remcos | 643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a

Analysis

max time kernel
148s
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
06/08/2024, 17:01

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General

Target

MalwareBazaar.exe
Size

2.2MB
MD5

3ed90b2bd6ec121cf790ecad26211841
SHA1

d94d98f456cdc4361c570ecd58c610d028f59cfa
SHA256

643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a
SHA512

9b3974210037f14af9ba26dfc1b36fecae9c54f959ba9ef458b088f126b77b269d3dc1990066e8f940739a78889104be206b8ef37b9837215e494e93bd846681
SSDEEP

24576:aj553zh61j6HexTq60rWTu2mTOI40R4c0vuu0:aj553z0celp0aC2mTd+uH

Score

10^/10

remcos dollar man collection credential_access discovery rat stealer

Malware Config

Extracted

Family

remcos

Botnet

Dollar Man

178.23.190.118:52499

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-SJ9MVF
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/2496-30-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2496-33-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3656-32-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4368-31-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3656-39-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4368-38-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3656-29-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4368-34-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2496-41-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3656-32-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3656-39-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3656-29-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2496-30-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2496-33-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2496-41-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	aspnet_wp.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3708 set thread context of 3776	3708	MalwareBazaar.exe	88
PID 3776 set thread context of 2496	3776	aspnet_wp.exe	93
PID 3776 set thread context of 3656	3776	aspnet_wp.exe	94
PID 3776 set thread context of 4368	3776	aspnet_wp.exe	95

System Location Discovery: System Language Discovery 1 TTPs 4 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	aspnet_wp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aspnet_wp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aspnet_wp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aspnet_wp.exe

Runs regedit.exe 1 IoCs

pid	Process
556	regedit.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2496	aspnet_wp.exe
2496	aspnet_wp.exe
4368	aspnet_wp.exe
4368	aspnet_wp.exe
2496	aspnet_wp.exe
2496	aspnet_wp.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
3776	aspnet_wp.exe
3776	aspnet_wp.exe
3776	aspnet_wp.exe
3776	aspnet_wp.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4368	aspnet_wp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3776	aspnet_wp.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 3708 wrote to memory of 556	3708	MalwareBazaar.exe	87
PID 3708 wrote to memory of 556	3708	MalwareBazaar.exe	87
PID 3708 wrote to memory of 556	3708	MalwareBazaar.exe	87
PID 3708 wrote to memory of 556	3708	MalwareBazaar.exe	87
PID 3708 wrote to memory of 556	3708	MalwareBazaar.exe	87
PID 3708 wrote to memory of 556	3708	MalwareBazaar.exe	87
PID 3708 wrote to memory of 556	3708	MalwareBazaar.exe	87
PID 3708 wrote to memory of 556	3708	MalwareBazaar.exe	87
PID 3708 wrote to memory of 556	3708	MalwareBazaar.exe	87
PID 3708 wrote to memory of 556	3708	MalwareBazaar.exe	87
PID 3708 wrote to memory of 3776	3708	MalwareBazaar.exe	88
PID 3708 wrote to memory of 3776	3708	MalwareBazaar.exe	88
PID 3708 wrote to memory of 3776	3708	MalwareBazaar.exe	88
PID 3708 wrote to memory of 3776	3708	MalwareBazaar.exe	88
PID 3708 wrote to memory of 3776	3708	MalwareBazaar.exe	88
PID 3708 wrote to memory of 3776	3708	MalwareBazaar.exe	88
PID 3708 wrote to memory of 3776	3708	MalwareBazaar.exe	88
PID 3708 wrote to memory of 3776	3708	MalwareBazaar.exe	88
PID 3708 wrote to memory of 3776	3708	MalwareBazaar.exe	88
PID 3708 wrote to memory of 3776	3708	MalwareBazaar.exe	88
PID 3708 wrote to memory of 3776	3708	MalwareBazaar.exe	88
PID 3708 wrote to memory of 3776	3708	MalwareBazaar.exe	88
PID 3776 wrote to memory of 2364	3776	aspnet_wp.exe	92
PID 3776 wrote to memory of 2364	3776	aspnet_wp.exe	92
PID 3776 wrote to memory of 2364	3776	aspnet_wp.exe	92
PID 3776 wrote to memory of 2496	3776	aspnet_wp.exe	93
PID 3776 wrote to memory of 2496	3776	aspnet_wp.exe	93
PID 3776 wrote to memory of 2496	3776	aspnet_wp.exe	93
PID 3776 wrote to memory of 2496	3776	aspnet_wp.exe	93
PID 3776 wrote to memory of 3656	3776	aspnet_wp.exe	94
PID 3776 wrote to memory of 3656	3776	aspnet_wp.exe	94
PID 3776 wrote to memory of 3656	3776	aspnet_wp.exe	94
PID 3776 wrote to memory of 3656	3776	aspnet_wp.exe	94
PID 3776 wrote to memory of 4368	3776	aspnet_wp.exe	95
PID 3776 wrote to memory of 4368	3776	aspnet_wp.exe	95
PID 3776 wrote to memory of 4368	3776	aspnet_wp.exe	95
PID 3776 wrote to memory of 4368	3776	aspnet_wp.exe	95

