Analysis
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max time kernel
91s -
max time network
123s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
01-06-2024 06:57
Static task
static1
Behavioral task
behavioral1
Sample
bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exe
Resource
win10v2004-20240508-en
General
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Target
bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exe
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Size
2.4MB
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MD5
d7f163b6badc7de9a6e1981800950855
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SHA1
da2a62e690e250ec19955d29072769f84adc90f9
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SHA256
bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20
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SHA512
86b029fd5a86a1a7bdc7149db59c271dfdcf4036929c4bc8a2161c911246f09d78f6f60b66999d425236316cac041a0ef50b0edadbdb129f76008f5c93a3f5b0
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SSDEEP
49152:wQc81KnB/a/hNT/ddYa8aesY3Ot4N7G/:wDta/hNT/ddn0etD/
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
Processes:
resource yara_rule behavioral2/memory/784-1-0x00000000040A0000-0x00000000041EC000-memory.dmp family_vidar_v7 behavioral2/memory/4996-8-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4996-9-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4996-4-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4996-24-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4996-25-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4996-42-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4996-43-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4314.tmppid Process 4996 kat4314.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:
bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exedescription pid Process procid_target PID 784 set thread context of 4996 784 bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exe 76 -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4314.tmpdescription ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4314.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4314.tmppid Process 4996 kat4314.tmp 4996 kat4314.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exedescription pid Process procid_target PID 784 wrote to memory of 4996 784 bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exe 76 PID 784 wrote to memory of 4996 784 bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exe 76 PID 784 wrote to memory of 4996 784 bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exe 76 PID 784 wrote to memory of 4996 784 bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exe 76 PID 784 wrote to memory of 4996 784 bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exe 76 PID 784 wrote to memory of 4996 784 bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exe 76 PID 784 wrote to memory of 4996 784 bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exe 76 PID 784 wrote to memory of 4996 784 bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exe 76
Processes
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C:\Users\Admin\AppData\Local\Temp\bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exe"C:\Users\Admin\AppData\Local\Temp\bef99d959d60db4a024f2bfbebbbc5ab43e7658f16965c9c11e2eb99f5740f20.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:784 -
C:\Users\Admin\AppData\Local\Temp\kat4314.tmpC:\Users\Admin\AppData\Local\Temp\kat4314.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4996
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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