Analysis
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max time kernel
39s -
max time network
47s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
19/10/2022, 23:04
Static task
static1
Behavioral task
behavioral1
Sample
40b4a6dffe7bec3c9348a787f1f6477cae1cc17bac77b651ad51d3c88708f136.dll
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
40b4a6dffe7bec3c9348a787f1f6477cae1cc17bac77b651ad51d3c88708f136.dll
Resource
win10v2004-20220901-en
General
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Target
40b4a6dffe7bec3c9348a787f1f6477cae1cc17bac77b651ad51d3c88708f136.dll
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Size
36KB
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MD5
9233738067b2c00e39cfd229ae2488e2
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SHA1
3805faa38fb55216d0e69f35cc760dafe6fcea0a
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SHA256
40b4a6dffe7bec3c9348a787f1f6477cae1cc17bac77b651ad51d3c88708f136
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SHA512
e6b668ada0a4ff407f97ac249aef47613761cc59251e9bc8075eda250d116cc61d1dd881a5685d9f27ea9b56890b3eae5b7c48647e53fd626c0a024e25c39dcd
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SSDEEP
384:angz/RdiJscccVWSRuLBN9wSrli/xQfbfz1pvwMM58zUP:amziJs2uLhwSrluKT711jMW4
Malware Config
Signatures
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Modifies AppInit DLL entries 2 TTPs
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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 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "regedit.exe /s \"%1\"" rundll32.exe -
Runs .reg file with regedit 1 IoCs
pid Process 1712 regedit.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1376 rundll32.exe 1376 rundll32.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1492 wrote to memory of 1376 1492 rundll32.exe 28 PID 1492 wrote to memory of 1376 1492 rundll32.exe 28 PID 1492 wrote to memory of 1376 1492 rundll32.exe 28 PID 1492 wrote to memory of 1376 1492 rundll32.exe 28 PID 1492 wrote to memory of 1376 1492 rundll32.exe 28 PID 1492 wrote to memory of 1376 1492 rundll32.exe 28 PID 1492 wrote to memory of 1376 1492 rundll32.exe 28 PID 1376 wrote to memory of 900 1376 rundll32.exe 29 PID 1376 wrote to memory of 900 1376 rundll32.exe 29 PID 1376 wrote to memory of 900 1376 rundll32.exe 29 PID 1376 wrote to memory of 900 1376 rundll32.exe 29 PID 900 wrote to memory of 1712 900 cmd.exe 31 PID 900 wrote to memory of 1712 900 cmd.exe 31 PID 900 wrote to memory of 1712 900 cmd.exe 31 PID 900 wrote to memory of 1712 900 cmd.exe 31
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\40b4a6dffe7bec3c9348a787f1f6477cae1cc17bac77b651ad51d3c88708f136.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1492 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\40b4a6dffe7bec3c9348a787f1f6477cae1cc17bac77b651ad51d3c88708f136.dll,#12⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1376 -
C:\Windows\SysWOW64\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\a.reg3⤵
- Suspicious use of WriteProcessMemory
PID:900 -
C:\Windows\SysWOW64\regedit.exe"regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"4⤵
- Runs .reg file with regedit
PID:1712
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
152B
MD5b100f5324ef74ded0b998e64d07a2e19
SHA140b0d7f51bf2dd8451f1b723d21355c471a5fa46
SHA2563db613d24a75ae220891698c055e1c580a42e58564f568a0510db87581cc2042
SHA512c12391bb37c334074f7d7e1257b6364fd5cbce848e0a8fe15b8326f54fd9568fe3baec58618c4334027a774a06a08ec249cb71db925c1f85feee6a3d3a816c04