Analysis
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max time kernel
145s -
max time network
281s -
platform
windows10-1703_x64 -
resource
win10-20220812-en -
resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system -
submitted
09/01/2023, 22:17
Static task
static1
Behavioral task
behavioral1
Sample
6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe
Resource
win10-20220812-en
General
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Target
6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe
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Size
1.0MB
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MD5
067b0d35578c2755a06e9e6b702c4c05
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SHA1
603edd059b6a616a984ba4582cd86384234ba2d0
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SHA256
6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef
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SHA512
992617a6220a41fde70e3e457b27a1b7474af44d23d501474c8e466e4648ea1a281b277f667434f097dc1808d3299a7b18076e16a924e15aa29319a8f0ff0595
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SSDEEP
12288:u9iJB1C4k6XXEdR16EjdL7in0DpEXhZV8F9jL2FvEd/0rhFyYcvFb+BCFhyP8+:uoJuFfHjpsZVAv/0ruYctb+YFQ
Malware Config
Signatures
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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" InstallUtil.exe -
Executes dropped EXE 1 IoCs
pid Process 4996 kernel32.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Windows\CurrentVersion\Run 6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe Set value (str) \REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Windows\CurrentVersion\Run\Baskov = "C:\\Users\\Admin\\Baskov\\kernel32.exe" 6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 7 eth0.me -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4996 set thread context of 5088 4996 kernel32.exe 73 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Runs ping.exe 1 TTPs 1 IoCs
pid Process 4092 PING.EXE -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 5088 InstallUtil.exe -
Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 3512 wrote to memory of 4996 3512 6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe 67 PID 3512 wrote to memory of 4996 3512 6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe 67 PID 3512 wrote to memory of 4996 3512 6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe 67 PID 3512 wrote to memory of 4100 3512 6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe 68 PID 3512 wrote to memory of 4100 3512 6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe 68 PID 3512 wrote to memory of 4100 3512 6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe 68 PID 4100 wrote to memory of 1484 4100 cmd.exe 71 PID 4100 wrote to memory of 1484 4100 cmd.exe 71 PID 4100 wrote to memory of 1484 4100 cmd.exe 71 PID 4100 wrote to memory of 4092 4100 cmd.exe 72 PID 4100 wrote to memory of 4092 4100 cmd.exe 72 PID 4100 wrote to memory of 4092 4100 cmd.exe 72 PID 4996 wrote to memory of 5088 4996 kernel32.exe 73 PID 4996 wrote to memory of 5088 4996 kernel32.exe 73 PID 4996 wrote to memory of 5088 4996 kernel32.exe 73 PID 4996 wrote to memory of 5088 4996 kernel32.exe 73 PID 4996 wrote to memory of 5088 4996 kernel32.exe 73
Processes
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C:\Users\Admin\AppData\Local\Temp\6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe"C:\Users\Admin\AppData\Local\Temp\6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3512 -
C:\Users\Admin\Baskov\kernel32.exe"C:\Users\Admin\Baskov\kernel32.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4996 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"3⤵
- UAC bypass
- Suspicious use of AdjustPrivilegeToken
PID:5088
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c chcp 65001 && ping 127.0.0.1 && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\6af2204e4e62a5d44462335379f8e70f7d680da84f2a7f6c328fbd40014694ef.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:4100 -
C:\Windows\SysWOW64\chcp.comchcp 650013⤵PID:1484
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C:\Windows\SysWOW64\PING.EXEping 127.0.0.13⤵
- Runs ping.exe
PID:4092
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
651.0MB
MD546f42ebca6a23b350e110f1354c3e88d
SHA1c0744e11fbc29bc33e0b10d205906a55373cd8e4
SHA25610ba34275255db10bafb3384c6559043cd0b811a6cd4c9d56754f0d3141c50ca
SHA5126fabfea0b635b54f3f2130389ecdb0e7dc785d262b697f9fd7818f4137ca081b6c66fa207889408879ed0e857316000714988ca4c4edf19af2f6d87a364d8262
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Filesize
651.0MB
MD546f42ebca6a23b350e110f1354c3e88d
SHA1c0744e11fbc29bc33e0b10d205906a55373cd8e4
SHA25610ba34275255db10bafb3384c6559043cd0b811a6cd4c9d56754f0d3141c50ca
SHA5126fabfea0b635b54f3f2130389ecdb0e7dc785d262b697f9fd7818f4137ca081b6c66fa207889408879ed0e857316000714988ca4c4edf19af2f6d87a364d8262