remcos | 6c98f35634c02c4cc1d7cbc628ba843c85e80559c1b1d51d44efb3e3bbfc40f6

Analysis

max time kernel
149s
max time network
148s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
27-08-2024 07:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

SecuriteInfo.com.Exploit.CVE-2018-0798.4.21168.15147.rtf
Size

766KB
MD5

c0d48716ea8eef0d46d77cc231fa5371
SHA1

1438d2234f6a36f27aa9b0c2465e71fd607a26c3
SHA256

6c98f35634c02c4cc1d7cbc628ba843c85e80559c1b1d51d44efb3e3bbfc40f6
SHA512

3fecda49692f47df4b3971d505b4a0920c6cff73433656e25144e87755b48f68d5b56aa087a1df204b46c1e8b312d580aef453cb3815377030e788047299e73b
SSDEEP

6144:pwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwA1:5o6

Score

10^/10

remcos aug 26 collection credential_access discovery execution rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

AUG 26

sungito2.ddns.net:6509

154.216.19.222:5532

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-LXAZN2
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 3 IoCs

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

resource	yara_rule
behavioral1/memory/1912-64-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2648-63-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2180-69-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1912-64-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2648-63-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Blocklisted process makes network request 1 IoCs

flow	pid	Process
4	2108	EQNEDT32.EXE

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
740	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 5 IoCs

pid	Process
2848	sinbless09185.exe
1696	sinbless09185.exe
2648	sinbless09185.exe
1912	sinbless09185.exe
2180	sinbless09185.exe

Loads dropped DLL 1 IoCs

pid	Process
2108	EQNEDT32.EXE

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-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	sinbless09185.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2848 set thread context of 1696	2848	sinbless09185.exe	38
PID 1696 set thread context of 2648	1696	sinbless09185.exe	40
PID 1696 set thread context of 1912	1696	sinbless09185.exe	41
PID 1696 set thread context of 2180	1696	sinbless09185.exe	42

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

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 8 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	sinbless09185.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sinbless09185.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sinbless09185.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sinbless09185.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EQNEDT32.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sinbless09185.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Office loads VBA resources, possible macro or embedded object present

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
2108	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3016	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
740	powershell.exe
2648	sinbless09185.exe
2648	sinbless09185.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1696	sinbless09185.exe
1696	sinbless09185.exe
1696	sinbless09185.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	740	powershell.exe
Token: SeDebugPrivilege	2180	sinbless09185.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3016	WINWORD.EXE
3016	WINWORD.EXE
1696	sinbless09185.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2848	2108	EQNEDT32.EXE	32
PID 2108 wrote to memory of 2848	2108	EQNEDT32.EXE	32
PID 2108 wrote to memory of 2848	2108	EQNEDT32.EXE	32
PID 2108 wrote to memory of 2848	2108	EQNEDT32.EXE	32
PID 3016 wrote to memory of 2656	3016	WINWORD.EXE	35
PID 3016 wrote to memory of 2656	3016	WINWORD.EXE	35
PID 3016 wrote to memory of 2656	3016	WINWORD.EXE	35
PID 3016 wrote to memory of 2656	3016	WINWORD.EXE	35
PID 2848 wrote to memory of 740	2848	sinbless09185.exe	36
PID 2848 wrote to memory of 740	2848	sinbless09185.exe	36
PID 2848 wrote to memory of 740	2848	sinbless09185.exe	36
PID 2848 wrote to memory of 740	2848	sinbless09185.exe	36
PID 2848 wrote to memory of 1696	2848	sinbless09185.exe	38
PID 2848 wrote to memory of 1696	2848	sinbless09185.exe	38
PID 2848 wrote to memory of 1696	2848	sinbless09185.exe	38
PID 2848 wrote to memory of 1696	2848	sinbless09185.exe	38
PID 2848 wrote to memory of 1696	2848	sinbless09185.exe	38
PID 2848 wrote to memory of 1696	2848	sinbless09185.exe	38
PID 2848 wrote to memory of 1696	2848	sinbless09185.exe	38
PID 2848 wrote to memory of 1696	2848	sinbless09185.exe	38
PID 2848 wrote to memory of 1696	2848	sinbless09185.exe	38
PID 2848 wrote to memory of 1696	2848	sinbless09185.exe	38
PID 2848 wrote to memory of 1696	2848	sinbless09185.exe	38
PID 2848 wrote to memory of 1696	2848	sinbless09185.exe	38
PID 2848 wrote to memory of 1696	2848	sinbless09185.exe	38
PID 1696 wrote to memory of 2648	1696	sinbless09185.exe	40
PID 1696 wrote to memory of 2648	1696	sinbless09185.exe	40
PID 1696 wrote to memory of 2648	1696	sinbless09185.exe	40
PID 1696 wrote to memory of 2648	1696	sinbless09185.exe	40
PID 1696 wrote to memory of 2648	1696	sinbless09185.exe	40
PID 1696 wrote to memory of 1912	1696	sinbless09185.exe	41
PID 1696 wrote to memory of 1912	1696	sinbless09185.exe	41
PID 1696 wrote to memory of 1912	1696	sinbless09185.exe	41
PID 1696 wrote to memory of 1912	1696	sinbless09185.exe	41
PID 1696 wrote to memory of 1912	1696	sinbless09185.exe	41
PID 1696 wrote to memory of 2180	1696	sinbless09185.exe	42
PID 1696 wrote to memory of 2180	1696	sinbless09185.exe	42
PID 1696 wrote to memory of 2180	1696	sinbless09185.exe	42
PID 1696 wrote to memory of 2180	1696	sinbless09185.exe	42
PID 1696 wrote to memory of 2180	1696	sinbless09185.exe	42

