remcos | bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28-11-2024 19:18

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General

Target

bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
Size

660KB
MD5

5e1c814fc675448c381899d325aba145
SHA1

46a9e1b34f90d4be128fc1b6f1d698d79c93297b
SHA256

bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84
SHA512

ea3befc73db84c42834e59198f5dd416b738c33fd1105384ff87031205888a018da7d124582d25ed8a8cea8567ef07051d1ee6fa77fe4c4b74688bcaa1e88338
SSDEEP

12288:ORqeNjN24O1o46FW+iLOWIRKiKuI+v8nbDVJNtjzFwZnayIjYa9iXb8TOM:Ejoo7W+1WU2Y0nPVJNJlTYXYiM

Score

10^/10

remcos remotehost collection discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

mynewpro.online:2404

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-B4UZRV
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.

Processes:

resource	yara_rule
behavioral2/memory/1068-54-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4036-66-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4036-63-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1068-56-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3496-52-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3496-71-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/4036-66-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4036-63-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/3496-52-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3496-71-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Loads dropped DLL 2 IoCs

Processes:

bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

pid	Process
32	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
32	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Startup key = "C:\\Users\\Admin\\AppData\\Local\\Temp\\subfolder1\\Perissodactylic.scr"	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

pid	Process
4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exebf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

pid	Process
32	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exebf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

description	pid	Process	procid_target
PID 32 set thread context of 4804	32	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	91
PID 4804 set thread context of 3496	4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	98
PID 4804 set thread context of 4036	4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	99
PID 4804 set thread context of 1068	4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	100

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 5 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

Processes:

bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exebf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exebf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exebf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exebf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exebf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

pid	Process
3496	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
3496	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
1068	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
1068	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
3496	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
3496	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exebf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

pid	Process
32	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

description	pid	Process
Token: SeDebugPrivilege	1068	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exebf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe

description	pid	Process	procid_target
PID 32 wrote to memory of 4804	32	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	91
PID 32 wrote to memory of 4804	32	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	91
PID 32 wrote to memory of 4804	32	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	91
PID 32 wrote to memory of 4804	32	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	91
PID 32 wrote to memory of 4804	32	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	91
PID 4804 wrote to memory of 3496	4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	98
PID 4804 wrote to memory of 3496	4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	98
PID 4804 wrote to memory of 3496	4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	98
PID 4804 wrote to memory of 4036	4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	99
PID 4804 wrote to memory of 4036	4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	99
PID 4804 wrote to memory of 4036	4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	99
PID 4804 wrote to memory of 1068	4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	100
PID 4804 wrote to memory of 1068	4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	100
PID 4804 wrote to memory of 1068	4804	bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe	100

C:\Users\Admin\AppData\Local\Temp\bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
"C:\Users\Admin\AppData\Local\Temp\bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:32
- C:\Users\Admin\AppData\Local\Temp\bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
  "C:\Users\Admin\AppData\Local\Temp\bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4804
- - C:\Users\Admin\AppData\Local\Temp\bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
    C:\Users\Admin\AppData\Local\Temp\bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe /stext "C:\Users\Admin\AppData\Local\Temp\wosleersklnfahenvqpx"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:3496
- - C:\Users\Admin\AppData\Local\Temp\bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
    C:\Users\Admin\AppData\Local\Temp\bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe /stext "C:\Users\Admin\AppData\Local\Temp\gqyvxwctytfkcnarebkzroz"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:4036
- - C:\Users\Admin\AppData\Local\Temp\bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe
    C:\Users\Admin\AppData\Local\Temp\bf065b1f51eb32228108a6508ff649143a97526a06b27fa6771a85246b162f84.exe /stext "C:\Users\Admin\AppData\Local\Temp\rkdoypmnubxxmtovvmxautudfmu"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1068

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\BaConf.ini

Filesize
74B

MD5
d4d66db71f7a9cb8c9ed31779113a77f

SHA1
a9f0e41992f0c9e017d54269371379fa1e7cef15

SHA256
f8536748b100429ea636ac348f3f2594ddcffa753d459c5e40b7d5ce7b68f85b

SHA512
555fa7c5f51b8c5db53b275c6cfe613bffd60c7fa8089c80f9c70b93512d0172f58300749f8071670dc7f0d9813596086a25704f14909964771d49c17aeb9878

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsc7FE0.tmp\System.dll

Filesize
11KB

MD5
3e6bf00b3ac976122f982ae2aadb1c51

SHA1
caab188f7fdc84d3fdcb2922edeeb5ed576bd31d

SHA256
4ff9b2678d698677c5d9732678f9cf53f17290e09d053691aac4cc6e6f595cbe

SHA512
1286f05e6a7e6b691f6e479638e7179897598e171b52eb3a3dc0e830415251069d29416b6d1ffc6d7dce8da5625e1479be06db9b7179e7776659c5c1ad6aa706

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

Filesize
4KB

MD5
79f35c7500a5cc739c1974804710441f

SHA1
24fdf1fa45049fc1a83925c45357bc3058bad060

SHA256
897101ed9da25ab0f10e8ad1aeb8dabc3282ccfdb6d3171dbac758117b8731f4

SHA512
03281e8abecff4e7d1f563596a4fd2513e016b7fbf011a455141460f9448d00b4a4666d2036cb448a8ac9a6feebeb51b366289ffa2ee5524a062fe8869aec61e

Download Submit
memory/32-27-0x0000000077691000-0x00000000777B1000-memory.dmp

Filesize
1.1MB

Download
memory/32-28-0x0000000077691000-0x00000000777B1000-memory.dmp

Filesize
1.1MB

Download
memory/32-29-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/1068-53-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1068-50-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1068-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1068-54-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3496-43-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3496-49-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3496-48-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3496-71-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3496-52-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3496-47-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4036-62-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4036-66-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4036-63-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4036-46-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4804-76-0x0000000036840000-0x0000000036859000-memory.dmp

Filesize
100KB

Download
memory/4804-79-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4804-45-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4804-31-0x0000000077691000-0x00000000777B1000-memory.dmp

Filesize
1.1MB

Download
memory/4804-37-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4804-41-0x0000000077691000-0x00000000777B1000-memory.dmp

Filesize
1.1MB

Download
memory/4804-30-0x0000000077718000-0x0000000077719000-memory.dmp

Filesize
4KB

Download
memory/4804-73-0x0000000036840000-0x0000000036859000-memory.dmp

Filesize
100KB

Download
memory/4804-77-0x0000000036840000-0x0000000036859000-memory.dmp

Filesize
100KB

Download
memory/4804-65-0x0000000077691000-0x00000000777B1000-memory.dmp

Filesize
1.1MB

Download
memory/4804-78-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4804-33-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4804-80-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4804-81-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4804-82-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4804-83-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4804-84-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4804-85-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4804-86-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4804-87-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4804-88-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download