remcos | 183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8

General

Target

183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
Size

482KB
MD5

374f71f7c95411dfd5f783f61b20cff0
SHA1

0e4ca58a9f9307674f1bf6d6dd12fd81b9d0c33b
SHA256

183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8
SHA512

552f4ff976a7e1860dc7d7f263acb19176ea6332b9a4e2e09154c64cc3dd78c334a42637de26c2b729b16ba0ef41e243e195c87decee6390b85b5c1c5bb444fe
SSDEEP

6144:KTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZXAXkcrST4:KTlrYw1RUh3NFn+N5WfIQIjbs/ZX5T4

Score

10^/10

remcos hiddenhost collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

HiddenHost

C2

204.10.160.167:63749

hiddenhost.duckdns.org:6374

chhidden.duckdns.org: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
true
install_flag
false
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
rcbook
mouse_option
false
mutex
Rmc-4XZH3C
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 10 IoCs

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

resource	yara_rule
behavioral2/memory/812-11-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/524-25-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/524-24-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/812-21-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/524-15-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4732-12-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/812-10-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/812-8-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4732-9-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4732-27-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/524-25-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/524-24-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/524-15-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4732-12-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4732-9-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4732-27-0x0000000000400000-0x0000000000478000-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-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4340 set thread context of 4732	4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe	87
PID 4340 set thread context of 524	4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe	88
PID 4340 set thread context of 812	4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe	89

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	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
812	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
4732	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
812	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
4732	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
4732	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
4732	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	812	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4340 wrote to memory of 4732	4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe	87
PID 4340 wrote to memory of 4732	4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe	87
PID 4340 wrote to memory of 4732	4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe	87
PID 4340 wrote to memory of 524	4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe	88
PID 4340 wrote to memory of 524	4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe	88
PID 4340 wrote to memory of 524	4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe	88
PID 4340 wrote to memory of 812	4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe	89
PID 4340 wrote to memory of 812	4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe	89
PID 4340 wrote to memory of 812	4340	183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe	89

C:\Users\Admin\AppData\Local\Temp\183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
"C:\Users\Admin\AppData\Local\Temp\183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4340
- C:\Users\Admin\AppData\Local\Temp\183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
  C:\Users\Admin\AppData\Local\Temp\183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe /stext "C:\Users\Admin\AppData\Local\Temp\uockaa"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4732
- C:\Users\Admin\AppData\Local\Temp\183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
  C:\Users\Admin\AppData\Local\Temp\183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe /stext "C:\Users\Admin\AppData\Local\Temp\wihcbskdtx"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:524
- C:\Users\Admin\AppData\Local\Temp\183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe
  C:\Users\Admin\AppData\Local\Temp\183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8.exe /stext "C:\Users\Admin\AppData\Local\Temp\gknvclvxpffne"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:812

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\rcbook\logs.dat

Filesize
144B

MD5
375b800f6b7595af26dca002d6ded899

SHA1
613f26632aa846177bfc78a10020875af3baafea

SHA256
68a24cdbcd035d9e16fb5e1fc2be8ba980017b2b3bc054f41fcc3437f7c70110

SHA512
3d04e48db3af231e88ab1679abf1c3132068299ca11d8e68aac2134e9db340b6ffc22cfacea6720788958189f7273643377bdd3d19595f12e205ae7ca28915d4

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

Filesize
4KB

MD5
f1d2c01ce674ad7d5bad04197c371fbc

SHA1
4bf0ed04d156a3dc6c8d27e134ecbda76d3585aa

SHA256
25b006032deccd628940ef728fffe83b325a85de453a34691f55f570e4460094

SHA512
81cb982cc33dcc27600a8a681c3ec3cc5b9221b95baa45e1ab24479745a9638b9f31d7beeeb1128b3294ff69b44e958c75e25d565f66790c364665caff96ee77

Download Submit
memory/524-15-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/524-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/524-25-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/524-24-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/524-14-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/812-7-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/812-11-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/812-10-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/812-8-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/812-21-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/812-5-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/812-16-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/4340-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4340-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4340-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4340-30-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4340-34-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4732-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4732-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4732-4-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4732-9-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4732-12-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

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