Analysis
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max time kernel
151s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
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submitted
18-04-2024 19:59
General
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Target
f8a9d3f458a7ab3af54cde87d2b0b4f6_JaffaCakes118.exe
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Size
669KB
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MD5
f8a9d3f458a7ab3af54cde87d2b0b4f6
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SHA1
9984cfbbf8c86c16d0ca2fd1388ed516213a6eb8
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SHA256
45f0bb5539b7ce29c74f11c46b1f1199eae518af04ff7bb499e10f4780dc7530
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SHA512
324b73a4fb223d653fb56f3d0081fdd4429ca222c43069141f6df4e53538b2dd25c0f25fad14d8c96e0bbbb5b9a7de6fc93b96695315a777aa5c065035b49dff
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SSDEEP
12288:dQA0FfTcwpBuV2UxqDmuiLZeUaoFi2XZWfGe615HhAZV8DYKD/KeX:Tuf4wTuV2Ux3uIZeUBi2Te6HWRKrKe
Malware Config
Extracted
\Device\HarddiskVolume1\Boot\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 (229) 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 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 23 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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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\f8a9d3f458a7ab3af54cde87d2b0b4f6_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\f8a9d3f458a7ab3af54cde87d2b0b4f6_JaffaCakes118.exe"1⤵
- UAC bypass
- Checks whether UAC is enabled
- Drops desktop.ini file(s)
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- 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 --no-appcompat-clear --mojo-platform-channel-handle=3756 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:81⤵
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C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe1⤵
- Executes dropped EXE
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
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
669KB
MD5f8a9d3f458a7ab3af54cde87d2b0b4f6
SHA19984cfbbf8c86c16d0ca2fd1388ed516213a6eb8
SHA25645f0bb5539b7ce29c74f11c46b1f1199eae518af04ff7bb499e10f4780dc7530
SHA512324b73a4fb223d653fb56f3d0081fdd4429ca222c43069141f6df4e53538b2dd25c0f25fad14d8c96e0bbbb5b9a7de6fc93b96695315a777aa5c065035b49dff
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Filesize
536B
MD5b33ef1b9c905606cb769cf02e0e725f9
SHA1c03d62c722d1e9d9734ac3e22e2dafe80ceb8a23
SHA256b05c39930dcbfa1eb34263ca7ed4ba003654d73fefdc40c7d12f678a87f045f9
SHA512871d35dae73bf26c71ddc06c97ebb212e177dafb62c735d9ff5f8ad7bdbeb4e62095d29a7435747347566826adc1d3827f6a6d55424ad506304d44e2f63bf644
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Filesize
5KB
MD5d5cf2675c16e901b4780fd6b2ae25d69
SHA1c5e9af0807e9a0c556e20248ae0c7a320b3c00ff
SHA2563f75074c90f8da60555c54ecc1542dd985aefa3e42c90201d8c384305499b8c2
SHA51257fea8f55d78aa8653fec4d89f2ef68b68908357ec27ba486c60c96f73e18b60ffebe46573b1f37f2b6f9df48365e319234f648868dc0a05ad72b4f337fdb7a8