remcos | c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13

Analysis

max time kernel
149s
max time network
145s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
17/09/2024, 01:32

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General

Target

c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe
Size

862KB
MD5

32fdfac1be3eeb287976d70b621ba718
SHA1

2dd9ced6021c1f1e8f772ead665e70ee4250c238
SHA256

c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13
SHA512

a77441898821e5f84c860c05ea62357851330693d1566ff60ea47676efef0846e99192d1ba51d8a5569b2b93acf697eccb0ecf047ed17ab58a9453fd5af32cba
SSDEEP

24576:PYZIth8N9PnPo2SxApB3x8uYU66U25BL:Pvth8N5Po2rpH8uYUOA

Score

10^/10

remcos remotehost collection credential_access discovery execution rat stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

www.drechftankholding.com: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
dfgh
mouse_option
false
mutex
Rmc-8J6PG9
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/2236-58-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2972-62-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2204-57-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2236-58-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2204-57-0x0000000000400000-0x0000000000478000-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
2904	powershell.exe
2768	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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	vbc.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2296 set thread context of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2776 set thread context of 2204	2776	vbc.exe	38
PID 2776 set thread context of 2236	2776	vbc.exe	39
PID 2776 set thread context of 2972	2776	vbc.exe	40

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	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.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

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
2880	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe
2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe
2904	powershell.exe
2768	powershell.exe
2204	vbc.exe
2204	vbc.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2776	vbc.exe
2776	vbc.exe
2776	vbc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe
Token: SeDebugPrivilege	2904	powershell.exe
Token: SeDebugPrivilege	2768	powershell.exe
Token: SeDebugPrivilege	2972	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2776	vbc.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 2904	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	30
PID 2296 wrote to memory of 2904	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	30
PID 2296 wrote to memory of 2904	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	30
PID 2296 wrote to memory of 2904	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	30
PID 2296 wrote to memory of 2768	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	32
PID 2296 wrote to memory of 2768	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	32
PID 2296 wrote to memory of 2768	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	32
PID 2296 wrote to memory of 2768	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	32
PID 2296 wrote to memory of 2880	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	33
PID 2296 wrote to memory of 2880	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	33
PID 2296 wrote to memory of 2880	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	33
PID 2296 wrote to memory of 2880	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	33
PID 2296 wrote to memory of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2296 wrote to memory of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2296 wrote to memory of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2296 wrote to memory of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2296 wrote to memory of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2296 wrote to memory of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2296 wrote to memory of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2296 wrote to memory of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2296 wrote to memory of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2296 wrote to memory of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2296 wrote to memory of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2296 wrote to memory of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2296 wrote to memory of 2776	2296	c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe	36
PID 2776 wrote to memory of 2204	2776	vbc.exe	38
PID 2776 wrote to memory of 2204	2776	vbc.exe	38
PID 2776 wrote to memory of 2204	2776	vbc.exe	38
PID 2776 wrote to memory of 2204	2776	vbc.exe	38
PID 2776 wrote to memory of 2204	2776	vbc.exe	38
PID 2776 wrote to memory of 2236	2776	vbc.exe	39
PID 2776 wrote to memory of 2236	2776	vbc.exe	39
PID 2776 wrote to memory of 2236	2776	vbc.exe	39
PID 2776 wrote to memory of 2236	2776	vbc.exe	39
PID 2776 wrote to memory of 2236	2776	vbc.exe	39
PID 2776 wrote to memory of 2972	2776	vbc.exe	40
PID 2776 wrote to memory of 2972	2776	vbc.exe	40
PID 2776 wrote to memory of 2972	2776	vbc.exe	40
PID 2776 wrote to memory of 2972	2776	vbc.exe	40
PID 2776 wrote to memory of 2972	2776	vbc.exe	40

C:\Users\Admin\AppData\Local\Temp\c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe
"C:\Users\Admin\AppData\Local\Temp\c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2296
- 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\c1f36f8ad9a6360ed406ff3e84dd9b9a765e6edea3d9beb7e5c303230001fd13.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2904
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\sOjQJdX.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2768
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sOjQJdX" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAFEE.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2880
- 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:2776
- - 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\urlofpaibvj"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2204
- - 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\xlqhghlcpebudu"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2236
- - 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\hneahaedlmthnbowy"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2972

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

Replay Monitor

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Downloads

C:\ProgramData\dfgh\logs.dat

Filesize
144B

MD5
929f6910d2a902031f95b55269e91bb5

SHA1
f8f2f7368e2a59c10b86fbac78f10c0ee37ad765

SHA256
a5389e6853616a0af59753cb32cf87605c5f65d349b00f71c4d3ce5d712caaf0

SHA512
81bd31a82aadc7dfd5487c6e6c3fa7f39031f94ac76b3b80b8650d5721af171b7e96a246f8378e977a3e881566652c6049db5f2e0fbb475096ae09bb17791936

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

Filesize
1KB

MD5
2b7d34cc9afc621ebeb7a37393997867

SHA1
0af5384de2b0b9ca5578ad3e5eeea01a36774882

SHA256
8ab468da6038cfdffee0bd3e0433a9af0ef865610fb3d1e41b2ca4a5fb19e50b

SHA512
fdc6da54e55d8c28504a1723dc5a5abda8344c9a6ac2a87500c578625f435a93e23cb5b0e22063f6173e39954f2bda6948786060c829eebd0c23788374535f5c

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

Filesize
7KB

MD5
07c55dbf7f5b5077209525f66f074670

SHA1
523d7177484aadd0f0c948e65768e2e1c0d96d28

SHA256
7184b6894906454af91b31e46b29e9e3944100d313c33e0c4c06b01b7dac6b88

SHA512
c31026a977e93a97061a63ce5fcaa85c121a67b259b40dbb5da0fd1628b3c546d01092bff461d04851054acbffab6d8728d4092403b77f942ff0ce20b3d3a716

Download Submit
memory/2204-52-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2204-57-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2204-55-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2236-54-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2236-58-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2236-56-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2296-4-0x00000000741FE000-0x00000000741FF000-memory.dmp

Filesize
4KB

Download
memory/2296-6-0x0000000004BF0000-0x0000000004CB0000-memory.dmp

Filesize
768KB

Download
memory/2296-0-0x00000000741FE000-0x00000000741FF000-memory.dmp

Filesize
4KB

Download
memory/2296-5-0x00000000741F0000-0x00000000748DE000-memory.dmp

Filesize
6.9MB

Download
memory/2296-42-0x00000000741F0000-0x00000000748DE000-memory.dmp

Filesize
6.9MB

Download
memory/2296-3-0x00000000003E0000-0x00000000003EE000-memory.dmp

Filesize
56KB

Download
memory/2296-2-0x00000000741F0000-0x00000000748DE000-memory.dmp

Filesize
6.9MB

Download
memory/2296-1-0x0000000000A70000-0x0000000000B4E000-memory.dmp

Filesize
888KB

Download
memory/2776-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-73-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2776-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-35-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2776-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-69-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2776-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-72-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2776-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2776-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2972-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2972-62-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2972-60-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download