Analysis
- max time kernel
148s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
08/04/2024, 18:06
General
- Target exe/unimed4.exe
- Size 157KB
- Sample240408-wp9jksff47
- SHA256 76e4b75279179170fd81e05b51fbaf33aa8becaabc9bc9565950b4363a4a6ed2
Malware Config
Extracted
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C:\Users\8iysYFBai.README.txt
- ~~ LockBit 3.0 the world's fastest and most stable ransomware from 2019~~~ >>>>> Your data is stolen and encrypted. BLOG Tor Browser Links: http://lockbit3753ekiocyo5epmpy6klmejchjtzddoekjlnt6mu3qh4de2id.onion/ http://lockbit3g3ohd3katajf6zaehxz4h4cnhmz5t735zpltywhwpc6oy3id.onion/ http://lockbit3olp7oetlc4tl5zydnoluphh7fvdt5oa6arcp2757r7xkutid.onion/ http://lockbit435xk3ki62yun7z5nhwz6jyjdp2c64j5vge536if2eny3gtid.onion/ http://lockbit4lahhluquhoka3t4spqym2m3dhe66d6lr337glmnlgg2nndad.onion/ http://lockbit6knrauo3qafoksvl742vieqbujxw7rd6ofzdtapjb4rrawqad.onion/ http://lockbit7ouvrsdgtojeoj5hvu6bljqtghitekwpdy3b6y62ixtsu5jqd.onion/ >>>>> What guarantee is there that we won't cheat you? We are the oldest ransomware affiliate program on the planet, nothing is more important than our reputation. We are not a politically motivated group and we want nothing more than money. If you pay, we will fulfill all the terms we agree on during the negotiation process. Treat this situation simply as a paid training session for your system administrators, because it was the misconfiguration of your corporate network that allowed us to attack you. Our pentesting services should be paid for the same way you pay your system administrators salaries. You can get more information about us on Ilon Musk's Twitter https://twitter.com/hashtag/lockbit?f=live >>>>> You need to contact us on TOR darknet sites with your personal ID Download and install Tor Browser https://www.torproject.org/ Write to the chat room and wait for an answer, we'll guarantee a response from us. If you need a unique ID for correspondence with us that no one will know about, ask it in the chat, we will generate a secret chat for you and give you his ID via private one-time memos service, no one can find out this ID but you. Sometimes you will have to wait some time for our reply, this is because we have a lot of work and we attack hundreds of companies around the world. Tor Browser personal link for CHAT available only to you (available during a ddos attack): http://lockbitcuo23q7qrymbk6dsp2sadltspjvjxgcyp4elbnbr6tcnwq7qd.onion Tor Browser Links for CHAT (sometimes unavailable due to ddos attacks): http://lockbit5eevg7vec4vwwtzgkl4kulap6oxbic2ye4mnmlq6njnpc47qd.onion http://lockbit74beza5z3e3so7qmjnvlgoemscp7wtp33xo7xv7f7xtlqbkqd.onion http://lockbit75naln4yj44rg6ez6vjmdcrt7up4kxmmmuvilcg4ak3zihxid.onion http://lockbit7a2g6ve7etbcy6iyizjnuleffz4szgmxaawcbfauluavi5jqd.onion http://lockbitaa46gwjck2xzmi2xops6x4x3aqn6ez7yntitero2k7ae6yoyd.onion http://lockbitb42tkml3ipianjbs6e33vhcshb7oxm2stubfvdzn3y2yqgbad.onion http://lockbitcuo23q7qrymbk6dsp2sadltspjvjxgcyp4elbnbr6tcnwq7qd.onion >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >> Your personal Black ID: CBCA8AEF72D14369A8F8074D99A23E80 << >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>> Warning! Do not delete or modify encrypted files, it will lead to problems with decryption of files! >>>>> Don't go to the police or the FBI for help and don't tell anyone that we attacked you.
