Overview
overview
10Static
static
1Language/WinRar.exe
windows7-x64
10Language/WinRar.exe
windows10-2004-x64
10Setup.exe
windows7-x64
1Setup.exe
windows10-2004-x64
10en-US/Auto...eN.dll
windows7-x64
1en-US/Auto...eN.dll
windows10-2004-x64
1en-US/avicap32.dll
windows7-x64
1en-US/avicap32.dll
windows10-2004-x64
1vcomp140.dll
windows7-x64
1vcomp140.dll
windows10-2004-x64
3vcruntime140.dll
windows7-x64
3vcruntime140.dll
windows10-2004-x64
3win-api.xml
windows7-x64
1win-api.xml
windows10-2004-x64
1Analysis
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max time kernel
139s -
max time network
164s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
submitted
21/02/2023, 11:28
Static task
static1
Behavioral task
behavioral1
Sample
Language/WinRar.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
Language/WinRar.exe
Resource
win10v2004-20230220-en
Behavioral task
behavioral3
Sample
Setup.exe
Resource
win7-20230220-en
Behavioral task
behavioral4
Sample
Setup.exe
Resource
win10v2004-20230220-en
Behavioral task
behavioral5
Sample
en-US/AutoWorkplaceN.dll
Resource
win7-20230220-en
Behavioral task
behavioral6
Sample
en-US/AutoWorkplaceN.dll
Resource
win10v2004-20230220-en
Behavioral task
behavioral7
Sample
en-US/avicap32.dll
Resource
win7-20230220-en
Behavioral task
behavioral8
Sample
en-US/avicap32.dll
Resource
win10v2004-20230220-en
Behavioral task
behavioral9
Sample
vcomp140.dll
Resource
win7-20230220-en
Behavioral task
behavioral10
Sample
vcomp140.dll
Resource
win10v2004-20230220-en
Behavioral task
behavioral11
Sample
vcruntime140.dll
Resource
win7-20230220-en
Behavioral task
behavioral12
Sample
vcruntime140.dll
Resource
win10v2004-20230220-en
Behavioral task
behavioral13
Sample
win-api.xml
Resource
win7-20230220-en
Behavioral task
behavioral14
Sample
win-api.xml
Resource
win10v2004-20230220-en
General
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Target
Language/WinRar.exe
Malware Config
Signatures
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Modifies system executable filetype association 2 TTPs 8 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shellex\PropertySheetHandlers\{B41DB860-8EE4-11D2-9906-E49FADC173CA} uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shellex\PropertySheetHandlers\{B41DB860-8EE4-11D2-9906-E49FADC173CA}\ uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\WinRAR32 uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\WinRAR32\ = "{B41DB860-8EE4-11D2-9906-E49FADC173CA}" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shellex\PropertySheetHandlers\{B41DB860-64E4-11D2-9906-E49FADC173CA} uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shellex\PropertySheetHandlers\{B41DB860-64E4-11D2-9906-E49FADC173CA}\ uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\WinRAR uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\WinRAR\ = "{B41DB860-64E4-11D2-9906-E49FADC173CA}" uninstall.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation WinRar.exe -
Executes dropped EXE 1 IoCs
pid Process 4484 uninstall.exe -
Registers COM server for autorun 1 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{B41DB860-64E4-11D2-9906-E49FADC173CA}\InProcServer32 uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{B41DB860-64E4-11D2-9906-E49FADC173CA}\InProcServer32\ = "C:\\Program Files\\WinRAR\\rarext.dll" uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{B41DB860-64E4-11D2-9906-E49FADC173CA}\InProcServer32\ThreadingModel = "Apartment" uninstall.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\WinRAR\License.txt WinRar.exe File created C:\Program Files\WinRAR\Uninstall.lst WinRar.exe File created C:\Program Files\WinRAR\WinRAR.exe WinRar.exe File created C:\Program Files\WinRAR\Zip64.SFX WinRar.exe File created C:\Program Files\WinRAR\RarExt32.dll WinRar.exe File created C:\Program Files\WinRAR\Rar.txt WinRar.exe File opened for modification C:\Program Files\WinRAR\Uninstall.exe WinRar.exe File opened for modification C:\Program Files\WinRAR\RarExt32.dll WinRar.exe File created C:\Program Files\WinRAR\Default.SFX WinRar.exe File created C:\Program Files\WinRAR\WinCon.