Analysis
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max time kernel
121s -
max time network
143s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
24-01-2022 00:34
Static task
static1
Behavioral task
behavioral1
Sample
84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe
Resource
win10-en-20211208
General
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Target
84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe
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Size
67KB
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MD5
1019e0151d6c55eeecf06443fa6197c7
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SHA1
369445caaca7ba44bc684f9d9fd7651467ed5167
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SHA256
84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f
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SHA512
7328cac56bce5a181bdaca079cd16c04dedb0f0201a40b0fcb6b0d7483440f99dc480b5d08bb295bc4c257bb16d88160e709ce8b76e2d2514080d05a82c7f6c8
Malware Config
Extracted
C:\uR7ZOTnZH.README.txt
blackmatter
http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/7NT6LXKC1XQHW5039BLOV
Signatures
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BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
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suricata: ET MALWARE BlackMatter CnC Activity
suricata: ET MALWARE BlackMatter CnC Activity
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suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (mojobiden .com)
suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (mojobiden .com)
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suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (paymenthacks .com)
suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (paymenthacks .com)
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Modifies extensions of user files 5 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\ResetSkip.crw => C:\Users\Admin\Pictures\ResetSkip.crw.uR7ZOTnZH 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe File opened for modification C:\Users\Admin\Pictures\ResetSkip.crw.uR7ZOTnZH 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe File opened for modification C:\Users\Admin\Pictures\RemoveDeny.tiff 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe File renamed C:\Users\Admin\Pictures\RemoveDeny.tiff => C:\Users\Admin\Pictures\RemoveDeny.tiff.uR7ZOTnZH 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe File opened for modification C:\Users\Admin\Pictures\RemoveDeny.tiff.uR7ZOTnZH 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\uR7ZOTnZH.bmp" 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Set value (str) \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\uR7ZOTnZH.bmp" 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
pid Process 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe -
Modifies Control Panel 3 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Control Panel\International 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Key created \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Control Panel\Desktop 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Set value (str) \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Control Panel\Desktop\WallpaperStyle = "10" 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
description pid Process Token: SeBackupPrivilege 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: SeDebugPrivilege 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: 36 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: SeImpersonatePrivilege 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: SeIncBasePriorityPrivilege 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: SeIncreaseQuotaPrivilege 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: 33 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: SeManageVolumePrivilege 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: SeProfSingleProcessPrivilege 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: SeRestorePrivilege 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: SeSecurityPrivilege 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: SeSystemProfilePrivilege 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: SeTakeOwnershipPrivilege 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: SeShutdownPrivilege 3484 84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe Token: SeBackupPrivilege 1100 vssvc.exe Token: SeRestorePrivilege 1100 vssvc.exe Token: SeAuditPrivilege 1100 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe"C:\Users\Admin\AppData\Local\Temp\84af3f15701d259f3729d83beb15ca738028432c261353d1f9242469d791714f.exe"1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3484
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1100