Analysis
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max time kernel
121s -
max time network
123s -
platform
windows10_x64 -
resource
win10-en-20211014 -
submitted
10-11-2021 09:55
Static task
static1
Behavioral task
behavioral1
Sample
376b8f3c005d39067abeed0d0df58696495739e432377d138f06b9da0473d10d.exe
Resource
win10-en-20211014
General
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Target
376b8f3c005d39067abeed0d0df58696495739e432377d138f06b9da0473d10d.exe
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Size
127KB
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MD5
26c464453144b82f4a2f8b868084651a
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SHA1
ff89484718114020aec3e7d40e5708694070e5cc
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SHA256
376b8f3c005d39067abeed0d0df58696495739e432377d138f06b9da0473d10d
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SHA512
1088072c2cd99f911a476b3d3dc6e13464e1b6fc6c91cf3cae1cca568bb76b9dc92c41f0992d66232943128f59d67a16d4459cd6e2a6a1f7de274884650ec52a
Malware Config
Extracted
vidar
48.1
754
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profile_id
754
Signatures
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Vidar Stealer 3 IoCs
Processes:
resource yara_rule behavioral1/memory/3788-128-0x00000000004A115D-mapping.dmp family_vidar behavioral1/memory/3788-127-0x0000000000400000-0x00000000004D8000-memory.dmp family_vidar behavioral1/memory/3788-130-0x0000000000400000-0x00000000004D8000-memory.dmp family_vidar -
Downloads MZ/PE file
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Executes dropped EXE 2 IoCs
Processes:
MICROS~1.EXEMICROS~1.EXEpid process 3028 MICROS~1.EXE 3788 MICROS~1.EXE -
Loads dropped DLL 2 IoCs
Processes:
MICROS~1.EXEpid process 3788 MICROS~1.EXE 3788 MICROS~1.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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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
376b8f3c005d39067abeed0d0df58696495739e432377d138f06b9da0473d10d.exedescription ioc process Key created \REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce 376b8f3c005d39067abeed0d0df58696495739e432377d138f06b9da0473d10d.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\"" 376b8f3c005d39067abeed0d0df58696495739e432377d138f06b9da0473d10d.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Suspicious use of SetThreadContext 1 IoCs
Processes:
MICROS~1.EXEdescription pid process target process PID 3028 set thread context of 3788 3028 MICROS~1.EXE MICROS~1.EXE -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 2820 3788 WerFault.exe MICROS~1.EXE -
Suspicious behavior: EnumeratesProcesses 21 IoCs
Processes:
MICROS~1.EXEMICROS~1.EXEWerFault.exepid process 3028 MICROS~1.EXE 3028 MICROS~1.EXE 3028 MICROS~1.EXE 3788 MICROS~1.EXE 3788 MICROS~1.EXE 3788 MICROS~1.EXE 3788 MICROS~1.EXE 3788 MICROS~1.EXE 3788 MICROS~1.EXE 2820 WerFault.exe 2820 WerFault.exe 2820 WerFault.exe 2820 WerFault.exe 2820 WerFault.exe 2820 WerFault.exe 2820 WerFault.exe 2820 WerFault.exe 2820 WerFault.exe 2820 WerFault.exe 2820 WerFault.exe 2820 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
MICROS~1.EXEWerFault.exedescription pid process Token: SeDebugPrivilege 3028 MICROS~1.EXE Token: SeRestorePrivilege 2820 WerFault.exe Token: SeBackupPrivilege 2820 WerFault.exe Token: SeDebugPrivilege 2820 WerFault.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
376b8f3c005d39067abeed0d0df58696495739e432377d138f06b9da0473d10d.exeMICROS~1.EXEdescription pid process target process PID 2708 wrote to memory of 3028 2708 376b8f3c005d39067abeed0d0df58696495739e432377d138f06b9da0473d10d.exe MICROS~1.EXE PID 2708 wrote to memory of 3028 2708 376b8f3c005d39067abeed0d0df58696495739e432377d138f06b9da0473d10d.exe MICROS~1.EXE PID 2708 wrote to memory of 3028 2708 376b8f3c005d39067abeed0d0df58696495739e432377d138f06b9da0473d10d.exe MICROS~1.EXE PID 3028 wrote to memory of 3788 3028 MICROS~1.EXE MICROS~1.EXE PID 3028 wrote to memory of 3788 3028 MICROS~1.EXE MICROS~1.EXE PID 3028 wrote to memory of 3788 3028 MICROS~1.EXE MICROS~1.EXE PID 3028 wrote to memory of 3788 3028 MICROS~1.EXE MICROS~1.EXE PID 3028 wrote to memory of 3788 3028 MICROS~1.EXE MICROS~1.EXE PID 3028 wrote to memory of 3788 3028 MICROS~1.EXE MICROS~1.EXE PID 3028 wrote to memory of 3788 3028 MICROS~1.EXE MICROS~1.EXE PID 3028 wrote to memory of 3788 3028 MICROS~1.EXE MICROS~1.