remcos | 0b606f6d0ce44922bf456bee5e6e8acf1b343521b2d5d4c5838926cc0484e052

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
12-11-2024 10:13

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General

Target

HSG-IVN-2093456FIN.exe
Size

894KB
MD5

53b79ccad8bee5f9027601500616a975
SHA1

0f52c391a610e1d79d148dd70a4cd90c952dddae
SHA256

0b606f6d0ce44922bf456bee5e6e8acf1b343521b2d5d4c5838926cc0484e052
SHA512

5422ef61678dd02424492e1c02ae96e063f8a43713043560db3e3c788e899cb11bc5b8de9c4318f51491deb5bc4bb9ddfb6fa85eabc3c2f3322d17e0c9cc481b
SSDEEP

12288:260nsDt02aQqTSpqdtQxIUPXnohqsMtc18p1THM4yHXxKoO3XdgO6wSmv:21naampqdGTocsEcn467O3Xdgrk

Score

10^/10

remcos czt collection discovery execution rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

czt

aadavidron.duckdns.org:53848

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
Windeep.exe
copy_folder
AppDir
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-FS2BKT
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.

Processes:

resource	yara_rule
behavioral1/memory/1184-57-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2652-53-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2404-52-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/2404-52-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral1/memory/2652-53-0x0000000000400000-0x0000000000478000-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

Processes:

powershell.exepowershell.exe

pid	Process
2184	powershell.exe
2628	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

Processes:

HSG-IVN-2093456FIN.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	HSG-IVN-2093456FIN.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

HSG-IVN-2093456FIN.exeHSG-IVN-2093456FIN.exe

description	pid	Process	procid_target
PID 288 set thread context of 2864	288	HSG-IVN-2093456FIN.exe	36
PID 2864 set thread context of 2652	2864	HSG-IVN-2093456FIN.exe	37
PID 2864 set thread context of 2404	2864	HSG-IVN-2093456FIN.exe	38
PID 2864 set thread context of 1184	2864	HSG-IVN-2093456FIN.exe	39

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

Processes:

HSG-IVN-2093456FIN.exeHSG-IVN-2093456FIN.exeHSG-IVN-2093456FIN.exepowershell.exepowershell.exeschtasks.exeHSG-IVN-2093456FIN.exeHSG-IVN-2093456FIN.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HSG-IVN-2093456FIN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HSG-IVN-2093456FIN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HSG-IVN-2093456FIN.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	HSG-IVN-2093456FIN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HSG-IVN-2093456FIN.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

Processes:

schtasks.exe

pid	Process
2888	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exeHSG-IVN-2093456FIN.exe

pid	Process
2628	powershell.exe
2184	powershell.exe
2652	HSG-IVN-2093456FIN.exe
2652	HSG-IVN-2093456FIN.exe

Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

HSG-IVN-2093456FIN.exe

pid	Process
2864	HSG-IVN-2093456FIN.exe
2864	HSG-IVN-2093456FIN.exe
2864	HSG-IVN-2093456FIN.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exepowershell.exeHSG-IVN-2093456FIN.exe

description	pid	Process
Token: SeDebugPrivilege	2184	powershell.exe
Token: SeDebugPrivilege	2628	powershell.exe
Token: SeDebugPrivilege	1184	HSG-IVN-2093456FIN.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

HSG-IVN-2093456FIN.exe

pid	Process
2864	HSG-IVN-2093456FIN.exe

Suspicious use of WriteProcessMemory 38 IoCs

Processes:

HSG-IVN-2093456FIN.exeHSG-IVN-2093456FIN.exe

description	pid	Process	procid_target
PID 288 wrote to memory of 2184	288	HSG-IVN-2093456FIN.exe	30
PID 288 wrote to memory of 2184	288	HSG-IVN-2093456FIN.exe	30
PID 288 wrote to memory of 2184	288	HSG-IVN-2093456FIN.exe	30
PID 288 wrote to memory of 2184	288	HSG-IVN-2093456FIN.exe	30
PID 288 wrote to memory of 2628	288	HSG-IVN-2093456FIN.exe	32
PID 288 wrote to memory of 2628	288	HSG-IVN-2093456FIN.exe	32
PID 288 wrote to memory of 2628	288	HSG-IVN-2093456FIN.exe	32
PID 288 wrote to memory of 2628	288	HSG-IVN-2093456FIN.exe	32
PID 288 wrote to memory of 2888	288	HSG-IVN-2093456FIN.exe	34
PID 288 wrote to memory of 2888	288	HSG-IVN-2093456FIN.exe	34
PID 288 wrote to memory of 2888	288	HSG-IVN-2093456FIN.exe	34
PID 288 wrote to memory of 2888	288	HSG-IVN-2093456FIN.exe	34
PID 288 wrote to memory of 2864	288	HSG-IVN-2093456FIN.exe	36
PID 288 wrote to memory of 2864	288	HSG-IVN-2093456FIN.exe	36
PID 288 wrote to memory of 2864	288	HSG-IVN-2093456FIN.exe	36
PID 288 wrote to memory of 2864	288	HSG-IVN-2093456FIN.exe	36
PID 288 wrote to memory of 2864	288	HSG-IVN-2093456FIN.exe	36
PID 288 wrote to memory of 2864	288	HSG-IVN-2093456FIN.exe	36
PID 288 wrote to memory of 2864	288	HSG-IVN-2093456FIN.exe	36
PID 288 wrote to memory of 2864	288	HSG-IVN-2093456FIN.exe	36
PID 288 wrote to memory of 2864	288	HSG-IVN-2093456FIN.exe	36
PID 288 wrote to memory of 2864	288	HSG-IVN-2093456FIN.exe	36
PID 288 wrote to memory of 2864	288	HSG-IVN-2093456FIN.exe	36
PID 2864 wrote to memory of 2652	2864	HSG-IVN-2093456FIN.exe	37
PID 2864 wrote to memory of 2652	2864	HSG-IVN-2093456FIN.exe	37
PID 2864 wrote to memory of 2652	2864	HSG-IVN-2093456FIN.exe	37
PID 2864 wrote to memory of 2652	2864	HSG-IVN-2093456FIN.exe	37
PID 2864 wrote to memory of 2652	2864	HSG-IVN-2093456FIN.exe	37
PID 2864 wrote to memory of 2404	2864	HSG-IVN-2093456FIN.exe	38
PID 2864 wrote to memory of 2404	2864	HSG-IVN-2093456FIN.exe	38
PID 2864 wrote to memory of 2404	2864	HSG-IVN-2093456FIN.exe	38
PID 2864 wrote to memory of 2404	2864	HSG-IVN-2093456FIN.exe	38
PID 2864 wrote to memory of 2404	2864	HSG-IVN-2093456FIN.exe	38
PID 2864 wrote to memory of 1184	2864	HSG-IVN-2093456FIN.exe	39
PID 2864 wrote to memory of 1184	2864	HSG-IVN-2093456FIN.exe	39
PID 2864 wrote to memory of 1184	2864	HSG-IVN-2093456FIN.exe	39
PID 2864 wrote to memory of 1184	2864	HSG-IVN-2093456FIN.exe	39
PID 2864 wrote to memory of 1184	2864	HSG-IVN-2093456FIN.exe	39

