remcos | 1f0a225b3b04a26d777a315cb1cacde6d5b0d7fc9e182a96ef035b41adada2de

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
05-12-2023 07:17

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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

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 3 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/1044-58-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral1/memory/1044-62-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral1/memory/1044-87-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral1/memory/2216-59-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2216-63-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2216-75-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 9 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1044-58-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral1/memory/2216-59-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2216-63-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1044-62-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral1/memory/476-68-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/476-69-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/476-70-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2216-75-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1044-87-0x0000000000400000-0x0000000000457000-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-1-5-21-2084844033-2744876406-2053742436-1000\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 1728 set thread context of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 2708 set thread context of 2216	2708	RegAsm.exe	RegAsm.exe
PID 2708 set thread context of 1044	2708	RegAsm.exe	RegAsm.exe
PID 2708 set thread context of 476	2708	RegAsm.exe	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Powershell.exeRegAsm.exe

pid process

3052 Powershell.exe
2216 RegAsm.exe
2216 RegAsm.exe
Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

RegAsm.exe

pid process

2708 RegAsm.exe
2708 RegAsm.exe
2708 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Powershell.exeRegAsm.exe

description pid process

Token: SeDebugPrivilege 3052 Powershell.exe
Token: SeDebugPrivilege 476 RegAsm.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

2708 RegAsm.exe

pid	process
3052	Powershell.exe
2216	RegAsm.exe
2216	RegAsm.exe

pid	process
2708	RegAsm.exe
2708	RegAsm.exe
2708	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	3052	Powershell.exe
Token: SeDebugPrivilege	476	RegAsm.exe

pid	process
2708	RegAsm.exe

Suspicious use of WriteProcessMemory 44 IoCs

Processes:

GH09876545600-87.bat.exeRegAsm.exe

description	pid	process	target process
PID 1728 wrote to memory of 3052	1728	GH09876545600-87.bat.exe	Powershell.exe
PID 1728 wrote to memory of 3052	1728	GH09876545600-87.bat.exe	Powershell.exe
PID 1728 wrote to memory of 3052	1728	GH09876545600-87.bat.exe	Powershell.exe
PID 1728 wrote to memory of 3052	1728	GH09876545600-87.bat.exe	Powershell.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 1728 wrote to memory of 2708	1728	GH09876545600-87.bat.exe	RegAsm.exe
PID 2708 wrote to memory of 2216	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 2216	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 2216	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 2216	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 2216	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 2216	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 2216	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 2216	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 1044	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 1044	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 1044	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 1044	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 1044	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 1044	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 1044	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 1044	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 476	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 476	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 476	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 476	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 476	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 476	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 476	2708	RegAsm.exe	RegAsm.exe
PID 2708 wrote to memory of 476	2708	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:1728

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:3052

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:2708

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\aryciot"
3⤵
- Suspicious behavior: EnumeratesProcesses
PID:2216

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\kldvagegue"
3⤵
- Accesses Microsoft Outlook accounts
PID:1044

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\vfifbzphimzkh"
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:476

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

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
8e6d3a2135c3d0215fb81f6f45d38d7c

SHA1
2075d8d1ad2ac09873b78bf8b9695eef74fb676b

SHA256
314159f91084edb4eeef690508b8e23bc21b5167f255e3ab316e1eae6e18f37e

SHA512
6e4c22c5563e6572563a736f524ad13e476280cc3fd5cf7e1d9295a98f4b8bd8d2124266bdbcf041ba3205d4e38629f403b01f8273984245655d74b080bd47ae

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/476-69-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/476-64-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/476-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/476-66-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/476-67-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/476-68-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/476-70-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1044-87-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1044-55-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1044-62-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1044-58-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1044-51-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1044-47-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1728-9-0x00000000003D0000-0x00000000003DA000-memory.dmp

Filesize
40KB

Download
memory/1728-1-0x0000000074D60000-0x000000007544E000-memory.dmp

Filesize
6.9MB

Download
memory/1728-3-0x0000000004AA0000-0x0000000004B4E000-memory.dmp

Filesize
696KB

Download
memory/1728-2-0x0000000000520000-0x0000000000560000-memory.dmp

Filesize
256KB

Download
memory/1728-0-0x0000000000160000-0x00000000002AA000-memory.dmp

Filesize
1.3MB

Download
memory/1728-23-0x0000000074D60000-0x000000007544E000-memory.dmp

Filesize
6.9MB

Download
memory/2216-42-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2216-50-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2216-75-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2216-57-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2216-63-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2216-59-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2216-46-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2708-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-103-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2708-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-95-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-80-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2708-83-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2708-84-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2708-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-86-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2708-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3052-6-0x0000000070440000-0x00000000709EB000-memory.dmp

Filesize
5.7MB

Download
memory/3052-8-0x00000000026B0000-0x00000000026F0000-memory.dmp

Filesize
256KB

Download
memory/3052-7-0x0000000070440000-0x00000000709EB000-memory.dmp

Filesize
5.7MB

Download
memory/3052-10-0x00000000026B0000-0x00000000026F0000-memory.dmp

Filesize
256KB

Download
memory/3052-37-0x0000000070440000-0x00000000709EB000-memory.dmp

Filesize
5.7MB

Download