djvu | d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81

Analysis

max time kernel
147s
max time network
137s
platform
windows10_x64
resource
win10v20210408
submitted
14/09/2021, 06:39

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General

Target
d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe
Size 755KB
Sample210914-hen81aabdr
SHA256 d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81
MD5 2fc229a6b103c773ad1f8805f1a484cf
SHA1 96c021d336fdeba695ef9d9de3a22915cbee66dc
SHA512 66b291694056d8ce82e499c7d3ef9cc7f829aa3348ff0d37e0402dcce55730927b5cbffc4a5901d7a5ddb4f970f45da0e0926fc98b64a63f79a23680097b8833
MD5 SHA1 SHA512

Score

10^/10

djvu vidar 517 discovery persistence ransomware spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

40.5

Botnet

https://gheorghip.tumblr.com/

Attributes

profile_id
517

Signatures

Detected Djvu ransomware 6 IoCs

resource	yara_rule
behavioral2/memory/904-114-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/904-115-0x0000000000424141-mapping.dmp	family_djvu
behavioral2/memory/804-116-0x0000000002FC0000-0x00000000030DB000-memory.dmp	family_djvu
behavioral2/memory/904-117-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1968-122-0x0000000000424141-mapping.dmp	family_djvu
behavioral2/memory/1968-123-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
suricata
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata

Vidar Stealer 4 IoCs

stealer

resource	yara_rule
behavioral2/memory/2892-131-0x0000000000400000-0x00000000004D5000-memory.dmp	family_vidar
behavioral2/memory/2892-132-0x000000000049EC7D-mapping.dmp	family_vidar
behavioral2/memory/2676-134-0x0000000002420000-0x00000000024F2000-memory.dmp	family_vidar
behavioral2/memory/2892-135-0x0000000000400000-0x00000000004D5000-memory.dmp	family_vidar

Downloads MZ/PE file

Executes dropped EXE 8 IoCs

pid	Process
2676	build2.exe
2892	build2.exe
3980	build3.exe
4056	build3.exe
3380	mstsca.exe
3904	mstsca.exe
648	mstsca.exe
1116	mstsca.exe

Loads dropped DLL 2 IoCs

pid	Process
2892	build2.exe
2892	build2.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1364	icacls.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
T1081
Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5dd88660-bad9-4112-a1aa-30e19dcdf533\\d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe\" --AutoStart"	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
13	api.2ip.ua
5	api.2ip.ua
6	api.2ip.ua

Suspicious use of SetThreadContext 6 IoCs

description	pid	Process	procid_target
PID 804 set thread context of 904	804	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	68
PID 1636 set thread context of 1968	1636	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	72
PID 2676 set thread context of 2892	2676	build2.exe	74
PID 3980 set thread context of 4056	3980	build3.exe	76
PID 3380 set thread context of 3904	3380	mstsca.exe	88
PID 648 set thread context of 1116	648	mstsca.exe	95

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	build2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	build2.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1820	schtasks.exe
3732	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2896	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4092	taskkill.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
904	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe
904	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe
1968	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe
1968	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe
2892	build2.exe
2892	build2.exe
2892	build2.exe
2892	build2.exe
2892	build2.exe
2892	build2.exe
2892	build2.exe
2892	build2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4092	taskkill.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 804 wrote to memory of 904	804	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	68
PID 804 wrote to memory of 904	804	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	68
PID 804 wrote to memory of 904	804	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	68
PID 804 wrote to memory of 904	804	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	68
PID 804 wrote to memory of 904	804	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	68
PID 804 wrote to memory of 904	804	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	68
PID 804 wrote to memory of 904	804	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	68
PID 804 wrote to memory of 904	804	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	68
PID 804 wrote to memory of 904	804	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	68
PID 804 wrote to memory of 904	804	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	68
PID 904 wrote to memory of 1364	904	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	69
PID 904 wrote to memory of 1364	904	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	69
PID 904 wrote to memory of 1364	904	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	69
PID 904 wrote to memory of 1636	904	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	70
PID 904 wrote to memory of 1636	904	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	70
PID 904 wrote to memory of 1636	904	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	70
PID 1636 wrote to memory of 1968	1636	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	72
PID 1636 wrote to memory of 1968	1636	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	72
PID 1636 wrote to memory of 1968	1636	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	72
PID 1636 wrote to memory of 1968	1636	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	72
PID 1636 wrote to memory of 1968	1636	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	72
PID 1636 wrote to memory of 1968	1636	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	72
PID 1636 wrote to memory of 1968	1636	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	72
PID 1636 wrote to memory of 1968	1636	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	72
PID 1636 wrote to memory of 1968	1636	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	72
PID 1636 wrote to memory of 1968	1636	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	72
PID 1968 wrote to memory of 2676	1968	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	73
PID 1968 wrote to memory of 2676	1968	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	73
PID 1968 wrote to memory of 2676	1968	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	73
PID 2676 wrote to memory of 2892	2676	build2.exe	74
PID 2676 wrote to memory of 2892	2676	build2.exe	74
PID 2676 wrote to memory of 2892	2676	build2.exe	74
PID 2676 wrote to memory of 2892	2676	build2.exe	74
PID 2676 wrote to memory of 2892	2676	build2.exe	74
PID 2676 wrote to memory of 2892	2676	build2.exe	74
PID 2676 wrote to memory of 2892	2676	build2.exe	74
PID 2676 wrote to memory of 2892	2676	build2.exe	74
PID 1968 wrote to memory of 3980	1968	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	75
PID 1968 wrote to memory of 3980	1968	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	75
PID 1968 wrote to memory of 3980	1968	d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe	75
PID 3980 wrote to memory of 4056	3980	build3.exe	76
PID 3980 wrote to memory of 4056	3980	build3.exe	76
PID 3980 wrote to memory of 4056	3980	build3.exe	76
PID 3980 wrote to memory of 4056	3980	build3.exe	76
PID 3980 wrote to memory of 4056	3980	build3.exe	76
PID 3980 wrote to memory of 4056	3980	build3.exe	76
PID 3980 wrote to memory of 4056	3980	build3.exe	76
PID 3980 wrote to memory of 4056	3980	build3.exe	76
PID 3980 wrote to memory of 4056	3980	build3.exe	76
PID 4056 wrote to memory of 1820	4056	build3.exe	77
PID 4056 wrote to memory of 1820	4056	build3.exe	77
PID 4056 wrote to memory of 1820	4056	build3.exe	77
PID 2892 wrote to memory of 748	2892	build2.exe	79
PID 2892 wrote to memory of 748	2892	build2.exe	79
PID 2892 wrote to memory of 748	2892	build2.exe	79
PID 748 wrote to memory of 4092	748	cmd.exe	81
PID 748 wrote to memory of 4092	748	cmd.exe	81
PID 748 wrote to memory of 4092	748	cmd.exe	81
PID 748 wrote to memory of 2896	748	cmd.exe	82
PID 748 wrote to memory of 2896	748	cmd.exe	82
PID 748 wrote to memory of 2896	748	cmd.exe	82
PID 3380 wrote to memory of 3904	3380	mstsca.exe	88
PID 3380 wrote to memory of 3904	3380	mstsca.exe	88
PID 3380 wrote to memory of 3904	3380	mstsca.exe	88

