Analysis
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max time kernel
132s -
max time network
131s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 16:49
Static task
static1
Behavioral task
behavioral1
Sample
b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exe
Resource
win10v2004-20240508-en
General
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Target
b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exe
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Size
2.0MB
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MD5
ad2f28bc16a608e1dbbba505bc6564f0
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SHA1
3950c434e5bd879165873189d2328a40ebb6a963
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SHA256
b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b
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SHA512
48d933394c1e39fea2e8b914651605e01f00022d56e9b737440f25afd306b97843b1e0261f728c7e18023e3e0638450e60924b549f4db3d1260f2c31dca03cba
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SSDEEP
49152:s4K3x1vUyJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18ytIuoITsdZ
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/4556-1-0x00000000041C0000-0x0000000004309000-memory.dmp family_vidar_v7 behavioral1/memory/4480-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4480-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4480-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4480-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4480-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4480-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4480-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat3C6D.tmppid process 4480 kat3C6D.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:
b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exedescription pid process target process PID 4556 set thread context of 4480 4556 b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exe kat3C6D.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat3C6D.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat3C6D.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat3C6D.tmppid process 4480 kat3C6D.tmp 4480 kat3C6D.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exedescription pid process target process PID 4556 wrote to memory of 4480 4556 b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exe kat3C6D.tmp PID 4556 wrote to memory of 4480 4556 b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exe kat3C6D.tmp PID 4556 wrote to memory of 4480 4556 b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exe kat3C6D.tmp PID 4556 wrote to memory of 4480 4556 b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exe kat3C6D.tmp PID 4556 wrote to memory of 4480 4556 b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exe kat3C6D.tmp PID 4556 wrote to memory of 4480 4556 b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exe kat3C6D.tmp PID 4556 wrote to memory of 4480 4556 b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exe kat3C6D.tmp PID 4556 wrote to memory of 4480 4556 b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exe kat3C6D.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exe"C:\Users\Admin\AppData\Local\Temp\b9fbec7fe7c101962342e85190a8b8027906b9f344e24286310d9973ad26737b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4556 -
C:\Users\Admin\AppData\Local\Temp\kat3C6D.tmpC:\Users\Admin\AppData\Local\Temp\kat3C6D.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4480
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat3C6D.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/4480-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4480-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4480-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4480-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4480-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4480-18-0x000000001B760000-0x000000001B9BF000-memory.dmpFilesize
2.4MB
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memory/4480-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4480-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4556-0-0x00000000024B0000-0x00000000024B1000-memory.dmpFilesize
4KB
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memory/4556-1-0x00000000041C0000-0x0000000004309000-memory.dmpFilesize
1.3MB
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memory/4556-8-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB