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220217-jxx5ascaan 1Analysis
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max time kernel
64s -
max time network
22s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
17-02-2022 18:50
Static task
static1
Behavioral task
behavioral1
Sample
important.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
important.exe
Resource
win10-en-20211208
Behavioral task
behavioral3
Sample
important.exe
Resource
win10v2004-en-20220112
Behavioral task
behavioral4
Sample
important.exe
Resource
win11
General
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Target
important.exe
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Size
3.4MB
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MD5
84c82835a5d21bbcf75a61706d8ab549
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SHA1
5ff465afaabcbf0150d1a3ab2c2e74f3a4426467
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SHA256
ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa
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SHA512
90723a50c20ba3643d625595fd6be8dcf88d70ff7f4b4719a88f055d5b3149a4231018ea30d375171507a147e59f73478c0c27948590794554d031e7d54b7244
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\@[email protected]
wannacry
12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Executes dropped EXE 1 IoCs
pid Process 1072 taskdl.exe -
Drops startup file 1 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD16F8.tmp important.exe -
Loads dropped DLL 3 IoCs
pid Process 956 important.exe 956 important.exe 1572 cscript.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1600 icacls.exe -
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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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 956 wrote to memory of 748 956 important.exe 28 PID 956 wrote to memory of 748 956 important.exe 28 PID 956 wrote to memory of 748 956 important.exe 28 PID 956 wrote to memory of 748 956 important.exe 28 PID 956 wrote to memory of 1600 956 important.exe 30 PID 956 wrote to memory of 1600 956 important.exe 30 PID 956 wrote to memory of 1600 956 important.exe 30 PID 956 wrote to memory of 1600 956 important.exe 30 PID 956 wrote to memory of 1072 956 important.exe 32 PID 956 wrote to memory of 1072 956 important.exe 32 PID 956 wrote to memory of 1072 956 important.exe 32 PID 956 wrote to memory of 1072 956 important.exe 32 PID 956 wrote to memory of 296 956 important.exe 33 PID 956 wrote to memory of 296 956 important.exe 33 PID 956 wrote to memory of 296 956 important.exe 33 PID 956 wrote to memory of 296 956 important.exe 33 PID 296 wrote to memory of 1572 296 cmd.exe 36 PID 296 wrote to memory of 1572 296 cmd.exe 36 PID 296 wrote to memory of 1572 296 cmd.exe 36 PID 296 wrote to memory of 1572 296 cmd.exe 36 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 748 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\important.exe"C:\Users\Admin\AppData\Local\Temp\important.exe"1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:956 -
C:\Windows\SysWOW64\attrib.exeattrib +h .2⤵
- Views/modifies file attributes
PID:748
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C:\Windows\SysWOW64\icacls.exeicacls . /grant Everyone:F /T /C /Q2⤵
- Modifies file permissions
PID:1600
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C:\Users\Admin\AppData\Local\Temp\taskdl.exetaskdl.exe2⤵
- Executes dropped EXE
PID:1072
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C:\Windows\SysWOW64\cmd.execmd /c 50341645127545.bat2⤵
- Suspicious use of WriteProcessMemory
PID:296 -
C:\Windows\SysWOW64\cscript.execscript.exe //nologo m.vbs3⤵
- Loads dropped DLL
PID:1572
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"1⤵PID:1520