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http://lockbit3753ekiocyo5epmpy6klmejchjtzddoekjlnt6mu3qh4de2id.onion/
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http://lockbit3g3ohd3katajf6zaehxz4h4cnhmz5t735zpltywhwpc6oy3id.onion/
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http://lockbit3olp7oetlc4tl5zydnoluphh7fvdt5oa6arcp2757r7xkutid.onion/
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http://lockbit435xk3ki62yun7z5nhwz6jyjdp2c64j5vge536if2eny3gtid.onion/
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http://lockbit4lahhluquhoka3t4spqym2m3dhe66d6lr337glmnlgg2nndad.onion/
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http://lockbit6knrauo3qafoksvl742vieqbujxw7rd6ofzdtapjb4rrawqad.onion/
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http://lockbit7ouvrsdgtojeoj5hvu6bljqtghitekwpdy3b6y62ixtsu5jqd.onion/
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https://twitter.com/hashtag/lockbit?f=live
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http://lockbitcuo23q7qrymbk6dsp2sadltspjvjxgcyp4elbnbr6tcnwq7qd.onion
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http://lockbit5eevg7vec4vwwtzgkl4kulap6oxbic2ye4mnmlq6njnpc47qd.onion
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http://lockbit74beza5z3e3so7qmjnvlgoemscp7wtp33xo7xv7f7xtlqbkqd.onion
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http://lockbit75naln4yj44rg6ez6vjmdcrt7up4kxmmmuvilcg4ak3zihxid.onion
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http://lockbit7a2g6ve7etbcy6iyizjnuleffz4szgmxaawcbfauluavi5jqd.onion
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http://lockbitaa46gwjck2xzmi2xops6x4x3aqn6ez7yntitero2k7ae6yoyd.onion
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http://lockbitb42tkml3ipianjbs6e33vhcshb7oxm2stubfvdzn3y2yqgbad.onion
Signatures
- Renames multiple (179) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Deletes itself 1 IoCs
- Executes dropped EXE 1 IoCs
- Drops desktop.ini file(s) 2 IoCs
- Sets desktop wallpaper using registry 2 TTPs 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 12 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Modifies Control Panel 2 IoCs
- Modifies registry class 5 IoCs
- Suspicious behavior: EnumeratesProcesses 12 IoCs
- Suspicious behavior: RenamesItself 26 IoCs
- Suspicious use of AdjustPrivilegeToken 64 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\exe\unimed4.exe"C:\Users\Admin\AppData\Local\Temp\exe\unimed4.exe"1⤵
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\ProgramData\7C35.tmp"C:\ProgramData\7C35.tmp"2⤵
- Checks computer location settings
- Deletes itself
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\7C35.tmp >> NUL3⤵
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
desktop.ini
7C35.tmp
8iysYFBai.README.txt
DDDDDDDDDDD
DDDDDDDDDDD
memory/4548-1-0x00000000027D0000-0x00000000027E0000-memory.dmp
memory/4548-2-0x00000000027D0000-0x00000000027E0000-memory.dmp
memory/4548-0-0x00000000027D0000-0x00000000027E0000-memory.dmp
memory/4984-337-0x0000000002420000-0x0000000002430000-memory.dmp
memory/4984-336-0x000000007FE40000-0x000000007FE41000-memory.dmp
memory/4984-342-0x0000000002420000-0x0000000002430000-memory.dmp
memory/4984-357-0x000000007FDC0000-0x000000007FDC1000-memory.dmp
memory/4984-355-0x000000007FE20000-0x000000007FE21000-memory.dmp
memory/4984-369-0x0000000002420000-0x0000000002430000-memory.dmp
memory/4984-370-0x0000000002420000-0x0000000002430000-memory.dmp
memory/4984-374-0x000000007FE00000-0x000000007FE01000-memory.dmp
memory/4984-373-0x000000007FDE0000-0x000000007FDE1000-memory.dmp