Analysis
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max time kernel
87s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
27-01-2023 17:26
Static task
static1
Behavioral task
behavioral1
Sample
A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe
Resource
win7-20221111-en
General
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Target
A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe
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Size
426KB
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MD5
8007511dfd5ce8407f5dd7cbf47ded88
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SHA1
36740f63336dde0d4b1960107f7b25ab17969852
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SHA256
a831a3ead1f64d951fadcd5a15cf14e86f9b6b4d418f5fdb6e28acbe7d90264a
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SHA512
1c868feb936d37656bf8e2353e0120d5d4d1f36395ca3043ff4c308d2cf47cce1dae2384b75f8b73b95643264e3aba64423fd227b6998cefda229dbce035ae2b
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SSDEEP
12288:yEiSWvHCOGdMFkXqvoX6RR0TCtyYduHNI:YzvHCRMFkUoqRR0TCAYdE
Malware Config
Extracted
vidar
1.5
14
https://t.me/dahuasecurit
https://steamcommunity.com/profiles/76561199441999914
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profile_id
14
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe -
Loads dropped DLL 2 IoCs
Processes:
A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exepid process 4532 A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe 4532 A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 4644 4532 WerFault.exe A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 4004 timeout.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exepid process 4532 A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe 4532 A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.execmd.exedescription pid process target process PID 4532 wrote to memory of 8 4532 A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe cmd.exe PID 4532 wrote to memory of 8 4532 A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe cmd.exe PID 4532 wrote to memory of 8 4532 A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe cmd.exe PID 8 wrote to memory of 4004 8 cmd.exe timeout.exe PID 8 wrote to memory of 4004 8 cmd.exe timeout.exe PID 8 wrote to memory of 4004 8 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe"C:\Users\Admin\AppData\Local\Temp\A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe"1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\A831A3EAD1F64D951FADCD5A15CF14E86F9B6B4D418F5.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 63⤵
- Delays execution with timeout.exe
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4532 -s 19082⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4532 -ip 45321⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\ProgramData\mozglue.dllFilesize
133KB
MD58f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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C:\ProgramData\nss3.dllFilesize
1.2MB
MD5bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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memory/8-158-0x0000000000000000-mapping.dmp
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memory/4004-159-0x0000000000000000-mapping.dmp
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memory/4532-132-0x000000000083E000-0x000000000086F000-memory.dmpFilesize
196KB
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memory/4532-133-0x0000000000740000-0x0000000000797000-memory.dmpFilesize
348KB
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memory/4532-134-0x0000000000400000-0x0000000000470000-memory.dmpFilesize
448KB
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memory/4532-135-0x000000000083E000-0x000000000086F000-memory.dmpFilesize
196KB
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memory/4532-136-0x0000000000400000-0x0000000000470000-memory.dmpFilesize
448KB
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memory/4532-137-0x0000000060900000-0x0000000060992000-memory.dmpFilesize
584KB
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memory/4532-160-0x0000000000400000-0x0000000000470000-memory.dmpFilesize
448KB