C:\Users\Admin\AppData\Local\Temp\d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe
"C:\Users\Admin\AppData\Local\Temp\d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:804
- C:\Users\Admin\AppData\Local\Temp\d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe
  "C:\Users\Admin\AppData\Local\Temp\d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe"
  2⤵
  - Adds Run key to start application
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:904
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\5dd88660-bad9-4112-a1aa-30e19dcdf533" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1364
- - C:\Users\Admin\AppData\Local\Temp\d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe
    "C:\Users\Admin\AppData\Local\Temp\d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1636
  - - C:\Users\Admin\AppData\Local\Temp\d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe
      "C:\Users\Admin\AppData\Local\Temp\d5b3a05a83dac1fde11c26bb358f513ddf0cb57853a141fecccda0446c842f81.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:1968
    - - C:\Users\Admin\AppData\Local\4ef84696-4bec-4ea2-99d7-050eb52e7052\build2.exe
        
        "C:\Users\Admin\AppData\Local\4ef84696-4bec-4ea2-99d7-050eb52e7052\build2.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:2676
      - C:\Users\Admin\AppData\Local\4ef84696-4bec-4ea2-99d7-050eb52e7052\build2.exe
        
        "C:\Users\Admin\AppData\Local\4ef84696-4bec-4ea2-99d7-050eb52e7052\build2.exe"
        6⤵
        Executes dropped EXE
        Loads dropped DLL
        Checks processor information in registry
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:2892
        
        C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\4ef84696-4bec-4ea2-99d7-050eb52e7052\build2.exe" & del C:\ProgramData\*.dll & exit
        7⤵
        Suspicious use of WriteProcessMemory
        
        PID:748
        
        C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im build2.exe /f
        8⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4092
        
        C:\Windows\SysWOW64\timeout.exe
        
        timeout /t 6
        8⤵
        Delays execution with timeout.exe
        
        PID:2896
    - - C:\Users\Admin\AppData\Local\4ef84696-4bec-4ea2-99d7-050eb52e7052\build3.exe
        
        "C:\Users\Admin\AppData\Local\4ef84696-4bec-4ea2-99d7-050eb52e7052\build3.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:3980
      - C:\Users\Admin\AppData\Local\4ef84696-4bec-4ea2-99d7-050eb52e7052\build3.exe
        
        "C:\Users\Admin\AppData\Local\4ef84696-4bec-4ea2-99d7-050eb52e7052\build3.exe"
        6⤵
        Executes dropped EXE
        Suspicious use of WriteProcessMemory
        
        PID:4056
        
        C:\Windows\SysWOW64\schtasks.exe
        
        /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
        7⤵
        Creates scheduled task(s)
        
        PID:1820

C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3380
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:3904
- - C:\Windows\SysWOW64\schtasks.exe
    /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
    3⤵
    - Creates scheduled task(s)
    PID:3732

C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
PID:648
- C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
  2⤵
  - Executes dropped EXE
  PID:1116

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

File and Directory Permissions Modification

T1222

Install Root Certificate

T1130

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/804-116-0x0000000002FC0000-0x00000000030DB000-memory.dmp

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memory/904-114-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/904-117-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1968-123-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2676-134-0x0000000002420000-0x00000000024F2000-memory.dmp

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memory/2892-135-0x0000000000400000-0x00000000004D5000-memory.dmp

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memory/2892-131-0x0000000000400000-0x00000000004D5000-memory.dmp

Download

memory/3980-145-0x0000000003330000-0x0000000003334000-memory.dmp

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memory/4056-146-0x0000000000400000-0x0000000000406000-memory.dmp

Download

memory/4056-141-0x0000000000400000-0x0000000000406000-memory.dmp

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