Analysis
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max time kernel
151s -
max time network
41s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
01/12/2022, 22:53
Static task
static1
Behavioral task
behavioral1
Sample
b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe
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Size
232KB
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MD5
1de65da587d029b508e3d13274443020
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SHA1
2050cb50780e04e3f46019c72e2b94ee8d3f3df6
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SHA256
b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2
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SHA512
eb8faf9748e08b81cfcfec4787e834747b137ecd4f87f8182bca4fda0c780742c011a3cbb9e7d1fb11a810e0abf9056709be4f410f278549a8ab36747db81e3d
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SSDEEP
6144:WJ43PFKs7STL6eEqxF6snji81RUinKn3Kt+dNFcSU:lPhPDFcB
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" feewud.exe -
Executes dropped EXE 1 IoCs
pid Process 844 feewud.exe -
Loads dropped DLL 2 IoCs
pid Process 1348 b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe 1348 b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /e" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /u" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /c" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /s" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /r" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /l" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /i" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /a" feewud.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /q" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /v" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /n" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /x" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /k" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /b" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /z" feewud.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /f" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /g" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /h" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /w" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /l" b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /p" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /o" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /y" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /t" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /m" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /d" feewud.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\feewud = "C:\\Users\\Admin\\feewud.exe /j" feewud.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1348 b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe 844 feewud.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1348 b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe 844 feewud.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1348 wrote to memory of 844 1348 b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe 26 PID 1348 wrote to memory of 844 1348 b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe 26 PID 1348 wrote to memory of 844 1348 b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe 26 PID 1348 wrote to memory of 844 1348 b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe 26
Processes
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C:\Users\Admin\AppData\Local\Temp\b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe"C:\Users\Admin\AppData\Local\Temp\b1c061fced65b50230eb2a16ad38ef545184dd90ca9c9b668f93db08e8b166f2.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1348 -
C:\Users\Admin\feewud.exe"C:\Users\Admin\feewud.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:844
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
232KB
MD548392b6b61c3bd6be720a436c1861d2a
SHA10e1eeb328591a30930346cb690043068d61aeedc
SHA2563d1a24d0a3295b0fb5686254763f8568ace3aed3dc03c9741cbc97eb8c10b227
SHA512970d9fbb1319761b29a522420808cdfb2163bf5c9f93ede206ed52c1fc71d46ad4154813c526b265750a354f448d9a0c8b460820dfc470d0234e511d62b37f39
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Filesize
232KB
MD548392b6b61c3bd6be720a436c1861d2a
SHA10e1eeb328591a30930346cb690043068d61aeedc
SHA2563d1a24d0a3295b0fb5686254763f8568ace3aed3dc03c9741cbc97eb8c10b227
SHA512970d9fbb1319761b29a522420808cdfb2163bf5c9f93ede206ed52c1fc71d46ad4154813c526b265750a354f448d9a0c8b460820dfc470d0234e511d62b37f39
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Filesize
232KB
MD548392b6b61c3bd6be720a436c1861d2a
SHA10e1eeb328591a30930346cb690043068d61aeedc
SHA2563d1a24d0a3295b0fb5686254763f8568ace3aed3dc03c9741cbc97eb8c10b227
SHA512970d9fbb1319761b29a522420808cdfb2163bf5c9f93ede206ed52c1fc71d46ad4154813c526b265750a354f448d9a0c8b460820dfc470d0234e511d62b37f39
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Filesize
232KB
MD548392b6b61c3bd6be720a436c1861d2a
SHA10e1eeb328591a30930346cb690043068d61aeedc
SHA2563d1a24d0a3295b0fb5686254763f8568ace3aed3dc03c9741cbc97eb8c10b227
SHA512970d9fbb1319761b29a522420808cdfb2163bf5c9f93ede206ed52c1fc71d46ad4154813c526b265750a354f448d9a0c8b460820dfc470d0234e511d62b37f39