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Analysis
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max time kernel
139s -
max time network
101s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
20/05/2024, 19:34
Static task
static1
Behavioral task
behavioral1
Sample
bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45.exe
Resource
win10v2004-20240508-en
General
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Target
bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45.exe
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Size
2.0MB
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MD5
bb874688b123e8843616a022dff6720e
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SHA1
a9e1869608531551a033133e69a97dff68e51af7
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SHA256
bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45
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SHA512
ec25376b516f4ce0c558c877e0c6a0f1e5efcf6eed1c196d0a8006a57da0e914711eff86b9645c7ceec4d07febe591cbecbdc708e9b3b1263d2215169aee68d9
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SSDEEP
49152:IFno/jfcJtTF+TxMoxc1TU+j+dAzGkiT:IFno/jUtIuoITsdZT
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 8 IoCs
resource yara_rule behavioral1/memory/3756-2-0x0000000004230000-0x0000000004379000-memory.dmp family_vidar_v7 behavioral1/memory/2668-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2668-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2668-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2668-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2668-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2668-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2668-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
pid Process 2668 kat7668.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
description pid Process procid_target PID 3756 set thread context of 2668 3756 bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45.exe 86 -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat7668.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2668 kat7668.tmp 2668 kat7668.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 3756 wrote to memory of 2668 3756 bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45.exe 86 PID 3756 wrote to memory of 2668 3756 bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45.exe 86 PID 3756 wrote to memory of 2668 3756 bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45.exe 86 PID 3756 wrote to memory of 2668 3756 bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45.exe 86 PID 3756 wrote to memory of 2668 3756 bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45.exe 86 PID 3756 wrote to memory of 2668 3756 bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45.exe 86 PID 3756 wrote to memory of 2668 3756 bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45.exe 86 PID 3756 wrote to memory of 2668 3756 bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45.exe"C:\Users\Admin\AppData\Local\Temp\bb1bf98277f2f971ef5dd3d084b76db78e415aa3e43f67c069908eb4fd959a45.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3756 -
C:\Users\Admin\AppData\Local\Temp\kat7668.tmpC:\Users\Admin\AppData\Local\Temp\kat7668.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2668
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f