Analysis
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max time kernel
136s -
max time network
129s -
platform
windows10_x64 -
resource
win10v200430 -
submitted
07-05-2020 13:29
Static task
static1
Behavioral task
behavioral1
Sample
buer.exe
Resource
win7v200430
Behavioral task
behavioral2
Sample
buer.exe
Resource
win10v200430
General
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Target
buer.exe
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Size
111KB
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MD5
f884618092b55e3edc48096757aab143
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SHA1
0c0ad1301fc561699dba22cc779decc0df5570a1
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SHA256
6728db086194c2fa6a8e17e7b13bac1f5329b501e6f93b3587416895d387d343
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SHA512
195f4995907e34867d72778fb7e5857ea16e802376cf7ef17e2af3afa64e929bacfed4ed1b60d71a1ad8ea29e47c795c97ee7e41b6a02db59c9cc68fbb32e6ad
Malware Config
Signatures
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Loads dropped DLL 1 IoCs
Processes:
buer.exepid process 3848 buer.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
buer.exedescription pid process target process PID 3848 set thread context of 1524 3848 buer.exe buer.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
buer.exepid process 3848 buer.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
buer.exedescription pid process target process PID 3848 wrote to memory of 1524 3848 buer.exe buer.exe PID 3848 wrote to memory of 1524 3848 buer.exe buer.exe PID 3848 wrote to memory of 1524 3848 buer.exe buer.exe PID 3848 wrote to memory of 1524 3848 buer.exe buer.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\buer.exe"C:\Users\Admin\AppData\Local\Temp\buer.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3848 -
C:\Users\Admin\AppData\Local\Temp\buer.exe"C:\Users\Admin\AppData\Local\Temp\buer.exe"2⤵PID:1524
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
0063d48afe5a0cdc02833145667b6641
SHA1e7eb614805d183ecb1127c62decb1a6be1b4f7a8
SHA256ac9dfe3b35ea4b8932536ed7406c29a432976b685cc5322f94ef93df920fede7
SHA51271cbbcaeb345e09306e368717ea0503fe8df485be2e95200febc61bcd8ba74fb4211cd263c232f148c0123f6c6f2e3fd4ea20bdecc4070f5208c35c6920240f0