Analysis
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max time kernel
127s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
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submitted
08-08-2024 22:17
General
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Target
b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe
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Size
719KB
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MD5
8474039d83805eb7b447325c3a8d1ebb
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SHA1
a07d537f4253745a087709a9a07c449f84deed8d
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SHA256
b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649
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SHA512
3272091bbf123ba5e1592e8b2bd7740cddcb174fa158bc6980b25ee61d92387e94a25284736253f83a6eea78b427f6717e888e843db9d7759cfe9a7676576438
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SSDEEP
12288:q4UOTYQivI2qZ7aSgLwkFVpzUvest4ZEbjJLuhJVoM7SPd:bRTYVQ2qZ7aSgLwuVfstRJL6YM6
Malware Config
Extracted
C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\Recovery_Instructions.html
href="[email protected]">[email protected]</a>
href="[email protected]">[email protected]</a>
Signatures
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Detect Neshta payload 4 IoCs
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MedusaLocker
Ransomware with several variants first seen in September 2019.
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MedusaLocker payload 1 IoCs
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Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
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UAC bypass 3 TTPs 2 IoCs
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (212) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Executes dropped EXE 2 IoCs
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Loads dropped DLL 3 IoCs
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Modifies system executable filetype association 2 TTPs 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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Checks whether UAC is enabled 1 TTPs 1 IoCs
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Drops desktop.ini file(s) 1 IoCs
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Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
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Drops file in Program Files directory 64 IoCs
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Drops file in Windows directory 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 8 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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Interacts with shadow copies 3 TTPs 3 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
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Modifies registry class 1 IoCs
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious use of AdjustPrivilegeToken 63 IoCs
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Suspicious use of WriteProcessMemory 32 IoCs
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System policy modification 1 TTPs 3 IoCs
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe"C:\Users\Admin\AppData\Local\Temp\b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe"1⤵
- Loads dropped DLL
- Modifies system executable filetype association
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\3582-490\b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe"C:\Users\Admin\AppData\Local\Temp\3582-490\b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe"2⤵
- UAC bypass
- Executes dropped EXE
- Checks whether UAC is enabled
- Drops desktop.ini file(s)
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\SysWOW64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet3⤵
- System Location Discovery: System Language Discovery
- Interacts with shadow copies
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet3⤵
- System Location Discovery: System Language Discovery
- Interacts with shadow copies
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet3⤵
- System Location Discovery: System Language Discovery
- Interacts with shadow copies
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\taskeng.exetaskeng.exe {2C9A3735-64B1-433F-B0FD-699B66C8105B} S-1-5-21-3434294380-2554721341-1919518612-1000:ELZYPTFV\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe2⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Event Triggered Execution
1Change Default File Association
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Direct Volume Access
1Impair Defenses
1Disable or Modify Tools
1Indicator Removal
2File Deletion
2Modify Registry
3Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
547KB
MD5cf6c595d3e5e9667667af096762fd9c4
SHA19bb44da8d7f6457099cb56e4f7d1026963dce7ce
SHA256593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d
SHA512ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80
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Filesize
4KB
MD5f326397bd285678d0767a2442c672177
SHA161863b8f10125bdf1fb9dd5f0fd63037c89c3c21
SHA256552ac1d78219000d58703c174dfa1f98f65a1dbcdce0eb0101c03e5b220ca59b
SHA512829ba60bc3ceae7a53fe0190a8de0dc85aae35c74680fb52ac7b279ebdaa38a38ef5e806b811d67e29704e8d23cc095787e98c549238aefee0545d1f87b7ec4a
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Filesize
864KB
MD5765620f8770dadda48211beb99cf1a87
SHA1d6bc0e6698e6c43e61e644ab28c02a7e976d817b
SHA2568eee7cf6b0bf2152ab820ffbfe95a974df3d44fe7e7b05947f1fd66fa94ac745
SHA51280d17af24248c561e31313a41d2d4924901f625adf093a40cc4cd857cae67109eef029e38fec47dec31279d9c4dc982ada5b954084d11ed6515d48dde8a164fb
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Filesize
536B
MD55319739167256d6e74806025a841c5a7
SHA1c7c7592a910effecee882524ecb101fc646457b5
SHA2568d441aeb12b0dd84303821ac41103a68592ea958e26fd22c2dcaa239b43070d2
SHA51296e226dc4f63137a4f45b174f9bf4eef9d7fd43199ed42439f7855f91ec949bfac4ab14ff5a7364e8ba5c6f203b9862d1a5560632d9c417c9780cc5c39605bc5
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Filesize
252KB
MD59e2b9928c89a9d0da1d3e8f4bd96afa7
SHA1ec66cda99f44b62470c6930e5afda061579cde35
SHA2568899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043
SHA5122ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156
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Filesize
678KB
MD55aa0a571567f8437556e9b00ae5a3532
SHA145377cb152832c9112db7909219fa87a6e760aae
SHA25673549f6017ad04e475e40e9d306b3e042d080843d8e7c029a5bb6b8ab7e34432
SHA512d320fecef75b4514b9cf154d41c3cc03e2cd8f6bf15ff0d7c97398127c0728cf0b24e5a46435573d38b384b1515876070f28daa7d37e81de10d1db2b27ae51ec
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Filesize
108KB
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Filesize
108KB