Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231020-en -
resource tags
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submitted
03-11-2023 18:24
General
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Target
NEAS.c29630324d768c6e40b814164f6c2c6f33dd741392edc940cc852e67e1667a57exe_JC.exe
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Size
56KB
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MD5
c0edb05bd1e26666764757e7d6f6f09b
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SHA1
330139df4594f4070ada6c89ec3d0a16abe14497
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SHA256
c29630324d768c6e40b814164f6c2c6f33dd741392edc940cc852e67e1667a57
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SHA512
f172c38d5d169523c56d5c551749c9b8bf6d1452b0c64666651757f46546ffe8bd445935b88faf16dc381a13a6b12a71934fef6c9fa434ee5974d0d3499d1790
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SSDEEP
1536:gNeRBl5PT/rx1mzwRMSTdLpJ3obxhYPQg:gQRrmzwR5JfPQ
Malware Config
Extracted
C:\info.hta
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\Users\Admin\Desktop\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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Renames multiple (456) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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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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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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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).
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Checks SCSI registry key(s) 3 TTPs 4 IoCs
SCSI information is often read in order to detect sandboxing environments.
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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 registry class 1 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 42 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\NEAS.c29630324d768c6e40b814164f6c2c6f33dd741392edc940cc852e67e1667a57exe_JC.exe"C:\Users\Admin\AppData\Local\Temp\NEAS.c29630324d768c6e40b814164f6c2c6f33dd741392edc940cc852e67e1667a57exe_JC.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\NEAS.c29630324d768c6e40b814164f6c2c6f33dd741392edc940cc852e67e1667a57exe_JC.exe"C:\Users\Admin\AppData\Local\Temp\NEAS.c29630324d768c6e40b814164f6c2c6f33dd741392edc940cc852e67e1667a57exe_JC.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\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\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\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}2⤵
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}2⤵
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}2⤵
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "F:\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}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
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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⤵
- Checks SCSI registry key(s)
Network
MITRE ATT&CK Matrix ATT&CK v13
Persistence
Create or Modify System Process
1Windows Service
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Privilege Escalation
Create or Modify System Process
1Windows Service
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems64.dll.id[1792C2BE-2939].[[email protected]].faustFilesize
3.2MB
MD5c466dbc28a18525edfede0a23e5615aa
SHA1efac6bd9df4a08d25d95b4a00d32f426ce45df8b
SHA25679df68766181736f01e2843a7254ecc4755f2235791472ff8b858b3a6d815e79
SHA512b4aaa035d7cb624a38a3ad7cc2da82778b8f14e0c6c7b324840436f1ddc63b358e05d321a04e3a53725664476bf77b46fc6fe162f41942c1a3a10845d9faae94
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C:\Users\Admin\Desktop\info.htaFilesize
5KB
MD5037db5b39d4bb417e6e7fd035848825d
SHA1b5a30005521ef4dab1ca7ca15de3c8ef0de19ee9
SHA256ea7951cc34d6cb0b8aaeea55719db9bb287516510dea67dbb144257e3abbc5b8
SHA512ae810414b9220fe9f15a04586dc5e451cfbd0ed6a711a836758bf2c1d07087f79065aac9c2df29b24a4c2755e02a2fa641d927a18a83d55b639918c60773e730
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C:\info.htaFilesize
5KB
MD5037db5b39d4bb417e6e7fd035848825d
SHA1b5a30005521ef4dab1ca7ca15de3c8ef0de19ee9
SHA256ea7951cc34d6cb0b8aaeea55719db9bb287516510dea67dbb144257e3abbc5b8
SHA512ae810414b9220fe9f15a04586dc5e451cfbd0ed6a711a836758bf2c1d07087f79065aac9c2df29b24a4c2755e02a2fa641d927a18a83d55b639918c60773e730
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C:\info.htaFilesize
5KB
MD5037db5b39d4bb417e6e7fd035848825d
SHA1b5a30005521ef4dab1ca7ca15de3c8ef0de19ee9
SHA256ea7951cc34d6cb0b8aaeea55719db9bb287516510dea67dbb144257e3abbc5b8
SHA512ae810414b9220fe9f15a04586dc5e451cfbd0ed6a711a836758bf2c1d07087f79065aac9c2df29b24a4c2755e02a2fa641d927a18a83d55b639918c60773e730
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C:\users\public\desktop\info.htaFilesize
5KB
MD5037db5b39d4bb417e6e7fd035848825d
SHA1b5a30005521ef4dab1ca7ca15de3c8ef0de19ee9
SHA256ea7951cc34d6cb0b8aaeea55719db9bb287516510dea67dbb144257e3abbc5b8
SHA512ae810414b9220fe9f15a04586dc5e451cfbd0ed6a711a836758bf2c1d07087f79065aac9c2df29b24a4c2755e02a2fa641d927a18a83d55b639918c60773e730
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F:\info.htaFilesize
5KB
MD5037db5b39d4bb417e6e7fd035848825d
SHA1b5a30005521ef4dab1ca7ca15de3c8ef0de19ee9
SHA256ea7951cc34d6cb0b8aaeea55719db9bb287516510dea67dbb144257e3abbc5b8
SHA512ae810414b9220fe9f15a04586dc5e451cfbd0ed6a711a836758bf2c1d07087f79065aac9c2df29b24a4c2755e02a2fa641d927a18a83d55b639918c60773e730