remcos | 4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e

General

Target

4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
Size

483KB
MD5

3eb4a2438c10b96d35e92681c26d8a44
SHA1

eec66bccb7cbfba6d51e590df55e3b2d380d7af4
SHA256

4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e
SHA512

b0dcec918881a80d44de7aa9a10ffd78139e14b4164644b1d28d9fb5c31e6604749da25b32394c3bedbcc2a4f32022569cd34af8fd36552b464563f04e53d982
SSDEEP

6144:JTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZmAX4crZT4:JTlrYw1RUh3NFn+N5WfIQIjbs/ZmiT4

Score

10^/10

remcos remotehost collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

pericomaa.duckdns.org:3210

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-RY9GWY
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 9 IoCs

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

resource	yara_rule
behavioral2/memory/4100-13-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3100-12-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4100-16-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3740-21-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4100-18-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3100-15-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3740-14-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3740-10-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3100-26-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4100-13-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4100-16-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4100-18-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3100-12-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3100-15-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3100-26-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

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-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2160 set thread context of 3100	2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe	86
PID 2160 set thread context of 4100	2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe	87
PID 2160 set thread context of 3740	2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe	88

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	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3100	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
3100	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
3740	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
3740	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
3100	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
3100	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3740	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 3100	2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe	86
PID 2160 wrote to memory of 3100	2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe	86
PID 2160 wrote to memory of 3100	2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe	86
PID 2160 wrote to memory of 4100	2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe	87
PID 2160 wrote to memory of 4100	2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe	87
PID 2160 wrote to memory of 4100	2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe	87
PID 2160 wrote to memory of 3740	2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe	88
PID 2160 wrote to memory of 3740	2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe	88
PID 2160 wrote to memory of 3740	2160	4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe	88

C:\Users\Admin\AppData\Local\Temp\4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
"C:\Users\Admin\AppData\Local\Temp\4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2160
- C:\Users\Admin\AppData\Local\Temp\4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
  C:\Users\Admin\AppData\Local\Temp\4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe /stext "C:\Users\Admin\AppData\Local\Temp\dssxpbsprvlnvd"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3100
- C:\Users\Admin\AppData\Local\Temp\4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
  C:\Users\Admin\AppData\Local\Temp\4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe /stext "C:\Users\Admin\AppData\Local\Temp\nmyqqudreddrgssec"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:4100
- C:\Users\Admin\AppData\Local\Temp\4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe
  C:\Users\Admin\AppData\Local\Temp\4b0c30283abd181b9a171c9ca166d9caf8cce6534a80d54cadd798b535f8d11e.exe /stext "C:\Users\Admin\AppData\Local\Temp\ppdirmokslvwiyoiltfwx"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
4KB

MD5
75379d3dcbcea6a69bc75b884816dd40

SHA1
7e073a03c3bdbbc60375ddbe56bba211c3d412a6

SHA256
cab559f3bbe4a0beb194dffca723b3072184b92687100462eaab04d66fff8de9

SHA512
710c2cee369a57a0039fc0d0c59de6118780210ef60ad0daf374f03ba94ab08039bc2aff821f7c99a0ecd0e16189c52e5b6d630b3d541f7b11375f134b985e8c

Download Submit
memory/2160-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2160-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2160-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2160-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2160-29-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3100-6-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3100-12-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3100-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3100-15-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3100-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3740-17-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/3740-9-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3740-7-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3740-10-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3740-14-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3740-21-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4100-5-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4100-11-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4100-18-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4100-16-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4100-13-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download

Analysis

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