Analysis
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max time kernel
91s -
max time network
96s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
18/09/2023, 08:29
Behavioral task
behavioral1
Sample
04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe
Resource
win10v2004-20230915-en
General
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Target
04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe
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Size
39KB
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MD5
b1228ba24ca5f75f8df9d5d177e5bb2b
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SHA1
1895758de51ccfefa40239aa11055540c8c5deb7
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SHA256
04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08
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SHA512
7abc1df0089a1a00aadc11c33eecffb5d85258acc4eac0b261ceaea77e814eaf671506383fe0074fd5779b8bc58e0f48f0d15309aa81aecf27ecc6633da4c5a4
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SSDEEP
768:hqo2khp1DlNjwQr9KWO4TOpkx7u/LraCvpbMC2mkek:ko2kFpNjwQr9KWODkx74L2CNf5k
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 4 IoCs
resource yara_rule behavioral1/memory/1948-0-0x0000000000B70000-0x0000000000B80000-memory.dmp family_chaos behavioral1/files/0x00080000000231c2-6.dat family_chaos behavioral1/files/0x00080000000231c2-11.dat family_chaos behavioral1/files/0x00080000000231c2-12.dat family_chaos -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 2456 bcdedit.exe 4448 bcdedit.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-1-5-21-2344688013-2965468717-2034126-1000\Control Panel\International\Geo\Nation 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe Key value queried \REGISTRY\USER\S-1-5-21-2344688013-2965468717-2034126-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IMPORTANT.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 4476 svchost.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops desktop.ini file(s) 34 IoCs
description ioc Process File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2344688013-2965468717-2034126-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2344688013-2965468717-2034126-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\zm4xo5to9.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2344688013-2965468717-2034126-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1924 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4476 svchost.exe -
Suspicious behavior: EnumeratesProcesses 47 IoCs
pid Process 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe 4476 svchost.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe Token: SeDebugPrivilege 4476 svchost.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1924 NOTEPAD.EXE -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 1948 wrote to memory of 4476 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 85 PID 1948 wrote to memory of 4476 1948 04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe 85 PID 4476 wrote to memory of 2596 4476 svchost.exe 90 PID 4476 wrote to memory of 2596 4476 svchost.exe 90 PID 2596 wrote to memory of 2456 2596 cmd.exe 92 PID 2596 wrote to memory of 2456 2596 cmd.exe 92 PID 2596 wrote to memory of 4448 2596 cmd.exe 93 PID 2596 wrote to memory of 4448 2596 cmd.exe 93 PID 4476 wrote to memory of 1924 4476 svchost.exe 94 PID 4476 wrote to memory of 1924 4476 svchost.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe"C:\Users\Admin\AppData\Local\Temp\04b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1948 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4476 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no3⤵
- Suspicious use of WriteProcessMemory
PID:2596 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2456
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:4448
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\IMPORTANT.txt3⤵
- Opens file in notepad (likely ransom note)
- Suspicious use of FindShellTrayWindow
PID:1924
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
763B
MD546fe77013e7336b17e5270cc708a1da4
SHA1c8949dbcaac904160eacafcbde51b52c0e5110f1
SHA256fff91118e1d44de84c1876cfcb6ee5413c336dca888efb2d9af084047fe06cf6
SHA512b4e5bc4e20005c869e914ab9314944215dced635991772896d07731bf1711708ce74f5660bab8669de965eeac00ce7b56cfb5fd650437dfe3336c90eb3790d52
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Filesize
39KB
MD5b1228ba24ca5f75f8df9d5d177e5bb2b
SHA11895758de51ccfefa40239aa11055540c8c5deb7
SHA25604b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08
SHA5127abc1df0089a1a00aadc11c33eecffb5d85258acc4eac0b261ceaea77e814eaf671506383fe0074fd5779b8bc58e0f48f0d15309aa81aecf27ecc6633da4c5a4
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Filesize
39KB
MD5b1228ba24ca5f75f8df9d5d177e5bb2b
SHA11895758de51ccfefa40239aa11055540c8c5deb7
SHA25604b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08
SHA5127abc1df0089a1a00aadc11c33eecffb5d85258acc4eac0b261ceaea77e814eaf671506383fe0074fd5779b8bc58e0f48f0d15309aa81aecf27ecc6633da4c5a4
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Filesize
39KB
MD5b1228ba24ca5f75f8df9d5d177e5bb2b
SHA11895758de51ccfefa40239aa11055540c8c5deb7
SHA25604b106b179c202c67361aa4debad5d82f79a1927ab0ab8abc2ef350d18894b08
SHA5127abc1df0089a1a00aadc11c33eecffb5d85258acc4eac0b261ceaea77e814eaf671506383fe0074fd5779b8bc58e0f48f0d15309aa81aecf27ecc6633da4c5a4
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Filesize
763B
MD546fe77013e7336b17e5270cc708a1da4
SHA1c8949dbcaac904160eacafcbde51b52c0e5110f1
SHA256fff91118e1d44de84c1876cfcb6ee5413c336dca888efb2d9af084047fe06cf6
SHA512b4e5bc4e20005c869e914ab9314944215dced635991772896d07731bf1711708ce74f5660bab8669de965eeac00ce7b56cfb5fd650437dfe3336c90eb3790d52