Analysis
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max time kernel
250s -
max time network
251s -
platform
windows10-1703_x64 -
resource
win10-20230703-en -
resource tags
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submitted
27-07-2023 23:31
General
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Target
1.exe
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Size
235KB
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MD5
0f281d2506515a64082d6e774573afb7
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SHA1
8949f27465913bf475fceb5796b205429083df58
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SHA256
2288a0c896757647538a7dab5e0c980b70b173ed36c9e6206f6701dfd4112cfb
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SHA512
f4ddb22c7dec04ca862d3df88e285025e02c185dbb2c061e9d0092ba3e8e8e083ca55612aae6b2d5792038729c55c0eaf193048991c0b06c8639a52017102622
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SSDEEP
3072:tkq8P0CtmR0TW3gu8/j/ZCTFPBMBbfYjQF5MLyfLTJ1:GPJTOgr/0XgjYY5gULT
Malware Config
Extracted
C:\info.hta
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\users\public\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 (461) 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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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\1.exe"C:\Users\Admin\AppData\Local\Temp\1.exe"1⤵
- 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\1.exe"C:\Users\Admin\AppData\Local\Temp\1.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
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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" {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)
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C:\Windows\SysWOW64\werfault.exewerfault.exe /h /shared Global\253c1afd65f24389a19809b4e10ba3a8 /t 2372 /p 6521⤵
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
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Downloads
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Filesize
3.2MB
MD5c6ab9543e92e7fae15a28b3d76ad73e6
SHA16fad66bad02372bd43a779af41f6123ccbbaf77d
SHA256152b482e140759d4b22206f575543add4bc954e50ab8ce0194b11764689b1035
SHA512595f6db73ca1b784165879857805b2e868ad4c6ba5cea1b5f7975a5ceec09162dd51422405e56907d78593242347b0cfcd24dcb0f952f581e512c44716d52c97
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Filesize
5KB
MD5253255c251f1cee77be4daa292b0abe8
SHA1cdabd107542bf4f6c906e3dbd0db96967754c55e
SHA256c491828fb855f2bd08fc0207b143350a497918d1e517c3261357dc03d0207390
SHA51231ac9be2642f55958f0e9eedb1c64060528091e70d2ec72a8eb7237259c4223a9360c8df5dc2397a17675cc20c154e933a826d96938cd29184cccf69f15ab65f
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Filesize
5KB
MD5253255c251f1cee77be4daa292b0abe8
SHA1cdabd107542bf4f6c906e3dbd0db96967754c55e
SHA256c491828fb855f2bd08fc0207b143350a497918d1e517c3261357dc03d0207390
SHA51231ac9be2642f55958f0e9eedb1c64060528091e70d2ec72a8eb7237259c4223a9360c8df5dc2397a17675cc20c154e933a826d96938cd29184cccf69f15ab65f
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Filesize
5KB
MD5253255c251f1cee77be4daa292b0abe8
SHA1cdabd107542bf4f6c906e3dbd0db96967754c55e
SHA256c491828fb855f2bd08fc0207b143350a497918d1e517c3261357dc03d0207390
SHA51231ac9be2642f55958f0e9eedb1c64060528091e70d2ec72a8eb7237259c4223a9360c8df5dc2397a17675cc20c154e933a826d96938cd29184cccf69f15ab65f
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Filesize
5KB
MD5253255c251f1cee77be4daa292b0abe8
SHA1cdabd107542bf4f6c906e3dbd0db96967754c55e
SHA256c491828fb855f2bd08fc0207b143350a497918d1e517c3261357dc03d0207390
SHA51231ac9be2642f55958f0e9eedb1c64060528091e70d2ec72a8eb7237259c4223a9360c8df5dc2397a17675cc20c154e933a826d96938cd29184cccf69f15ab65f
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Filesize
5KB
MD5253255c251f1cee77be4daa292b0abe8
SHA1cdabd107542bf4f6c906e3dbd0db96967754c55e
SHA256c491828fb855f2bd08fc0207b143350a497918d1e517c3261357dc03d0207390
SHA51231ac9be2642f55958f0e9eedb1c64060528091e70d2ec72a8eb7237259c4223a9360c8df5dc2397a17675cc20c154e933a826d96938cd29184cccf69f15ab65f
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Filesize
2.6MB
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Filesize
1024KB
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Filesize
2.6MB
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Filesize
2.6MB
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Filesize
2.6MB
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Filesize
2.6MB
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Filesize
1024KB
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Filesize
2.6MB
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Filesize
60KB
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Filesize
2.6MB
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Filesize
60KB
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Filesize
2.6MB
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Filesize
1024KB