7830d

SHA512
9d003e583443065919577cc7e696eee5a9180ad3d05263be5ae2266daba517044d01297add5edf4dbf8a86453beedd70379de4a7721bf32f8077dc46b1266717

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

Filesize
4KB

MD5
562a58578d6d04c7fb6bda581c57c03c

SHA1
12ab2b88624d01da0c5f5d1441aa21cbc276c5f5

SHA256
ff5c70287ba432a83f9015209d6e933462edca01d68c53c09882e1e4d22241c8

SHA512
3f6e19faa0196bd4c085defa587e664abdd63c25ef30df8f4323e60a5a5aca3cd2709466f772e64ab00fe331d4264841422d6057451947f3500e9252a132254e

Download Submit
C:\Users\Admin\AppData\Local\directory\Quotes.exe

Filesize
1.6MB

MD5
2e58a14f3a8d78298aee99cb4ea39adc

SHA1
90c96e8671f739a0a20daaafab1567d3c457a612

SHA256
83fd4f6c8ca4ae094ea629eda985b11e495aa8f6c8421970ef8573a50808e344

SHA512
71f115edb7c4013458f957473aa943a910d509f2a94b0ab6e57e84d13e458c17571702830a3eb7cf9e784e52ff1c986e35088a7ce7ab094c48f818d2a7fa6a5d

Download Submit
memory/1556-45-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1556-31-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1556-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1556-35-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1556-33-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1624-2-0x00000000041A0000-0x00000000045A0000-memory.dmp

Filesize
4.0MB

Download
memory/1800-10-0x00000000044D0000-0x00000000048D0000-memory.dmp

Filesize
4.0MB

Download
memory/3412-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3412-34-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3412-32-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3412-36-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3412-42-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3596-41-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3596-43-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3596-38-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4804-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-51-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4804-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-47-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4804-50-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4804-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4804-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download