remcos | 27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
14-11-2024 06:59

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General

Target

Customers_Technical_2D_Drawing-IMG.bat.exe
Size

1004KB
MD5

b55d24e6b8e053c08bdd57534af83734
SHA1

13473f286428aa39869a9580c7f3fbb0fde8d9ed
SHA256

27e9d8399b11830c69e45b1d2f37dbde869ff3ec1185ea640c209399fb1d737b
SHA512

1957bdfa97e1bd9309040f64d22c7348df0ca692f79a3136cb0203e19e5e4a67c5d8588e758f3e43a0652158a22042bd694635f0baaaa31c8d1c826432da8f22
SSDEEP

24576:99CJVyR2dzExjVlDjcFXcq5meyUBNrllwKkwa9:9UO2dCzmeeT/sS

Score

10^/10

remcos remotehost collection discovery execution rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

87.120.120.25:5940

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-13MD3U
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/668-52-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/276-48-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2296-47-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/276-48-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2296-47-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2368	powershell.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	Customers_Technical_2D_Drawing-IMG.bat.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3044 set thread context of 2512	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	35
PID 2512 set thread context of 2296	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	36
PID 2512 set thread context of 276	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	37
PID 2512 set thread context of 668	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	38

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 7 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	Customers_Technical_2D_Drawing-IMG.bat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Customers_Technical_2D_Drawing-IMG.bat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Customers_Technical_2D_Drawing-IMG.bat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Customers_Technical_2D_Drawing-IMG.bat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Customers_Technical_2D_Drawing-IMG.bat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
2736	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2368	powershell.exe
2296	Customers_Technical_2D_Drawing-IMG.bat.exe
2296	Customers_Technical_2D_Drawing-IMG.bat.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2512	Customers_Technical_2D_Drawing-IMG.bat.exe
2512	Customers_Technical_2D_Drawing-IMG.bat.exe
2512	Customers_Technical_2D_Drawing-IMG.bat.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	powershell.exe
Token: SeDebugPrivilege	668	Customers_Technical_2D_Drawing-IMG.bat.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2512	Customers_Technical_2D_Drawing-IMG.bat.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2368	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	31
PID 3044 wrote to memory of 2368	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	31
PID 3044 wrote to memory of 2368	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	31
PID 3044 wrote to memory of 2368	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	31
PID 3044 wrote to memory of 2736	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	33
PID 3044 wrote to memory of 2736	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	33
PID 3044 wrote to memory of 2736	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	33
PID 3044 wrote to memory of 2736	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	33
PID 3044 wrote to memory of 2512	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	35
PID 3044 wrote to memory of 2512	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	35
PID 3044 wrote to memory of 2512	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	35
PID 3044 wrote to memory of 2512	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	35
PID 3044 wrote to memory of 2512	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	35
PID 3044 wrote to memory of 2512	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	35
PID 3044 wrote to memory of 2512	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	35
PID 3044 wrote to memory of 2512	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	35
PID 3044 wrote to memory of 2512	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	35
PID 3044 wrote to memory of 2512	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	35
PID 3044 wrote to memory of 2512	3044	Customers_Technical_2D_Drawing-IMG.bat.exe	35
PID 2512 wrote to memory of 2296	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	36
PID 2512 wrote to memory of 2296	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	36
PID 2512 wrote to memory of 2296	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	36
PID 2512 wrote to memory of 2296	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	36
PID 2512 wrote to memory of 2296	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	36
PID 2512 wrote to memory of 276	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	37
PID 2512 wrote to memory of 276	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	37
PID 2512 wrote to memory of 276	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	37
PID 2512 wrote to memory of 276	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	37
PID 2512 wrote to memory of 276	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	37
PID 2512 wrote to memory of 668	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	38
PID 2512 wrote to memory of 668	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	38
PID 2512 wrote to memory of 668	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	38
PID 2512 wrote to memory of 668	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	38
PID 2512 wrote to memory of 668	2512	Customers_Technical_2D_Drawing-IMG.bat.exe	38

