Analysis
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max time kernel
121s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
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submitted
25-04-2024 15:35
General
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Target
Document.doc.scr
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Size
194KB
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MD5
ae811bd6440b425e6777f0ca001a9743
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SHA1
70902540ead269971e149eaff568fb17d04156af
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SHA256
86e17aa882c690ede284f3e445439dfe589d8f36e31cbc09d102305499d5c498
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SHA512
3617d8e77c221525125778cf64f2525136f7958766f5bed0fd7bfe00e7f738017d2840972acc628e4c3471b93cf6d52ccd619f49bdbbcff824c12cac8e1ea88e
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SSDEEP
3072:a6glyuxE4GsUPnliByocWepiHkZmlkQIQP6fo:a6gDBGpvEByocWeQwLAPm
Malware Config
Signatures
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Renames multiple (331) 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\258A.tmp"C:\ProgramData\258A.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\258A.tmp >> NUL3⤵
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x14c1⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\$Recycle.Bin\S-1-5-21-2248906074-2862704502-246302768-1000\desktop.iniFilesize
129B
MD52b6abd7883f05cc5cae469980d3d9f1a
SHA1d210017f5cf5e3f93c73269920120e97c754bd6e
SHA25616c11c81fe9b0f8dd8c86fd24fc18ef591f4e6f0f541e3eacece8ee943e4f222
SHA512edc860684f3a0178e5eb6f1353cf0cf9bd0f8b319adeb612ddacf43becd050c83a789a7f3ede8eebcae681f432ebc7298cfce886695fd6441ddb648c7003148e
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C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDFilesize
194KB
MD58f5e6d06bedc4d871d3b0c925bad28b4
SHA15fe6ca5b08f22a7ed621b0cc5083859dc63d8a17
SHA256b8329dfbb5a1c14e2f290d3bd2958bd4425e00bbcbe126c5f0196e100d8cb968
SHA512b2002361e1cf3e392f5a9c2b547a65216d8ae4b6dcb8dbd804c34c796b4d28f8cdc240a926811465c24d98d8041057c310695564c9c06e9f364f01951ecbf498
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C:\kZd6jLIwz.README.txtFilesize
449B
MD5c2f46db865b0ba6ef8f9385cf458a56e
SHA10b2f94fcf38ef15f59bb86a3296b7da514b4ac4e
SHA256c25759e6083dd4bf592a6da2063c45def5adc9a6ef2ed15820128a0d838f70fe
SHA5129927b209ca26e3243fac9f003c6af7663ba84405346fbdb66c6f401387cd20ea3f99d63d0858ebdc76f2e6bc722d41e2a1f599bc6f7d97b0687dba95dea31b39
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F:\$RECYCLE.BIN\S-1-5-21-2248906074-2862704502-246302768-1000\DDDDDDDDDDDFilesize
129B
MD5545eb8420308e34c58edf33e932d9ee7
SHA1ab194f4c3a201132e0b59f551687a6dfc6e8d2b3
SHA25658f3ee05c7fb02160b209b17eea6c984983f88ef57e0aaa78418339897a8425c
SHA51253838bf531b1925a2384379bc3ac4022dd562eb55b21149c1cffcdb0737916f3b497baec71216f51f2b29172635e0822fe1f0ee6def9425aa075d15ea81c0441
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\ProgramData\258A.tmpFilesize
14KB
MD5294e9f64cb1642dd89229fff0592856b
SHA197b148c27f3da29ba7b18d6aee8a0db9102f47c9
SHA256917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
SHA512b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf
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memory/2756-859-0x0000000000390000-0x00000000003D0000-memory.dmpFilesize
256KB
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memory/2756-864-0x0000000000390000-0x00000000003D0000-memory.dmpFilesize
256KB
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memory/2756-857-0x000000007EFA0000-0x000000007EFA1000-memory.dmpFilesize
4KB
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memory/2756-867-0x000000007EF80000-0x000000007EF81000-memory.dmpFilesize
4KB
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memory/2756-868-0x000000007EF20000-0x000000007EF21000-memory.dmpFilesize
4KB
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memory/2756-890-0x000000007EF40000-0x000000007EF41000-memory.dmpFilesize
4KB
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memory/2756-891-0x000000007EF60000-0x000000007EF61000-memory.dmpFilesize
4KB
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memory/3012-0-0x0000000000AB0000-0x0000000000AF0000-memory.dmpFilesize
256KB