Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
16-10-2024 20:53
General
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Target
4ef811b784b985769645e03bc0b9cd24_JaffaCakes118.exe
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Size
669KB
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MD5
4ef811b784b985769645e03bc0b9cd24
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SHA1
2e04a37b215dd2a95694b1c18dbe1dd35be5aa9f
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SHA256
4f9a833e79092006c06203a66b41fc9250bcebcee148fea404db75d52035131c
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SHA512
34e9a5a015b04ae904b50a0b2e466788db16d7eb43769fec156cab830932032174b3a43a206016332f99eb16571225dc1a0a0042ce2bca67de1821bbc08c039c
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SSDEEP
12288:dQA0FfTcwpBuV2UxqDmuiLZeUaoFi2XZWfGe615HhAZV8DBKD/KeX:Tuf4wTuV2Ux3uIZeUBi2Te6HWUKrKe
Malware Config
Extracted
\Device\HarddiskVolume1\HOW_TO_RECOVER_DATA.html
Signatures
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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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UAC bypass 3 TTPs 2 IoCs
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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 1 IoCs
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Reads user/profile data of web browsers 3 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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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 5 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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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious use of AdjustPrivilegeToken 63 IoCs
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Suspicious use of WriteProcessMemory 9 IoCs
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System policy modification 1 TTPs 3 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\4ef811b784b985769645e03bc0b9cd24_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\4ef811b784b985769645e03bc0b9cd24_JaffaCakes118.exe"1⤵
- UAC bypass
- 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 /nointeractive2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
2Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
669KB
MD54ef811b784b985769645e03bc0b9cd24
SHA12e04a37b215dd2a95694b1c18dbe1dd35be5aa9f
SHA2564f9a833e79092006c06203a66b41fc9250bcebcee148fea404db75d52035131c
SHA51234e9a5a015b04ae904b50a0b2e466788db16d7eb43769fec156cab830932032174b3a43a206016332f99eb16571225dc1a0a0042ce2bca67de1821bbc08c039c
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Filesize
536B
MD52c85d4b8fdae9c4ab1cbe3faa78c2d31
SHA1ca8cdc36ad922559cb605130fc066adee7b7eb6e
SHA256e5cd9290ee7d7bdbb897dcd8a30cb490e6510c03aa037c344d0826743031fc17
SHA51272a0cd325de60e748d54fab24ea7bc3a17626d2ec5de2c8a5dae2351625b61b194bac8db3c3765383d7699bea5db85c2af8a3be3de7dce4cb0fb38e65cb45df5
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Filesize
5KB
MD5e670716909aaaa2e1d1a59cd42575d4f
SHA1df517edc5a622e0b850f583ab278bf3468b6a122
SHA25605a226dca57cb726470a147b7be023c0cf26966b2bd535c04f47d539da26336c
SHA51207e7d6a79772d4f15bced0ea936c3e201e5f89a4e8510c4f55c425f84638647736884da12b66d062b9545afac08894fccb45131b841e13afe8a056ba1946de4a