Analysis
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max time kernel
90s -
max time network
124s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
27-05-2024 05:13
Static task
static1
Behavioral task
behavioral1
Sample
bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exe
Resource
win10v2004-20240508-en
General
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Target
bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exe
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Size
2.0MB
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MD5
92992f2916d68b48bac5836718783f18
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SHA1
ec0516f376c3474eef344d177f820d04ba574ca4
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SHA256
bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b
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SHA512
43d3edb2eb23fcd4ecca0e60c56264a55f92dc9e438a74d729719e38b0ee50d0d4818693afe0e0e6eaaacb24135ce8e91d1a21456797feb35d2e3041696c7129
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SSDEEP
49152:OePpQENJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQENtIuoITsdZ
Malware Config
Extracted
stealc
Extracted
vidar
https://steamcommunity.com/profiles/76561199689717899
https://t.me/copterwin
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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/2612-2-0x0000000004030000-0x0000000004179000-memory.dmp family_vidar_v7 behavioral2/memory/1056-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1056-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1056-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1056-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1056-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1056-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1056-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat541B.tmppid process 1056 kat541B.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:
bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exedescription pid process target process PID 2612 set thread context of 1056 2612 bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exe kat541B.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat541B.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat541B.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat541B.tmppid process 1056 kat541B.tmp 1056 kat541B.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exedescription pid process target process PID 2612 wrote to memory of 1056 2612 bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exe kat541B.tmp PID 2612 wrote to memory of 1056 2612 bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exe kat541B.tmp PID 2612 wrote to memory of 1056 2612 bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exe kat541B.tmp PID 2612 wrote to memory of 1056 2612 bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exe kat541B.tmp PID 2612 wrote to memory of 1056 2612 bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exe kat541B.tmp PID 2612 wrote to memory of 1056 2612 bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exe kat541B.tmp PID 2612 wrote to memory of 1056 2612 bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exe kat541B.tmp PID 2612 wrote to memory of 1056 2612 bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exe kat541B.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exe"C:\Users\Admin\AppData\Local\Temp\bde22d68fe152a5c95f830888cca8a7630f6904aa4f387f497ec48d95dc8fb6b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat541B.tmpC:\Users\Admin\AppData\Local\Temp\kat541B.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat541B.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1056-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1056-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1056-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1056-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1056-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1056-22-0x00000000260E0000-0x000000002633F000-memory.dmpFilesize
2.4MB
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memory/1056-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1056-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2612-0-0x0000000002460000-0x0000000002461000-memory.dmpFilesize
4KB
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memory/2612-2-0x0000000004030000-0x0000000004179000-memory.dmpFilesize
1.3MB
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memory/2612-9-0x0000000000400000-0x0000000000612000-memory.dmpFilesize
2.1MB