remcos | c9c5b7bbbac48c507f825ef76acab3e999d89c15ebe265dfaffa7131fc405510

General

Target

17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
Size

483KB
MD5

57d3d8dd95d86ac35f4b428da9cc1e30
SHA1

2d0e4dacf5c0f063bdf95f120b505419bc51cfe0
SHA256

c9c5b7bbbac48c507f825ef76acab3e999d89c15ebe265dfaffa7131fc405510
SHA512

d63b343e25bb3f3fe7f9b519217503039aaee8d6f318d6e332698bf1268c680bfd2ed9b97c5c365cee0318050864c99081205a35898ade5b5587401198a712d1
SSDEEP

12288:wTlrYw1RUh3NFn+N5WfIQIjbs/ZBXVT4:ApRUh3NDfIQIjeZV

Score

10^/10

remcos remotehost collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

idabo.duckdns.org:6875

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-I89M3S
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 9 IoCs

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

resource	yara_rule
behavioral2/memory/1876-14-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3164-16-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2184-18-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1876-24-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2184-15-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1876-13-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3164-10-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2184-9-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3164-27-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2184-18-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2184-15-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2184-9-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3164-16-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3164-10-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3164-27-0x0000000000400000-0x0000000000478000-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-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1156 set thread context of 3164	1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	87
PID 1156 set thread context of 2184	1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	88
PID 1156 set thread context of 1876	1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.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	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1876	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
1876	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
3164	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
3164	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
3164	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
3164	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1876	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1156 wrote to memory of 3164	1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	87
PID 1156 wrote to memory of 3164	1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	87
PID 1156 wrote to memory of 3164	1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	87
PID 1156 wrote to memory of 2184	1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	88
PID 1156 wrote to memory of 2184	1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	88
PID 1156 wrote to memory of 2184	1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	88
PID 1156 wrote to memory of 1876	1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	89
PID 1156 wrote to memory of 1876	1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	89
PID 1156 wrote to memory of 1876	1156	17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe	89

C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.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:1156
- C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\smzmtuhviwldqgaawvlzjrrdqesvob"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3164
- C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\dgefuespwediamwmngyamvmmzkkepmsui"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:2184
- C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17288990442d9287b54e998847fd080b08b8b80367cf03b841168c7aefaacbc7ff3e22ca17806.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\firqm"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1876

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
938bf4b6997c0a6ea5290b984e379f9b

SHA1
a866471158b392f19de52a5041769b9f77ee5419

SHA256
e3f58b46a3d08e0176095229e05f2f43773514321d4b05d77784743fdc6ce25a

SHA512
258592f8bce9498164aa3b645cd491e146829adfb84eb16aa67a2a94c4c8c51a7666fb34b143b7da39a629968312157d35ae4adc373e69ff6840fcdd69a711c0

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

Filesize
4KB

MD5
60a0bdc1cf495566ff810105d728af4a

SHA1
243403c535f37a1f3d5f307fc3fb8bdd5cbcf6e6

SHA256
fd12da9f9b031f9fa742fa73bbb2c9265f84f49069b7c503e512427b93bce6d2

SHA512
4445f214dbf5a01d703f22a848b56866f3f37b399de503f99d40448dc86459bf49d1fa487231f23c080a559017d72bcd9f6c13562e1f0bd53c1c9a89e73306a5

Download Submit
memory/1156-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1156-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1156-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1156-34-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1156-30-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1876-8-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1876-14-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1876-24-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1876-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1876-12-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2184-18-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2184-7-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2184-9-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2184-15-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2184-5-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3164-6-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3164-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3164-10-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3164-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3164-16-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

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