C:\Users\Admin\AppData\Local\Temp\Customers_Technical_2D_Drawing-IMG.bat.exe
"C:\Users\Admin\AppData\Local\Temp\Customers_Technical_2D_Drawing-IMG.bat.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QglnNavO.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2368
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QglnNavO" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFBBD.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2736
- C:\Users\Admin\AppData\Local\Temp\Customers_Technical_2D_Drawing-IMG.bat.exe
  "C:\Users\Admin\AppData\Local\Temp\Customers_Technical_2D_Drawing-IMG.bat.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2512
- - C:\Users\Admin\AppData\Local\Temp\Customers_Technical_2D_Drawing-IMG.bat.exe
    C:\Users\Admin\AppData\Local\Temp\Customers_Technical_2D_Drawing-IMG.bat.exe /stext "C:\Users\Admin\AppData\Local\Temp\nagqavdqegyevzwlqlngktfnucuwy"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2296
- - C:\Users\Admin\AppData\Local\Temp\Customers_Technical_2D_Drawing-IMG.bat.exe
    C:\Users\Admin\AppData\Local\Temp\Customers_Technical_2D_Drawing-IMG.bat.exe /stext "C:\Users\Admin\AppData\Local\Temp\xuujaoojsoqrxfkpzvaingrwvimfrzke"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:276
- - C:\Users\Admin\AppData\Local\Temp\Customers_Technical_2D_Drawing-IMG.bat.exe
    C:\Users\Admin\AppData\Local\Temp\Customers_Technical_2D_Drawing-IMG.bat.exe /stext "C:\Users\Admin\AppData\Local\Temp\aozt"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:668

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

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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 Information Discovery

T1082

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
7d94ef79e2936659728853a439a29b58

SHA1
b53f175b1f84a8b3209315dac6856157cbbf366e

SHA256
a74ca819a44d9156a2308ca6896912148e2636066e935e26b852af94ae4cf1fa

SHA512
a1edee0169d34a90aee7754bad9863a09f421fc88e3bf8d6db67d24532259387184f133cff617e9e5cabb2ed514fd2f1c9928f24bac9ae7d8ce739690c21e052

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpFBBD.tmp

Filesize
1KB

MD5
d15f0e3a6f538d1f4e00690babebab1a

SHA1
321bb254c182c4eaab755fc8dcee327f357ee851

SHA256
bbd154ff83b3ce043341053dd5c2765630211a48400332109d06b0ae10a0da0a

SHA512
8843c99012ddf56dfbcd6b54637f7b7b212860ec509954365bd2052e5829c334b1a00ac89351d16b17da39ae895071b3b12680d5d8b1046923a7847885d97da8

Download Submit
memory/276-46-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/276-44-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/276-43-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/276-48-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/668-50-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/668-51-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/668-52-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2296-45-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2296-42-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2296-47-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2512-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-92-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-91-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-84-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-83-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-59-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2512-62-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2512-63-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2512-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2512-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3044-2-0x0000000074D80000-0x000000007546E000-memory.dmp

Filesize
6.9MB

Download
memory/3044-1-0x0000000000B00000-0x0000000000C02000-memory.dmp

Filesize
1.0MB

Download
memory/3044-3-0x0000000000250000-0x0000000000262000-memory.dmp

Filesize
72KB

Download
memory/3044-4-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

Filesize
4KB

Download
memory/3044-5-0x0000000074D80000-0x000000007546E000-memory.dmp

Filesize
6.9MB

Download
memory/3044-6-0x0000000005ED0000-0x0000000005F92000-memory.dmp

Filesize
776KB

Download
memory/3044-0-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

Filesize
4KB

Download
memory/3044-33-0x0000000074D80000-0x000000007546E000-memory.dmp

Filesize
6.9MB

Download