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Exploit.CVE-2018-0798.4.21168.15147.rtf"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2656

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\AppData\Roaming\sinbless09185.exe
  "C:\Users\Admin\AppData\Roaming\sinbless09185.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2848
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\sinbless09185.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:740
- - C:\Users\Admin\AppData\Roaming\sinbless09185.exe
    "C:\Users\Admin\AppData\Roaming\sinbless09185.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1696
  - - C:\Users\Admin\AppData\Roaming\sinbless09185.exe
      C:\Users\Admin\AppData\Roaming\sinbless09185.exe /stext "C:\Users\Admin\AppData\Local\Temp\ycufbnwgkmkpaqsn"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2648
  - - C:\Users\Admin\AppData\Roaming\sinbless09185.exe
      C:\Users\Admin\AppData\Roaming\sinbless09185.exe /stext "C:\Users\Admin\AppData\Local\Temp\jwhycghiyucckfgrhkt"
      4⤵
      Executes dropped EXE
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:1912
  - - C:\Users\Admin\AppData\Roaming\sinbless09185.exe
      C:\Users\Admin\AppData\Roaming\sinbless09185.exe /stext "C:\Users\Admin\AppData\Local\Temp\tznqdyrbmcuhnlcdyvoenm"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:2180

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Exploitation for Client Execution

T1203

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\remcos\logs.dat

Filesize
302B

MD5
ed73f2116db785f38b0dd8006436924a

SHA1
4587cbd067d59d3a91d2d9420134e6cf575a6830

SHA256
4804b6a11d8dfacfbc1292bfa08331348b151732cd12110a92bc778c35e44c40

SHA512
a0c82e45bce319b0c440e5e5dddca555f3a38387c01c4812bc6cd0363b7058afe46dc511971bfc266ba53d20656c6aa164b8cc6ddf73089510edc3ad3ba6d009

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

Filesize
19KB

MD5
0a4ef8a4f36b90be3ef6e7fb285a218d

SHA1
a43eb873c4eb529f296eb11028fd64fb2dd269d5

SHA256
c9fef625740a9d9e9f39e67f2bdde104b053875f35d79609d29a830ea2975f4b

SHA512
9708c3e2c8715c11c512c590bb8da9d7a0815a6bfff24db6b159ac352f42637b1a6585ba5dab58ad6b12d1de305e9b312db2ab03d36434c236a3e7a50b17bc9f

Download Submit
\Users\Admin\AppData\Roaming\sinbless09185.exe

Filesize
1.0MB

MD5
a08178d5e1ef372e4336dd5a67487d30

SHA1
500fb9dede91da0c3473068e42cfb6507d281a2f

SHA256
235aa199f4d6f034e1c67555681418678516b926427fcdeb003f41374ca9f468

SHA512
7f0c5a4b14f94b022c70459fb439c5d4d8d887cdff7522cd1dc43ecda4490d932bf3292d772a3a1a205e9ed853fae1fd8cd3af52979be524abd1957e7f56e467

Download Submit
memory/1696-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-131-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-122-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-123-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1696-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-130-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1696-79-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1696-80-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1696-76-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1912-64-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1912-59-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1912-62-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2180-69-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2180-66-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2180-68-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2180-65-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2648-61-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2648-56-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2648-63-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2848-15-0x0000000000280000-0x0000000000298000-memory.dmp

Filesize
96KB

Download
memory/2848-14-0x00000000008E0000-0x00000000009E8000-memory.dmp

Filesize
1.0MB

Download
memory/2848-17-0x0000000005050000-0x0000000005110000-memory.dmp

Filesize
768KB

Download
memory/3016-16-0x000000007193D000-0x0000000071948000-memory.dmp

Filesize
44KB

Download
memory/3016-119-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/3016-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/3016-0-0x000000002FE01000-0x000000002FE02000-memory.dmp

Filesize
4KB

Download
memory/3016-2-0x000000007193D000-0x0000000071948000-memory.dmp

Filesize
44KB

Download