remcos | b089218dc7ac4e96a6a9bf13dc51f88d082cc15596692af64724f508719e60a0

General

Target

b089218dc7ac4e96a6a9bf13dc51f88d082cc15596692af64724f508719e60a0.exe
Size

713KB
MD5

857be0d54f844d0b99341fcb38fd7c00
SHA1

a42bb0bbde545d4a94423175a1c9ed6feca461b0
SHA256

b089218dc7ac4e96a6a9bf13dc51f88d082cc15596692af64724f508719e60a0
SHA512

049615cb7171e40a59f5549fedf819ef45663b9beef0f77c69e97f00f2b607db4a05b8f25f380af1d9e04f642bee293b74752d41dcae08994cdd3d3fda920ce2
SSDEEP

12288:46qnCZGZwF0g7A8eYnPM0mERiFa/2XAUoChkXRkMQvfVDldLGSq4W82:OCcaD7A8pPmEU3XHJyXRcvdDNq4Wl

Score

10^/10

remcos remotehost collection credential_access discovery execution rat stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

45.95.169.110:2404

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
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-4W8R37
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/3020-32-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1784-37-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2164-33-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2164-33-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/3020-32-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	wab.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2944	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
592	powershell.exe
2944	wab.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 592 set thread context of 2944	592	powershell.exe	32
PID 2944 set thread context of 3020	2944	wab.exe	34
PID 2944 set thread context of 2164	2944	wab.exe	35
PID 2944 set thread context of 1784	2944	wab.exe	36

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
592	powershell.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 6 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b089218dc7ac4e96a6a9bf13dc51f88d082cc15596692af64724f508719e60a0.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
592	powershell.exe
592	powershell.exe
592	powershell.exe
592	powershell.exe
592	powershell.exe
592	powershell.exe
592	powershell.exe
592	powershell.exe
3020	wab.exe
3020	wab.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
592	powershell.exe
2944	wab.exe
2944	wab.exe
2944	wab.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	592	powershell.exe
Token: SeDebugPrivilege	1784	wab.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 592	1184	b089218dc7ac4e96a6a9bf13dc51f88d082cc15596692af64724f508719e60a0.exe	29
PID 1184 wrote to memory of 592	1184	b089218dc7ac4e96a6a9bf13dc51f88d082cc15596692af64724f508719e60a0.exe	29
PID 1184 wrote to memory of 592	1184	b089218dc7ac4e96a6a9bf13dc51f88d082cc15596692af64724f508719e60a0.exe	29
PID 1184 wrote to memory of 592	1184	b089218dc7ac4e96a6a9bf13dc51f88d082cc15596692af64724f508719e60a0.exe	29
PID 592 wrote to memory of 2944	592	powershell.exe	32
PID 592 wrote to memory of 2944	592	powershell.exe	32
PID 592 wrote to memory of 2944	592	powershell.exe	32
PID 592 wrote to memory of 2944	592	powershell.exe	32
PID 592 wrote to memory of 2944	592	powershell.exe	32
PID 592 wrote to memory of 2944	592	powershell.exe	32
PID 2944 wrote to memory of 3020	2944	wab.exe	34
PID 2944 wrote to memory of 3020	2944	wab.exe	34
PID 2944 wrote to memory of 3020	2944	wab.exe	34
PID 2944 wrote to memory of 3020	2944	wab.exe	34
PID 2944 wrote to memory of 3020	2944	wab.exe	34
PID 2944 wrote to memory of 2164	2944	wab.exe	35
PID 2944 wrote to memory of 2164	2944	wab.exe	35
PID 2944 wrote to memory of 2164	2944	wab.exe	35
PID 2944 wrote to memory of 2164	2944	wab.exe	35
PID 2944 wrote to memory of 2164	2944	wab.exe	35
PID 2944 wrote to memory of 1784	2944	wab.exe	36
PID 2944 wrote to memory of 1784	2944	wab.exe	36
PID 2944 wrote to memory of 1784	2944	wab.exe	36
PID 2944 wrote to memory of 1784	2944	wab.exe	36
PID 2944 wrote to memory of 1784	2944	wab.exe	36

