remcos | 6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32

Analysis

max time kernel
149s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01-09-2024 01:20

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General

Target

6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
Size

971KB
MD5

212068494b9a5e0238568a842da660da
SHA1

880afab8133a3b62a4e1d87f94bcef846846f024
SHA256

6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32
SHA512

afd63a289f8c1a5ac2b1ade03c6db1f5a6cc6efa8ddc8c33a7559c699d97df09a00cfff87d366065f39a13643efe0e37bf0049a021c4ec51e27b91f30d6dcaf1
SSDEEP

24576:dBrYKjLhvej6aV9b7w6tt6nWHdCgjuf+lBqA:dZLh+6ac6ttfH3KSq

Score

10^/10

remcos remotehost collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

103.161.133.245:9898

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-LN5NIY
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/1936-34-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1936-39-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1052-43-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1936-44-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3636-38-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1052-37-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3636-33-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1052-45-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3636-47-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1052-43-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1052-37-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1052-45-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3636-38-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3636-33-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3636-47-0x0000000000400000-0x0000000000478000-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-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4408 set thread context of 3016	4408	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	95
PID 3016 set thread context of 3636	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	96
PID 3016 set thread context of 1052	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	98
PID 3016 set thread context of 1936	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	99

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	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3636	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
3636	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
1936	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
1936	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
3636	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
3636	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1936	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 4408 wrote to memory of 3016	4408	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	95
PID 4408 wrote to memory of 3016	4408	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	95
PID 4408 wrote to memory of 3016	4408	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	95
PID 4408 wrote to memory of 3016	4408	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	95
PID 4408 wrote to memory of 3016	4408	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	95
PID 4408 wrote to memory of 3016	4408	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	95
PID 4408 wrote to memory of 3016	4408	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	95
PID 4408 wrote to memory of 3016	4408	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	95
PID 4408 wrote to memory of 3016	4408	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	95
PID 4408 wrote to memory of 3016	4408	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	95
PID 4408 wrote to memory of 3016	4408	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	95
PID 4408 wrote to memory of 3016	4408	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	95
PID 3016 wrote to memory of 3636	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	96
PID 3016 wrote to memory of 3636	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	96
PID 3016 wrote to memory of 3636	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	96
PID 3016 wrote to memory of 3636	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	96
PID 3016 wrote to memory of 3276	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	97
PID 3016 wrote to memory of 3276	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	97
PID 3016 wrote to memory of 3276	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	97
PID 3016 wrote to memory of 1052	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	98
PID 3016 wrote to memory of 1052	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	98
PID 3016 wrote to memory of 1052	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	98
PID 3016 wrote to memory of 1052	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	98
PID 3016 wrote to memory of 1936	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	99
PID 3016 wrote to memory of 1936	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	99
PID 3016 wrote to memory of 1936	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	99
PID 3016 wrote to memory of 1936	3016	6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe	99

C:\Users\Admin\AppData\Local\Temp\6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
"C:\Users\Admin\AppData\Local\Temp\6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Users\Admin\AppData\Local\Temp\6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
  "C:\Users\Admin\AppData\Local\Temp\6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3016
- - C:\Users\Admin\AppData\Local\Temp\6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
    C:\Users\Admin\AppData\Local\Temp\6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe /stext "C:\Users\Admin\AppData\Local\Temp\nbkbrkrkjxk"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:3636
- - C:\Users\Admin\AppData\Local\Temp\6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
    C:\Users\Admin\AppData\Local\Temp\6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe /stext "C:\Users\Admin\AppData\Local\Temp\pextjdclxfcisar"
    3⤵
    PID:3276
- - C:\Users\Admin\AppData\Local\Temp\6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
    C:\Users\Admin\AppData\Local\Temp\6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe /stext "C:\Users\Admin\AppData\Local\Temp\pextjdclxfcisar"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:1052
- - C:\Users\Admin\AppData\Local\Temp\6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe
    C:\Users\Admin\AppData\Local\Temp\6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe /stext "C:\Users\Admin\AppData\Local\Temp\aycekvmflnunupfivx"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1936

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

Replay Monitor

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Downloads

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

Filesize
4KB

MD5
c0ab2847671ed5375328c5127a02cc72

SHA1
dc2bcb51562fb17e5c8787833bc0181d88a5b75e

SHA256
e961f466a0638bc99182d0056245e2d8bf1ccc13a189b802aada981f379e2384

SHA512
0b8b634d21ac71e02cef86687bf84b6fcecfd24dafab8130f42ce8b4b3f308a2e1b1fa7bf8d37f2eda76efae2b30b8d39f41d808d771562d8545ed144241924f

Download Submit
memory/1052-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1052-45-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1052-36-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1052-37-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1052-43-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1936-30-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1936-32-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1936-44-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1936-39-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1936-34-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3016-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-53-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3016-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3016-52-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3016-49-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3636-33-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3636-47-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3636-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3636-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3636-38-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4408-6-0x0000000006AE0000-0x0000000006BC8000-memory.dmp

Filesize
928KB

Download
memory/4408-4-0x00000000053E0000-0x00000000053EA000-memory.dmp

Filesize
40KB

Download
memory/4408-5-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download
memory/4408-2-0x0000000005B50000-0x00000000060F4000-memory.dmp

Filesize
5.6MB

Download
memory/4408-3-0x00000000054D0000-0x0000000005562000-memory.dmp

Filesize
584KB

Download
memory/4408-7-0x0000000005690000-0x00000000056A8000-memory.dmp

Filesize
96KB

Download
memory/4408-8-0x0000000074B0E000-0x0000000074B0F000-memory.dmp

Filesize
4KB

Download
memory/4408-9-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download
memory/4408-10-0x0000000006600000-0x00000000066C0000-memory.dmp

Filesize
768KB

Download
memory/4408-11-0x0000000008F30000-0x0000000008FCC000-memory.dmp

Filesize
624KB

Download
memory/4408-1-0x00000000008F0000-0x00000000009E8000-memory.dmp

Filesize
992KB

Download
memory/4408-19-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download
memory/4408-0-0x0000000074B0E000-0x0000000074B0F000-memory.dmp

Filesize
4KB

Download