Analysis
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max time kernel
119s -
max time network
123s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
19-12-2021 08:49
Static task
static1
Behavioral task
behavioral1
Sample
5b5540baed04e453ae72ca2fc74b2a6b.exe
Resource
win7-en-20211208
General
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Target
5b5540baed04e453ae72ca2fc74b2a6b.exe
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Size
373KB
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MD5
5b5540baed04e453ae72ca2fc74b2a6b
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SHA1
d93e8a383780308c73ebb639024b2029f64d72a1
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SHA256
d7e055feae0f43ff14859faafa33113ceba3977171497635576fd74608a64a7f
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SHA512
bafcc00a56e69d1c81d966c0ea0d276ae0a63bcd8b06584c5eee5caf3d4321a0926b1cb2e593b47ef2d55e6728ecf3377fb37cc2130cdd1b182d709e08ec67f1
Malware Config
Extracted
cryptbot
sezfva72.top
morbaf07.top
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payload_url
http://ekuniv18.top/download.php?file=impish.exe
Signatures
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Deletes itself 1 IoCs
Processes:
cmd.exepid process 656 cmd.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
5b5540baed04e453ae72ca2fc74b2a6b.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 5b5540baed04e453ae72ca2fc74b2a6b.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 5b5540baed04e453ae72ca2fc74b2a6b.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1228 timeout.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
5b5540baed04e453ae72ca2fc74b2a6b.execmd.exedescription pid process target process PID 612 wrote to memory of 656 612 5b5540baed04e453ae72ca2fc74b2a6b.exe cmd.exe PID 612 wrote to memory of 656 612 5b5540baed04e453ae72ca2fc74b2a6b.exe cmd.exe PID 612 wrote to memory of 656 612 5b5540baed04e453ae72ca2fc74b2a6b.exe cmd.exe PID 612 wrote to memory of 656 612 5b5540baed04e453ae72ca2fc74b2a6b.exe cmd.exe PID 656 wrote to memory of 1228 656 cmd.exe timeout.exe PID 656 wrote to memory of 1228 656 cmd.exe timeout.exe PID 656 wrote to memory of 1228 656 cmd.exe timeout.exe PID 656 wrote to memory of 1228 656 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\5b5540baed04e453ae72ca2fc74b2a6b.exe"C:\Users\Admin\AppData\Local\Temp\5b5540baed04e453ae72ca2fc74b2a6b.exe"1⤵
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\oMJxMDciMNOk & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5b5540baed04e453ae72ca2fc74b2a6b.exe"2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 43⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/612-54-0x000000000026B000-0x0000000000291000-memory.dmpFilesize
152KB
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memory/612-55-0x0000000075891000-0x0000000075893000-memory.dmpFilesize
8KB
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memory/612-56-0x0000000001C10000-0x0000000001C55000-memory.dmpFilesize
276KB
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memory/612-57-0x0000000000400000-0x00000000004DE000-memory.dmpFilesize
888KB
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memory/656-58-0x0000000000000000-mapping.dmp
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memory/1228-59-0x0000000000000000-mapping.dmp