remcos | 5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
07/10/2022, 11:39

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General

Target
5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
Size 1.3MB
Sample221007-nr99wsccg3
SHA256 5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee
MD5 2eb993eae521117abeb184195490b57a
SHA1 7114649dc2116ff3ca020c05440464738c1ae13b
SHA512 c29f10d3317c3f6fa06df0d30a0c3e2272068fe9b5860411d909b090d69211b1bae0d79a5bd77a73844ba075a73cb6c604d06c5e28e2b144baa00f7e00f9f2f0
SSDEEP 24576:Sl1XSjildH84qAc/8jAx6SgXIWA8KB4iEkz/K3h2:S/NH84I/8jA1geB4R2g
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos new rem stub collection rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

NEW REM STUB

valvesco.duckdns.org:5050

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-48V73L
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/5116-147-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1936-150-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1936-151-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 4 IoCs

resource	yara_rule
behavioral2/memory/5116-147-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral2/memory/2428-148-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1936-150-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1936-151-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

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
T1081

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 5048 set thread context of 808	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	92
PID 808 set thread context of 1936	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	93
PID 808 set thread context of 5116	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	96
PID 808 set thread context of 2428	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	97

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
1936	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
1936	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
2428	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
2428	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
1936	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
1936	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
Token: SeDebugPrivilege	2428	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 808	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	92
PID 5048 wrote to memory of 808	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	92
PID 5048 wrote to memory of 808	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	92
PID 5048 wrote to memory of 808	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	92
PID 5048 wrote to memory of 808	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	92
PID 5048 wrote to memory of 808	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	92
PID 5048 wrote to memory of 808	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	92
PID 5048 wrote to memory of 808	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	92
PID 5048 wrote to memory of 808	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	92
PID 5048 wrote to memory of 808	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	92
PID 5048 wrote to memory of 808	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	92
PID 5048 wrote to memory of 808	5048	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	92
PID 808 wrote to memory of 1936	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	93
PID 808 wrote to memory of 1936	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	93
PID 808 wrote to memory of 1936	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	93
PID 808 wrote to memory of 1936	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	93
PID 808 wrote to memory of 4684	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	94
PID 808 wrote to memory of 4684	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	94
PID 808 wrote to memory of 4684	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	94
PID 808 wrote to memory of 2948	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	95
PID 808 wrote to memory of 2948	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	95
PID 808 wrote to memory of 2948	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	95
PID 808 wrote to memory of 5116	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	96
PID 808 wrote to memory of 5116	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	96
PID 808 wrote to memory of 5116	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	96
PID 808 wrote to memory of 5116	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	96
PID 808 wrote to memory of 2428	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	97
PID 808 wrote to memory of 2428	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	97
PID 808 wrote to memory of 2428	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	97
PID 808 wrote to memory of 2428	808	5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe	97

C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
"C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5048
- C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
  "C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:808
- - C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
    C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe /stext "C:\Users\Admin\AppData\Local\Temp\qeefvlk"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:1936
- - C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
    C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe /stext "C:\Users\Admin\AppData\Local\Temp\azkywevmne"
    3⤵
    PID:4684
- - C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
    C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe /stext "C:\Users\Admin\AppData\Local\Temp\azkywevmne"
    3⤵
    PID:2948
- - C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
    C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe /stext "C:\Users\Admin\AppData\Local\Temp\azkywevmne"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:5116
- - C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe
    C:\Users\Admin\AppData\Local\Temp\5542dd26db06cbc6b03f1323db7ff6792a69bcf3dcd6a6c978b91018c7f0a0ee.exe /stext "C:\Users\Admin\AppData\Local\Temp\lbxjxwggbmcfsy"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2428

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

qeefvlk

Path C:\Users\Admin\AppData\Local\Temp\qeefvlk
Size 4KB
SHA256 bd8156713974af3003c418302d3647fa84f62836fe83613c05e8bc40cb06a867
MD5 952a930b9fe70f809a67cb4e765c9448
SHA1 7e6c235246cc1be14d8a01ee7688a2a2471d44c9
SHA512 10d12f2412fd2cb9ecf47cccd0261b17d9a3323957602c06795c4b2244306837d0a979ec6e552dc023ee81719ebcb9455bdb6f9d44f07788664994d1498452fb
SSDEEP 48:wvvv0DxfvvcDxfdvv0DxBvv0Dxakvv0D7:mvWxvep1vWPvWbvW7
MD5 SHA1 SHA512 SSDEEP

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memory/808-141-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/808-153-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/808-149-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/808-139-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/808-140-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1936-151-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/1936-150-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2428-148-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/5048-137-0x0000000007B80000-0x0000000007BE6000-memory.dmp

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memory/5048-132-0x0000000000450000-0x00000000005A8000-memory.dmp

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memory/5048-136-0x0000000007870000-0x000000000790C000-memory.dmp

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memory/5048-135-0x0000000005010000-0x000000000501A000-memory.dmp

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memory/5048-134-0x0000000004F70000-0x0000000005002000-memory.dmp

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memory/5048-133-0x0000000005520000-0x0000000005AC4000-memory.dmp

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memory/5116-147-0x0000000000400000-0x0000000000457000-memory.dmp

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