Analysis
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max time kernel
147s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
23-05-2024 07:58
Static task
static1
Behavioral task
behavioral1
Sample
8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exe
Resource
win10v2004-20240508-en
General
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Target
8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exe
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Size
1.8MB
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MD5
e0d145ddcd92b156de696a2102a37648
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SHA1
637f0689f43e0567929d4eab810df79601b18c4c
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SHA256
8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338
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SHA512
9f6fd8cb346bccbaee340ce5114f8fb3bd00c30a56f8acffcc6c024fd23c49984066991402a7c89dbafbc19f92c0e017f12f9eb8bdda64361db128a9a4ee59f4
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SSDEEP
24576:FBfuZfeq6sxO6hTdtTF+TxMoxQH1Tj4wtjYZH1DmoYYzi3WH45yv+OueSJhm9e:F7qFbJtTF+TxMoxc1TU+j+dAzGwlrh
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 8 IoCs
Processes:
resource yara_rule behavioral2/memory/4616-3-0x0000000004010000-0x0000000004159000-memory.dmp family_vidar_v7 behavioral2/memory/2716-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2716-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2716-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2716-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2716-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2716-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2716-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat5311.tmppid process 2716 kat5311.tmp -
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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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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Suspicious use of SetThreadContext 1 IoCs
Processes:
8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exedescription pid process target process PID 4616 set thread context of 2716 4616 8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exe kat5311.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat5311.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat5311.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat5311.tmppid process 2716 kat5311.tmp 2716 kat5311.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exedescription pid process target process PID 4616 wrote to memory of 2716 4616 8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exe kat5311.tmp PID 4616 wrote to memory of 2716 4616 8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exe kat5311.tmp PID 4616 wrote to memory of 2716 4616 8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exe kat5311.tmp PID 4616 wrote to memory of 2716 4616 8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exe kat5311.tmp PID 4616 wrote to memory of 2716 4616 8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exe kat5311.tmp PID 4616 wrote to memory of 2716 4616 8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exe kat5311.tmp PID 4616 wrote to memory of 2716 4616 8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exe kat5311.tmp PID 4616 wrote to memory of 2716 4616 8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exe kat5311.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exe"C:\Users\Admin\AppData\Local\Temp\8cb0934a7afa08a4f14e08903fd794c3a53b8e9c56732b513b590227d58c9338.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4616 -
C:\Users\Admin\AppData\Local\Temp\kat5311.tmpC:\Users\Admin\AppData\Local\Temp\kat5311.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2716
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\kat5311.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2716-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2716-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2716-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2716-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2716-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2716-19-0x0000000019360000-0x00000000195BF000-memory.dmpFilesize
2.4MB
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memory/2716-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2716-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4616-0-0x0000000002540000-0x0000000002541000-memory.dmpFilesize
4KB
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memory/4616-3-0x0000000004010000-0x0000000004159000-memory.dmpFilesize
1.3MB
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memory/4616-10-0x0000000000400000-0x00000000005D1000-memory.dmpFilesize
1.8MB