General
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Target
keygen-step-4.exe
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Size
6.3MB
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Sample
210306-btpn6kk5xa
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MD5
5f6a71ec27ed36a11d17e0989ffb0382
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SHA1
a66b0e4d8ba90fc97e4d5eb37d7fbc12ade9a556
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SHA256
a546a1f257585e2f4c093db2b7eeb6413a314ffb1296d97fd31d0363e827cc65
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SHA512
d67e0f1627e5416aef1185aea2125c8502aac02b6d3e8eec301e344f5074bfce8b2aded37b2730a65c04b95b1ba6151e79048642ef1d0c9b32702f919b42f7b4
Static task
static1
Behavioral task
behavioral1
Sample
keygen-step-4.exe
Resource
win7v20201028
Malware Config
Targets
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Target
keygen-step-4.exe
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Size
6.3MB
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MD5
5f6a71ec27ed36a11d17e0989ffb0382
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SHA1
a66b0e4d8ba90fc97e4d5eb37d7fbc12ade9a556
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SHA256
a546a1f257585e2f4c093db2b7eeb6413a314ffb1296d97fd31d0363e827cc65
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SHA512
d67e0f1627e5416aef1185aea2125c8502aac02b6d3e8eec301e344f5074bfce8b2aded37b2730a65c04b95b1ba6151e79048642ef1d0c9b32702f919b42f7b4
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ElysiumStealer
ElysiumStealer (previously known as ZeromaxStealer) is an info stealer that can steal login credentials for various accounts.
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ElysiumStealer Payload
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ElysiumStealer Support DLL
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RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
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RedLine Payload
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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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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Nirsoft
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XMRig Miner Payload
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Executes dropped EXE
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Drops startup file
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Loads dropped DLL
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Reads user/profile data of web browsers
Infostealers often target stored browser data, which can include saved credentials etc.
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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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Maps connected drives based on registry
Disk information is often read in order to detect sandboxing environments.
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v6
Defense Evasion
Install Root Certificate
1Modify Registry
2Virtualization/Sandbox Evasion
1Web Service
1