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Analysis
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max time kernel
94s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
26/08/2024, 13:55
Static task
static1
Behavioral task
behavioral1
Sample
F-Secure-Safe-Network-Installer.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
F-Secure-Safe-Network-Installer.exe
Resource
win10v2004-20240802-en
General
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Target
F-Secure-Safe-Network-Installer.exe
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Size
3.0MB
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MD5
9c15aac2f31dd9e1e8d64cf8f04ea5d6
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SHA1
aaeeb05a24f6e7ef77d46ba71794490afbc414ab
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SHA256
e082c6d30278139fdab5a7ddddecbcbafad12ab4dff1d5a960d9704fe635c007
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SHA512
0249416a9a1b526b887007704133166353fa97f9def8e57725092ee61f3bc0f5090238699c47733962495cd64550413acf25ff3086d1617e4440e9b6eba1a975
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SSDEEP
49152:+zk68h1xr/Rq09zUWUus6qidDQjvBJVSq2UCur80qDt5OXqj:+I6Q/Rq09zUWUus6qidE80qDt5OXqj
Malware Config
Extracted
C:\wlJ8FiR2h.README.txt
lockbit
http://lockbitsupt7nr3fa6e7xyb73lk6bw6rcneqhoyblniiabj4uwvzapqd.onion
http://lockbitsupuhswh4izvoucoxsbnotkmgq6durg7kficg6u33zfvq3oyd.onion
http://lockbitsupn2h6be2cnqpvncyhj4rgmnwn44633hnzzmtxdvjoqlp7yd.onion
http://lockbitsupp.uz
http://lockbitapt2yfbt7lchxejug47kmqvqqxvvjpqkmevv4l3azl3gy6pyd.onion
http://lockbitapt5x4zkjbcqmz6frdhecqqgadevyiwqxukksspnlidyvd7qd.onion
http://lockbitapt6vx57t3eeqjofwgcglmutr3a35nygvokja5uuccip4ykyd.onion
http://lockbitapt34kvrip6xojylohhxrwsvpzdffgs5z4pbbsywnzsbdguqd.onion
http://lockbitaptc2iq4atewz2ise62q63wfktyrl4qtwuk5qax262kgtzjqd.onion
http://lockbitaptjpikdqjynvgozhgc6bgetgucdk5xjacozeaawihmoio6yd.onion
http://lockbitaptq7ephv2oigdncfhtwhpqgwmqojnxqdyhprxxfpcllqdxad.onion
http://lockbitaptstzf3er2lz6ku3xuifafq2yh5lmiqj5ncur6rtlmkteiqd.onion
http://lockbitaptoofrpignlz6dt2wqqc5z3a4evjevoa3eqdfcntxad5lmyd.onion
Signatures
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Lockbit
Ransomware family with multiple variants released since late 2019.
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Rule to detect Lockbit 3.0 ransomware Windows payload 1 IoCs
resource yara_rule behavioral2/files/0x000a0000000233ab-10.dat family_lockbit -
Renames multiple (645) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Downloads MZ/PE file
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation F-Secure-Safe-Network-Installer.exe Key value queried \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation 3A27.tmp -
Executes dropped EXE 2 IoCs
pid Process 1104 installer.exe 1116 3A27.tmp -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops desktop.ini file(s) 2 IoCs
description ioc Process File opened for modification C:\$Recycle.Bin\S-1-5-21-2412658365-3084825385-3340777666-1000\desktop.ini installer.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2412658365-3084825385-3340777666-1000\desktop.ini installer.exe -
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
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Drops file in System32 directory 4 IoCs
description ioc Process File created C:\Windows\system32\spool\PRINTERS\00002.SPL splwow64.exe File created C:\Windows\system32\spool\PRINTERS\PPwxazqcpd9fwxpxq20kwztl0gb.TMP printfilterpipelinesvc.exe File created C:\Windows\system32\spool\PRINTERS\PPw5cs_xczeg1psn8y0i2f_xc3d.TMP printfilterpipelinesvc.exe File created C:\Windows\system32\spool\PRINTERS\PPsiqb8h1ci6focdxq3yp7isw2.TMP printfilterpipelinesvc.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\wlJ8FiR2h.bmp" installer.exe Set value (str) \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\wlJ8FiR2h.bmp" installer.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 1116 3A27.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language installer.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3A27.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString ONENOTE.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU ONENOTE.EXE -
Modifies Control Panel 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\Desktop\WallpaperStyle = "10" installer.exe Key created \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\Desktop installer.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.wlJ8FiR2h installer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.wlJ8FiR2h\ = "wlJ8FiR2h" installer.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\wlJ8FiR2h\DefaultIcon installer.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\wlJ8FiR2h installer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\wlJ8FiR2h\DefaultIcon\ = "C:\\ProgramData\\wlJ8FiR2h.ico" installer.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe 1104 installer.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeAssignPrimaryTokenPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeDebugPrivilege 1104 installer.exe Token: 36 1104 installer.exe Token: SeImpersonatePrivilege 1104 installer.exe Token: SeIncBasePriorityPrivilege 1104 installer.exe Token: SeIncreaseQuotaPrivilege 1104 installer.exe Token: 33 1104 installer.exe Token: SeManageVolumePrivilege 1104 installer.exe Token: SeProfSingleProcessPrivilege 1104 installer.exe Token: SeRestorePrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeSystemProfilePrivilege 1104 installer.exe Token: SeTakeOwnershipPrivilege 1104 installer.exe Token: SeShutdownPrivilege 1104 installer.exe Token: SeDebugPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeBackupPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe Token: SeSecurityPrivilege 1104 installer.exe -
