Analysis Overview
SHA256
bc6f40f97e2c03771a33b3cbe4918550d16b02cd9915301b6719de620b1ef22d
Threat Level: Known bad
The file 2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside was found to be: Known bad.
Malicious Activity Summary
Rule to detect Lockbit 3.0 ransomware Windows payload
Lockbit family
Lockbit
Renames multiple (619) files with added filename extension
Renames multiple (320) files with added filename extension
Loads dropped DLL
Deletes itself
Executes dropped EXE
Reads user/profile data of web browsers
Drops desktop.ini file(s)
Suspicious use of NtSetInformationThreadHideFromDebugger
Sets desktop wallpaper using registry
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
Modifies Control Panel
Suspicious behavior: RenamesItself
Suspicious behavior: EnumeratesProcesses
Modifies registry class
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-29 20:25
Signatures
Lockbit family
Rule to detect Lockbit 3.0 ransomware Windows payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-29 20:25
Reported
2024-02-29 20:28
Platform
win10v2004-20240226-en
Max time kernel
152s
Max time network
154s
Command Line
Signatures
Lockbit
Renames multiple (619) files with added filename extension
Reads user/profile data of web browsers
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | C:\$Recycle.Bin\S-1-5-21-557049126-2506969350-2798870634-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
| File opened for modification | F:\$RECYCLE.BIN\S-1-5-21-557049126-2506969350-2798870634-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.RNnzxAMZJ\ = "RNnzxAMZJ" | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\RNnzxAMZJ\DefaultIcon | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\RNnzxAMZJ | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\RNnzxAMZJ\DefaultIcon\ = "C:\\ProgramData\\RNnzxAMZJ.ico" | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\.RNnzxAMZJ | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 114.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.173.189.20.in-addr.arpa | udp |
Files
memory/1372-1-0x00000000025F0000-0x0000000002600000-memory.dmp
memory/1372-0-0x00000000025F0000-0x0000000002600000-memory.dmp
C:\$Recycle.Bin\S-1-5-21-557049126-2506969350-2798870634-1000\CCCCCCCCCCC
| MD5 | 85186a6830f10cdd1c292b7e94225733 |
| SHA1 | 0b2a7278f796466028ebcb8a4c84bfb0c252bce1 |
| SHA256 | 2888340d4523b6eb9228fb2ead9c761e23bbaf3123cc67c67447b9cb3c604f02 |
| SHA512 | ec484fe8e25e0dad5bf230083c951176fb17ca2df9ae97f4e210e04c2a984bdb009bb8024942d03a23c14e050715d956cf017f3ee770c0b1e77a8a3dd122b38f |
F:\$RECYCLE.BIN\S-1-5-21-557049126-2506969350-2798870634-1000\DDDDDDDDDDD
| MD5 | 159f76454805ede9cd0634bbded45486 |
| SHA1 | b57ecdd35e0f3f831c5273a85efdf5b7c09e743a |
| SHA256 | 6a05145ed4c36e875b6f175311dba4196d705aa5e65b7e20380e15bcfbcd423d |
| SHA512 | fadd47c2cb7bbd7d1652c8ca6f935b618057e6a6fd11383a9c5079fc1ed3274347c64edec73300e54e8bf723e5b4ef0e724c1f05b1c11bd510b4b396729b2ce7 |
C:\RNnzxAMZJ.README.txt
| MD5 | 5be2a86d58e0e9a5edabe16c0ac88262 |
| SHA1 | fbab31e15cc9385242b44737b6c2d82c728f6929 |
| SHA256 | 1c02a7cb7be5b97d382e740e4ec3a29b6342ac67d48c93a0fadda0f7b9172bcc |
| SHA512 | d35a5ac4d1a6bdb9b5825dc9f2b9918b0e31780b8deb7db43174f38a2e9c700abafae5ad2ed6e19140281e58a967327fa71b94b6c9171bbc6974f5acd3172db3 |
memory/1372-2776-0x00000000025F0000-0x0000000002600000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-29 20:25
Reported
2024-02-29 20:27
Platform
win7-20240221-en
Max time kernel
118s
Max time network
123s
Command Line
Signatures
Lockbit
Renames multiple (320) files with added filename extension
