Analysis
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max time kernel
119s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
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submitted
26-04-2024 07:15
General
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Target
Document.doc.scr.exe
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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 (271) 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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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.exe"C:\Users\Admin\AppData\Local\Temp\Document.doc.scr.exe"1⤵
- 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\22EC.tmp"C:\ProgramData\22EC.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\22EC.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-1-5-21-3627615824-4061627003-3019543961-1000\NNNNNNNNNNNFilesize
129B
MD5b727637d3031deb139b6af99665d8105
SHA1726774a9807fea41991f831a330f5995b56f03df
SHA25649355e885e2148623d267b46bc4d15862cf857ede59e9e803849010cb7796765
SHA5125482021f2c0267afb9453e711e340a6e7f38018568e0ab66b763fe1cf700d5e86f1e52db6af52289f0962e7948cdf3a9837d8aa0d9187f2f4eb7c9f97c54d8ce
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C:\ProgramData\22EC.tmpFilesize
14KB
MD5294e9f64cb1642dd89229fff0592856b
SHA197b148c27f3da29ba7b18d6aee8a0db9102f47c9
SHA256917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
SHA512b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf
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C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDFilesize
194KB
MD51ba642e07fbd24ce2f2b3d9d9b4d8a9c
SHA1acad2a26344a3b425ab9ae67d2cae0c4ffd4bd52
SHA256a57930af8f6f106f486ac9d2aa4289f2ee8acaa1661239c7ed987b3d57309105
SHA51210c86f52e5c79be55ee0bc0b9ae1506d21866d993530ca1d7f1c24b7cf006901da0a03ab0c1a2b5f6571410000b6e9004e140d1e976576474eb4704ba295e0d9
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C:\jC7CNxlVt.README.txtFilesize
434B
MD5ad29bd8c66e114ff57c943d16c78f72a
SHA15ab070ee89a36f38facae4dfc8ec5ce3e59af46e
SHA2566fe668fe8bf69158d1fd08e90f3cff60c1df410bf752635bf152853b6112549c
SHA512a53121e2379aa9c3bc52d073498a54f26383834f6d6636b4b3831010565c80bf0da07511907eab7bd92f9796e559958b1c0ebea4c4b0f0d869e95b7deb5da7f1
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F:\$RECYCLE.BIN\S-1-5-21-3627615824-4061627003-3019543961-1000\DDDDDDDDDDDFilesize
129B
MD5a0e9dd7f563c3ddf2e9b0255809b6061
SHA1164e8df75ce6cea8e3fbf0cff2741bcb2e8ee604
SHA256383e166f937a1eee6c8b374c0a26b177e78cb4612468f30db10bc0cc47b0b11e
SHA5121cefcc8d7e0e0ff8118fe45cd812fdd45cf366c728f144d8973fb1301260f6a2764e1de975bc05658bb2342ece2e618c9456bbb4189c0bbb7740fd5bdbd8c365
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memory/1664-813-0x000000007EF60000-0x000000007EF61000-memory.dmpFilesize
4KB
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memory/1664-812-0x000000007EF40000-0x000000007EF41000-memory.dmpFilesize
4KB
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memory/1664-789-0x000000007EF80000-0x000000007EF81000-memory.dmpFilesize
4KB
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memory/1664-788-0x00000000003B0000-0x00000000003F0000-memory.dmpFilesize
256KB
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memory/1664-787-0x00000000003B0000-0x00000000003F0000-memory.dmpFilesize
256KB
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memory/1664-790-0x000000007EF20000-0x000000007EF21000-memory.dmpFilesize
4KB
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memory/1664-779-0x000000007EFA0000-0x000000007EFA1000-memory.dmpFilesize
4KB
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memory/3028-0-0x0000000000CE0000-0x0000000000D20000-memory.dmpFilesize
256KB