remcos | f38a1d50e5d587e1c3137c63508f047e11d8309b1567b02d09ef3a6347858c82

Analysis

max time kernel
150s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
27/08/2024, 11:10

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General

Target

PH _Notice 2024.exe
Size

902KB
MD5

7d6b9e0d4738a86df4bc75415e19cbb6
SHA1

bf446491bd2315739a3da6136a52fb4ed89e3670
SHA256

925ea8530f0abbb424a082190c711b6b71461b39f36785c0183618ad69bcddca
SHA512

8278d6ab846228afe6e7c81b60f09affb2d3fb94e3105f86eccfd2ac07a3c8e5bde21fb55d672953479ec8a26d244596a98ebebb1e4809fc282786d773115996
SSDEEP

24576:qiUmSB/o5d1ubcv4vLIW+oJ850dSS3o0bokZxdrRV:q/mU/ohubcv40iQ0dvoIoerR

Score

10^/10

remcos remotehost collection credential_access discovery rat stealer upx

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

194.169.175.190:2404

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-LBZ2BK
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 9 IoCs

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

resource	yara_rule
behavioral2/memory/4776-42-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4776-44-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/5040-43-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4776-45-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/5040-41-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2200-40-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2200-36-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/5040-35-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2200-50-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/5040-43-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/5040-41-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/5040-35-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2200-40-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2200-36-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2200-50-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4752-0-0x0000000000900000-0x0000000000AEF000-memory.dmp	upx
behavioral2/memory/4752-16-0x0000000000900000-0x0000000000AEF000-memory.dmp	upx

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/4752-16-0x0000000000900000-0x0000000000AEF000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4752 set thread context of 3196	4752	PH _Notice 2024.exe	87
PID 3196 set thread context of 2200	3196	svchost.exe	98
PID 3196 set thread context of 5040	3196	svchost.exe	99
PID 3196 set thread context of 4776	3196	svchost.exe	100

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PH _Notice 2024.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
4776	svchost.exe
4776	svchost.exe
2200	svchost.exe
2200	svchost.exe
2200	svchost.exe
2200	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
4752	PH _Notice 2024.exe
3196	svchost.exe
3196	svchost.exe
3196	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4776	svchost.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
4752	PH _Notice 2024.exe
4752	PH _Notice 2024.exe
4752	PH _Notice 2024.exe
4752	PH _Notice 2024.exe
4752	PH _Notice 2024.exe
4752	PH _Notice 2024.exe
4752	PH _Notice 2024.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
4752	PH _Notice 2024.exe
4752	PH _Notice 2024.exe
4752	PH _Notice 2024.exe
4752	PH _Notice 2024.exe
4752	PH _Notice 2024.exe
4752	PH _Notice 2024.exe
4752	PH _Notice 2024.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4752 wrote to memory of 3196	4752	PH _Notice 2024.exe	87
PID 4752 wrote to memory of 3196	4752	PH _Notice 2024.exe	87
PID 4752 wrote to memory of 3196	4752	PH _Notice 2024.exe	87
PID 4752 wrote to memory of 3196	4752	PH _Notice 2024.exe	87
PID 3196 wrote to memory of 2200	3196	svchost.exe	98
PID 3196 wrote to memory of 2200	3196	svchost.exe	98
PID 3196 wrote to memory of 2200	3196	svchost.exe	98
PID 3196 wrote to memory of 2200	3196	svchost.exe	98
PID 3196 wrote to memory of 5040	3196	svchost.exe	99
PID 3196 wrote to memory of 5040	3196	svchost.exe	99
PID 3196 wrote to memory of 5040	3196	svchost.exe	99
PID 3196 wrote to memory of 5040	3196	svchost.exe	99
PID 3196 wrote to memory of 4776	3196	svchost.exe	100
PID 3196 wrote to memory of 4776	3196	svchost.exe	100
PID 3196 wrote to memory of 4776	3196	svchost.exe	100
PID 3196 wrote to memory of 4776	3196	svchost.exe	100

C:\Users\Admin\AppData\Local\Temp\PH _Notice 2024.exe
"C:\Users\Admin\AppData\Local\Temp\PH _Notice 2024.exe"
1⤵
- 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:4752
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\PH _Notice 2024.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3196
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\yfgrbbbvcsidoosoeqxmu"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2200
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\jzljculoqaaqyvhanbsfxqoh"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:5040
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\lbyudmwqejtvbjdeelfhidiymze"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4776

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

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
4KB

MD5
18db1829b27eaeed163c211f5d179d72

SHA1
4442332494cba1e012f8876ecac42126ba995bc6

SHA256
610c5ee3f0e63441521d26bc477c9618a4c5f86e93d31b31890680c69e3ecc3d

SHA512
123d68b2c84f7a52d15faa212c06f33b04a55585e2aeb16bb14df95b18c0bcf31933e5bf0c736c90bc054b9527fccb046540d3302a0f149ebeed7c6bcca0b986

Download Submit
memory/2200-29-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2200-50-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2200-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2200-36-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2200-40-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3196-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-56-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3196-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-55-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3196-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3196-52-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3196-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4752-0-0x0000000000900000-0x0000000000AEF000-memory.dmp

Filesize
1.9MB

Download
memory/4752-12-0x0000000004580000-0x0000000004584000-memory.dmp

Filesize
16KB

Download
memory/4752-16-0x0000000000900000-0x0000000000AEF000-memory.dmp

Filesize
1.9MB

Download
memory/4776-45-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4776-42-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4776-37-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4776-39-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4776-44-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5040-35-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5040-43-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5040-41-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5040-34-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5040-31-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download