Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
07-02-2023 06:56
Static task
static1
Behavioral task
behavioral1
Sample
a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe
Resource
win10v2004-20220812-en
General
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Target
a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe
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Size
4.7MB
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MD5
26492126b5790d0c2a2cb43b427b9ef1
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SHA1
34c916130a22cfb916ff2aca642014160bb1e17a
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SHA256
a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615
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SHA512
9596d59dcd2b59ddfd3d3a090bc97ea0baa5cb82508aaa462a4cf719bace65c290ce7ec420b4dda498a72366d457ded52c8dd5e1dd3b3700b6be70353cfb22dd
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SSDEEP
98304:tHrhmizRHXVbI95+BEKCepBtEvZcAiPj6eGs:eizRl03+tBtERcAG6i
Malware Config
Signatures
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PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
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Loads dropped DLL 10 IoCs
Processes:
vbc.exepid process 3796 vbc.exe 3796 vbc.exe 3796 vbc.exe 3796 vbc.exe 3796 vbc.exe 3796 vbc.exe 3796 vbc.exe 3796 vbc.exe 3796 vbc.exe 3796 vbc.exe -
Uses the VBS compiler for execution 1 TTPs
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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 6 ipinfo.io 7 ipinfo.io -
Suspicious use of SetThreadContext 1 IoCs
Processes:
a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exedescription pid process target process PID 5012 set thread context of 3796 5012 a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe vbc.exe -
Program crash 2 IoCs
Processes:
WerFault.exeWerFault.exepid pid_target process target process 4948 5012 WerFault.exe a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe 1460 3796 WerFault.exe vbc.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
vbc.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 vbc.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString vbc.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
vbc.exepid process 3796 vbc.exe 3796 vbc.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exedescription pid process target process PID 5012 wrote to memory of 3796 5012 a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe vbc.exe PID 5012 wrote to memory of 3796 5012 a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe vbc.exe PID 5012 wrote to memory of 3796 5012 a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe vbc.exe PID 5012 wrote to memory of 3796 5012 a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe vbc.exe PID 5012 wrote to memory of 3796 5012 a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe"C:\Users\Admin\AppData\Local\Temp\a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3796 -s 14123⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5012 -s 1962⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5012 -ip 50121⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3796 -ip 37961⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\freebl3.dllFilesize
326KB
MD5ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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C:\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\freebl3.dllFilesize
326KB
MD5ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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C:\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\freebl3.dllFilesize
326KB
MD5ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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C:\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\freebl3.dllFilesize
326KB
MD5ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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C:\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\freebl3.dllFilesize
326KB
MD5ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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C:\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\freebl3.dllFilesize
326KB
MD5ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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C:\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\mozglue.dllFilesize
133KB
MD58f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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C:\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\nss3.dllFilesize
1.2MB
MD5bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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C:\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\softokn3.dllFilesize
141KB
MD5a2ee53de9167bf0d6c019303b7ca84e5
SHA12a3c737fa1157e8483815e98b666408a18c0db42
SHA25643536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083
SHA51245b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8
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C:\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\softokn3.dllFilesize
141KB
MD5a2ee53de9167bf0d6c019303b7ca84e5
SHA12a3c737fa1157e8483815e98b666408a18c0db42
SHA25643536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083
SHA51245b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8
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memory/3796-140-0x0000000001050000-0x00000000013CD000-memory.dmpFilesize
3.5MB
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memory/3796-133-0x0000000001050000-0x00000000013CD000-memory.dmpFilesize
3.5MB
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memory/3796-132-0x0000000000000000-mapping.dmp