Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
28-05-2024 06:04
Static task
static1
Behavioral task
behavioral1
Sample
45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exe
Resource
win10v2004-20240426-en
General
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Target
45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exe
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Size
1.9MB
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MD5
83a17c2534c4886111948c58a0e8bb10
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SHA1
fdb0e16af341b33b2c1cbe39b05f9bf67a716e00
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SHA256
45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e
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SHA512
d1aeb2833e7829f43c626299dd769e492d39541c2eb2dc5ac3f8120a5b5c5f64f6b7c2e5b01f8a279874cd18ef4864b12cd86b80f373baa630716385783cc674
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SSDEEP
49152:CdKfTn6vOJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnNtIuoITsdZ
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 behavioral1/memory/1468-2-0x0000000004160000-0x00000000042A9000-memory.dmp family_vidar_v7 behavioral1/memory/3176-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3176-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3176-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3176-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3176-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3176-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3176-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4333.tmppid process 3176 kat4333.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:
45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exedescription pid process target process PID 1468 set thread context of 3176 1468 45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exe kat4333.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4333.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4333.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4333.tmppid process 3176 kat4333.tmp 3176 kat4333.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exedescription pid process target process PID 1468 wrote to memory of 3176 1468 45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exe kat4333.tmp PID 1468 wrote to memory of 3176 1468 45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exe kat4333.tmp PID 1468 wrote to memory of 3176 1468 45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exe kat4333.tmp PID 1468 wrote to memory of 3176 1468 45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exe kat4333.tmp PID 1468 wrote to memory of 3176 1468 45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exe kat4333.tmp PID 1468 wrote to memory of 3176 1468 45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exe kat4333.tmp PID 1468 wrote to memory of 3176 1468 45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exe kat4333.tmp PID 1468 wrote to memory of 3176 1468 45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exe kat4333.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exe"C:\Users\Admin\AppData\Local\Temp\45067e7d5707b5d56d33ce62ae7f4bcf440b681db070ab275ab364e08b29817e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1468 -
C:\Users\Admin\AppData\Local\Temp\kat4333.tmpC:\Users\Admin\AppData\Local\Temp\kat4333.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3176
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4333.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1468-0-0x0000000002390000-0x0000000002391000-memory.dmpFilesize
4KB
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memory/1468-2-0x0000000004160000-0x00000000042A9000-memory.dmpFilesize
1.3MB
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memory/1468-10-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/3176-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3176-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3176-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3176-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3176-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3176-22-0x000000001B7B0000-0x000000001BA0F000-memory.dmpFilesize
2.4MB
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memory/3176-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3176-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB