Resubmissions
30-04-2024 10:29
240430-mjb7fshh74 1026-04-2024 02:29
240426-cytpyahd23 1026-04-2024 02:23
240426-cvm3zshc82 1025-04-2024 03:51
240425-eekn2aeg39 10Analysis
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max time kernel
143s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
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submitted
26-04-2024 02:29
General
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Target
Document.doc.scr
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Size
194KB
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MD5
50e5dec57451005668704281688ca55d
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SHA1
67dd4ac7eb8c193b39149b34d3a0d5bc21c3f200
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SHA256
062683257386c9e41a1cd1493f029d817445c37f7c65386d54122fa466419ce1
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SHA512
29ca4a44795c71d3e2b4e3417355ebb93765157d464d6d5a3fe6774056d934d57081c72001fb29e47982da11e5a5ccfdbcc958d05a11fb49bd8bf84e6d0c61ad
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SSDEEP
3072:66glyuxE4GsUPnliByocWepRGbVZqid91h2ys+tU:66gDBGpvEByocWeubV4inP9B
Malware Config
Signatures
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Renames multiple (626) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Deletes itself 1 IoCs
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Executes dropped EXE 1 IoCs
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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
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Drops file in System32 directory 4 IoCs
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Sets desktop wallpaper using registry 2 TTPs 2 IoCs
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Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
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Enumerates system info in registry 2 TTPs 3 IoCs
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Modifies Control Panel 2 IoCs
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Modifies registry class 5 IoCs
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious behavior: RenamesItself 26 IoCs
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Suspicious use of AdjustPrivilegeToken 64 IoCs
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Suspicious use of SetWindowsHookEx 13 IoCs
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Suspicious use of WriteProcessMemory 11 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Document.doc.scr"C:\Users\Admin\AppData\Local\Temp\Document.doc.scr" /S1⤵
- 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:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵
- Drops file in System32 directory
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C:\ProgramData\B264.tmp"C:\ProgramData\B264.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\B264.tmp >> NUL3⤵
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc1⤵
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C:\Windows\system32\printfilterpipelinesvc.exeC:\Windows\system32\printfilterpipelinesvc.exe -Embedding1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
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C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE/insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{63A3D2D6-7ACA-4CF0-96C2-4D3EFBC1B7DD}.xps" 1335857221666700002⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3804 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
129B
MD5de0e6801e8983d67d85f8077f4bb84ca
SHA113c81bbfb2e788d37b3a163420c2ea1f81c93b2e
SHA2564b71b8f697f280045191b40d3ac6372d44a763cf054fa6a31cb16794dda7c575
SHA512004237e1239700e3815d174a0f987a4095f27d4e200fcc34cbae74a2cc8d2a5ca69972b857db74e0aea32931abe0f5b5cdf69108637384e065c56c6afd97a023
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Filesize
14KB
MD5294e9f64cb1642dd89229fff0592856b
SHA197b148c27f3da29ba7b18d6aee8a0db9102f47c9
SHA256917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
SHA512b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf
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Filesize
434B
MD5ad29bd8c66e114ff57c943d16c78f72a
SHA15ab070ee89a36f38facae4dfc8ec5ce3e59af46e
SHA2566fe668fe8bf69158d1fd08e90f3cff60c1df410bf752635bf152853b6112549c
SHA512a53121e2379aa9c3bc52d073498a54f26383834f6d6636b4b3831010565c80bf0da07511907eab7bd92f9796e559958b1c0ebea4c4b0f0d869e95b7deb5da7f1
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Filesize
194KB
MD593d91297fbe92ab2fc68bc8fd2ee8460
SHA1b00bda880718d8a4658173898781fd2d209c0930
SHA2566ce524fcf8630b35846b02f3454c4b15440109196d10db38d15ea9013c252b45
SHA512421ceb27773b1710ede29d6ef2fc98e84378c876b4703968f689d016759f359439d99bd9cb74d3f9f4db56fcfafbd1fd0f4d8d4425053b84ec982d9b0c86d6fe
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Filesize
4KB
MD545efe852802919748f76e15d2f1e8beb
SHA106f907902194e827a70b280f36f9f90ca72bd534
SHA256b6d9e616027e5cd951f85f9f381c097f86122b5c966529bdb8f3c47716583972
SHA512d5b7d75a7a143dd09ba6784dcb2567099a0c7f3c778a6f504010d3eda567a6917f116dc43871fad769c1924de8d517a0f5c5b621faf42a75f6eba2c742ebc7f9
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Filesize
4KB
MD5971b267e338471f6d90dab2144404703
SHA141015df98c860637da40c112d6531b0967fbd89b
SHA25699cd691ff7d7063674fd31b27915ecb496fdc2c31df73997923a33533428d2ba
SHA5128cf05b1fdfe559b6c2e1b5dc2312ffbe4af21d7ebaff02565711f923c5e0494141cda99f20962e9658efa6e4b19bd4c91940c89a3bd2ac5b5a311811f5b1f9bb
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Filesize
129B
MD54c0c0e6df73bf1a223eb5a0aa39edb62
SHA15af81211387df84bde6c8457bf7f75018b082afb
SHA256816b99a15136dc3ab4be2fc558bcc8223450fffa75840355a9c6f812e3a2c756
SHA512aa7864d912b388270cd4e00e5cd571eeb97015c578bae80d795320975b902c5a56c9b7788bb951aac222f976151d5fdaec1e4a4796fce96b8e1fb05adbb62e92
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Filesize
64KB
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Filesize
64KB
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Filesize
64KB
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Filesize
64KB
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Filesize
64KB
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Filesize
64KB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
64KB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
64KB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
2.0MB
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Filesize
64KB
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Filesize
2.0MB
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Filesize
64KB
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Filesize
2.0MB
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Filesize
64KB
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Filesize
64KB
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Filesize
2.0MB
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Filesize
64KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
28KB
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Filesize
4KB
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Filesize
64KB