Overview
overview
10Static
static
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windows10_x64
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windows10_x64
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windows10_x64
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windows10_x64
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windows7_x64
10win102
windows10_x64
10win104
windows10_x64
10win105
windows10_x64
win106
windows10_x64
8win103
windows10_x64
win101
windows10_x64
10win100
windows10_x64
10Resubmissions
24-04-2021 20:28
210424-hdvwe2nvza 1024-04-2021 19:13
210424-ybjq8yj7ej 1024-04-2021 19:13
210424-lbec8bsxas 1024-04-2021 19:13
210424-p1q7nfdl5n 1024-04-2021 19:13
210424-zsvmftzny6 1024-04-2021 15:54
210424-bvebvx5d4j 1024-04-2021 08:51
210424-fycslxztl2 1024-04-2021 06:48
210424-dpw71r8bwa 10General
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Target
keygen-step-4.exe
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Size
4.6MB
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Sample
210424-ybjq8yj7ej
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MD5
563107b1df2a00f4ec868acd9e08a205
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SHA1
9cb9c91d66292f5317aa50d92e38834861e9c9b7
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SHA256
bf2bd257dde4921ce83c7c1303fafe7f9f81e53c2775d3c373ced482b22eb8a9
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SHA512
99a8d247fa435c4cd95be7bc64c7dd6e382371f3a3c160aac3995fd705e4fd3f6622c23784a4ae3457c87536347d15eda3f08aa616450778a99376df540d74d1
Static task
static1
Behavioral task
behavioral1
Sample
keygen-step-4.exe
Resource
win10v20210410
Behavioral task
behavioral2
Sample
keygen-step-4.exe
Resource
win10v20210408
Behavioral task
behavioral3
Sample
keygen-step-4.exe
Resource
win10v20210410
Behavioral task
behavioral4
Sample
keygen-step-4.exe
Resource
win10v20210408
Behavioral task
behavioral5
Sample
keygen-step-4.exe
Resource
win7v20210410
Behavioral task
behavioral6
Sample
keygen-step-4.exe
Resource
win10v20210408
Behavioral task
behavioral7
Sample
keygen-step-4.exe
Resource
win10v20210410
Behavioral task
behavioral8
Sample
keygen-step-4.exe
Resource
win10v20210410
Behavioral task
behavioral9
Sample
keygen-step-4.exe
Resource
win10v20210410
Behavioral task
behavioral10
Sample
keygen-step-4.exe
Resource
win10v20210408
Behavioral task
behavioral11
Sample
keygen-step-4.exe
Resource
win10v20210410
Behavioral task
behavioral12
Sample
keygen-step-4.exe
Resource
win10v20210408
Malware Config
Extracted
fickerstealer
sodaandcoke.top:80
Extracted
C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT
buran
Extracted
C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT
buran
Extracted
C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT
buran
Extracted
C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT
buran
Extracted
C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT
buran
Targets
-
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Target
keygen-step-4.exe
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Size
4.6MB
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MD5
563107b1df2a00f4ec868acd9e08a205
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SHA1
9cb9c91d66292f5317aa50d92e38834861e9c9b7
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SHA256
bf2bd257dde4921ce83c7c1303fafe7f9f81e53c2775d3c373ced482b22eb8a9
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SHA512
99a8d247fa435c4cd95be7bc64c7dd6e382371f3a3c160aac3995fd705e4fd3f6622c23784a4ae3457c87536347d15eda3f08aa616450778a99376df540d74d1
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Buran
Ransomware-as-a-service based on the VegaLocker family first identified in 2019.
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Checks for common network interception software
Looks in the registry for tools like Wireshark or Fiddler commonly used to analyze network activity.
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XMRig Miner Payload
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Blocklisted process makes network request
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Creates new service(s)
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Downloads MZ/PE file
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Drops file in Drivers directory
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Executes dropped EXE
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Modifies Windows Firewall
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Modifies extensions of user files
Ransomware generally changes the extension on encrypted files.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Loads dropped DLL
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Modifies file permissions
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Accesses cryptocurrency files/wallets, possible credential harvesting
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Adds Run key to start application
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Checks for any installed AV software in registry
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Legitimate hosting services abused for malware hosting/C2
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Drops file in System32 directory
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v6
Persistence
BITS Jobs
1Modify Existing Service
1New Service
1Registry Run Keys / Startup Folder
1Defense Evasion
BITS Jobs
1File Deletion
2File and Directory Permissions Modification
1Install Root Certificate
1Modify Registry
3Web Service
1