remcos | 156b1cea1a2f649e332be482047de3d368f5f7b7e93eb4821692ada17a69fc75

Analysis

max time kernel
149s
max time network
146s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
01-10-2024 19:27

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General

Target

SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
Size

1.0MB
MD5

06288ac34c34b1751dca19951d6140f8
SHA1

e3af412db4368c7a3c7b3a0a812c2af6903bb697
SHA256

156b1cea1a2f649e332be482047de3d368f5f7b7e93eb4821692ada17a69fc75
SHA512

47cd551807523783db43570df4d3ab4edb52699b8a118b91453c12aa5c5ca3b746a023ce6b5b0561754f876671136312b9aa725d6a8c5fec0ef004231caaf039
SSDEEP

24576:FyAXOCNGRx9s8Qbzjx84azkY9zIe8BIPX66Id:FyQOyax9sbjNaznzbmIvrId

Score

10^/10

remcos remotehost collection discovery execution rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

hiddenrmcnew.duckdns.org:7839

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-PW8G0U
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

Detected Nirsoft tools 3 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral1/memory/2044-55-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2996-59-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2648-54-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2648-54-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2044-55-0x0000000000400000-0x0000000000478000-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
2812	powershell.exe
2092	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-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1080 set thread context of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 2664 set thread context of 2044	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	37
PID 2664 set thread context of 2648	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	38
PID 2664 set thread context of 2996	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.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

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
2820	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
2092	powershell.exe
2812	powershell.exe
2044	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
2044	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
Token: SeDebugPrivilege	2092	powershell.exe
Token: SeDebugPrivilege	2812	powershell.exe
Token: SeDebugPrivilege	2996	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 1080 wrote to memory of 2812	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	30
PID 1080 wrote to memory of 2812	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	30
PID 1080 wrote to memory of 2812	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	30
PID 1080 wrote to memory of 2812	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	30
PID 1080 wrote to memory of 2092	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	32
PID 1080 wrote to memory of 2092	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	32
PID 1080 wrote to memory of 2092	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	32
PID 1080 wrote to memory of 2092	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	32
PID 1080 wrote to memory of 2820	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	33
PID 1080 wrote to memory of 2820	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	33
PID 1080 wrote to memory of 2820	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	33
PID 1080 wrote to memory of 2820	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	33
PID 1080 wrote to memory of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 1080 wrote to memory of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 1080 wrote to memory of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 1080 wrote to memory of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 1080 wrote to memory of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 1080 wrote to memory of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 1080 wrote to memory of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 1080 wrote to memory of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 1080 wrote to memory of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 1080 wrote to memory of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 1080 wrote to memory of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 1080 wrote to memory of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 1080 wrote to memory of 2664	1080	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	36
PID 2664 wrote to memory of 2044	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	37
PID 2664 wrote to memory of 2044	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	37
PID 2664 wrote to memory of 2044	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	37
PID 2664 wrote to memory of 2044	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	37
PID 2664 wrote to memory of 2044	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	37
PID 2664 wrote to memory of 2648	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	38
PID 2664 wrote to memory of 2648	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	38
PID 2664 wrote to memory of 2648	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	38
PID 2664 wrote to memory of 2648	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	38
PID 2664 wrote to memory of 2648	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	38
PID 2664 wrote to memory of 2996	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	39
PID 2664 wrote to memory of 2996	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	39
PID 2664 wrote to memory of 2996	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	39
PID 2664 wrote to memory of 2996	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	39
PID 2664 wrote to memory of 2996	2664	SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe	39

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1080
- 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\SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2812
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZukuCcvWAQW.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2092
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZukuCcvWAQW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp33C.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2820
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
  "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2664
- - C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
    C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe /stext "C:\Users\Admin\AppData\Local\Temp\lfgnqlwzovexgbci"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2044
- - C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
    C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe /stext "C:\Users\Admin\AppData\Local\Temp\whlxrvhtcdwcqhymgeg"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2648
- - C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe
    C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BackDoor.AgentTeslaNET.42.31568.2849.exe /stext "C:\Users\Admin\AppData\Local\Temp\gbrqsoruplohtwmqxotjxw"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2996

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:\Users\Admin\AppData\Local\Temp\lfgnqlwzovexgbci

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp33C.tmp

Filesize
1KB

MD5
d8c2e3824337d09998933aec2505755e

SHA1
8c7a3fbcd84bdf929245687027c0b7ced84e774b

SHA256
df9f9f228931684b4d397d97bc6fa43c18c99a13ef2191a2b909f4a1537f06e2

SHA512
d15b00ce3f88839bdda99cee17f14f2b4f717c4eed5c5ac795d9f08c6779a32a58010441dae4fff1f5763e106c9762485d9326aea19646358a459a27994c5f7b

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

Filesize
7KB

MD5
8415f52d0ae02f08ceadf9907a470fe5

SHA1
597b57891c32baa21bc7bdd57a9f8e8526964ebd

SHA256
6fa226ff67716217ab300c5fcced2295d4cfbfee5aa6cecf3091f740dc4b635c

SHA512
ddc24611f1e15cf02bb592be5fec4ad51a28626762708efe6a3c816c8775843833e6ae243ba0140266120c3e88b367f3320b04d008f57d6f1023047a809f88a2

Download Submit
memory/1080-4-0x000000007473E000-0x000000007473F000-memory.dmp

Filesize
4KB

Download
memory/1080-0-0x000000007473E000-0x000000007473F000-memory.dmp

Filesize
4KB

Download
memory/1080-5-0x0000000074730000-0x0000000074E1E000-memory.dmp

Filesize
6.9MB

Download
memory/1080-6-0x0000000001FB0000-0x0000000002070000-memory.dmp

Filesize
768KB

Download
memory/1080-3-0x0000000000540000-0x000000000055E000-memory.dmp

Filesize
120KB

Download
memory/1080-2-0x0000000074730000-0x0000000074E1E000-memory.dmp

Filesize
6.9MB

Download
memory/1080-1-0x0000000000910000-0x0000000000A14000-memory.dmp

Filesize
1.0MB

Download
memory/1080-39-0x0000000074730000-0x0000000074E1E000-memory.dmp

Filesize
6.9MB

Download
memory/2044-52-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2044-55-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2044-49-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2648-53-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2648-54-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2648-51-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2664-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-68-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2664-69-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2664-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2664-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2664-65-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2996-57-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2996-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2996-59-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download