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
Reads user/profile data of web browsers
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | C:\$Recycle.Bin\S-1-5-21-1650401615-1019878084-3673944445-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
| File opened for modification | F:\$RECYCLE.BIN\S-1-5-21-1650401615-1019878084-3673944445-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\RNnzxAMZJ.bmp" | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\RNnzxAMZJ.bmp" | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
Enumerates physical storage devices
Modifies Control Panel
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1650401615-1019878084-3673944445-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\.RNnzxAMZJ | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\.RNnzxAMZJ\ = "RNnzxAMZJ" | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\RNnzxAMZJ\DefaultIcon | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\RNnzxAMZJ | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\RNnzxAMZJ\DefaultIcon\ = "C:\\ProgramData\\RNnzxAMZJ.ico" | C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
| N/A | N/A | C:\ProgramData\B18.tmp | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_2ba5460b0189eb83e8949e20a3588074_darkside.exe"
C:\ProgramData\B18.tmp
"C:\ProgramData\B18.tmp"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\B18.tmp >> NUL
C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x154
Network
Files
memory/2924-0-0x00000000007A0000-0x00000000007E0000-memory.dmp
C:\$Recycle.Bin\S-1-5-21-1650401615-1019878084-3673944445-1000\desktop.ini
| MD5 | 57660a13b5095f269f93bb58a5209d9b |
| SHA1 | c242df9916c2ff258818ff50cdf004a88bb156e9 |
| SHA256 | 95b0c4a596b49eb7bf3f800d8eb8539f8745aa5a9ce4a0f5ba7dff93b34a5b13 |
| SHA512 | ee1a8dd778c604807bd095d786e30a76a31d8b1a1a3d20e4aea01547a6270b4f2fffa9b9f95e5a16f05828cf4593455b5d5d5a91dbe33b08dddf4ed8c4cc9ec3 |
F:\$RECYCLE.BIN\S-1-5-21-1650401615-1019878084-3673944445-1000\FFFFFFFFFFF
| MD5 | 4e7a7089fff5d4e3801ed8c2a2d5c9d3 |
| SHA1 | b1aa38cc072179364c5fcf15dc9d581f25742a5c |
| SHA256 | 13c4dee49eb9b77f3c842aa6a60a9b8c662a44abdc05e8a4061e68054c8d6891 |
| SHA512 | 15c73bcf5e6ea2cf55216f4166c3118c97c8861198735d6a92d30c1a80316c3cf392381d65741da362b67adaaca949e6001cd8b006c0644fc4ed6c2dfbd7996f |
C:\RNnzxAMZJ.README.txt
| MD5 | d48a1f8c445b539383382d927394319b |
| SHA1 | 32c6bc25a450883576b971cb8fb30a586ae7aa74 |
| SHA256 | fb19951b9497d05ddfdd0fcab004a87ef89e56532cd51b15540aa838e50a3228 |
| SHA512 | be1baadc001ff418c9ef38d9501579507943b6e7316a91142f2b61aef85fa0a6f4bb108d422ba1aa231f47f2389e2c58238d87db5ab0bdb6defb26c7043fbe01 |
\ProgramData\B18.tmp
| MD5 | 294e9f64cb1642dd89229fff0592856b |
| SHA1 | 97b148c27f3da29ba7b18d6aee8a0db9102f47c9 |
| SHA256 | 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2 |
| SHA512 | b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf |
memory/2844-838-0x000000007EFA0000-0x000000007EFA1000-memory.dmp
memory/2844-839-0x00000000021C0000-0x0000000002200000-memory.dmp
memory/2844-842-0x000000007EF80000-0x000000007EF81000-memory.dmp
memory/2844-844-0x000000007EF20000-0x000000007EF21000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
| MD5 | ac9c0f0e0e8fac51b3d4e93deae81e28 |
| SHA1 | d0b7994ee57fb8179fc96db96bf2646e319aae46 |
| SHA256 | f99a86681faf4a44afcbfd37c6b6befde0cfddaced61d767381158e996c717d1 |
| SHA512 | 3de6054f7074fd2db3817f1b9984bd2ea06688b3dbcabce107e0fa4e2f8b91a1dce95f335db44fcead6eb6d28f202fb00670da1aac85fa1662b4efc675f4ee72 |
memory/2844-870-0x000000007EF40000-0x000000007EF41000-memory.dmp
memory/2844-871-0x000000007EF60000-0x000000007EF61000-memory.dmp