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR\Zip.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR\Uninstall.lst WinRar.exe File opened for modification C:\Program Files\WinRAR\WinConEn64.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR\ZipEn.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR\Descript.ion WinRar.exe File opened for modification C:\Program Files\WinRAR\ReadMe.rus.txt WinRar.exe File created C:\Program Files\WinRAR\RarFiles.lst WinRar.exe File created C:\Program Files\WinRAR\Zip.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR\RarFiles.lst WinRar.exe File created C:\Program Files\WinRAR\UnRAR.exe WinRar.exe File created C:\Program Files\WinRAR\rarlng.dll WinRar.exe File opened for modification C:\Program Files\WinRAR\DefaultEn.SFX WinRar.exe File created C:\Program Files\WinRAR\DefaultEn64.SFX WinRar.exe File created C:\Program Files\WinRAR\ReadMe.txt WinRar.exe File opened for modification C:\Program Files\WinRAR\rarlng.dll WinRar.exe File created C:\Program Files\WinRAR\DefaultEn.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR\Zip64.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR WinRar.exe File opened for modification C:\Program Files\WinRAR\License.txt WinRar.exe File opened for modification C:\Program Files\WinRAR\RarExt.dll WinRar.exe File opened for modification C:\Program Files\WinRAR\Default64.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR\DefaultEn64.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR\ZipEn64.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR\Rar.txt WinRar.exe File created C:\Program Files\WinRAR\Order.htm WinRar.exe File opened for modification C:\Program Files\WinRAR\Rar.exe WinRar.exe File created C:\Program Files\WinRAR\7zxa.dll WinRar.exe File opened for modification C:\Program Files\WinRAR\WinCon64.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR\WhatsNew.txt WinRar.exe File opened for modification C:\Program Files\WinRAR\Order.htm WinRar.exe File created C:\Program Files\WinRAR\Uninstall.exe WinRar.exe File created C:\Program Files\WinRAR\__tmp_rar_sfx_access_check_240605750 WinRar.exe File created C:\Program Files\WinRAR\Descript.ion WinRar.exe File opened for modification C:\Program Files\WinRAR\WinCon.SFX WinRar.exe File created C:\Program Files\WinRAR\WinConEn64.SFX WinRar.exe File created C:\Program Files\WinRAR\WinRAR.chm WinRar.exe File created C:\Program Files\WinRAR\RarExt.dll WinRar.exe File opened for modification C:\Program Files\WinRAR\ReadMe.txt WinRar.exe File created C:\Program Files\WinRAR\Rar.exe WinRar.exe File created C:\Program Files\WinRAR\Default64.SFX WinRar.exe File created C:\Program Files\WinRAR\WinCon64.SFX WinRar.exe File created C:\Program Files\WinRAR\ZipEn64.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR\UnRAR.exe WinRar.exe File opened for modification C:\Program Files\WinRAR\7zxa.dll WinRar.exe File opened for modification C:\Program Files\WinRAR\Default.SFX WinRar.exe File created C:\Program Files\WinRAR\WinConEn.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR\WinConEn.SFX WinRar.exe File created C:\Program Files\WinRAR\zipnew.dat uninstall.exe File opened for modification C:\Program Files\WinRAR\WinRAR.exe WinRar.exe File created C:\Program Files\WinRAR\ReadMe.rus.txt WinRar.exe File created C:\Program Files\WinRAR\WhatsNew.txt WinRar.exe File created C:\Program Files\WinRAR\ZipEn.SFX WinRar.exe File opened for modification C:\Program Files\WinRAR\WinRAR.chm WinRar.exe File created C:\Program Files\WinRAR\rarnew.dat uninstall.