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Analysis
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max time kernel
146s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
31/05/2024, 12:23
Static task
static1
Behavioral task
behavioral1
Sample
cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448.exe
Resource
win10v2004-20240426-en
General
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Target
cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448.exe
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Size
2.4MB
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MD5
e0eba3b0707bc7dd205613bf6a64a9c5
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SHA1
a36de8569edf869edfae0b566a4c4a51cca4bcb6
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SHA256
cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448
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SHA512
f4264c0f7a99f7d4a1b0e4147c02f293c6d72d50a5cc469a9a2fc5e0aab625f9830af5ea48e62ab52224e95ce8db59bf90c4fb0c1dde64d6be684280f8ac7ac9
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SSDEEP
49152:wQc81KnB/a/hNT/d5Ya8aesY3Ot4N7G/:wDta/hNT/d5n0etD/
Malware Config
Extracted
stealc
Extracted
vidar
https://t.me/ta904ek
https://steamcommunity.com/profiles/76561199695752269
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
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Detect Vidar Stealer 8 IoCs
resource yara_rule behavioral2/memory/3580-1-0x0000000002B10000-0x0000000002C5C000-memory.dmp family_vidar_v7 behavioral2/memory/4112-8-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4112-4-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4112-10-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4112-15-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4112-16-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4112-33-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4112-34-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
pid Process 4112 kat3F99.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 3580 set thread context of 4112 3580 cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448.exe 79 -
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 kat3F99.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4112 kat3F99.tmp 4112 kat3F99.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 3580 wrote to memory of 4112 3580 cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448.exe 79 PID 3580 wrote to memory of 4112 3580 cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448.exe 79 PID 3580 wrote to memory of 4112 3580 cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448.exe 79 PID 3580 wrote to memory of 4112 3580 cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448.exe 79 PID 3580 wrote to memory of 4112 3580 cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448.exe 79 PID 3580 wrote to memory of 4112 3580 cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448.exe 79 PID 3580 wrote to memory of 4112 3580 cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448.exe 79 PID 3580 wrote to memory of 4112 3580 cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448.exe"C:\Users\Admin\AppData\Local\Temp\cb48d8e10e4a76b967c90f4c1ea6b1036288d0a3baf20335328cd39148808448.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3580 -
C:\Users\Admin\AppData\Local\Temp\kat3F99.tmpC:\Users\Admin\AppData\Local\Temp\kat3F99.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4112
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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