Analysis
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max time kernel
150s -
max time network
33s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
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submitted
19-04-2023 17:59
General
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Target
V1Fast.bin.exe
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Size
56KB
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MD5
c3ccde9c3fab53d5c749b2186e997bdc
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SHA1
b494a696f4edbbd3831163dfd0f1b5efc134d068
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SHA256
c21de9109580e03f0fc0a71c10bfe2923927eb0dfe748bea47d550f1fe7f1715
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SHA512
2b72d43c3eba735ed69807f858ff59685df91fb7012d7bd868a08f0563c00832310fe9d7d160d5b633bc49c1f1d4b7c20c6ab2d9a39eea33ff8d00b683ccb586
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SSDEEP
1536:SNeRBl5PT/rx1mzwRMSTdLpJcQvW5NoDXMmX9S/b8V:SQRrmzwR5JsNoDcmXI/b8V
Malware Config
Extracted
C:\info.hta
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\info.hta
Signatures
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Phobos
Phobos ransomware appeared at the beginning of 2019.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 4 IoCs
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Deletes backup catalog 3 TTPs 2 IoCs
Uses wbadmin.exe to inhibit system recovery.
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Modifies Windows Firewall 1 TTPs 2 IoCs
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Drops startup file 3 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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Adds Run key to start application 2 TTPs 2 IoCs
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Drops desktop.ini file(s) 64 IoCs
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Drops file in Program Files directory 64 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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Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
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Modifies Internet Explorer settings 1 TTPs 3 IoCs
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious use of AdjustPrivilegeToken 64 IoCs
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Suspicious use of WriteProcessMemory 60 IoCs
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Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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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\V1Fast.bin.exe"C:\Users\Admin\AppData\Local\Temp\V1Fast.bin.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\V1Fast.bin.exe"C:\Users\Admin\AppData\Local\Temp\V1Fast.bin.exe"2⤵
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet3⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete3⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures3⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no3⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet3⤵
- Deletes backup catalog
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh advfirewall set currentprofile state off3⤵
- Modifies Windows Firewall
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C:\Windows\system32\netsh.exenetsh firewall set opmode mode=disable3⤵
- Modifies Windows Firewall
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta"2⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta"2⤵
- Modifies Internet Explorer settings
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\info.hta"2⤵
- Modifies Internet Explorer settings
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet3⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete3⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures3⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no3⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet3⤵
- Deletes backup catalog
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
24.4MB
MD563425398605eab2749069e68225fa064
SHA10e64abf86dac4fc0149bfce38e1a6f53427d48c5
SHA2564eae7e9439cc2b14e94f992427bc786c4db8ef62ca90908d45688707c2ab67c4
SHA512840c4023abca71c7144b948837235cf58cbd23134c756b4776616cafdc1fc96a05a6656798d55eb9b30395903952d4f80d507dfed7d6a1f31cfe64ab9f9da09a
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Filesize
4KB
MD559f3187369ca7b62843f643da33ae548
SHA16cddc6ef3a7b45b7fde6dedada75bce4c7007cef
SHA256d2cf7eacfc0847d673bc34ac567436db80c49bc14872ca4f7d41a7327e117fa3
SHA51217d2e12774b6d0b13bd7932f78ebfa25671c768232f087af8f197c2c125195c6f0cc556963764fd16038e6f8f0b5531ae97afa14ad0cb8ca8f9134ce48c89a7d
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Filesize
4KB
MD559f3187369ca7b62843f643da33ae548
SHA16cddc6ef3a7b45b7fde6dedada75bce4c7007cef
SHA256d2cf7eacfc0847d673bc34ac567436db80c49bc14872ca4f7d41a7327e117fa3
SHA51217d2e12774b6d0b13bd7932f78ebfa25671c768232f087af8f197c2c125195c6f0cc556963764fd16038e6f8f0b5531ae97afa14ad0cb8ca8f9134ce48c89a7d
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Filesize
4KB
MD559f3187369ca7b62843f643da33ae548
SHA16cddc6ef3a7b45b7fde6dedada75bce4c7007cef
SHA256d2cf7eacfc0847d673bc34ac567436db80c49bc14872ca4f7d41a7327e117fa3
SHA51217d2e12774b6d0b13bd7932f78ebfa25671c768232f087af8f197c2c125195c6f0cc556963764fd16038e6f8f0b5531ae97afa14ad0cb8ca8f9134ce48c89a7d
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Filesize
4KB
MD559f3187369ca7b62843f643da33ae548
SHA16cddc6ef3a7b45b7fde6dedada75bce4c7007cef
SHA256d2cf7eacfc0847d673bc34ac567436db80c49bc14872ca4f7d41a7327e117fa3
SHA51217d2e12774b6d0b13bd7932f78ebfa25671c768232f087af8f197c2c125195c6f0cc556963764fd16038e6f8f0b5531ae97afa14ad0cb8ca8f9134ce48c89a7d