remcos | 1f0a225b3b04a26d777a315cb1cacde6d5b0d7fc9e182a96ef035b41adada2de

General

Target

GH09876545600-87.bat.exe
Size

1.3MB
MD5

f0b143f0d8012b2acb59e94544ee8a95
SHA1

215cd6adf283a17bf4c717e27842bc1e9bfb2058
SHA256

1f0a225b3b04a26d777a315cb1cacde6d5b0d7fc9e182a96ef035b41adada2de
SHA512

64b5dd4b4f14c090a06cbfa3dc69028efdc9c2c973afe7b3449eb4211611d8f373124eef14553548dd0cfc18b057d9518000ea6a8082fe1987c05b89f9a9dfa1
SSDEEP

24576:HYc6g/pOKKeFZYokY8+VnPZhNsqWOgjcjqQvWV:HrZYokYNnFsfxjcjqbV

Score

10^/10

remcos remotehost collection rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.175.229.139:8087

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
remcos
mouse_option
false
mutex
Rmc-IZFV1M
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

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/3084-60-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral2/memory/3084-65-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/4924-52-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4924-53-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4924-77-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 7 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4924-52-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4924-53-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3084-60-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral2/memory/3084-65-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral2/memory/2408-67-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2408-69-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4924-77-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

Drops startup file 2 IoCs

Processes:

Powershell.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe

Reads user/profile data of web browsers 2 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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	RegAsm.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

GH09876545600-87.bat.exeRegAsm.exe

description	pid	process	target process
PID 636 set thread context of 4592	636	GH09876545600-87.bat.exe	RegAsm.exe
PID 4592 set thread context of 4924	4592	RegAsm.exe	RegAsm.exe
PID 4592 set thread context of 3084	4592	RegAsm.exe	RegAsm.exe
PID 4592 set thread context of 2408	4592	RegAsm.exe	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

Powershell.exeRegAsm.exeRegAsm.exe

pid process

5084 Powershell.exe
5084 Powershell.exe
4924 RegAsm.exe
4924 RegAsm.exe
2408 RegAsm.exe
2408 RegAsm.exe
4924 RegAsm.exe
4924 RegAsm.exe
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

RegAsm.exe

pid process

4592 RegAsm.exe
4592 RegAsm.exe
4592 RegAsm.exe
4592 RegAsm.exe
4592 RegAsm.exe
4592 RegAsm.exe
4592 RegAsm.exe
4592 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Powershell.exeRegAsm.exe

description pid process

Token: SeDebugPrivilege 5084 Powershell.exe
Token: SeDebugPrivilege 2408 RegAsm.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

4592 RegAsm.exe

pid	process
5084	Powershell.exe
5084	Powershell.exe
4924	RegAsm.exe
4924	RegAsm.exe
2408	RegAsm.exe
2408	RegAsm.exe
4924	RegAsm.exe
4924	RegAsm.exe

pid	process
4592	RegAsm.exe
4592	RegAsm.exe
4592	RegAsm.exe
4592	RegAsm.exe
4592	RegAsm.exe
4592	RegAsm.exe
4592	RegAsm.exe
4592	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	5084	Powershell.exe
Token: SeDebugPrivilege	2408	RegAsm.exe

pid	process
4592	RegAsm.exe

Suspicious use of WriteProcessMemory 42 IoCs

Processes:

GH09876545600-87.bat.exeRegAsm.exe

description	pid	process	target process
PID 636 wrote to memory of 5084	636	GH09876545600-87.bat.exe	Powershell.exe
PID 636 wrote to memory of 5084	636	GH09876545600-87.bat.exe	Powershell.exe
PID 636 wrote to memory of 5084	636	GH09876545600-87.bat.exe	Powershell.exe
PID 636 wrote to memory of 4592	636	GH09876545600-87.bat.exe	RegAsm.exe
PID 636 wrote to memory of 4592	636	GH09876545600-87.bat.exe	RegAsm.exe
PID 636 wrote to memory of 4592	636	GH09876545600-87.bat.exe	RegAsm.exe
PID 636 wrote to memory of 4592	636	GH09876545600-87.bat.exe	RegAsm.exe
PID 636 wrote to memory of 4592	636	GH09876545600-87.bat.exe	RegAsm.exe
PID 636 wrote to memory of 4592	636	GH09876545600-87.bat.exe	RegAsm.exe
PID 636 wrote to memory of 4592	636	GH09876545600-87.bat.exe	RegAsm.exe
PID 636 wrote to memory of 4592	636	GH09876545600-87.bat.exe	RegAsm.exe
PID 636 wrote to memory of 4592	636	GH09876545600-87.bat.exe	RegAsm.exe
PID 636 wrote to memory of 4592	636	GH09876545600-87.bat.exe	RegAsm.exe
PID 636 wrote to memory of 4592	636	GH09876545600-87.bat.exe	RegAsm.exe
PID 636 wrote to memory of 4592	636	GH09876545600-87.bat.exe	RegAsm.exe
PID 4592 wrote to memory of 4484	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 4484	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 4484	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 4924	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 4924	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 4924	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 4924	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 2688	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 2688	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 2688	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 1424	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 1424	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 1424	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 3084	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 3084	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 3084	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 3084	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 632	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 632	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 632	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 4824	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 4824	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 4824	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 2408	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 2408	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 2408	4592	RegAsm.exe	RegAsm.exe
PID 4592 wrote to memory of 2408	4592	RegAsm.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\GH09876545600-87.bat.exe
"C:\Users\Admin\AppData\Local\Temp\GH09876545600-87.bat.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:636