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 64 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.r02\ = "WinRAR" uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.r17\ = "WinRAR" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.xz uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR.REV\shell\open\command\ = "\"C:\\Program Files\\WinRAR\\WinRAR.exe\" \"%1\"" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR\shellex\PropertySheetHandlers\{B41DB860-8EE4-11D2-9906-E49FADC173CA} uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR.ZIP\shellex\PropertySheetHandlers\{B41DB860-64E4-11D2-9906-E49FADC173CA}\ uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.r06 uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.r08\ = "WinRAR" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.r24 uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.zip\ = "WinRAR.ZIP" uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.zip\ShellNew\FileName = "C:\\Program Files\\WinRAR\\zipnew.dat" uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.7z\ = "WinRAR" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shellex\DragDropHandlers\WinRAR32 uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.rar uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.001 uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR.REV\shell uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shellex\PropertySheetHandlers\{B41DB860-64E4-11D2-9906-E49FADC173CA} uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.arj\ = "WinRAR" uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B41DB860-8EE4-11D2-9906-E49FADC173CA}\ = "WinRAR" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.r00 uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.r20\ = "WinRAR" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.gz uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR\shell uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{B41DB860-64E4-11D2-9906-E49FADC173CA}\InProcServer32 uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shellex\DragDropHandlers\WinRAR uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR.ZIP\shellex\DropHandler\ = "{B41DB860-8EE4-11D2-9906-E49FADC173CA}" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.tgz uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.tgz\ = "WinRAR" uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B41DB860-8EE4-11D2-9906-E49FADC173CA}\InProcServer32\ThreadingModel = "Apartment" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR\shellex\ContextMenuHandlers uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.gz\ = "WinRAR" uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.taz\ = "WinRAR" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\WinRAR32 uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.r07 uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.r25 uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.lzh\ = "WinRAR" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.r02 uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.r03\ = "WinRAR" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.r10 uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.r12\ = "WinRAR" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR\shell\open\command uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B41DB860-8EE4-11D2-9906-E49FADC173CA} uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR\shellex\DropHandler uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.r06\ = "WinRAR" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.r09 uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.r11 uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.r20 uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.tar uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.zipx uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\WinRAR32\ = "{B41DB860-8EE4-11D2-9906-E49FADC173CA}" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Folder\shellex\ContextMenuHandlers\WinRAR uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR\DefaultIcon uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{B41DB860-64E4-11D2-9906-E49FADC173CA}\InProcServer32\ThreadingModel = "Apartment" uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.r19\ = "WinRAR" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.r21 uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.cab\ = "WinRAR" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.lz uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.bz2\ = "WinRAR" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR.ZIP\shellex uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR.ZIP\shellex\DropHandler uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR.ZIP\DefaultIcon\ = "C:\\Program Files\\WinRAR\\WinRAR.exe,0" uninstall.