remcos | b2a1e0e508be9c7546a8af45c72f2032f067ac036f03ec0c8309b368b195a65c

Analysis

max time kernel
149s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28-11-2024 16:41

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General

Target

Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe
Size

1.1MB
MD5

bc74e2d086d7bef42c3604c1dafc3edb
SHA1

f3ba507bee10af7e9fd64b1c70fecb975e216073
SHA256

b2a1e0e508be9c7546a8af45c72f2032f067ac036f03ec0c8309b368b195a65c
SHA512

0844fb41b40e29c363b7c62f39819569f405f6c038bc904afe1d2296ec08f3f339aef3f5e132b81be25819a3c90013b86af64e6737126175d8de88ec1cfd972f
SSDEEP

24576:V2xjyUVJKPWlHhWp19hnxRpPNX7HLQUqckP9LbuLCnYng:IUUVJVlHkpVnx3d7HLpEVLtnY

Score

10^/10

remcos remotehost collection discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

104.250.180.178:7902

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
Adobe.exe
copy_folder
Adobe
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Adobe-OTOIRK
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
Remcos family
remcos

Detected Nirsoft tools 3 IoCs

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

Processes:

resource	yara_rule
behavioral2/memory/3028-59-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1792-57-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2488-56-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/1792-57-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/2488-56-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe

Executes dropped EXE 5 IoCs

Processes:

Adobe.exeAdobe.exeAdobe.exeAdobe.exeAdobe.exe

pid	Process
3152	Adobe.exe
1356	Adobe.exe
2488	Adobe.exe
1792	Adobe.exe
3028	Adobe.exe

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

Processes:

Adobe.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	Adobe.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exeAdobe.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe

Suspicious use of SetThreadContext 5 IoCs

Processes:

Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exeAdobe.exeAdobe.exe

description	pid	Process	procid_target
PID 4972 set thread context of 1816	4972	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	89
PID 3152 set thread context of 1356	3152	Adobe.exe	93
PID 1356 set thread context of 2488	1356	Adobe.exe	94
PID 1356 set thread context of 1792	1356	Adobe.exe	95
PID 1356 set thread context of 3028	1356	Adobe.exe	96

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 7 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

Processes:

Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exeDraft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exeAdobe.exeAdobe.exeAdobe.exeAdobe.exeAdobe.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

Adobe.exeAdobe.exe

pid	Process
2488	Adobe.exe
2488	Adobe.exe
3028	Adobe.exe
3028	Adobe.exe
2488	Adobe.exe
2488	Adobe.exe

Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

Adobe.exe

pid	Process
1356	Adobe.exe
1356	Adobe.exe
1356	Adobe.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Adobe.exe

description	pid	Process
Token: SeDebugPrivilege	3028	Adobe.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exeDraft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exeAdobe.exeAdobe.exe

description	pid	Process	procid_target
PID 4972 wrote to memory of 1816	4972	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	89
PID 4972 wrote to memory of 1816	4972	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	89
PID 4972 wrote to memory of 1816	4972	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	89
PID 4972 wrote to memory of 1816	4972	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	89
PID 4972 wrote to memory of 1816	4972	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	89
PID 4972 wrote to memory of 1816	4972	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	89
PID 4972 wrote to memory of 1816	4972	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	89
PID 4972 wrote to memory of 1816	4972	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	89
PID 4972 wrote to memory of 1816	4972	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	89
PID 4972 wrote to memory of 1816	4972	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	89
PID 4972 wrote to memory of 1816	4972	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	89
PID 4972 wrote to memory of 1816	4972	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	89
PID 1816 wrote to memory of 3152	1816	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	90
PID 1816 wrote to memory of 3152	1816	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	90
PID 1816 wrote to memory of 3152	1816	Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe	90
PID 3152 wrote to memory of 1356	3152	Adobe.exe	93
PID 3152 wrote to memory of 1356	3152	Adobe.exe	93
PID 3152 wrote to memory of 1356	3152	Adobe.exe	93
PID 3152 wrote to memory of 1356	3152	Adobe.exe	93
PID 3152 wrote to memory of 1356	3152	Adobe.exe	93
PID 3152 wrote to memory of 1356	3152	Adobe.exe	93
PID 3152 wrote to memory of 1356	3152	Adobe.exe	93
PID 3152 wrote to memory of 1356	3152	Adobe.exe	93
PID 3152 wrote to memory of 1356	3152	Adobe.exe	93
PID 3152 wrote to memory of 1356	3152	Adobe.exe	93
PID 3152 wrote to memory of 1356	3152	Adobe.exe	93
PID 3152 wrote to memory of 1356	3152	Adobe.exe	93
PID 1356 wrote to memory of 2488	1356	Adobe.exe	94
PID 1356 wrote to memory of 2488	1356	Adobe.exe	94
PID 1356 wrote to memory of 2488	1356	Adobe.exe	94
PID 1356 wrote to memory of 2488	1356	Adobe.exe	94
PID 1356 wrote to memory of 1792	1356	Adobe.exe	95
PID 1356 wrote to memory of 1792	1356	Adobe.exe	95
PID 1356 wrote to memory of 1792	1356	Adobe.exe	95
PID 1356 wrote to memory of 1792	1356	Adobe.exe	95
PID 1356 wrote to memory of 3028	1356	Adobe.exe	96
PID 1356 wrote to memory of 3028	1356	Adobe.exe	96
PID 1356 wrote to memory of 3028	1356	Adobe.exe	96
PID 1356 wrote to memory of 3028	1356	Adobe.exe	96

