Analysis
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max time kernel
79s -
max time network
138s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
26-05-2024 20:52
Static task
static1
Behavioral task
behavioral1
Sample
53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exe
Resource
win10v2004-20240426-en
General
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Target
53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exe
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Size
2.0MB
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MD5
84a0e6c0b89914887491c4f7b5428842
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SHA1
99862d8e2aa8500afb58d3693a2d2591033a18c2
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SHA256
53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1
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SHA512
0305232edbe1551ab2621f9cc234b75edc675900a7c5b65297434a6e545409b0009461a8b3c43bce5a37a07f91698272da6958be7663fe029ab86972d3a5d79f
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SSDEEP
49152:OePpQEFJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEFtIuoITsdZ
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/4572-2-0x0000000004000000-0x0000000004149000-memory.dmp family_vidar_v7 behavioral1/memory/1636-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1636-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1636-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1636-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1636-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1636-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1636-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat71A6.tmppid process 1636 kat71A6.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:
53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exedescription pid process target process PID 4572 set thread context of 1636 4572 53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exe kat71A6.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat71A6.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat71A6.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat71A6.tmppid process 1636 kat71A6.tmp 1636 kat71A6.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exedescription pid process target process PID 4572 wrote to memory of 1636 4572 53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exe kat71A6.tmp PID 4572 wrote to memory of 1636 4572 53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exe kat71A6.tmp PID 4572 wrote to memory of 1636 4572 53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exe kat71A6.tmp PID 4572 wrote to memory of 1636 4572 53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exe kat71A6.tmp PID 4572 wrote to memory of 1636 4572 53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exe kat71A6.tmp PID 4572 wrote to memory of 1636 4572 53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exe kat71A6.tmp PID 4572 wrote to memory of 1636 4572 53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exe kat71A6.tmp PID 4572 wrote to memory of 1636 4572 53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exe kat71A6.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exe"C:\Users\Admin\AppData\Local\Temp\53e255e08125e37390f46ad04bc157b54932854c03d4fda7b12972fbe87b3bb1.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4572 -
C:\Users\Admin\AppData\Local\Temp\kat71A6.tmpC:\Users\Admin\AppData\Local\Temp\kat71A6.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1636
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat71A6.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1636-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1636-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1636-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1636-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1636-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1636-20-0x000000001DC80000-0x000000001DEDF000-memory.dmpFilesize
2.4MB
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memory/1636-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1636-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4572-0-0x00000000008B0000-0x00000000008B1000-memory.dmpFilesize
4KB
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memory/4572-2-0x0000000004000000-0x0000000004149000-memory.dmpFilesize
1.3MB
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memory/4572-10-0x0000000000400000-0x0000000000612000-memory.dmpFilesize
2.1MB