remcos | b065d78d5be477fa31886590dca6e95daec84296a2b5d9bd4d293fbc1cbf5cfc

General

Target

1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
Size

482KB
MD5

a0453ab39ff4d213a85b94f1ad4478ac
SHA1

8a8f01321a77ac06693bded5cd39b3ca3197cf96
SHA256

b065d78d5be477fa31886590dca6e95daec84296a2b5d9bd4d293fbc1cbf5cfc
SHA512

51c1e03d1a7892d3b8943c42d6ee2a57cf077b041041f31278da272ebaeef575d689446cfddb53c1a71cd7fcffa4f96ed34e65032e184fbbe45ef0cad85f47d6
SSDEEP

12288:513ak/mBXTG4/1v08KI7ZnMEF76JqmsvZQMS:rak/mBXTV/R0nEF76gFZn

Score

10^/10

remcos billionairewealth collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

Billionairewealth

C2

treeofwealth.freemyip.com:3980

treeofwealth.freemyip.com:3981

treeofwealthyz.freemyip.com:3980

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-A5VKNH
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
Remcos family
remcos

Detected Nirsoft tools 8 IoCs

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

resource	yara_rule
behavioral2/memory/4552-10-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4392-15-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4392-9-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4392-8-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4552-7-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2616-20-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2616-23-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4552-25-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4392-15-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4392-9-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4392-8-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4552-10-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4552-7-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4552-25-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe

Deletes itself 1 IoCs

pid	Process
4672	WScript.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-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3776 set thread context of 4552	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	82
PID 3776 set thread context of 4392	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	83
PID 3776 set thread context of 2616	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	84

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 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	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000_Classes\Local Settings	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4552	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
4552	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
2616	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
2616	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
4552	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
4552	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2616	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3776 wrote to memory of 4552	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	82
PID 3776 wrote to memory of 4552	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	82
PID 3776 wrote to memory of 4552	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	82
PID 3776 wrote to memory of 4392	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	83
PID 3776 wrote to memory of 4392	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	83
PID 3776 wrote to memory of 4392	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	83
PID 3776 wrote to memory of 2616	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	84
PID 3776 wrote to memory of 2616	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	84
PID 3776 wrote to memory of 2616	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	84
PID 3776 wrote to memory of 4672	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	94
PID 3776 wrote to memory of 4672	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	94
PID 3776 wrote to memory of 4672	3776	1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe	94

C:\Users\Admin\AppData\Local\Temp\1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3776
- C:\Users\Admin\AppData\Local\Temp\1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\wewwvcsdiyvrqndurinmhppehspip"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4552
- C:\Users\Admin\AppData\Local\Temp\1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\hycpvudxvgnesbzyathgkukvqghrisocv"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:4392
- C:\Users\Admin\AppData\Local\Temp\1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1736928426c18fddec09a2865189863f874127ef0886c6a264008603d3a139c5bad971edfc789.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\rahio"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2616
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\rvcbxgivxtgj.vbs"
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4672

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

Query Registry

1

T1012

System Information Discovery

2

T1082

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
9b7b0e7146fc212b96f7d8a6685419e7

SHA1
f2fe994f276ccb77e6c61cfe8fb8465bb7b96fde

SHA256
39b9b36ca2199fce58690ba68de292a1fcddc89391c374b13f31bc83f251be9c

SHA512
0c2b5a63cdad1cb41fb63a7de136779ad306bbb0e4863f3d46d4ea873b7092fa8af16ae4eb8f636a4cb438113d879e0828f86dd4e71cfd893862f908de77885c

Download Submit
C:\Users\Admin\AppData\Local\Temp\rvcbxgivxtgj.vbs

Filesize
828B

MD5
b2f45daeb981cb8e6535c14d9c148df2

SHA1
e8ea24d6c8b1921e7eb1cf838561ecce0a89c8c2

SHA256
064d88659623dbaa45a9a0f64a48e767effd8f5b73a82fd4b15d87f9a609785f

SHA512
02084fa5663f41879187d42836ebb8d9467040ad9f5f7b74a6185e42977415d0bd3d8f942edaa7c2ea7edf35e4082ee2ccce113cce9deb1558f210df7cea9901

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

Filesize
4KB

MD5
f1d2c01ce674ad7d5bad04197c371fbc

SHA1
4bf0ed04d156a3dc6c8d27e134ecbda76d3585aa

SHA256
25b006032deccd628940ef728fffe83b325a85de453a34691f55f570e4460094

SHA512
81cb982cc33dcc27600a8a681c3ec3cc5b9221b95baa45e1ab24479745a9638b9f31d7beeeb1128b3294ff69b44e958c75e25d565f66790c364665caff96ee77

Download Submit
memory/2616-18-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2616-11-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2616-23-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2616-20-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2616-19-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3776-33-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3776-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3776-58-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3776-28-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3776-31-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3776-36-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4392-8-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4392-6-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4392-9-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4392-15-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4392-4-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4552-10-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4552-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4552-7-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4552-25-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4552-3-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

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