Analysis
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max time kernel
120s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
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submitted
27-04-2024 01:30
General
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Target
Document.doc.scr
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Size
194KB
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MD5
407ea767aa26ae13f9ff20d0999c8dda
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SHA1
07e615132ef78e827047ffc4cc6c9d44f5a976fd
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SHA256
f2198deecddd5ae56620b594b6b20bf8a20f9c983d4c60144bc6007a53087ce4
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SHA512
6c14d07b497af375f2f4db4da321ed7e5fb60a6f26281bcdbfc513eb1033d98442ff83ee58849a721bd7e14a0b7094b98397923c35bd4b6ae91c179784de6b02
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SSDEEP
3072:L6glyuxE4GsUPnliByocWepVeKna4iJ0Cv+LmaGqsqRxB:L6gDBGpvEByocWePk4iJ0C2LYcx
Malware Config
Signatures
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Renames multiple (308) 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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Modifies Control Panel 2 IoCs
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Modifies registry class 5 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 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\1B1F.tmp"C:\ProgramData\1B1F.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\1B1F.tmp >> NUL3⤵
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x14c1⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
129B
MD543fcfead905b1e94b4393aeeca1cbb05
SHA103f6a049d7d5b727aa6091a162bbe859793ef939
SHA256c36487360534a5a5ccc4786a5d606d00fe4caaaf8c05cf4906bf5faf3cd8c9b5
SHA5123924ef53c0630ced283dd8b25429fe930be24694b3b0fea19492d4d8c44f6f9c616646e465a95a9a5d06407b89a9ce6cb12df95e17f612748ed0bf85bdf9b201
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Filesize
194KB
MD515e1a5259886f155b9542a93ecc96ad9
SHA157b9a8ec25037ef1716dc84092df63cba141ca4d
SHA2563b6d6bd2efaaacce2bd8085005df77059c3e849e3cc9d9db710f04d6cd8fc55d
SHA512532947b9c7fe85499c7c012bb47b991f564806b95f3011ebe6bf389f0c68571dff3e18490b4aedc7e4db2b047a4c6b925f83f0237c68e0e96722bbf934379791
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Filesize
434B
MD5ad29bd8c66e114ff57c943d16c78f72a
SHA15ab070ee89a36f38facae4dfc8ec5ce3e59af46e
SHA2566fe668fe8bf69158d1fd08e90f3cff60c1df410bf752635bf152853b6112549c
SHA512a53121e2379aa9c3bc52d073498a54f26383834f6d6636b4b3831010565c80bf0da07511907eab7bd92f9796e559958b1c0ebea4c4b0f0d869e95b7deb5da7f1
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Filesize
129B
MD592839d3d69bc66da1b28e01805c4975a
SHA14fe8404d72f11c4d5c2d4fbbb020908df51c921b
SHA256dc5012b181e9002384aba95a3f4c9ac0496e2b2bdb0cadb73eb58af59d27bf5a
SHA5128b6339465a96008b373cd5bc4bc7f5d9d94abcd8cc21860b1faa87923f878c219713f4972dc0ecff1cda815c1dae9d7877f1d55cbd3a07a3332b6e5a728ab396
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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
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
256KB