Analysis
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max time kernel
149s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 07:48
Static task
static1
Behavioral task
behavioral1
Sample
d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exe
Resource
win10v2004-20240426-en
General
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Target
d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exe
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Size
2.0MB
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MD5
4d686811c4dd1ab8c1620f7cb8572d3b
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SHA1
2ee200ca78f0776c37d6d497bf9d7578d04e663c
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SHA256
d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee
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SHA512
dc12d71197cb69ede5ddae7312168c8752b9d7c5f581488c4049b328a9fe0c2b71f7c2cfd76277574fb6e4e6e2bd4dcdf2c87002fea6305f20e4097030d8a6dc
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SSDEEP
49152:s4K3x1vU2JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex182tIuoITsdZ
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/212-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/212-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/212-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4880-2-0x00000000040C0000-0x0000000004209000-memory.dmp family_vidar_v7 behavioral1/memory/212-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/212-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/212-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/212-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4B90.tmppid process 212 kat4B90.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:
d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exedescription pid process target process PID 4880 set thread context of 212 4880 d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exe kat4B90.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4B90.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4B90.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4B90.tmppid process 212 kat4B90.tmp 212 kat4B90.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exedescription pid process target process PID 4880 wrote to memory of 212 4880 d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exe kat4B90.tmp PID 4880 wrote to memory of 212 4880 d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exe kat4B90.tmp PID 4880 wrote to memory of 212 4880 d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exe kat4B90.tmp PID 4880 wrote to memory of 212 4880 d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exe kat4B90.tmp PID 4880 wrote to memory of 212 4880 d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exe kat4B90.tmp PID 4880 wrote to memory of 212 4880 d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exe kat4B90.tmp PID 4880 wrote to memory of 212 4880 d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exe kat4B90.tmp PID 4880 wrote to memory of 212 4880 d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exe kat4B90.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exe"C:\Users\Admin\AppData\Local\Temp\d28b3ea1f8fd6885497e550e37a019d0a364a6d1bc26222889a62e15b3389dee.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4B90.tmpC:\Users\Admin\AppData\Local\Temp\kat4B90.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\kat4B90.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/212-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/212-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/212-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/212-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/212-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/212-20-0x000000001B760000-0x000000001B9BF000-memory.dmpFilesize
2.4MB
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memory/212-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/212-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4880-0-0x0000000002260000-0x0000000002261000-memory.dmpFilesize
4KB
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memory/4880-2-0x00000000040C0000-0x0000000004209000-memory.dmpFilesize
1.3MB
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memory/4880-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB