Analysis
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max time kernel
127s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-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:\Recovery\WindowsRE\Recovery_Instructions.html
href="[email protected]">[email protected]</a>
href="[email protected]">[email protected]</a>
Signatures
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Detect Neshta payload 9 IoCs
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MedusaLocker
Ransomware with several variants first seen in September 2019.
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MedusaLocker payload 2 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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Renames multiple (140) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE 4 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 4 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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Modifies registry class 2 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 18 IoCs
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System policy modification 1 TTPs 3 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe"C:\Users\Admin\AppData\Local\Temp\b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649.exe"1⤵
- Checks computer location settings
- 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\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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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\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3980,i,3239535018877284530,3457823197501312703,262144 --variations-seed-version --mojo-platform-channel-handle=4420 /prefetch:81⤵
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C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Windows\svchost.com"C:\Windows\svchost.com" "C:\Users\Admin\AppData\Local\Temp\3582-490\svhost.exe"2⤵
- Executes dropped EXE
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\3582-490\svhost.exeC:\Users\Admin\AppData\Local\Temp\3582-490\svhost.exe3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
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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
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
3Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2.4MB
MD58ffc3bdf4a1903d9e28b99d1643fc9c7
SHA1919ba8594db0ae245a8abd80f9f3698826fc6fe5
SHA2568268d3fefe8ca96a25a73690d14bacf644170ab5e9e70d2f8eeb350a4c83f9f6
SHA5120b94ead97374d74eaee87e7614ddd3911d2cf66d4c49abbfd06b02c03e5dd56fd00993b4947e8a4bcd9d891fa39cab18cc6b61efc7d0812e91eb3aea9cd1a427
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MD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e
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Filesize
4KB
MD599c77c89bfe9689d2dc5c1eba01c0536
SHA19ae077802e1942d44330a04b971f0e334cf62da9
SHA2567ec662a5dbf3fdabaf1d30db14c683c7b0bb43d3b15043669902580470731063
SHA512ddc059a8682a825c1f4e7564f0f51f2bce7b28d40eb1feafcce4471f21e0901d7e82cd09ee516a136ee7b5776ff2d6a40ad25448d33e57a6e524564bb27e6b45
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Filesize
678KB
MD55aa0a571567f8437556e9b00ae5a3532
SHA145377cb152832c9112db7909219fa87a6e760aae
SHA25673549f6017ad04e475e40e9d306b3e042d080843d8e7c029a5bb6b8ab7e34432
SHA512d320fecef75b4514b9cf154d41c3cc03e2cd8f6bf15ff0d7c97398127c0728cf0b24e5a46435573d38b384b1515876070f28daa7d37e81de10d1db2b27ae51ec
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Filesize
8B
MD5a91cb9908f7dc8fe8e8cb51510539b55
SHA17e669737ac7d258d463619cc4dccbc75ae10a1d4
SHA2561320f495082fdb1325d1170ae344eb6d84057efa9684c6c2af57675ce3276be2
SHA512289542bfebc597cf6a695b470c6a117dfc368691bf9351dc9048fbf889458deab647eebc8bb501a5aa00041486113a106f688377e4e0fd5661de2df30bdfa98b
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Filesize
719KB
MD58474039d83805eb7b447325c3a8d1ebb
SHA1a07d537f4253745a087709a9a07c449f84deed8d
SHA256b2493a580153291b69ca23190d00a00b1220cd0aadf469b3974fdaa726516649
SHA5123272091bbf123ba5e1592e8b2bd7740cddcb174fa158bc6980b25ee61d92387e94a25284736253f83a6eea78b427f6717e888e843db9d7759cfe9a7676576438
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Filesize
536B
MD5dea964894fc54c99ec1c56703c930282
SHA13a46f362308f2a3a908cf7090c4f51591c4fa7df
SHA256739a09fd8993d2141577604aa14d094b451b765294ec1045d0293970f0b2f2dd
SHA512e6b9766c4a9c67bc55fa7789f0645280912b0ef1bca7ec01ea0b57eaca4f1c27b8b6359667cbba57dd4f4699120ce21189350321a9b15a28cac5f1c32abc90ce
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Filesize
40KB
MD536fd5e09c417c767a952b4609d73a54b
SHA1299399c5a2403080a5bf67fb46faec210025b36d
SHA256980bac6c9afe8efc9c6fe459a5f77213b0d8524eb00de82437288eb96138b9a2
SHA5121813a6a5b47a9b2cd3958cf4556714ae240f2aa19d0a241b596830f0f2b89a33ec864d00ce6a791d323a58dfbff42a0fded65eefbf980c92685e25c0ec415d92
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Filesize
108KB
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Filesize
108KB
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Filesize
108KB
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Filesize
108KB
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Filesize
108KB
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Filesize
108KB