remcos | 183c9170d34b3c5e322d5a34d26aaab2bd4acd5338230c4454dc45b6a605bfb8

General

Target

1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.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 8 IoCs

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

resource	yara_rule
behavioral2/memory/5060-8-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3680-18-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3680-21-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3424-20-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/5060-11-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3424-10-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3424-7-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/5060-25-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3424-20-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3424-10-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3424-7-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/5060-8-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/5060-11-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/5060-25-0x0000000000400000-0x0000000000478000-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-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4696 set thread context of 5060	4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe	89
PID 4696 set thread context of 3424	4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe	90
PID 4696 set thread context of 3680	4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe	91

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	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5060	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
5060	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
3680	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
3680	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
5060	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
5060	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3680	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4696 wrote to memory of 5060	4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe	89
PID 4696 wrote to memory of 5060	4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe	89
PID 4696 wrote to memory of 5060	4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe	89
PID 4696 wrote to memory of 3424	4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe	90
PID 4696 wrote to memory of 3424	4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe	90
PID 4696 wrote to memory of 3424	4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe	90
PID 4696 wrote to memory of 3680	4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe	91
PID 4696 wrote to memory of 3680	4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe	91
PID 4696 wrote to memory of 3680	4696	1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe	91

C:\Users\Admin\AppData\Local\Temp\1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.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:4696
- C:\Users\Admin\AppData\Local\Temp\1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\gvyvnnfelu"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:5060
- C:\Users\Admin\AppData\Local\Temp\1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\rxlfogpgzcfkv"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:3424
- C:\Users\Admin\AppData\Local\Temp\1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1729014968354a73a6dcba5a43f0dc2c4d615a55b43a024f5a7b8361ffa956895f39b62184812.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\brqyhyiznkxpfcte"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3680

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
bceafec748117c38e62118513ebd5a4c

SHA1
dc93537db9e8d869a093939ba0dbcbfeb5a0a894

SHA256
46b98068a6765a42831ac10ff40675e59d8d8cfafc367aaa8a14c75c1399f4e6

SHA512
efc45d385b173ea2366a567e15a22d8a32b28126c2fc242945f552d0b7f68c7072dd64b2a9a3f14181a2a59eaf3983e6e3c30347c21d10f4f68a70bb00c06677

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

Filesize
4KB

MD5
79f35c7500a5cc739c1974804710441f

SHA1
24fdf1fa45049fc1a83925c45357bc3058bad060

SHA256
897101ed9da25ab0f10e8ad1aeb8dabc3282ccfdb6d3171dbac758117b8731f4

SHA512
03281e8abecff4e7d1f563596a4fd2513e016b7fbf011a455141460f9448d00b4a4666d2036cb448a8ac9a6feebeb51b366289ffa2ee5524a062fe8869aec61e

Download Submit
memory/3424-10-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3424-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3424-7-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3424-9-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3424-20-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3680-12-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3680-21-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3680-14-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3680-18-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4696-31-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4696-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4696-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4696-28-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4696-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/5060-6-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5060-25-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5060-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5060-11-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5060-8-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

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