Analysis
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max time kernel
89s -
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
24-05-2024 13:57
Static task
static1
Behavioral task
behavioral1
Sample
5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exe
Resource
win10v2004-20240226-en
General
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Target
5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exe
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Size
2.4MB
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MD5
8b6c0a4303968f13f3645474a73cb7eb
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SHA1
4e760b62abb3edcd519a892f220667ba5d7e8871
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SHA256
5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c
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SHA512
f6f912550804b94d2b02203fe55539f16369800fb94918fdd0ea2de43e746f8bc3894f961a9076d495cf37e8d391b36cd82c5fdd60698f31d8d7859d525b9277
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SSDEEP
49152:jxIRJF1HL+VdX68kU6JtTF+TxMoxc1TU+j+dAzGwlrh:jEJF16dX68d6tIuoITsdZ
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/2448-1-0x00000000040F0000-0x0000000004239000-memory.dmp family_vidar_v7 behavioral2/memory/4296-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4296-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4296-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4296-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4296-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4296-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4296-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat45A4.tmppid process 4296 kat45A4.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:
5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exedescription pid process target process PID 2448 set thread context of 4296 2448 5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exe kat45A4.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat45A4.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat45A4.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat45A4.tmppid process 4296 kat45A4.tmp 4296 kat45A4.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exedescription pid process target process PID 2448 wrote to memory of 4296 2448 5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exe kat45A4.tmp PID 2448 wrote to memory of 4296 2448 5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exe kat45A4.tmp PID 2448 wrote to memory of 4296 2448 5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exe kat45A4.tmp PID 2448 wrote to memory of 4296 2448 5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exe kat45A4.tmp PID 2448 wrote to memory of 4296 2448 5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exe kat45A4.tmp PID 2448 wrote to memory of 4296 2448 5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exe kat45A4.tmp PID 2448 wrote to memory of 4296 2448 5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exe kat45A4.tmp PID 2448 wrote to memory of 4296 2448 5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exe kat45A4.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exe"C:\Users\Admin\AppData\Local\Temp\5345a1927284d4752231d68744c652dcada463f8488e3e5633938fb1fba5901c.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat45A4.tmpC:\Users\Admin\AppData\Local\Temp\kat45A4.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\kat45A4.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2448-0-0x00000000024E0000-0x00000000024E1000-memory.dmpFilesize
4KB
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memory/2448-1-0x00000000040F0000-0x0000000004239000-memory.dmpFilesize
1.3MB
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memory/2448-10-0x0000000000400000-0x0000000000678000-memory.dmpFilesize
2.5MB
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memory/4296-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4296-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4296-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4296-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4296-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4296-23-0x000000001B840000-0x000000001BA9F000-memory.dmpFilesize
2.4MB
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memory/4296-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4296-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB