Analysis
-
max time kernel
39s -
max time network
45s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
11-06-2022 18:23
Static task
static1
Behavioral task
behavioral1
Sample
25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe
Resource
win10v2004-20220414-en
General
-
Target
25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe
-
Size
143KB
-
MD5
88ae0425866fbbdd68c640cdaac784b7
-
SHA1
a375d487c7c199afe7aba81c8b57727354d54265
-
SHA256
25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945
-
SHA512
ceb59b6bf7b41de9378d6c1ec0c4b59d150c10641364c0ca21a6338e8fe4df49d48db9f9b54c730a4f56fb6509205c9455d8bd5f7f3a0bdf9300fb8be59a2a24
Malware Config
Extracted
metasploit
encoder/fnstenv_mov
Signatures
-
MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
-
Deletes itself 1 IoCs
Processes:
cmd.exepid process 1396 cmd.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
Processes:
25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exedescription ioc process File opened for modification \??\PhysicalDrive0 25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe -
Drops file in System32 directory 2 IoCs
Processes:
25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exedescription ioc process File created C:\Windows\SysWOW64\dllcache\nsch0st.exe 25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe File opened for modification C:\Windows\SysWOW64\dllcache\nsch0st.exe 25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Modifies registry class 3 IoCs
Processes:
25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ 25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" 25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key 25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exedescription pid process target process PID 296 wrote to memory of 1396 296 25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe cmd.exe PID 296 wrote to memory of 1396 296 25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe cmd.exe PID 296 wrote to memory of 1396 296 25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe cmd.exe PID 296 wrote to memory of 1396 296 25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe cmd.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe"C:\Users\Admin\AppData\Local\Temp\25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe"1⤵
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\25AAE0~1.EXE >> NUL2⤵
- Deletes itself
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
memory/296-54-0x0000000075BF1000-0x0000000075BF3000-memory.dmpFilesize
8KB
-
memory/296-55-0x0000000000400000-0x0000000000434000-memory.dmpFilesize
208KB
-
memory/296-56-0x0000000000330000-0x0000000000360000-memory.dmpFilesize
192KB
-
memory/296-58-0x0000000000400000-0x0000000000434000-memory.dmpFilesize
208KB
-
memory/296-59-0x0000000000330000-0x0000000000360000-memory.dmpFilesize
192KB
-
memory/1396-57-0x0000000000000000-mapping.dmp