remcos | b36228caaab561c68ae6fedd187804142090698761163947174d9d7513877567

General

Target

17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
Size

483KB
MD5

c6a88078a75cf820171ddec254f357f1
SHA1

f02b7858ad352b812f4299b28992499c124d4337
SHA256

b36228caaab561c68ae6fedd187804142090698761163947174d9d7513877567
SHA512

c26292ca04c479ec9d9b4b92b8d89edbcd21a271e0c7577f8189f9f9b45581d82bc2a8d1d8d0912f06ffa5ebd8ae04afbc0585150c634dda88a0583b76726069
SSDEEP

6144:QTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZXAXkcrzT4:QTlrYw1RUh3NFn+N5WfIQIjbs/ZXAT4

Score

10^/10

remcos remotehost collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

dumboi.duckdns.org:51525

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-8AXK3L
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 7 IoCs

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

resource	yara_rule
behavioral2/memory/1304-9-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1304-12-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/872-21-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/872-23-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2612-10-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2612-8-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2612-26-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1304-9-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1304-12-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2612-10-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2612-8-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2612-26-0x0000000000400000-0x0000000000478000-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-1-5-21-1194130065-3471212556-1656947724-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4972 set thread context of 2612	4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe	82
PID 4972 set thread context of 1304	4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe	83
PID 4972 set thread context of 872	4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe	84

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	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2612	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
2612	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
872	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
872	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
2612	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
2612	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	872	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4972 wrote to memory of 2612	4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe	82
PID 4972 wrote to memory of 2612	4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe	82
PID 4972 wrote to memory of 2612	4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe	82
PID 4972 wrote to memory of 1304	4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe	83
PID 4972 wrote to memory of 1304	4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe	83
PID 4972 wrote to memory of 1304	4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe	83
PID 4972 wrote to memory of 872	4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe	84
PID 4972 wrote to memory of 872	4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe	84
PID 4972 wrote to memory of 872	4972	17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe	84

C:\Users\Admin\AppData\Local\Temp\17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4972
- C:\Users\Admin\AppData\Local\Temp\17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\ifnsogbgbzaqlorvbgxoxtrvrrsgt"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2612
- C:\Users\Admin\AppData\Local\Temp\17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\shslhylhphsvnufzkqkpagmeagbhmewe"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:1304
- C:\Users\Admin\AppData\Local\Temp\17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17282393454a20ebb72846132bb7146ed4a1a58abc0a2fcca78c88bb5a73356856494e7ece637.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\cbxv"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:872

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
536146dab459b10877a04bacafb1b2e7

SHA1
3e90bd60489a74ce616afd1892884fdcde7e5fa7

SHA256
379c263ee6ede1bd6dcc3460f55f0cfa2e5642641aa6bdb3eb8647016c199979

SHA512
32a5086c086738187133fcb645dc93bceb3d99246b4573d6c05baa3b5914e530dc52816fd9a11761ae2912d20778bdbbbba1781b3d4c99e911706370ba777469

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

Filesize
4KB

MD5
ea01dd92b15d2f570f6b167dad2d1fd0

SHA1
7b89141d4c3eb2f29d096f28a9bfe66eb006224a

SHA256
0515f49138d74283f9ac1042fd1a384f715b74c2b99193454dbb0cd585097727

SHA512
0e7695aea30250a41829fa4abb681b8c3ed4c0955e18f1f9f3a5456bfb3a76f016f538e557bf29b99ab6ab48c846f9fa3c4bccd8cb5fe73099a81b5946029ec8

Download Submit
memory/872-16-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/872-21-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/872-23-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/872-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1304-4-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1304-7-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1304-9-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1304-12-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2612-8-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2612-5-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2612-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2612-2-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2612-10-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4972-29-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4972-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4972-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4972-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4972-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4972-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4972-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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