C:\Users\Admin\AppData\Local\Temp\b089218dc7ac4e96a6a9bf13dc51f88d082cc15596692af64724f508719e60a0.exe
"C:\Users\Admin\AppData\Local\Temp\b089218dc7ac4e96a6a9bf13dc51f88d082cc15596692af64724f508719e60a0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle minimized " $nephelite=Get-Content 'C:\Users\Admin\AppData\Local\Temp\belizerens\Anisosepalous\dagbrkninger\Stencilling.Ass243';$Kurrajong=$nephelite.SubString(56568,3);.$Kurrajong($nephelite)"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:592
- - C:\Program Files (x86)\windows mail\wab.exe
    "C:\Program Files (x86)\windows mail\wab.exe"
    3⤵
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2944
  - - C:\Program Files (x86)\windows mail\wab.exe
      "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\actysgcnykoajsqmtna"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:3020
  - - C:\Program Files (x86)\windows mail\wab.exe
      "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\lehrtznomsgftymqcyndcf"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:2164
  - - C:\Program Files (x86)\windows mail\wab.exe
      "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\nymctrgiaayjvfautjhffkoaa"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:1784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\actysgcnykoajsqmtna

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\belizerens\Anisosepalous\dagbrkninger\Kolorimetri.She17

Filesize
377KB

MD5
2c2dd8cd3a8e9d59a9329f41de07faf5

SHA1
5b43e2c03f458531b56d50404cf4a6095632f296

SHA256
c04a936ca71dd30413ba86100ed0fa5a5ba5d73609e778a351314504137a9b15

SHA512
5358a19aa964dc359efebe07a871ad58bdf85e15e784d55c57da7cb74590f9e7d5da5f126a0ab6fe1e28fcc2af297fa45f98b0d019544d0a8735a60868dcae25

Download Submit
C:\Users\Admin\AppData\Local\Temp\belizerens\Anisosepalous\dagbrkninger\Stencilling.Ass243

Filesize
55KB

MD5
6d1f78dce389501cbce9c49abdb72308

SHA1
20d5e675fadb508978d1ca91d79f7bd96091a8ad

SHA256
31600f74bde7637dca69ae3c61c5abfbe2aebf84760afdf8ad410574e6d3f49f

SHA512
b3b7d9fae878e5a2302158a899b0620efbb63dbdb26ae3f26b2f4712192b348241126995f92fb6c11a7add82f83fd7f53971a93ba604e028205f108d2d80b431

Download Submit
memory/592-8-0x0000000074381000-0x0000000074382000-memory.dmp

Filesize
4KB

Download
memory/592-9-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/592-10-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/592-12-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/592-11-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/592-15-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/592-17-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/592-18-0x0000000006640000-0x000000000C11F000-memory.dmp

Filesize
90.9MB

Download
memory/592-19-0x0000000074380000-0x000000007492B000-memory.dmp

Filesize
5.7MB

Download
memory/1784-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1784-37-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1784-36-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2164-33-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2164-31-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2164-30-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2944-47-0x00000000003A0000-0x00000000003B9000-memory.dmp

Filesize
100KB

Download
memory/2944-50-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/2944-59-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/2944-58-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/2944-57-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/2944-20-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/2944-43-0x00000000003A0000-0x00000000003B9000-memory.dmp

Filesize
100KB

Download
memory/2944-56-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/2944-46-0x00000000003A0000-0x00000000003B9000-memory.dmp

Filesize
100KB

Download
memory/2944-48-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/2944-49-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/2944-21-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/2944-51-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/2944-52-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/2944-53-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/2944-54-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/2944-55-0x0000000000650000-0x00000000016B2000-memory.dmp

Filesize
16.4MB

Download
memory/3020-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3020-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3020-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3020-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

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