remcos | 5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef

Analysis

max time kernel
149s
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
02-09-2024 09:06

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General

Target

5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
Size

1017KB
MD5

b61864f46e2dd1aa7a629eb85f08be33
SHA1

99048df6b97319f0d6293309b71d1ffafc8bf269
SHA256

5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef
SHA512

5a6607351724208aed4bbcd38d0114723131e331c1d50c4b43cb749628e836634d9c7d4b5e82d1261e6518723236d6bf91ddf32ab49af606b2d43878e55b4e8e
SSDEEP

24576:U4OR7Cs7VTj7e9pb1icG+hiNT4TrAgPdiRFcpFUQ:471yb1IxsA4d0yFp

Score

10^/10

remcos remotehost collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

127.0.0.1:2404

67.207.161.204:2404

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
remcos
mouse_option
false
mutex
Rmc-ZA03K9
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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Detected Nirsoft tools 6 IoCs

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

resource	yara_rule
behavioral2/memory/2712-34-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2712-38-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2712-36-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3440-35-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3440-33-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3440-43-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2712-34-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2712-38-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2712-36-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3440-35-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3440-33-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3440-43-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Reads user/profile data of web browsers 2 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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1616 set thread context of 3900	1616	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	93
PID 3900 set thread context of 3440	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	94
PID 3900 set thread context of 2712	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	95
PID 3900 set thread context of 4548	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	97

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3196	4548	WerFault.exe	97

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	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3440	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
3440	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
3440	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
3440	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
4548	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1616 wrote to memory of 3900	1616	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	93
PID 1616 wrote to memory of 3900	1616	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	93
PID 1616 wrote to memory of 3900	1616	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	93
PID 1616 wrote to memory of 3900	1616	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	93
PID 1616 wrote to memory of 3900	1616	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	93
PID 1616 wrote to memory of 3900	1616	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	93
PID 1616 wrote to memory of 3900	1616	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	93
PID 1616 wrote to memory of 3900	1616	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	93
PID 1616 wrote to memory of 3900	1616	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	93
PID 1616 wrote to memory of 3900	1616	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	93
PID 1616 wrote to memory of 3900	1616	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	93
PID 1616 wrote to memory of 3900	1616	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	93
PID 3900 wrote to memory of 3440	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	94
PID 3900 wrote to memory of 3440	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	94
PID 3900 wrote to memory of 3440	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	94
PID 3900 wrote to memory of 3440	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	94
PID 3900 wrote to memory of 2712	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	95
PID 3900 wrote to memory of 2712	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	95
PID 3900 wrote to memory of 2712	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	95
PID 3900 wrote to memory of 2712	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	95
PID 3900 wrote to memory of 2260	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	96
PID 3900 wrote to memory of 2260	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	96
PID 3900 wrote to memory of 2260	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	96
PID 3900 wrote to memory of 4548	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	97
PID 3900 wrote to memory of 4548	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	97
PID 3900 wrote to memory of 4548	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	97
PID 3900 wrote to memory of 4548	3900	5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe	97

C:\Users\Admin\AppData\Local\Temp\5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
"C:\Users\Admin\AppData\Local\Temp\5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1616
- C:\Users\Admin\AppData\Local\Temp\5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
  "C:\Users\Admin\AppData\Local\Temp\5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3900
- - C:\Users\Admin\AppData\Local\Temp\5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
    C:\Users\Admin\AppData\Local\Temp\5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe /stext "C:\Users\Admin\AppData\Local\Temp\wvncyhojjtrev"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:3440
- - C:\Users\Admin\AppData\Local\Temp\5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
    C:\Users\Admin\AppData\Local\Temp\5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe /stext "C:\Users\Admin\AppData\Local\Temp\gpsmzzzlxbjjypvf"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2712
- - C:\Users\Admin\AppData\Local\Temp\5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
    C:\Users\Admin\AppData\Local\Temp\5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe /stext "C:\Users\Admin\AppData\Local\Temp\jkgfasjeljboivjjtqa"
    3⤵
    PID:2260
- - C:\Users\Admin\AppData\Local\Temp\5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe
    C:\Users\Admin\AppData\Local\Temp\5868bd786a53297dfb2265f5f00d55cdc21ab25aa803acd288a39d59507d25ef.exe /stext "C:\Users\Admin\AppData\Local\Temp\jkgfasjeljboivjjtqa"
    3⤵
    - Suspicious use of UnmapMainImage
    PID:4548
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 12
      4⤵
      Program crash
      PID:3196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4548 -ip 4548
1⤵
PID:3232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

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

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Downloads

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

Filesize
4KB

MD5
1891919175c888ce82e9bd8a047b01ad

SHA1
502a6892a5d27ecb791ac5aa6d8586944f540453

SHA256
a6c43b4e4b8681cf0ef56c49c730fa77e34dc82db0260253a3ba75039030b9ec

SHA512
8bb940050b1abf6c27db133ed446f41e108f670f361ed5102408832ce33d9b87cd0880723441f1632292eeeb0a319c4e0fac0ea659eb55ebe1130cc3e6c776a3

Download Submit
memory/1616-10-0x0000000006630000-0x00000000066CC000-memory.dmp

Filesize
624KB

Download
memory/1616-3-0x0000000005200000-0x0000000005292000-memory.dmp

Filesize
584KB

Download
memory/1616-0-0x00000000744DE000-0x00000000744DF000-memory.dmp

Filesize
4KB

Download
memory/1616-4-0x0000000005390000-0x000000000539A000-memory.dmp

Filesize
40KB

Download
memory/1616-5-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/1616-6-0x0000000007F40000-0x0000000007F58000-memory.dmp

Filesize
96KB

Download
memory/1616-7-0x00000000744DE000-0x00000000744DF000-memory.dmp

Filesize
4KB

Download
memory/1616-8-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/1616-1-0x00000000006F0000-0x00000000007F4000-memory.dmp

Filesize
1.0MB

Download
memory/1616-18-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/1616-9-0x0000000006360000-0x0000000006420000-memory.dmp

Filesize
768KB

Download
memory/1616-2-0x00000000057B0000-0x0000000005D54000-memory.dmp

Filesize
5.6MB

Download
memory/2712-34-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2712-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2712-32-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2712-36-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2712-38-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3440-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3440-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3440-33-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3440-35-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3440-43-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3900-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-46-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3900-50-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3900-49-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3900-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3900-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4548-37-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download