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\376b8f3c005d39067abeed0d0df58696495739e432377d138f06b9da0473d10d.exe"C:\Users\Admin\AppData\Local\Temp\376b8f3c005d39067abeed0d0df58696495739e432377d138f06b9da0473d10d.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\MICROS~1.EXEC:\Users\Admin\AppData\Local\Temp\IXP000.TMP\MICROS~1.EXE2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\MICROS~1.EXEC:\Users\Admin\AppData\Local\Temp\MICROS~1.EXE3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3788 -s 13364⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\MICROS~1.EXEMD5
52d5dab06aa1b976bb7c584b36f95c2d
SHA1b5b3cdd6e1ac21f8382991240cac3d50af63f967
SHA2563d9b1ddce39d90bb1efa52a5f866f74ea8b9acb922ec27fb15b753e45c864c90
SHA5127aeaae80477fafc739a1fd3e98d2646af080a54bf8aa78d7c8ab38bef75577d59bd2b868c5d5d8e1108a0d3c4cc10dbe2fada31cf7073b89030526d619c29e9e
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C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\MICROS~1.EXEMD5
52d5dab06aa1b976bb7c584b36f95c2d
SHA1b5b3cdd6e1ac21f8382991240cac3d50af63f967
SHA2563d9b1ddce39d90bb1efa52a5f866f74ea8b9acb922ec27fb15b753e45c864c90
SHA5127aeaae80477fafc739a1fd3e98d2646af080a54bf8aa78d7c8ab38bef75577d59bd2b868c5d5d8e1108a0d3c4cc10dbe2fada31cf7073b89030526d619c29e9e
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C:\Users\Admin\AppData\Local\Temp\MICROS~1.EXEMD5
52d5dab06aa1b976bb7c584b36f95c2d
SHA1b5b3cdd6e1ac21f8382991240cac3d50af63f967
SHA2563d9b1ddce39d90bb1efa52a5f866f74ea8b9acb922ec27fb15b753e45c864c90
SHA5127aeaae80477fafc739a1fd3e98d2646af080a54bf8aa78d7c8ab38bef75577d59bd2b868c5d5d8e1108a0d3c4cc10dbe2fada31cf7073b89030526d619c29e9e
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C:\Users\Admin\AppData\Local\Temp\MICROS~1.EXEMD5
52d5dab06aa1b976bb7c584b36f95c2d
SHA1b5b3cdd6e1ac21f8382991240cac3d50af63f967
SHA2563d9b1ddce39d90bb1efa52a5f866f74ea8b9acb922ec27fb15b753e45c864c90
SHA5127aeaae80477fafc739a1fd3e98d2646af080a54bf8aa78d7c8ab38bef75577d59bd2b868c5d5d8e1108a0d3c4cc10dbe2fada31cf7073b89030526d619c29e9e
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\ProgramData\mozglue.dllMD5
8f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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\ProgramData\nss3.dllMD5
bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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memory/2708-115-0x0000029BA2CC0000-0x0000029BA2CC2000-memory.dmpFilesize
8KB
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memory/2708-116-0x0000029BA2CC0000-0x0000029BA2CC2000-memory.dmpFilesize
8KB
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memory/3028-124-0x0000000005390000-0x0000000005391000-memory.dmpFilesize
4KB
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memory/3028-125-0x0000000005900000-0x0000000005901000-memory.dmpFilesize
4KB
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memory/3028-126-0x0000000005640000-0x00000000056C0000-memory.dmpFilesize
512KB
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memory/3028-123-0x0000000005200000-0x00000000052BA000-memory.dmpFilesize
744KB
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memory/3028-122-0x00000000049D0000-0x00000000049D1000-memory.dmpFilesize
4KB
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memory/3028-120-0x0000000000060000-0x0000000000061000-memory.dmpFilesize
4KB
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memory/3028-117-0x0000000000000000-mapping.dmp
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memory/3788-128-0x00000000004A115D-mapping.dmp
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memory/3788-127-0x0000000000400000-0x00000000004D8000-memory.dmpFilesize
864KB
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memory/3788-130-0x0000000000400000-0x00000000004D8000-memory.dmpFilesize
864KB