General
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Target
B376E4858ECE14F0459FC8F24E72BED8.exe
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Size
4.3MB
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Sample
210820-gthh9syvmn
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MD5
b376e4858ece14f0459fc8f24e72bed8
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SHA1
c9e9321fc4d550ef75ca83deb1cdbd2d235c9fd9
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SHA256
0a823cbd6a32a10c927253fa40466c8a3177e487ee7895a8a2e244a9b4c415fc
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SHA512
0c9ae6c6aec36cc6e323a8d8ff9c3297bc60d8c29428d2d2f9674b7f7734ecb7211754fb5445d3280156b8252d7e51da3281dde8e367d9c735208229a29b795c
Static task
static1
Behavioral task
behavioral1
Sample
B376E4858ECE14F0459FC8F24E72BED8.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
B376E4858ECE14F0459FC8F24E72BED8.exe
Resource
win10v20210408
Malware Config
Extracted
vidar
40
706
https://lenak513.tumblr.com/
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profile_id
706
Extracted
redline
pab3
185.215.113.15:61506
Extracted
smokeloader
2020
http://aucmoney.com/upload/
http://thegymmum.com/upload/
http://atvcampingtrips.com/upload/
http://kuapakualaman.com/upload/
http://renatazarazua.com/upload/
http://nasufmutlu.com/upload/
Extracted
redline
Second_7.5K
45.14.49.200:27625
Extracted
vidar
40.1
983
https://eduarroma.tumblr.com/
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profile_id
983
Targets
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Target
B376E4858ECE14F0459FC8F24E72BED8.exe
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Size
4.3MB
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MD5
b376e4858ece14f0459fc8f24e72bed8
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SHA1
c9e9321fc4d550ef75ca83deb1cdbd2d235c9fd9
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SHA256
0a823cbd6a32a10c927253fa40466c8a3177e487ee7895a8a2e244a9b4c415fc
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SHA512
0c9ae6c6aec36cc6e323a8d8ff9c3297bc60d8c29428d2d2f9674b7f7734ecb7211754fb5445d3280156b8252d7e51da3281dde8e367d9c735208229a29b795c
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Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
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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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suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
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suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
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suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
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suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Vidar Stealer
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Downloads MZ/PE file
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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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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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Adds Run key to start application
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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 NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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MITRE ATT&CK Matrix ATT&CK v6
Persistence
Modify Existing Service
1Registry Run Keys / Startup Folder
1Scheduled Task
1Defense Evasion
Modify Registry
2Disabling Security Tools
1Virtualization/Sandbox Evasion
1