Analysis
-
max time kernel
144s -
max time network
179s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
30-11-2022 18:25
Static task
static1
Behavioral task
behavioral1
Sample
3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe
Resource
win7-20220812-en
General
-
Target
3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe
-
Size
123KB
-
MD5
01f4a2731af96970caec4540b7bf496e
-
SHA1
1e6264b2243af096fcb4d6658fcbbdd6498f8c42
-
SHA256
3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789
-
SHA512
38a8440a318651c67fee6cc8e79e74d64966743a8af1f1becfc8f2769bbd24f2287ae2d76ced0c0fd459f79c9e269c034adde287e58bff67919e8806df54445d
-
SSDEEP
1536:HXG6Rx3EQR3Mp5UXir1UBbaWzSVvplvCk+mhdIyOHrgZJJgafAMT7KXavwCp:HXGU359Mp6w1aazRDKuOafb/KXavwCp
Malware Config
Signatures
-
Drops file in System32 directory 4 IoCs
Processes:
culturesubs.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 culturesubs.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE culturesubs.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies culturesubs.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 culturesubs.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Modifies data under HKEY_USERS 3 IoCs
Processes:
culturesubs.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix culturesubs.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" culturesubs.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" culturesubs.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
Processes:
3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.execulturesubs.execulturesubs.exepid process 1792 3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe 1792 3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe 1704 3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe 1704 3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe 2648 culturesubs.exe 2648 culturesubs.exe 3016 culturesubs.exe 3016 culturesubs.exe 3016 culturesubs.exe 3016 culturesubs.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exepid process 1704 3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.execulturesubs.exedescription pid process target process PID 1792 wrote to memory of 1704 1792 3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe 3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe PID 1792 wrote to memory of 1704 1792 3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe 3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe PID 1792 wrote to memory of 1704 1792 3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe 3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe PID 2648 wrote to memory of 3016 2648 culturesubs.exe culturesubs.exe PID 2648 wrote to memory of 3016 2648 culturesubs.exe culturesubs.exe PID 2648 wrote to memory of 3016 2648 culturesubs.exe culturesubs.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe"C:\Users\Admin\AppData\Local\Temp\3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe"C:\Users\Admin\AppData\Local\Temp\3aed05a09f1123a511c7db979ce32689cde973fd844332e0976fd9004ce50789.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
-
C:\Windows\SysWOW64\culturesubs.exe"C:\Windows\SysWOW64\culturesubs.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\culturesubs.exe"C:\Windows\SysWOW64\culturesubs.exe"2⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
memory/1704-136-0x0000000000000000-mapping.dmp
-
memory/1704-142-0x0000000000400000-0x0000000000415000-memory.dmpFilesize
84KB
-
memory/1704-139-0x0000000000400000-0x0000000000421000-memory.dmpFilesize
132KB
-
memory/1704-138-0x0000000000400000-0x0000000000421000-memory.dmpFilesize
132KB
-
memory/1792-135-0x0000000000400000-0x0000000000421000-memory.dmpFilesize
132KB
-
memory/1792-137-0x0000000000400000-0x0000000000415000-memory.dmpFilesize
84KB
-
memory/1792-132-0x0000000000580000-0x0000000000592000-memory.dmpFilesize
72KB
-
memory/1792-134-0x0000000000580000-0x0000000000592000-memory.dmpFilesize
72KB
-
memory/1792-133-0x0000000000400000-0x0000000000421000-memory.dmpFilesize
132KB
-
memory/2648-141-0x0000000000400000-0x0000000000421000-memory.dmpFilesize
132KB
-
memory/3016-140-0x0000000000000000-mapping.dmp
-
memory/3016-143-0x0000000000400000-0x0000000000421000-memory.dmpFilesize
132KB
-
memory/3016-144-0x0000000000400000-0x0000000000421000-memory.dmpFilesize
132KB