C:\Users\Admin\AppData\Local\Temp\Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe
"C:\Users\Admin\AppData\Local\Temp\Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4972
- C:\Users\Admin\AppData\Local\Temp\Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe
  "C:\Users\Admin\AppData\Local\Temp\Draft - HBL# WSPAE1311198 VSL# COSCO NETHERLANDS V-067E.scr.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1816
- - C:\ProgramData\Adobe\Adobe.exe
    "C:\ProgramData\Adobe\Adobe.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3152
  - - C:\ProgramData\Adobe\Adobe.exe
      "C:\ProgramData\Adobe\Adobe.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:1356
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\rkjklbduu"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:2488
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\beouetoniklf"
        5⤵
        Executes dropped EXE
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:1792
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\egtnemgpvsdsjfx"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

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\Adobe\Adobe.exe

Filesize
1.1MB

MD5
bc74e2d086d7bef42c3604c1dafc3edb

SHA1
f3ba507bee10af7e9fd64b1c70fecb975e216073

SHA256
b2a1e0e508be9c7546a8af45c72f2032f067ac036f03ec0c8309b368b195a65c

SHA512
0844fb41b40e29c363b7c62f39819569f405f6c038bc904afe1d2296ec08f3f339aef3f5e132b81be25819a3c90013b86af64e6737126175d8de88ec1cfd972f

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

Filesize
4KB

MD5
f1d2c01ce674ad7d5bad04197c371fbc

SHA1
4bf0ed04d156a3dc6c8d27e134ecbda76d3585aa

SHA256
25b006032deccd628940ef728fffe83b325a85de453a34691f55f570e4460094

SHA512
81cb982cc33dcc27600a8a681c3ec3cc5b9221b95baa45e1ab24479745a9638b9f31d7beeeb1128b3294ff69b44e958c75e25d565f66790c364665caff96ee77

Download Submit
memory/1356-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-69-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1356-68-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1356-65-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1356-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1356-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1792-50-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1792-57-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1792-53-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1816-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1816-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1816-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1816-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1816-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2488-56-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2488-51-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2488-48-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3028-59-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3028-54-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3028-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3152-30-0x0000000074D80000-0x0000000075530000-memory.dmp

Filesize
7.7MB

Download
memory/3152-39-0x0000000074D80000-0x0000000075530000-memory.dmp

Filesize
7.7MB

Download
memory/3152-29-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

Filesize
4KB

Download
memory/3152-31-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

Filesize
4KB

Download
memory/3152-32-0x0000000074D80000-0x0000000075530000-memory.dmp

Filesize
7.7MB

Download
memory/4972-18-0x0000000075390000-0x0000000075B40000-memory.dmp

Filesize
7.7MB

Download
memory/4972-0-0x000000007539E000-0x000000007539F000-memory.dmp

Filesize
4KB

Download
memory/4972-10-0x0000000008900000-0x00000000089C4000-memory.dmp

Filesize
784KB

Download
memory/4972-9-0x0000000075390000-0x0000000075B40000-memory.dmp

Filesize
7.7MB

Download
memory/4972-8-0x000000007539E000-0x000000007539F000-memory.dmp

Filesize
4KB

Download
memory/4972-7-0x0000000005C40000-0x0000000005C58000-memory.dmp

Filesize
96KB

Download
memory/4972-6-0x0000000005BA0000-0x0000000005C3C000-memory.dmp

Filesize
624KB

Download
memory/4972-5-0x0000000005890000-0x000000000589A000-memory.dmp

Filesize
40KB

Download
memory/4972-4-0x0000000075390000-0x0000000075B40000-memory.dmp

Filesize
7.7MB

Download
memory/4972-3-0x00000000058B0000-0x0000000005942000-memory.dmp

Filesize
584KB

Download
memory/4972-2-0x0000000005F80000-0x0000000006524000-memory.dmp

Filesize
5.6MB

Download
memory/4972-1-0x0000000000F00000-0x0000000001018000-memory.dmp

Filesize
1.1MB

Download