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
"Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\GH09876545600-87.bat.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'
2⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5084

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4592

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\djwyocvxmzfhh"
3⤵
PID:4484

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\djwyocvxmzfhh"
3⤵
- Suspicious behavior: EnumeratesProcesses
PID:4924

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\ndbjovfrahxljnzh"
3⤵
PID:2688

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\ndbjovfrahxljnzh"
3⤵
PID:1424

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\ndbjovfrahxljnzh"
3⤵
- Accesses Microsoft Outlook accounts
PID:3084

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\pfobpnqtnppqtuntbmo"
3⤵
PID:632

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\pfobpnqtnppqtuntbmo"
3⤵
PID:4824

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\pfobpnqtnppqtuntbmo"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2408

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat
Filesize
144B

MD5
e1e126a044efe328adb493a077a4e5e9

SHA1
987cfe942d91ad045bae17fc0366a9183790223b

SHA256
936963d1d2a2413aeac8b6045b24ecb2b101c2c5dca42d4d91a37c4ff4db7835

SHA512
807fa2ca001668649b5affd941c255482f3de9421f5a81ee6dcb0f847c060075407e98103eb65c28a1595ab82ea0fba9e3a3b557ed5d00e6d3344bc16cbbdec1

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_51ohr412.x4v.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\djwyocvxmzfhh
Filesize
4KB

MD5
fda76cfa7a55a35c055559a4e3f7c6b9

SHA1
97ae85ddba2c0b1f1bcb06f2f1be648d060b9505

SHA256
6c32c258dbbd9064a9d55b98cd2bbe6fdb750092d6ab1c0a0841f7bc8c4b83bd

SHA512
7a7e71e72346ea106cd63f336f52e836c233ac40eee9d3ccee7e0a6668ca7e8ed788ff02a1732e55f0b49610bb00c3d80c5dcc4c6834a5914217fadf069df0cc

Download Submit
memory/636-0-0x00000000002C0000-0x000000000040A000-memory.dmp

Filesize
1.3MB

Download
memory/636-3-0x0000000004EA0000-0x0000000004EB0000-memory.dmp

Filesize
64KB

Download
memory/636-5-0x0000000004F50000-0x0000000004FE2000-memory.dmp

Filesize
584KB

Download
memory/636-6-0x0000000004FF0000-0x000000000508C000-memory.dmp

Filesize
624KB

Download
memory/636-2-0x0000000004D70000-0x0000000004E1E000-memory.dmp

Filesize
696KB

Download
memory/636-4-0x0000000005460000-0x0000000005A04000-memory.dmp

Filesize
5.6MB

Download
memory/636-28-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/636-1-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/636-25-0x0000000004EB0000-0x0000000004EBA000-memory.dmp

Filesize
40KB

Download
memory/1424-47-0x00000000003F0000-0x00000000003F0000-memory.dmp

Download
memory/2408-69-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2408-55-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2408-67-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2408-62-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3084-60-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3084-65-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3084-54-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3084-49-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/4592-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-84-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4592-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-79-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4592-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-109-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-83-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4592-82-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4592-108-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-91-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4592-92-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4592-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4924-53-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4924-52-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4924-50-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4924-46-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4924-44-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4924-77-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5084-19-0x00000000060F0000-0x0000000006156000-memory.dmp

Filesize
408KB

Download
memory/5084-75-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download
memory/5084-68-0x00000000076C0000-0x0000000007756000-memory.dmp

Filesize
600KB

Download
memory/5084-71-0x0000000006C60000-0x0000000006C82000-memory.dmp

Filesize
136KB

Download
memory/5084-70-0x0000000006BE0000-0x0000000006BFA000-memory.dmp

Filesize
104KB

Download
memory/5084-34-0x0000000006750000-0x000000000679C000-memory.dmp

Filesize
304KB

Download
memory/5084-33-0x0000000006700000-0x000000000671E000-memory.dmp

Filesize
120KB

Download
memory/5084-24-0x0000000006260000-0x00000000065B4000-memory.dmp

Filesize
3.3MB

Download
memory/5084-13-0x0000000006010000-0x0000000006076000-memory.dmp

Filesize
408KB

Download
memory/5084-12-0x0000000005730000-0x0000000005752000-memory.dmp

Filesize
136KB

Download
memory/5084-11-0x0000000005970000-0x0000000005F98000-memory.dmp

Filesize
6.2MB

Download
memory/5084-10-0x0000000005330000-0x0000000005340000-memory.dmp

Filesize
64KB

Download
memory/5084-9-0x0000000005330000-0x0000000005340000-memory.dmp

Filesize
64KB

Download
memory/5084-8-0x0000000005150000-0x0000000005186000-memory.dmp

Filesize
216KB

Download
memory/5084-7-0x0000000075150000-0x0000000075900000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads