Analysis
-
max time kernel
155s -
max time network
159s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
-
submitted
15-04-2024 05:00
General
-
Target
f05df52a73ea28f25d0a85f927f2444a_JaffaCakes118.exe
-
Size
678KB
-
MD5
f05df52a73ea28f25d0a85f927f2444a
-
SHA1
a5c00571f42bad2f17db4d4032b07318abc6f7f1
-
SHA256
1e2335fef46f7320069623fff6702acb41c2877aff5fec83d94a561af37c3c7a
-
SHA512
0b2a3a0bde6fcc23565ccdb1df49727930ad53345f91a3450455d0e8fb431a59af74a169d8c6ae2195afc340d7fde42969638f5d4de5501d1f75737be625e0b2
-
SSDEEP
12288:cPJ4U0TYQivI2qZ7aSgLwkFVpzUvest4ZEbjJLuYJVoM7:JzTYVQ2qZ7aSgLwuVfstRJLHYM
Malware Config
Extracted
\Device\HarddiskVolume1\Boot\Recovery_Instructions.html
http://gvlay6u4g53rxdi5.onion/21-9wA3X0WIwPScg5iK8DAPnytF2A39PT2k-nXcGsE55VeAXETpsoOuMNRQsRevgbSNT
Signatures
-
MedusaLocker
Ransomware with several variants first seen in September 2019.
-
MedusaLocker payload 1 IoCs
-
UAC bypass 3 TTPs 2 IoCs
-
Renames multiple (170) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
Executes dropped EXE 1 IoCs
-
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Checks whether UAC is enabled 1 TTPs 1 IoCs
-
Drops desktop.ini file(s) 1 IoCs
-
Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious behavior: EnumeratesProcesses 64 IoCs
-
Suspicious use of AdjustPrivilegeToken 63 IoCs
-
Suspicious use of WriteProcessMemory 9 IoCs
-
System policy modification 1 TTPs 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\f05df52a73ea28f25d0a85f927f2444a_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\f05df52a73ea28f25d0a85f927f2444a_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
-
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
-
-
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=4340 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:81⤵
-
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
-
Filesize
678KB
MD5f05df52a73ea28f25d0a85f927f2444a
SHA1a5c00571f42bad2f17db4d4032b07318abc6f7f1
SHA2561e2335fef46f7320069623fff6702acb41c2877aff5fec83d94a561af37c3c7a
SHA5120b2a3a0bde6fcc23565ccdb1df49727930ad53345f91a3450455d0e8fb431a59af74a169d8c6ae2195afc340d7fde42969638f5d4de5501d1f75737be625e0b2
-
Filesize
536B
MD52471876c265a52b7569ee2a16b481921
SHA13688d010df5b8db1ffbc7c985b9b9cfeeb856f9d
SHA256c9ab6440af5d699f4a209bc2ca34768dc44fb4a0a5bb8bdc88515c08e68f7ff9
SHA51229c4e7447a66a4971a2ad590017617dbb260e2e4f8e0c78f9f6c7b9cbe6b63a7810c5cf60c66ab4a2660d8145c33386fe1ac832701223864c16da10aec286a8a
-
Filesize
5KB
MD5a26412b671e47462a7e319fe6f997319
SHA133bfc8580e863ac958897a15a7a6cc5bde476482
SHA256f5be868208c0a4932a5b57fe588bd8d0eeb98a478188205828a6ca62e19560b8
SHA5122fb16f2cc817a5bb75d538d34dee8072527df23705cfd258ff0e1997ab85d78421e7d7f875c8d582d7c9fc22959a8484bd84cda0f4e3241b006d37929d6e6846