remcos | 7a9e36961ab5b2ab759ec2196d40618b1f43c5a04c40c01b31cfb4ea1adfc347

Analysis

max time kernel
150s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16/10/2024, 03:31

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General

Target
rSOD219ISF-____.scr.exe
Size 918KB
Sample241016-d22qdsvckp
SHA256 7a9e36961ab5b2ab759ec2196d40618b1f43c5a04c40c01b31cfb4ea1adfc347
MD5 c50245598f59f8ef84262dd0d82d6e53
SHA1 7da1807f04997b506e0ae563e2064ebc050095af
SHA512 e34997748b88c9a28ff3cc16e04d1b12bb5ed9eebde0666d5fdcbbd0d2e8b0c98931d23b84875f05140a67f7160e182bd57d85608ef8e56eeac1104bf8840756
SSDEEP 24576:gRne6cHoCTTWJM8ipw1x6a/agcW8QhGM31u74Pw:gRne6cINh1XCgcW8ulw
MD5 SHA1 SHA512 SSDEEP

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

Detected Nirsoft tools 3 IoCs

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

resource	yara_rule
behavioral2/memory/3844-64-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3920-58-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/5112-56-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3920-58-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/5112-56-0x0000000000400000-0x0000000000478000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	rSOD219ISF-____.scr.exe

Executes dropped EXE 6 IoCs

pid	Process
3480	Adobe.exe
4876	Adobe.exe
5112	Adobe.exe
3920	Adobe.exe
3668	Adobe.exe
3844	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

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	rSOD219ISF-____.scr.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	rSOD219ISF-____.scr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\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

description	pid	Process	procid_target
PID 1700 set thread context of 688	1700	rSOD219ISF-____.scr.exe	94
PID 3480 set thread context of 4876	3480	Adobe.exe	99
PID 4876 set thread context of 5112	4876	Adobe.exe	100
PID 4876 set thread context of 3920	4876	Adobe.exe	101
PID 4876 set thread context of 3844	4876	Adobe.exe	103

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

description	ioc	Process
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	rSOD219ISF-____.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rSOD219ISF-____.scr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5112	Adobe.exe
5112	Adobe.exe
3844	Adobe.exe
3844	Adobe.exe
5112	Adobe.exe
5112	Adobe.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
4876	Adobe.exe
4876	Adobe.exe
4876	Adobe.exe
4876	Adobe.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3844	Adobe.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 688	1700	rSOD219ISF-____.scr.exe	94
PID 1700 wrote to memory of 688	1700	rSOD219ISF-____.scr.exe	94
PID 1700 wrote to memory of 688	1700	rSOD219ISF-____.scr.exe	94
PID 1700 wrote to memory of 688	1700	rSOD219ISF-____.scr.exe	94
PID 1700 wrote to memory of 688	1700	rSOD219ISF-____.scr.exe	94
PID 1700 wrote to memory of 688	1700	rSOD219ISF-____.scr.exe	94
PID 1700 wrote to memory of 688	1700	rSOD219ISF-____.scr.exe	94
PID 1700 wrote to memory of 688	1700	rSOD219ISF-____.scr.exe	94
PID 1700 wrote to memory of 688	1700	rSOD219ISF-____.scr.exe	94
PID 1700 wrote to memory of 688	1700	rSOD219ISF-____.scr.exe	94
PID 1700 wrote to memory of 688	1700	rSOD219ISF-____.scr.exe	94
PID 1700 wrote to memory of 688	1700	rSOD219ISF-____.scr.exe	94
PID 688 wrote to memory of 3480	688	rSOD219ISF-____.scr.exe	95
PID 688 wrote to memory of 3480	688	rSOD219ISF-____.scr.exe	95
PID 688 wrote to memory of 3480	688	rSOD219ISF-____.scr.exe	95
PID 3480 wrote to memory of 4876	3480	Adobe.exe	99
PID 3480 wrote to memory of 4876	3480	Adobe.exe	99
PID 3480 wrote to memory of 4876	3480	Adobe.exe	99
PID 3480 wrote to memory of 4876	3480	Adobe.exe	99
PID 3480 wrote to memory of 4876	3480	Adobe.exe	99
PID 3480 wrote to memory of 4876	3480	Adobe.exe	99
PID 3480 wrote to memory of 4876	3480	Adobe.exe	99
PID 3480 wrote to memory of 4876	3480	Adobe.exe	99
PID 3480 wrote to memory of 4876	3480	Adobe.exe	99
PID 3480 wrote to memory of 4876	3480	Adobe.exe	99
PID 3480 wrote to memory of 4876	3480	Adobe.exe	99
PID 3480 wrote to memory of 4876	3480	Adobe.exe	99
PID 4876 wrote to memory of 5112	4876	Adobe.exe	100
PID 4876 wrote to memory of 5112	4876	Adobe.exe	100
PID 4876 wrote to memory of 5112	4876	Adobe.exe	100
PID 4876 wrote to memory of 5112	4876	Adobe.exe	100
PID 4876 wrote to memory of 3920	4876	Adobe.exe	101
PID 4876 wrote to memory of 3920	4876	Adobe.exe	101
PID 4876 wrote to memory of 3920	4876	Adobe.exe	101
PID 4876 wrote to memory of 3920	4876	Adobe.exe	101
PID 4876 wrote to memory of 3668	4876	Adobe.exe	102
PID 4876 wrote to memory of 3668	4876	Adobe.exe	102
PID 4876 wrote to memory of 3668	4876	Adobe.exe	102
PID 4876 wrote to memory of 3844	4876	Adobe.exe	103
PID 4876 wrote to memory of 3844	4876	Adobe.exe	103
PID 4876 wrote to memory of 3844	4876	Adobe.exe	103
PID 4876 wrote to memory of 3844	4876	Adobe.exe	103

