Overview
overview
8Static
static
edu/lingui....class
windows7-x64
3edu/lingui....class
windows10-2004-x64
3edu/lingui....class
windows7-x64
3edu/lingui....class
windows10-2004-x64
3edu/lingui....class
windows7-x64
3edu/lingui....class
windows10-2004-x64
3edu/lingui....class
windows7-x64
3edu/lingui....class
windows10-2004-x64
3resources/chat.exe
windows7-x64
8resources/chat.exe
windows10-2004-x64
8Analysis
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max time kernel
205s -
max time network
69s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
05/12/2022, 10:15
Static task
static1
Behavioral task
behavioral1
Sample
edu/linguistics/vocab/OnlineHelp.class
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
edu/linguistics/vocab/OnlineHelp.class
Resource
win10v2004-20220812-en
Behavioral task
behavioral3
Sample
edu/linguistics/vocab/ProcessTimer$StudyThread.class
Resource
win7-20220901-en
Behavioral task
behavioral4
Sample
edu/linguistics/vocab/ProcessTimer$StudyThread.class
Resource
win10v2004-20220812-en
Behavioral task
behavioral5
Sample
edu/linguistics/vocab/ProcessTimer.class
Resource
win7-20221111-en
Behavioral task
behavioral6
Sample
edu/linguistics/vocab/ProcessTimer.class
Resource
win10v2004-20220901-en
Behavioral task
behavioral7
Sample
edu/linguistics/vocab/Vocab.class
Resource
win7-20221111-en
Behavioral task
behavioral8
Sample
edu/linguistics/vocab/Vocab.class
Resource
win10v2004-20220901-en
Behavioral task
behavioral9
Sample
resources/chat.exe
Resource
win7-20220812-en
Behavioral task
behavioral10
Sample
resources/chat.exe
Resource
win10v2004-20221111-en
General
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Target
edu/linguistics/vocab/Vocab.class
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Size
2KB
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MD5
5ce801a7e466e6dce5b0f2b1344e4a62
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SHA1
7bcff601d5cd3d04eff224fd730958c994613245
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SHA256
b82b71047857c235410c71ee1be80d9cf3dee66ffe2133e6f18ca77a2ba9a36c
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SHA512
c8b20018ede5b77e2368c40cf2cb9fe9e62ad6140afcf8a1bb3b37a690e14f2c3ccf3e1b05217774d495015c5597aedffdabb81a5380c9e4594f51159818f723
Malware Config
Signatures
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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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Modifies registry class 10 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\class_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\"" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\.class rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\.class\ = "class_auto_file" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\class_auto_file\shell\Read rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\class_auto_file\shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\class_auto_file\shell\Read\command rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\class_auto_file rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\class_auto_file\ rundll32.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1280 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 1280 AcroRd32.exe 1280 AcroRd32.exe 1280 AcroRd32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 516 wrote to memory of 1316 516 cmd.exe 29 PID 516 wrote to memory of 1316 516 cmd.exe 29 PID 516 wrote to memory of 1316 516 cmd.exe 29 PID 1316 wrote to memory of 1280 1316 rundll32.exe 30 PID 1316 wrote to memory of 1280 1316 rundll32.exe 30 PID 1316 wrote to memory of 1280 1316 rundll32.exe 30 PID 1316 wrote to memory of 1280 1316 rundll32.exe 30
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\edu\linguistics\vocab\Vocab.class1⤵
- Suspicious use of WriteProcessMemory
PID:516 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\edu\linguistics\vocab\Vocab.class2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1316 -
C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\edu\linguistics\vocab\Vocab.class"3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:1280
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