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR.REV\DefaultIcon uninstall.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WinRAR.ZIP\shellex\ContextMenuHandlers\{B41DB860-8EE4-11D2-9906-E49FADC173CA}\ uninstall.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 3680 WinRar.exe 3680 WinRar.exe 4484 uninstall.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3680 wrote to memory of 4484 3680 WinRar.exe 80 PID 3680 wrote to memory of 4484 3680 WinRar.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\Language\WinRar.exe"C:\Users\Admin\AppData\Local\Temp\Language\WinRar.exe"1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3680 -
C:\Program Files\WinRAR\uninstall.exe"C:\Program Files\WinRAR\uninstall.exe" /setup2⤵
- Modifies system executable filetype association
- Executes dropped EXE
- Registers COM server for autorun
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4484
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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:3008
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
118KB
MD55684ea7cee254c5d8cab7a9d74974be1
SHA1fb375d94eced40b1c26f6cfe5298c526bc80cff4
SHA2568fe2e2987889f5f1c4ccc3ba6bf069ae35e5abf3c6a50d14e0e8b50dcff5108a
SHA5120ec8b03ff6dcf53bf23ae439939385427064247537f11c11818f0710ccc15f6a248bf97c3c2e893645cf00652b08d1e1d54814482fe21dd127c1c5cf44ddc293
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Filesize
383KB
MD594239a4bd897e66cdfc298fe5ce6e160
SHA13d91edacfe7307506df2368909fe5e6d01ef18b4
SHA256c382b2af0e85b090333df7b7395d0022b9c5a4c026cf7761052128ed3ada5e0f
SHA5129c6c9fcff255aad7363040ee82df390cef43a6a03c0f0eb13ba5f3bfb0ce8d811d296d25ee13242adb51a17f0326d3c6b385495bd04bf9116f0e1a3633a0c7d4
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Filesize
383KB
MD594239a4bd897e66cdfc298fe5ce6e160
SHA13d91edacfe7307506df2368909fe5e6d01ef18b4
SHA256c382b2af0e85b090333df7b7395d0022b9c5a4c026cf7761052128ed3ada5e0f
SHA5129c6c9fcff255aad7363040ee82df390cef43a6a03c0f0eb13ba5f3bfb0ce8d811d296d25ee13242adb51a17f0326d3c6b385495bd04bf9116f0e1a3633a0c7d4
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Filesize
129KB
MD5974e21550629d23011b110fd10b2950f
SHA164bc579196cbed3b8670e5c357b8b4a6c482ce17
SHA256d573f277b0f1c92e96f5df7b1864dd1167b4ed4d32229822b6ff2b07ba78f062
SHA5122e88716846290172d02b22c2b2ea67d9f67b785d0ce88f4eb63233312250b24d455b785d7b494760120ee52903682769f30b90520153d95026b15cceb35c9a10
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Filesize
378KB
MD502b9b0d56402e39eb2f7cb1923b7eca3
SHA13b4ac6d8424c437da86ae78258f950e64b65d8a6
SHA256f8cb67292cc4bde1cedd9cb5cd27e6dec21fd6a23e1c32a02f047ff55eff3823
SHA5127f3b6a96b13022d7d6d4c629e0cef4f3e6686f00877ff0b10a75ccd980c5fae2c76de79221215c9b930faeaf302d30f87fa684e501bbdafe70bbcd3b221264e1
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Filesize
2.2MB
MD51e3a2a966f593ad33125f26916267008
SHA138b1a547ddee671edeee7385cac138458a6a6858
SHA256b18c9b9200e354f81882b29dc8143ec5d6f2b731cf4c7da3800e339ffb3c8827
SHA512928540f5d087fd2099b642f8e5b23c9f4b3924e57be95552f4f719d29644d8fbbd75d30a3d359aca895434617f087ca251657cb2871d5fc1bf840f961375301b
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Filesize
955KB
MD51380c57e28c63098c683cb15d8af1523
SHA19b66bf5741aa6485097f7a82b45e5eefbac717cd
SHA2568c2a093eb8f7907ea928accbbbeb1531925b8f76adbd176364e4dcaff32d0ab2
SHA512299143e7ad7266136f77362156c2990269660986a2ec67be0addef288803bedf85a6e47b4342381042395775becc0f4d2dfdb75e7dc8670e9272f2ac92d039cc
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Filesize
383KB
MD594239a4bd897e66cdfc298fe5ce6e160
SHA13d91edacfe7307506df2368909fe5e6d01ef18b4
SHA256c382b2af0e85b090333df7b7395d0022b9c5a4c026cf7761052128ed3ada5e0f
SHA5129c6c9fcff255aad7363040ee82df390cef43a6a03c0f0eb13ba5f3bfb0ce8d811d296d25ee13242adb51a17f0326d3c6b385495bd04bf9116f0e1a3633a0c7d4