C:\Users\Admin\AppData\Local\Temp\rSOD219ISF-____.scr.exe
"C:\Users\Admin\AppData\Local\Temp\rSOD219ISF-____.scr.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Users\Admin\AppData\Local\Temp\rSOD219ISF-____.scr.exe
  "C:\Users\Admin\AppData\Local\Temp\rSOD219ISF-____.scr.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:688
- - 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:3480
  - - 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:4876
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\fodjkkueffylwnltxu"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:5112
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\pijbkdfgsnqygthxgfurl"
        5⤵
        Executes dropped EXE
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:3920
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\zkomlnpagvidjivjxqpswswq"
        5⤵
        Executes dropped EXE
        
        PID:3668
    - - C:\ProgramData\Adobe\Adobe.exe
        
        C:\ProgramData\Adobe\Adobe.exe /stext "C:\Users\Admin\AppData\Local\Temp\zkomlnpagvidjivjxqpswswq"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3844

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

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Downloads

Adobe.exe

Path C:\ProgramData\Adobe\Adobe.exe
Size 918KB
SHA256 7a9e36961ab5b2ab759ec2196d40618b1f43c5a04c40c01b31cfb4ea1adfc347
MD5 c50245598f59f8ef84262dd0d82d6e53
SHA1 7da1807f04997b506e0ae563e2064ebc050095af
SHA512 e34997748b88c9a28ff3cc16e04d1b12bb5ed9eebde0666d5fdcbbd0d2e8b0c98931d23b84875f05140a67f7160e182bd57d85608ef8e56eeac1104bf8840756
SSDEEP 24576:gRne6cHoCTTWJM8ipw1x6a/agcW8QhGM31u74Pw:gRne6cINh1XCgcW8ulw
MD5 SHA1 SHA512 SSDEEP

Submit Download

fodjkkueffylwnltxu

Path C:\Users\Admin\AppData\Local\Temp\fodjkkueffylwnltxu
Size 4KB
SHA256 b333f8c736c701bc826886f395d928731850cbce6db77be752b3cf7979114904
MD5 bc25ccf39db8626dc249529bcc8c5639
SHA1 3e9cbdb20a0970a3c13719a2f289d210cdcc9e1d
SHA512 9a546127bddc1d187e674cda82e6c5046cac7f3e6f9515aed68d5bff2264b9d679d857dd97270e10826cd11ce2d92d82dd7f9801e19027e346b60bcc814cca1a
SSDEEP 48:wvvv0n4xfvvcn4xfdvv0n4xBvv0n4xakvv0n47:mvi4xvK4p1vi4Pvi4bvi47
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/688-14-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/688-30-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/688-17-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/688-16-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/688-13-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/1700-7-0x00000000063E0000-0x00000000063EA000-memory.dmp

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memory/1700-6-0x0000000075260000-0x0000000075A10000-memory.dmp

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memory/1700-9-0x0000000075260000-0x0000000075A10000-memory.dmp

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memory/1700-10-0x0000000006F10000-0x0000000006F22000-memory.dmp

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memory/1700-11-0x0000000008A70000-0x0000000008B30000-memory.dmp

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memory/1700-12-0x000000000B240000-0x000000000B2DC000-memory.dmp

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memory/1700-0-0x000000007526E000-0x000000007526F000-memory.dmp

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memory/1700-8-0x000000007526E000-0x000000007526F000-memory.dmp

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memory/1700-5-0x0000000006060000-0x00000000063B4000-memory.dmp

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memory/1700-4-0x0000000005700000-0x00000000057AA000-memory.dmp

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memory/1700-19-0x0000000075260000-0x0000000075A10000-memory.dmp

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memory/1700-3-0x00000000055B0000-0x0000000005642000-memory.dmp

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memory/1700-2-0x0000000005AB0000-0x0000000006054000-memory.dmp

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memory/1700-1-0x0000000000C70000-0x0000000000D5A000-memory.dmp

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memory/3480-34-0x0000000074B4E000-0x0000000074B4F000-memory.dmp

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memory/3480-33-0x0000000074B40000-0x00000000752F0000-memory.dmp

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memory/3480-32-0x0000000005A70000-0x0000000005DC4000-memory.dmp

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memory/3480-35-0x0000000074B40000-0x00000000752F0000-memory.dmp

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memory/3480-31-0x0000000074B4E000-0x0000000074B4F000-memory.dmp

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memory/3480-42-0x0000000074B40000-0x00000000752F0000-memory.dmp

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memory/3844-64-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/3844-57-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/3844-60-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/3920-51-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/3920-58-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/3920-55-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/4876-39-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-74-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-44-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-43-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-48-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-41-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-80-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-71-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/4876-67-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/4876-79-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-78-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-40-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-45-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-70-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/4876-72-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-73-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-46-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-75-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-76-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4876-77-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/5112-53-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/5112-49-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/5112-56-0x0000000000400000-0x0000000000478000-memory.dmp

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