remcos | b4dd6028cee2639d37e71ec0d6c4da213a36e1680278c3e11c95a1e5d97d3403

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
27-08-2024 01:10

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General

Target

PH _notice.exe
Size

1.4MB
MD5

7fc9e55e32c9f869c981a0f01c19ed38
SHA1

67432788109e525c926eb48c6a677ad263c5e0e6
SHA256

33ddb1e061846b657c98e5ab704904acec0ba103e4e37621a24675aaef1417f7
SHA512

b5fb55b201f0011c6be83ee5460ff8a578dfd78a76cab9433b25faa68412ee03eb79c870f310a494ea5048acb6f0f7cec14aa9f3ef0ca3be815070f17d724af5
SSDEEP

24576:XqDEvCTbMWu7rQYlBQcBiT6rprG8amGGPS3uTr6szL5Rco604o:XTvC/MTQYxsWR7amGATrFLrcop4

Score

10^/10

remcos remotehost collection credential_access discovery rat stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

194.169.175.190:2404

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
remcos
mouse_option
false
mutex
Rmc-LBZ2BK
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 9 IoCs

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

resource	yara_rule
behavioral2/memory/3540-35-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3540-38-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3540-40-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2336-39-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1348-37-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2336-36-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2336-33-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1348-34-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1348-45-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2336-39-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2336-36-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2336-33-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1348-37-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1348-34-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1348-45-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4960 set thread context of 2312	4960	PH _notice.exe	91
PID 2312 set thread context of 1348	2312	svchost.exe	95
PID 2312 set thread context of 2336	2312	svchost.exe	96
PID 2312 set thread context of 3540	2312	svchost.exe	97

System Location Discovery: System Language Discovery 1 TTPs 5 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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PH _notice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1348	svchost.exe
1348	svchost.exe
3540	svchost.exe
3540	svchost.exe
1348	svchost.exe
1348	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
4960	PH _notice.exe
2312	svchost.exe
2312	svchost.exe
2312	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3540	svchost.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
4960	PH _notice.exe
4960	PH _notice.exe
4960	PH _notice.exe
4960	PH _notice.exe
4960	PH _notice.exe
4960	PH _notice.exe
4960	PH _notice.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
4960	PH _notice.exe
4960	PH _notice.exe
4960	PH _notice.exe
4960	PH _notice.exe
4960	PH _notice.exe
4960	PH _notice.exe
4960	PH _notice.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4960 wrote to memory of 2312	4960	PH _notice.exe	91
PID 4960 wrote to memory of 2312	4960	PH _notice.exe	91
PID 4960 wrote to memory of 2312	4960	PH _notice.exe	91
PID 4960 wrote to memory of 2312	4960	PH _notice.exe	91
PID 2312 wrote to memory of 1348	2312	svchost.exe	95
PID 2312 wrote to memory of 1348	2312	svchost.exe	95
PID 2312 wrote to memory of 1348	2312	svchost.exe	95
PID 2312 wrote to memory of 1348	2312	svchost.exe	95
PID 2312 wrote to memory of 2336	2312	svchost.exe	96
PID 2312 wrote to memory of 2336	2312	svchost.exe	96
PID 2312 wrote to memory of 2336	2312	svchost.exe	96
PID 2312 wrote to memory of 2336	2312	svchost.exe	96
PID 2312 wrote to memory of 3540	2312	svchost.exe	97
PID 2312 wrote to memory of 3540	2312	svchost.exe	97
PID 2312 wrote to memory of 3540	2312	svchost.exe	97
PID 2312 wrote to memory of 3540	2312	svchost.exe	97

C:\Users\Admin\AppData\Local\Temp\PH _notice.exe
"C:\Users\Admin\AppData\Local\Temp\PH _notice.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\PH _notice.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2312
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\cwlypdkqlglnhjjqjvarbiddjthgoodl"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1348
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\mqyr"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2336
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\ptdkqno"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\cwlypdkqlglnhjjqjvarbiddjthgoodl

Filesize
4KB

MD5
18db1829b27eaeed163c211f5d179d72

SHA1
4442332494cba1e012f8876ecac42126ba995bc6

SHA256
610c5ee3f0e63441521d26bc477c9618a4c5f86e93d31b31890680c69e3ecc3d

SHA512
123d68b2c84f7a52d15faa212c06f33b04a55585e2aeb16bb14df95b18c0bcf31933e5bf0c736c90bc054b9527fccb046540d3302a0f149ebeed7c6bcca0b986

Download Submit
memory/1348-37-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1348-45-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1348-24-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1348-29-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1348-34-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2312-50-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2312-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-47-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2312-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2312-51-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2336-30-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2336-33-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2336-36-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2336-39-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2336-25-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3540-38-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3540-27-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3540-32-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3540-40-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3540-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4960-11-0x0000000003D90000-0x0000000003D94000-memory.dmp

Filesize
16KB

Download