Analysis
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max time kernel
147s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
27-05-2024 12:21
Static task
static1
Behavioral task
behavioral1
Sample
c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exe
Resource
win10v2004-20240426-en
General
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Target
c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exe
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Size
1.9MB
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MD5
a0c61ba8b76b888cd4e2c21fcd43fce6
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SHA1
c21b659f3ccc717aa1f9fa7b2ababf3de72640b8
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SHA256
c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280
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SHA512
4b172c0d080c6b9c01ceaa44905cdb14d02ead9e9b18cbaf8923e826c47b6866b30026826c2f22dd2715345c75c44a61ef2130ec6aa07ba76946a6a7e0ff6177
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SSDEEP
49152:CdKfTn6veJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTndtIuoITsdZ
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/5044-2-0x0000000004040000-0x0000000004189000-memory.dmp family_vidar_v7 behavioral2/memory/5080-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5080-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5080-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5080-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5080-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5080-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5080-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat545A.tmppid process 5080 kat545A.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:
c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exedescription pid process target process PID 5044 set thread context of 5080 5044 c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exe kat545A.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat545A.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat545A.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat545A.tmppid process 5080 kat545A.tmp 5080 kat545A.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exedescription pid process target process PID 5044 wrote to memory of 5080 5044 c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exe kat545A.tmp PID 5044 wrote to memory of 5080 5044 c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exe kat545A.tmp PID 5044 wrote to memory of 5080 5044 c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exe kat545A.tmp PID 5044 wrote to memory of 5080 5044 c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exe kat545A.tmp PID 5044 wrote to memory of 5080 5044 c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exe kat545A.tmp PID 5044 wrote to memory of 5080 5044 c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exe kat545A.tmp PID 5044 wrote to memory of 5080 5044 c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exe kat545A.tmp PID 5044 wrote to memory of 5080 5044 c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exe kat545A.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exe"C:\Users\Admin\AppData\Local\Temp\c3b9bd59f869ba739fdc018b6a4f51655d617cbfc4a56f4168762ec683212280.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5044 -
C:\Users\Admin\AppData\Local\Temp\kat545A.tmpC:\Users\Admin\AppData\Local\Temp\kat545A.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:5080
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat545A.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/5044-0-0x0000000002340000-0x0000000002341000-memory.dmpFilesize
4KB
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memory/5044-2-0x0000000004040000-0x0000000004189000-memory.dmpFilesize
1.3MB
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memory/5044-9-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/5080-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5080-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5080-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5080-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5080-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5080-19-0x0000000019410000-0x000000001966F000-memory.dmpFilesize
2.4MB
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memory/5080-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5080-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB