remcos | 36609ed28222d995170a36e1d4df63fcf518bece4a965e5674cc5a03c2d2b324

Analysis

max time kernel
148s
max time network
146s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
31/07/2024, 10:30

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General

Target
SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe
Size 919KB
Sample240731-mjtfqsshjf
SHA256 36609ed28222d995170a36e1d4df63fcf518bece4a965e5674cc5a03c2d2b324
MD5 e433558ced9cd543207bd7bc7da5b361
SHA1 3db2833a506acf05d379b603e54d7e7bf9facd5f
SHA512 0dbe901e0d78b7e0e6b7675eefba3af267730a53b9bf7f9c89804dd41ee84504b216f966bcfea3ed0a6fc61ff5ab01ba09773700fa0f806067a277d1f57b4368
SSDEEP 24576:oVMCt5BT8pwLmRa8wN/2Gc7dOxFF3VTNrRjdCq:iMCtowDXBcBOTJRNRdh
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos yenom collection credential_access discovery execution rat stealer

Malware Config

Extracted

Family

remcos

Botnet

Yenom

remremc.duckdns.org:57155

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
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-V6SI6Q
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 3 IoCs

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

resource	yara_rule
behavioral1/memory/1328-60-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2320-56-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1984-61-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1984-61-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2320-56-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2300	powershell.exe
2860	powershell.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	vbc.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2528 set thread context of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2840 set thread context of 2320	2840	vbc.exe	38
PID 2840 set thread context of 1984	2840	vbc.exe	40
PID 2840 set thread context of 1328	2840	vbc.exe	41

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 8 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	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe
2300	powershell.exe
2860	powershell.exe
2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe
2320	vbc.exe
2320	vbc.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2840	vbc.exe
2840	vbc.exe
2840	vbc.exe
2840	vbc.exe
2840	vbc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe
Token: SeDebugPrivilege	2300	powershell.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	1328	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2840	vbc.exe

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 2300	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	29
PID 2528 wrote to memory of 2300	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	29
PID 2528 wrote to memory of 2300	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	29
PID 2528 wrote to memory of 2300	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	29
PID 2528 wrote to memory of 2860	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	31
PID 2528 wrote to memory of 2860	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	31
PID 2528 wrote to memory of 2860	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	31
PID 2528 wrote to memory of 2860	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	31
PID 2528 wrote to memory of 2764	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	32
PID 2528 wrote to memory of 2764	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	32
PID 2528 wrote to memory of 2764	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	32
PID 2528 wrote to memory of 2764	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	32
PID 2528 wrote to memory of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2528 wrote to memory of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2528 wrote to memory of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2528 wrote to memory of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2528 wrote to memory of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2528 wrote to memory of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2528 wrote to memory of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2528 wrote to memory of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2528 wrote to memory of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2528 wrote to memory of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2528 wrote to memory of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2528 wrote to memory of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2528 wrote to memory of 2840	2528	SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe	35
PID 2840 wrote to memory of 340	2840	vbc.exe	37
PID 2840 wrote to memory of 340	2840	vbc.exe	37
PID 2840 wrote to memory of 340	2840	vbc.exe	37
PID 2840 wrote to memory of 340	2840	vbc.exe	37
PID 2840 wrote to memory of 2320	2840	vbc.exe	38
PID 2840 wrote to memory of 2320	2840	vbc.exe	38
PID 2840 wrote to memory of 2320	2840	vbc.exe	38
PID 2840 wrote to memory of 2320	2840	vbc.exe	38
PID 2840 wrote to memory of 2320	2840	vbc.exe	38
PID 2840 wrote to memory of 2520	2840	vbc.exe	39
PID 2840 wrote to memory of 2520	2840	vbc.exe	39
PID 2840 wrote to memory of 2520	2840	vbc.exe	39
PID 2840 wrote to memory of 2520	2840	vbc.exe	39
PID 2840 wrote to memory of 1984	2840	vbc.exe	40
PID 2840 wrote to memory of 1984	2840	vbc.exe	40
PID 2840 wrote to memory of 1984	2840	vbc.exe	40
PID 2840 wrote to memory of 1984	2840	vbc.exe	40
PID 2840 wrote to memory of 1984	2840	vbc.exe	40
PID 2840 wrote to memory of 1328	2840	vbc.exe	41
PID 2840 wrote to memory of 1328	2840	vbc.exe	41
PID 2840 wrote to memory of 1328	2840	vbc.exe	41
PID 2840 wrote to memory of 1328	2840	vbc.exe	41
PID 2840 wrote to memory of 1328	2840	vbc.exe	41