C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
"C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3708
- C:\Windows\regedit.exe
  "C:\Windows\regedit.exe"
  2⤵
  - Runs regedit.exe
  PID:556
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3776
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe /stext "C:\Users\Admin\AppData\Local\Temp\jmnios"
    3⤵
    PID:2364
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe /stext "C:\Users\Admin\AppData\Local\Temp\jmnios"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2496
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe /stext "C:\Users\Admin\AppData\Local\Temp\uhtbpkcjw"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:3656
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe /stext "C:\Users\Admin\AppData\Local\Temp\wjytqdnckkaly"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4368

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

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
369597758d0aa3acbf5fc08faff3d7fe

SHA1
ebac2f480d91036ac49aa5ad8409f93fb3078f67

SHA256
0a942aa0d96edc0dc7a5595b4ad338fa2b85345f52bd8e60859381a82ba9e7af

SHA512
8768270f3e9777b78194121b3aea52088325ea38710fbbe84697e25c8a4f6965171b06e9073e9f4da185dd24b977e8df7d3b00cf4fb03f14cc145307a988168c

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

Filesize
4KB

MD5
1891919175c888ce82e9bd8a047b01ad

SHA1
502a6892a5d27ecb791ac5aa6d8586944f540453

SHA256
a6c43b4e4b8681cf0ef56c49c730fa77e34dc82db0260253a3ba75039030b9ec

SHA512
8bb940050b1abf6c27db133ed446f41e108f670f361ed5102408832ce33d9b87cd0880723441f1632292eeeb0a319c4e0fac0ea659eb55ebe1130cc3e6c776a3

Download Submit
memory/2496-20-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2496-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2496-33-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2496-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2496-41-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3656-32-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3656-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3656-39-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3656-21-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3656-26-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3708-0-0x0000019016220000-0x0000019016246000-memory.dmp

Filesize
152KB

Download
memory/3708-4-0x0000019030630000-0x0000019030700000-memory.dmp

Filesize
832KB

Download
memory/3708-15-0x00007FFCA3790000-0x00007FFCA4251000-memory.dmp

Filesize
10.8MB

Download
memory/3708-3-0x00007FFCA3790000-0x00007FFCA4251000-memory.dmp

Filesize
10.8MB

Download
memory/3708-2-0x0000019016780000-0x0000019016786000-memory.dmp

Filesize
24KB

Download
memory/3708-1-0x00007FFCA3793000-0x00007FFCA3795000-memory.dmp

Filesize
8KB

Download
memory/3776-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-5-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-87-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-8-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-7-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-43-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3776-46-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3776-47-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3776-6-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3776-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4368-24-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4368-27-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4368-34-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4368-38-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4368-31-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download