remcos | e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda

General

Target

1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
Size

483KB
MD5

fbfed304aa0320505a322b92eb198d68
SHA1

033eb7a422a4d4d5e61d537a4b8225b335ec153c
SHA256

e9e4c938b340a17f41010be30d4db8ef9c0bceb7743b74b3a348b0f631647cda
SHA512

d4ebaa88fdac70c8dfe486ffd6796848f7f2e9ca89baf5131dde3e9e58b85f7d9eb96da33c00f7500903bc065e0bfc87eb34823f7428c6989424c82c14520a41
SSDEEP

12288:wTlrYw1RUh3NFn+N5WfIQIjbs/ZBOoT4:ApRUh3NDfIQIjeZ

Score

10^/10

remcos remotehost collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

45.90.89.98:8243

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
loat
keylog_path
%Temp%
mouse_option
false
mutex
Rmc-O0U3JA
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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Detected Nirsoft tools 7 IoCs

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

resource	yara_rule
behavioral2/memory/1996-11-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2968-14-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2032-22-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2032-26-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1996-12-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2968-10-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1996-28-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2968-14-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2968-10-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1996-11-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1996-12-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1996-28-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Reads user/profile data of web browsers 2 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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2644 set thread context of 1996	2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe	91
PID 2644 set thread context of 2968	2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe	92
PID 2644 set thread context of 2032	2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe	93

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	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1996	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
1996	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
2032	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
2032	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
1996	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
1996	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2032	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 1996	2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe	91
PID 2644 wrote to memory of 1996	2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe	91
PID 2644 wrote to memory of 1996	2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe	91
PID 2644 wrote to memory of 2968	2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe	92
PID 2644 wrote to memory of 2968	2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe	92
PID 2644 wrote to memory of 2968	2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe	92
PID 2644 wrote to memory of 2032	2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe	93
PID 2644 wrote to memory of 2032	2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe	93
PID 2644 wrote to memory of 2032	2644	1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe	93

C:\Users\Admin\AppData\Local\Temp\1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.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:2644
- C:\Users\Admin\AppData\Local\Temp\1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\cbrowkrgilqhoawstksbyaosclykpldf"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1996
- C:\Users\Admin\AppData\Local\Temp\1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\edwg"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:2968
- C:\Users\Admin\AppData\Local\Temp\1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1726170845fe5c472375696bf668b3b528e9effd5f9dfb1a2108bcc6e243a091f1afc5c794629.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\oxcrqvnb"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2032

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\cbrowkrgilqhoawstksbyaosclykpldf

Filesize
4KB

MD5
16f4f7c4051f4bbdaa93a1ca80690065

SHA1
750cacbdd2d089a88119374560d6ac004954e90e

SHA256
6c4559e4413cccaeab73cad48ffd804506c95566e4d6a3f5ae64017a33ea6ec2

SHA512
cb0f68d393ad03a5c802a2978ff7b12e20911bac5e27200c2df16d5d3f63dfc2387c0cd1a9075d8e4ba9ae804a6b61225575e2f42b3ef024e863d5b172417964

Download Submit
C:\Users\Admin\AppData\Local\Temp\loat\logs.dat

Filesize
144B

MD5
cf20ef48e7245dcd701953e15f1a813f

SHA1
20a79701038eb41fcf630625f1d711bd7feefe1b

SHA256
ea5819838ec5681ea919ccfa444fca69a99b73caee3c17884cbf2004a6362a2b

SHA512
be02e13df893ea1cf0b6875ef9070e15c85ba6b84b7cd5d44a4a06d3842226c1a434e2dc887e2b683ef1d444cc4502e4e0510cd040ffc688fd8a3de857ddc005

Download Submit
memory/1996-12-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1996-11-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1996-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1996-3-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1996-8-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2032-21-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2032-22-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2032-26-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2032-15-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2032-17-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2032-24-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/2644-34-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2644-31-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2644-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2644-35-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2644-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2968-5-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2968-14-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2968-9-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2968-10-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download

Analysis

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