Analysis
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max time kernel
171s -
max time network
195s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
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submitted
23-11-2022 11:25
General
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Target
ffc070af48fb1f64e11630d2dfcd55f3afe325feb8dd78c6102a4d390fe3a24d.exe
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Size
5.7MB
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MD5
3322907ae113079bd33355e4e9f63d22
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SHA1
02134100cb5e2be44fab2f227fa3588d5e87ba34
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SHA256
ffc070af48fb1f64e11630d2dfcd55f3afe325feb8dd78c6102a4d390fe3a24d
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SHA512
a32fde7f82ab442405b69186c8ebd538d494b013aab3b70abc3df1f63eb5fd510a27a1bce55eaacdeae7e90b7bfd55b5d405c2d3bd371e30aec4d6b13a801675
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SSDEEP
98304:5L+p957/mfkAb0JOyEmi+thHGAa0P9CQOGCfRJ2jlTDZ2l4wdcACdcruV95cz6:N89J/ANzywiJlgQNUJ2BTDYiqcAViVwO
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
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Modifies AppInit DLL entries 2 TTPs
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Loads dropped DLL 3 IoCs
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Adds Run key to start application 2 TTPs 2 IoCs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Program Files directory 36 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 2 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\ffc070af48fb1f64e11630d2dfcd55f3afe325feb8dd78c6102a4d390fe3a24d.exe"C:\Users\Admin\AppData\Local\Temp\ffc070af48fb1f64e11630d2dfcd55f3afe325feb8dd78c6102a4d390fe3a24d.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\optprosetup.exeC:\Users\Admin\AppData\Local\Temp\\optprosetup.exe /VERYSILENT2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-HVB38.tmp\optprosetup.tmp"C:\Users\Admin\AppData\Local\Temp\is-HVB38.tmp\optprosetup.tmp" /SL5="$F014A,5286589,118784,C:\Users\Admin\AppData\Local\Temp\optprosetup.exe" /VERYSILENT3⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "c:\Program Files (x86)\Optimizer Pro\OptProCrash.dll",ENT -install4⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\is-7M6C8.tmp\OptProCrash.dllFilesize
3.4MB
MD58565b14afbe6625e11065a3526c75192
SHA12eff65173426ca303dec447d66028552629836d5
SHA256da5cd23d75fb370d412568ae909e113145e0e472d8a9a80b3e06ed3c8f839c11
SHA5122740810ab2042e8dd3b887566b0f2bc540ff07737a079c32cf35498e32729651db9466d2db33ff092d43b8735a0b6b83571a146e5503152ced971b23b9e56dd9
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C:\Users\Admin\AppData\Local\Temp\is-7M6C8.tmp\itdownload.dllFilesize
200KB
MD5d82a429efd885ca0f324dd92afb6b7b8
SHA186bbdaa15e6fc5c7779ac69c84e53c43c9eb20ea
SHA256b258c4d7d2113dee2168ed7e35568c8e03341e24e3eafc7a22a0d62e32122ef3
SHA5125bf0c3b8fa5db63205a263c4fa5337188173248bef609ba4d03508c50db1fd1e336f3041ce96d78cc97659357a83e6e422f5b079d893a20a683270e05f5438df
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C:\Users\Admin\AppData\Local\Temp\is-7M6C8.tmp\itdownload.dllFilesize
200KB
MD5d82a429efd885ca0f324dd92afb6b7b8
SHA186bbdaa15e6fc5c7779ac69c84e53c43c9eb20ea
SHA256b258c4d7d2113dee2168ed7e35568c8e03341e24e3eafc7a22a0d62e32122ef3
SHA5125bf0c3b8fa5db63205a263c4fa5337188173248bef609ba4d03508c50db1fd1e336f3041ce96d78cc97659357a83e6e422f5b079d893a20a683270e05f5438df
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C:\Users\Admin\AppData\Local\Temp\is-HVB38.tmp\optprosetup.tmpFilesize
1.1MB
MD550488cf899d007d697893fc72a823fb0
SHA1bc5512f623656ad69a054d558c35d463a5a8a6c1
SHA256d9b74c8ed046400b8966ca503bc5a4f0445736949651c4af8faefc68265652cf
SHA5122b275262a2f7a4a55bc40a8e3e264831273d04f197f52fabfbdb9720f0754da17d3da6a872590aebd5e4fc462b25b55c34c45e56fd7319bf1b52d847dd4f74a0
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C:\Users\Admin\AppData\Local\Temp\is-HVB38.tmp\optprosetup.tmpFilesize
1.1MB
MD550488cf899d007d697893fc72a823fb0
SHA1bc5512f623656ad69a054d558c35d463a5a8a6c1
SHA256d9b74c8ed046400b8966ca503bc5a4f0445736949651c4af8faefc68265652cf
SHA5122b275262a2f7a4a55bc40a8e3e264831273d04f197f52fabfbdb9720f0754da17d3da6a872590aebd5e4fc462b25b55c34c45e56fd7319bf1b52d847dd4f74a0
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C:\Users\Admin\AppData\Local\Temp\optprosetup.exeFilesize
5.5MB
MD53d31e999e8433d22b740ee0c55ac93ce
SHA173ad53e7f5198f124f70d31bf2b2c6511aa8caea
SHA256769ce23a88674e9ff07f08652c4fa2498dd6301359a2bc8fda5e50f59ebce6ba
SHA51285654a99bbb36c49490cdc91ad663bd25ca08b691c33002abc7258e9e0e3618734650dbbba51cfd915f80322253d0dd36eabce954a0da8f297d7072dabbc753b
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C:\Users\Admin\AppData\Local\Temp\optprosetup.exeFilesize
5.5MB
MD53d31e999e8433d22b740ee0c55ac93ce
SHA173ad53e7f5198f124f70d31bf2b2c6511aa8caea
SHA256769ce23a88674e9ff07f08652c4fa2498dd6301359a2bc8fda5e50f59ebce6ba
SHA51285654a99bbb36c49490cdc91ad663bd25ca08b691c33002abc7258e9e0e3618734650dbbba51cfd915f80322253d0dd36eabce954a0da8f297d7072dabbc753b
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memory/452-135-0x0000000000400000-0x0000000000427000-memory.dmpFilesize
156KB
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memory/452-137-0x0000000000400000-0x0000000000427000-memory.dmpFilesize
156KB
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memory/452-144-0x0000000000400000-0x0000000000427000-memory.dmpFilesize
156KB
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memory/452-132-0x0000000000000000-mapping.dmp
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memory/1124-146-0x0000000000000000-mapping.dmp
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memory/4024-138-0x0000000000000000-mapping.dmp
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memory/4024-143-0x0000000003300000-0x000000000333C000-memory.dmpFilesize
240KB