Analysis
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max time kernel
121s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
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submitted
25-04-2024 14:27
General
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Target
Document.doc.scr
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Size
194KB
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MD5
b7b4c97132d03eead1fa9a9352dee6c2
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SHA1
c9eb1bdc528076fa9c91668addf0723294ac1575
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SHA256
1ecea8b0bc92378bf2bdd1c14ae1628c573569419b91cc34504d2c3f8bb9f8b2
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SHA512
cb0023bc6783a94a27d2d4a67c214e8657fd334d1a94a7dba51277363dee2a67e7ecc5fc0788cead1c4e0e2dc7d9aa758203f89dce162184869d20a44d171903
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SSDEEP
3072:v6glyuxE4GsUPnliByocWepXKD0/9Wy1Og/ZK99r:v6gDBGpvEByocWehKD0/EWfg3
Malware Config
Signatures
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Renames multiple (270) 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\1CA5.tmp"C:\ProgramData\1CA5.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\1CA5.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\desktop.iniFilesize
129B
MD54bd734595ba4459d9f9caeaa2817992b
SHA15f1f1b00f47fa769c45637550c60ffb7ff5b01fb
SHA25656ba8e06cbf14ae0af1d02e8d109ac3749ad47dbcd32632db0d2b88542adbf3d
SHA5128e4ebba2cb56231ba3a210ea2a696f9823a0ca7157fe37aa3e821c74320bacf8b8ab40b58b6e11a3132e33f31da1302193c85334e51d573d0c34183d88015be8
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C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDFilesize
194KB
MD5513a2bbfd9873e5f064dc5e0f29ae448
SHA1f48788df43139ab539bcd44e25ea9005bc78b981
SHA256034a7c87e788c761b0c30a2e84c2ea3005a9fd81a7205e5bd4bad688ebb4237b
SHA51211fcf90fc9c50ef35a258d750c5b1b664344cb2f6b6b82ccedc297597c8c29fb38361cac7f2c5c9a6bc16366c21df27509c55d25c400f3a16caebc9b33f3ca7c
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C:\te8ZzuVLn.README.txtFilesize
434B
MD5ad29bd8c66e114ff57c943d16c78f72a
SHA15ab070ee89a36f38facae4dfc8ec5ce3e59af46e
SHA2566fe668fe8bf69158d1fd08e90f3cff60c1df410bf752635bf152853b6112549c
SHA512a53121e2379aa9c3bc52d073498a54f26383834f6d6636b4b3831010565c80bf0da07511907eab7bd92f9796e559958b1c0ebea4c4b0f0d869e95b7deb5da7f1
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F:\$RECYCLE.BIN\S-1-5-21-3627615824-4061627003-3019543961-1000\DDDDDDDDDDDFilesize
129B
MD5892c011b8a7f36469997c277f88b5d0e
SHA13a24a32a67c7a9f4525c7b4308e46a20299dcab4
SHA256c230d2b4b380f65953d2f3a04d51682945b559cec4a98441855413ac30879a8c
SHA512da038ea223525440ced6e350268c7d6f7f7e93c718456ca110078235be6e6653dfb5a2404001eec2725544607e70288785ea18d1538e4ead0d6a4397d513f797
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\ProgramData\1CA5.tmpFilesize
14KB
MD5294e9f64cb1642dd89229fff0592856b
SHA197b148c27f3da29ba7b18d6aee8a0db9102f47c9
SHA256917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
SHA512b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf
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memory/2680-778-0x000000007EFA0000-0x000000007EFA1000-memory.dmpFilesize
4KB
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memory/2680-780-0x0000000000390000-0x00000000003D0000-memory.dmpFilesize
256KB
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memory/2680-786-0x000000007EF80000-0x000000007EF81000-memory.dmpFilesize
4KB
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memory/2680-787-0x000000007EF20000-0x000000007EF21000-memory.dmpFilesize
4KB
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memory/2680-810-0x000000007EF40000-0x000000007EF41000-memory.dmpFilesize
4KB
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memory/2680-811-0x000000007EF40000-0x000000007EF41000-memory.dmpFilesize
4KB
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memory/2784-0-0x00000000004D0000-0x0000000000510000-memory.dmpFilesize
256KB