C:\Users\Admin\AppData\Local\Temp\HSG-IVN-2093456FIN.exe
"C:\Users\Admin\AppData\Local\Temp\HSG-IVN-2093456FIN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:288
- 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\HSG-IVN-2093456FIN.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2184
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\VSNeHYIHmY.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2628
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VSNeHYIHmY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp841E.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2888
- C:\Users\Admin\AppData\Local\Temp\HSG-IVN-2093456FIN.exe
  "C:\Users\Admin\AppData\Local\Temp\HSG-IVN-2093456FIN.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2864
- - C:\Users\Admin\AppData\Local\Temp\HSG-IVN-2093456FIN.exe
    C:\Users\Admin\AppData\Local\Temp\HSG-IVN-2093456FIN.exe /stext "C:\Users\Admin\AppData\Local\Temp\runumanomfuvosjlhxjntgrsevwup"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2652
- - C:\Users\Admin\AppData\Local\Temp\HSG-IVN-2093456FIN.exe
    C:\Users\Admin\AppData\Local\Temp\HSG-IVN-2093456FIN.exe /stext "C:\Users\Admin\AppData\Local\Temp\cosmftyqanmayyxpziwpeklbncgdqyfu"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2404
- - C:\Users\Admin\AppData\Local\Temp\HSG-IVN-2093456FIN.exe
    C:\Users\Admin\AppData\Local\Temp\HSG-IVN-2093456FIN.exe /stext "C:\Users\Admin\AppData\Local\Temp\erxx"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:1184

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
930eb195d9c77299710560298a225aab

SHA1
84f9123d329ce6e8fef9dcd590fd09b6ddf0f4ab

SHA256
02fea4c8f625d96015e2e18825cba3b38b496920cd03be28ee098db1058baf0f

SHA512
ae687160c1467267bf9435ac19868f442d28705b132a0ef64481e707bce93a30d4bc0691c12e3509454aef661f876706382d7d8a5e5ce4b5f02f341b72b9a715

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp841E.tmp

Filesize
1KB

MD5
b958a5c8db9e473d6aae01b47b3ff860

SHA1
6542234c33d76d4a87fc66f24c41b95a33f84083

SHA256
72352efd51b1a3e3d9d223bf829a4d87153f1e60806b63316c66976353715287

SHA512
0ffc2133b9dc2569727b7a323cf401c701bbeba75cc83624f10de02d6e1204970f6f50c0c8e7b2751672a34994a19a2027c3c6bb07cf1f0ddef216dccdc05c3b

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
8790a4f6ce8f9505c096ba2f62049ae2

SHA1
e634398c5a009b7e9874c3f57126706305bbe6d2

SHA256
8dfc4ae0ee802eda5a7cd6db7db7339c67e73f1115bc3d9c41f48487df99cc31

SHA512
787554b74d34d2f392c69d8f374659e6ed22899e2221a79632edd996e058fcb279c9b056ca046f5abc3f5a973645ba6cf3cd27b67d6bd738ddad2bc6d9f7b615

Download Submit
memory/288-37-0x0000000074410000-0x0000000074AFE000-memory.dmp

Filesize
6.9MB

Download
memory/288-0-0x000000007441E000-0x000000007441F000-memory.dmp

Filesize
4KB

Download
memory/288-6-0x0000000005480000-0x0000000005544000-memory.dmp

Filesize
784KB

Download
memory/288-4-0x000000007441E000-0x000000007441F000-memory.dmp

Filesize
4KB

Download
memory/288-3-0x0000000000250000-0x0000000000262000-memory.dmp

Filesize
72KB

Download
memory/288-1-0x0000000001310000-0x00000000013F6000-memory.dmp

Filesize
920KB

Download
memory/288-2-0x0000000074410000-0x0000000074AFE000-memory.dmp

Filesize
6.9MB

Download
memory/288-5-0x0000000074410000-0x0000000074AFE000-memory.dmp

Filesize
6.9MB

Download
memory/1184-57-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1184-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1184-55-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2404-52-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2404-50-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2404-49-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2652-51-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2652-53-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2652-47-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2864-97-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2864-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-64-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2864-68-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2864-67-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2864-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-88-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-89-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-96-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download