Suspicious use of SetWindowsHookEx 13 IoCs
pid Process 1120 ONENOTE.EXE 1120 ONENOTE.EXE 1120 ONENOTE.EXE 1120 ONENOTE.EXE 1120 ONENOTE.EXE 1120 ONENOTE.EXE 1120 ONENOTE.EXE 1120 ONENOTE.EXE 1120 ONENOTE.EXE 1120 ONENOTE.EXE 1120 ONENOTE.EXE 1120 ONENOTE.EXE 1120 ONENOTE.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 3044 wrote to memory of 1104 3044 F-Secure-Safe-Network-Installer.exe 96 PID 3044 wrote to memory of 1104 3044 F-Secure-Safe-Network-Installer.exe 96 PID 3044 wrote to memory of 1104 3044 F-Secure-Safe-Network-Installer.exe 96 PID 1104 wrote to memory of 2524 1104 installer.exe 102 PID 1104 wrote to memory of 2524 1104 installer.exe 102 PID 4744 wrote to memory of 1120 4744 printfilterpipelinesvc.exe 105 PID 4744 wrote to memory of 1120 4744 printfilterpipelinesvc.exe 105 PID 1104 wrote to memory of 1116 1104 installer.exe 106 PID 1104 wrote to memory of 1116 1104 installer.exe 106 PID 1104 wrote to memory of 1116 1104 installer.exe 106 PID 1104 wrote to memory of 1116 1104 installer.exe 106 PID 1116 wrote to memory of 3196 1116 3A27.tmp 107 PID 1116 wrote to memory of 3196 1116 3A27.tmp 107 PID 1116 wrote to memory of 3196 1116 3A27.tmp 107
Processes
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C:\Users\Admin\AppData\Local\Temp\F-Secure-Safe-Network-Installer.exe"C:\Users\Admin\AppData\Local\Temp\F-Secure-Safe-Network-Installer.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3044 -
C:\Users\Admin\AppData\Local\Temp\installer.exe"C:\Users\Admin\AppData\Local\Temp\installer.exe"2⤵
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- System Location Discovery: System Language Discovery
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1104 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122883⤵
- Drops file in System32 directory
PID:2524
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C:\ProgramData\3A27.tmp"C:\ProgramData\3A27.tmp"3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1116 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\3A27.tmp >> NUL4⤵
- System Location Discovery: System Language Discovery
PID:3196
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc1⤵PID:4372
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C:\Windows\system32\printfilterpipelinesvc.exeC:\Windows\system32\printfilterpipelinesvc.exe -Embedding1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4744 -
C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE/insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{2A07EE3D-B211-4F3C-AC19-A3CA266102B7}.xps" 1336915413242000002⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
PID:1120
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
129B
MD5c67de3bb6d56076ac59606ee719349a4
SHA1b5794d0373cc85ef13a9859cd747d9606db3f403
SHA2560b35c315ce21137bdbc9f65a359c747be71620269b63250ae9d1a9a5d8b5e492
SHA5126005906c1a3f7662dac25365c340af659f3ead6a707dcee3bd6fd99ba927315824fa3530ae5cbc2b3e54a378df2ffebb18cfee9d1700be2a641d3438bd7e441e
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Filesize
14KB
MD5294e9f64cb1642dd89229fff0592856b
SHA197b148c27f3da29ba7b18d6aee8a0db9102f47c9
SHA256917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
SHA512b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf
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Filesize
150KB
MD5eeea1cfda2b7d9c29211e4d5a269f756
SHA10d33b53a028de073048093288c385d8fa965ee64
SHA256db9ad4c862933c0935f3c7226c2d4f2dac56f5d3c5950b24547727a35d8b79d9
SHA51285fd0c34cbdd8c05fa61bf1312e974ca855c4c3ca733027fbf5176fd17b7f705be40b36574424303d7902513cd64e49fa77223434dcd23487d9bba86ffcc877c
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Filesize
150KB
MD57e503c206e57f0295da017914a957d04
SHA196c375b9c57292db73c7ef2f2df16cf7be1604bb
SHA256274844568a6a9ce334d71efeac21f528d7b54b2cd4377c978cc1270c6ad986c4
SHA512cd4889ae107c54df854042e030eb431664d4db9d6dc908d1f1910ca49b89d247222f9d19440fcc2d9a120c95b56cd694750072ab9486eea961b8c33391344c1c
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Filesize
4KB
MD5be5d1e8adf13ecf01e400678f37a917c
SHA171916c24ab842d9221d992a48eb9e711a5c6c19f
SHA2565e486af867c6821c9fdf76d42f7ea353a1d3f15806d8f09041b77c653f291aad
SHA5121b12c4fae768a7fe39b81119529472087e4cf36778e697646b44f493a148b7635a7f4239d37599985f8bdaf998525a8254123eb1f12926102e5b8cb3f2cba8fc
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Filesize
3KB
MD5b9674de0868a93e9121bdb1d02d80130
SHA179d692fd03d3110a4358e2cc7442af9517489f3f
SHA2569268d24e96639cf4c0e8d74f9769092b415015692ea528820faaded6fc5b052c
SHA512b3264ad33eddedb2c18da883e2345247c762adc8a604991fce931cba06b86c361d23fa121e79d6c69948a2d5b9c1613139f401b971360d9d684abb5a61543c02
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Filesize
129B
MD5db373f659e045687d886528ba74579ac
SHA1f6bef27e35de9bdf96ed5b53a4e3dd9abeb6ce9e
SHA256c390d48a69c2a9e1c09a8271b4223ab6f5337c8ca8879a2fa99543c9bacab118
SHA512050e97c73aa961cee15ed93044b43098efb7efd9ec7fdfb54a94d960a3628c35f9f24c57f4bdd177b098e8fa2ccca543521161d633f9c401e6f1471e680d88f4