remcos | 14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c

Analysis

max time kernel
148s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
14-09-2024 01:08

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General

Target

14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.exe
Size

1.4MB
MD5

c9d77c591e284d81a87f54e086515333
SHA1

e69f9859addc81b99703f7bc33fc9680df3b6d43
SHA256

14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c
SHA512

f4e5dc9c699d3a93155097ec71419f74c22e5cb96a83f55e0007c81ab93c751631d77462959c2385950d41b2ed43c19f71702c201c8ab412e721bbe76acd668b
SSDEEP

24576:CCdxte/80jYLT3U1jfsWaAK+UbJKRWeSR813Cih0NhTIDiQ:Tw80cTsjkWaAK+UtrRU3uu

Score

10^/10

remcos remotehost collection credential_access discovery rat stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

blakaa.duckdns.org: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-BNY62M
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 8 IoCs

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

resource	yara_rule
behavioral2/memory/4660-31-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3228-34-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3228-33-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4324-32-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3228-30-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4324-29-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4660-28-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4324-39-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4660-31-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4660-28-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4324-32-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4324-29-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4324-39-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3820 set thread context of 4912	3820	14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.exe	86
PID 4912 set thread context of 4324	4912	svchost.exe	95
PID 4912 set thread context of 4660	4912	svchost.exe	96
PID 4912 set thread context of 3228	4912	svchost.exe	97

Program crash 1 IoCs

pid	pid_target	Process	procid_target
740	3820	WerFault.exe	82

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	14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.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
4324	svchost.exe
4324	svchost.exe
3228	svchost.exe
3228	svchost.exe
4324	svchost.exe
4324	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
3820	14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.exe
4912	svchost.exe
4912	svchost.exe
4912	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3228	svchost.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3820	14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.exe
3820	14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3820	14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.exe
3820	14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3820 wrote to memory of 4912	3820	14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.exe	86
PID 3820 wrote to memory of 4912	3820	14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.exe	86
PID 3820 wrote to memory of 4912	3820	14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.exe	86
PID 3820 wrote to memory of 4912	3820	14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.exe	86
PID 4912 wrote to memory of 4324	4912	svchost.exe	95
PID 4912 wrote to memory of 4324	4912	svchost.exe	95
PID 4912 wrote to memory of 4324	4912	svchost.exe	95
PID 4912 wrote to memory of 4324	4912	svchost.exe	95
PID 4912 wrote to memory of 4660	4912	svchost.exe	96
PID 4912 wrote to memory of 4660	4912	svchost.exe	96
PID 4912 wrote to memory of 4660	4912	svchost.exe	96
PID 4912 wrote to memory of 4660	4912	svchost.exe	96
PID 4912 wrote to memory of 3228	4912	svchost.exe	97
PID 4912 wrote to memory of 3228	4912	svchost.exe	97
PID 4912 wrote to memory of 3228	4912	svchost.exe	97
PID 4912 wrote to memory of 3228	4912	svchost.exe	97

C:\Users\Admin\AppData\Local\Temp\14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.exe
"C:\Users\Admin\AppData\Local\Temp\14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.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:3820
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\14534f9ecea0edc1d5fd9a220089cdd04dba9a8cf5b70334c5b15e6ad0a4860c.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4912
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\desyzukzuldsfsn"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:4324
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\ggyqanvbqtvxpybdgq"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:4660
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\qadbafguecnkrexhxtqpv"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3820 -s 648
  2⤵
  - Program crash
  PID:740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3820 -ip 3820
1⤵
PID:1832

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\desyzukzuldsfsn

Filesize
4KB

MD5
2538ec9e8425a905937573069b77d4c2

SHA1
ad0c2b7aff4382e23444d26adac96d9697b849f3

SHA256
29338949fae4c88a972837aae898529e4c7a2c4df35982eef2f8d7b602c17f4e

SHA512
a867a471b837b9c662528ee7a5904e8fe7b1eebb277b8a7fe4d4caf423fae914baf692bb5004c02ddb539b157d63326178467e28b03aa92a533cda19155d501c

Download Submit
memory/3228-30-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3228-34-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3228-22-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3228-26-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3228-33-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3820-6-0x0000000001080000-0x0000000001480000-memory.dmp

Filesize
4.0MB

Download
memory/4324-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4324-39-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4324-29-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4324-19-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4324-25-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4660-28-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4660-27-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4660-21-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4660-31-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4912-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-45-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4912-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-10-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-9-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-8-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-7-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-41-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4912-44-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4912-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4912-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download