remcos | 673a717536312e14ce4541462f98c0a6252c2cbfa9b3271e8776b10067201b6f

Analysis

max time kernel
149s
max time network
129s
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 09:04

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General

Target

92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
Size

1.4MB
MD5

6a059d39861fe040d2ec45e74daacf34
SHA1

3023e95579019dffc86596db8e5fc27b2f574b65
SHA256

92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa
SHA512

654b1554789984c3fe0453a0afa7a8f078d78def8d9786b34d9f340452e37b6d880ac70fce3953a8744dce79a16bd6a0a4052b43aefc4727a46037e1885d6bf7
SSDEEP

24576:sqDEvCTbMWu7rQYlBQcBiT6rprG8a74RgPQ9QjPAZZJXjIc:sTvC/MTQYxsWR7a74RgPQ9QjeZJ

Score

10^/10

remcos remotehost collection credential_access discovery rat stealer

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 7 IoCs

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

resource	yara_rule
behavioral2/memory/1136-46-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2584-48-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/8-47-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2584-42-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/8-43-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2584-52-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/8-54-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2584-48-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2584-42-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2584-52-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/8-47-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/8-43-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/8-54-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 5072 set thread context of 3848	5072	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	91
PID 3848 set thread context of 8	3848	svchost.exe	94
PID 3848 set thread context of 2584	3848	svchost.exe	95
PID 3848 set thread context of 1136	3848	svchost.exe	96

System Location Discovery: System Language Discovery 1 TTPs 6 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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.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
8	svchost.exe
8	svchost.exe
1136	svchost.exe
1136	svchost.exe
8	svchost.exe
8	svchost.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
640	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
5072	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
3848	svchost.exe
3848	svchost.exe
3848	svchost.exe
3848	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1136	svchost.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
640	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
640	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
5072	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
5072	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
640	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
640	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
5072	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
5072	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 4824	640	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	89
PID 640 wrote to memory of 4824	640	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	89
PID 640 wrote to memory of 4824	640	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	89
PID 640 wrote to memory of 5072	640	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	90
PID 640 wrote to memory of 5072	640	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	90
PID 640 wrote to memory of 5072	640	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	90
PID 5072 wrote to memory of 3848	5072	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	91
PID 5072 wrote to memory of 3848	5072	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	91
PID 5072 wrote to memory of 3848	5072	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	91
PID 5072 wrote to memory of 3848	5072	92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe	91
PID 3848 wrote to memory of 4396	3848	svchost.exe	93
PID 3848 wrote to memory of 4396	3848	svchost.exe	93
PID 3848 wrote to memory of 4396	3848	svchost.exe	93
PID 3848 wrote to memory of 8	3848	svchost.exe	94
PID 3848 wrote to memory of 8	3848	svchost.exe	94
PID 3848 wrote to memory of 8	3848	svchost.exe	94
PID 3848 wrote to memory of 8	3848	svchost.exe	94
PID 3848 wrote to memory of 2584	3848	svchost.exe	95
PID 3848 wrote to memory of 2584	3848	svchost.exe	95
PID 3848 wrote to memory of 2584	3848	svchost.exe	95
PID 3848 wrote to memory of 2584	3848	svchost.exe	95
PID 3848 wrote to memory of 1136	3848	svchost.exe	96
PID 3848 wrote to memory of 1136	3848	svchost.exe	96
PID 3848 wrote to memory of 1136	3848	svchost.exe	96
PID 3848 wrote to memory of 1136	3848	svchost.exe	96

C:\Users\Admin\AppData\Local\Temp\92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
"C:\Users\Admin\AppData\Local\Temp\92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:640
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe"
  2⤵
  PID:4824
- C:\Users\Admin\AppData\Local\Temp\92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe
  "C:\Users\Admin\AppData\Local\Temp\92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe"
  2⤵
  - 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:5072
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\92be4e60ffc8bcce4d34243d1c5ec0f70c8059504d6466248ceeb8d0dde01afa.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:3848
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\actmihdtaujlhc"
      4⤵
      PID:4396
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\actmihdtaujlhc"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:8
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\leyfizouwcbqjqhfg"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:2584
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\vylxjszokktvtwvjpjxkz"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1136

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

Replay Monitor

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Downloads

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

Filesize
4KB

MD5
15e28d82a9ee8a45c10bcf671fef0362

SHA1
2b126b086a1191cb8b4d444e87781358d51af3a4

SHA256
012fbb5f15d52a9560cf0e77fd36837ec2c56aff7a989d31c3d40d4f6df6cf9d

SHA512
3dd749523858a54e7e5ededba47d54715c9d5663dd0bd609363de7442436d1f0e924c5e4706e3ac413b79ddb6a18c796cc0ad166b4c87a3a7a6b009ba77fee82

Download Submit
C:\Users\Admin\AppData\Local\Temp\plainstones

Filesize
56KB

MD5
f969a47adac615cf9cb438d62d55fbed

SHA1
31bdfc9577643d77c9a4c48de9b527ac53662990

SHA256
1feb811c2b7a94ff724e5a503d85fd9505859a8dff97c1e83dbcea35aea1aef1

SHA512
2ba86629e78b601b9701c567a92e3f69b440f2e676696db354a657ea83282b1fc8db5913749f76c76f68cffdea2a9be50ec8e175e9072f03ddcdc3e3d9d97fe9

Download Submit
memory/8-43-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/8-54-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/8-40-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/8-36-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/8-47-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/640-10-0x0000000001810000-0x0000000001814000-memory.dmp

Filesize
16KB

Download
memory/1136-46-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1136-44-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1136-45-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2584-42-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2584-38-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2584-48-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2584-41-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2584-52-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3848-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-59-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3848-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-56-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3848-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-60-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3848-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3848-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download