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
151s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20240221-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 (341) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Deletes itself 1 IoCs
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Executes dropped EXE 1 IoCs
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Loads dropped DLL 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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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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Modifies Control Panel 2 IoCs
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Modifies registry class 5 IoCs
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Opens file in notepad (likely ransom note) 1 IoCs
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Suspicious behavior: EnumeratesProcesses 14 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 FindShellTrayWindow 1 IoCs
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Suspicious use of WriteProcessMemory 9 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⤵
- Loads dropped DLL
- 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\B126.tmp"C:\ProgramData\B126.tmp"2⤵
- 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\B126.tmp >> NUL3⤵
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x1541⤵
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\Qs2QSInbk.README.txt1⤵
- Opens file in notepad (likely ransom note)
- Suspicious use of FindShellTrayWindow
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
129B
MD5f08728f03679bc6c52abd0d86bf7d6dd
SHA1a1cb3078a2bf3b2ae01edf3ac71795c84c194fb8
SHA256d2ea4c2c8e68f7a53191b636f79f5790a1b6e17465ef588e5d514fd77a6da3d0
SHA512545590c93e40648d5ed5aff709f4f582c5af5568c953676989cc8e45cd3651b1ca1da19b7078f4bc69ae0f729396f3b620f5cfe7514f1971e218474e40749b46
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Filesize
434B
MD5ad29bd8c66e114ff57c943d16c78f72a
SHA15ab070ee89a36f38facae4dfc8ec5ce3e59af46e
SHA2566fe668fe8bf69158d1fd08e90f3cff60c1df410bf752635bf152853b6112549c
SHA512a53121e2379aa9c3bc52d073498a54f26383834f6d6636b4b3831010565c80bf0da07511907eab7bd92f9796e559958b1c0ebea4c4b0f0d869e95b7deb5da7f1
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Filesize
194KB
MD585506e08f7eb32ef5fca1de3378fd100
SHA141670272bee596f7e6b5ca85fa15156abac13694
SHA256317404c6c5cd5d4c67eb410d88c6129a76931acaa7ca97e8893718005c4c933b
SHA51228aaf258aeb59f0ebeeab1fe035b914318d91f3a2b9ca01b984549b5a0ab1f4bc2801d7994090004456d9ff1348807c1d3da775a51a7e72655c623a5cfb8af85
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Filesize
129B
MD5aca137f2edef42494bc8d25f8cd9c2cc
SHA1c676bc0c6268c41c1ade94df2933dd73b44cc33d
SHA256962b5f663e567cdc85a521892d0780bc646f27fc80a2dd7d551a83b8d7d3688e
SHA5120ca59653e13407d7195a2b1228bfafe9c873adaa181212df392dc00e013251d0bdd3d8fcf4628373e75c5789152bc86c162f483c778d748100a4ca1094408948
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Filesize
14KB
MD5294e9f64cb1642dd89229fff0592856b
SHA197b148c27f3da29ba7b18d6aee8a0db9102f47c9
SHA256917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
SHA512b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf
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Filesize
256KB
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Filesize
4KB
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Filesize
256KB
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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
4KB
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Filesize
28KB
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Filesize
256KB