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.24212.14364.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2300
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\jRassxvCmuR.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2860
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jRassxvCmuR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp74D2.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2764
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2840
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\xcexfaezzelapglncydvgdjtbeq"
    3⤵
    PID:340
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\xcexfaezzelapglncydvgdjtbeq"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2320
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\hwrqgsobnmdnrmzzuiyxjqekjlajsx"
    3⤵
    PID:2520
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\hwrqgsobnmdnrmzzuiyxjqekjlajsx"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:1984
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\rzxizlzvbuvscanddllquvrtszsslirwm"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:1328

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Scripting

T1064

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Scripting

T1064

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Discovery

System Information Discovery

T1082

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

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 144B
SHA256 b57d6989e726456847397807cdce9267f58a64e06fd72123cd60919781b26a2c
MD5 bd67bf789859cb4bcc52f41fd7652035
SHA1 d8a5f734208ed1a2562deee15c193cfbd578a637
SHA512 283de9c3639a44e5b52929ad6c92be1072ec083e842d4277bec76fd25bb9a615792bb372f5bfff8aa0eeec812c5157ae9f6d164eb6efa195e945b53b952967ea
MD5 SHA1 SHA512

Submit Download

tmp74D2.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp74D2.tmp
Size 1KB
SHA256 744ceacacbd3f9a78bf18242fe8ad84fc6d62dc82992ef303d5f4ca8f47b7bdd
MD5 aac1a6943a3b74655d575d74d194836a
SHA1 9506a871a842acf84abc8f59e99a9e58de771292
SHA512 9d57d4d44d2fac36740c5e36f315fb47a77e2a7b486d7b3ec86a47958b2ee6382aba3eef730bdccd862906b002b2634729a4c5b7c72fae78d69ccea73cfea86a
MD5 SHA1 SHA512

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xcexfaezzelapglncydvgdjtbeq

Path C:\Users\Admin\AppData\Local\Temp\xcexfaezzelapglncydvgdjtbeq
Size 2B
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
MD5 SHA1 SHA512

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JOFY9SPHXXIOE7OHKHUO.temp

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\JOFY9SPHXXIOE7OHKHUO.temp
Size 7KB
SHA256 5ec9c0a5b1bd3ea88e9a555ff0a30505743b2c7aa7bd9795d752ebfaac409cb0
MD5 cb66089b5ff45547917792bbcdf7c6be
SHA1 273272b6bffe15bb6bd2686a98e22f0acd2ba820
SHA512 897dfd234337aa6d3c9d2663b443e5f8cba3cdb177555c32a2384c376645dac608bdcca74d1b71e2a3e9e906b8b1fa350a930573301e148c9e2d084fcf72605f
SSDEEP 96:gJaCweM8JnqvsqvJCwo5JaCweM8JnqvsEHyqvJCworL9XWQHYf7urXlUVc3l:QP9UoHP9AHnorLEFf7urL
MD5 SHA1 SHA512 SSDEEP

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memory/1328-57-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

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memory/1328-60-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1328-59-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1328-58-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1984-61-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/1984-55-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/1984-54-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2320-51-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2320-56-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2320-52-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2528-5-0x0000000004E80000-0x0000000004F40000-memory.dmp

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memory/2528-41-0x0000000074BC0000-0x00000000752AE000-memory.dmp

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memory/2528-0-0x0000000074BCE000-0x0000000074BCF000-memory.dmp

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memory/2528-4-0x0000000000700000-0x000000000070E000-memory.dmp

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memory/2528-3-0x00000000006A0000-0x00000000006B6000-memory.dmp

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memory/2528-2-0x0000000074BC0000-0x00000000752AE000-memory.dmp

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memory/2528-1-0x00000000003A0000-0x000000000048C000-memory.dmp

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memory/2840-35-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-34-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

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memory/2840-43-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-44-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-45-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-46-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-48-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-20-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-24-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-18-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-40-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-22-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-26-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-28-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-32-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-42-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-37-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-36-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-68-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/2840-71-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/2840-72-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/2840-73-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-31-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-78-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-79-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-86-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-87-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-94-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-95-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/2840-102-0x0000000000400000-0x0000000000482000-memory.dmp

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