Analysis
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max time kernel
149s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
01-07-2024 00:05
Static task
static1
Behavioral task
behavioral1
Sample
35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exe
Resource
win10v2004-20240508-en
General
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Target
35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exe
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Size
2.2MB
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MD5
582f1ddff2350d28f8936f9390fd2b19
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SHA1
3dcf1a9d3f9cfab8adee953f382e6bd6f96ada2e
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SHA256
35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64
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SHA512
a096a44d62ed94111e07089a6347c1b71e1a017bfc5b44cd5e1fe272fa79edbc8d887e65c9f2888bcecd92bfa2051e7d0f80f831f2e2c46f2cb296895408997e
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SSDEEP
24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXD+U2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPZ21tuuIeNHYGY0LzjsJxK
Malware Config
Extracted
vidar
https://t.me/g067n
https://steamcommunity.com/profiles/76561199707802586
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0
Signatures
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Detect Vidar Stealer 14 IoCs
Processes:
resource yara_rule behavioral1/memory/820-1-0x0000000004170000-0x0000000004283000-memory.dmp family_vidar_v7 behavioral1/memory/864-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/864-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/864-10-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/864-22-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/864-23-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/864-40-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/864-41-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/864-57-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/864-58-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/864-69-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/864-70-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/864-71-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/864-72-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
kat6A91.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation kat6A91.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat6A91.tmppid process 864 kat6A91.tmp -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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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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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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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:
35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exedescription pid process target process PID 820 set thread context of 864 820 35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exe kat6A91.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat6A91.tmpdescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 kat6A91.tmp Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat6A91.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 4264 timeout.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
kat6A91.tmppid process 864 kat6A91.tmp 864 kat6A91.tmp 864 kat6A91.tmp 864 kat6A91.tmp 864 kat6A91.tmp 864 kat6A91.tmp 864 kat6A91.tmp 864 kat6A91.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exekat6A91.tmpcmd.exedescription pid process target process PID 820 wrote to memory of 864 820 35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exe kat6A91.tmp PID 820 wrote to memory of 864 820 35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exe kat6A91.tmp PID 820 wrote to memory of 864 820 35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exe kat6A91.tmp PID 820 wrote to memory of 864 820 35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exe kat6A91.tmp PID 820 wrote to memory of 864 820 35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exe kat6A91.tmp PID 820 wrote to memory of 864 820 35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exe kat6A91.tmp PID 820 wrote to memory of 864 820 35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exe kat6A91.tmp PID 820 wrote to memory of 864 820 35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exe kat6A91.tmp PID 864 wrote to memory of 1424 864 kat6A91.tmp cmd.exe PID 864 wrote to memory of 1424 864 kat6A91.tmp cmd.exe PID 864 wrote to memory of 1424 864 kat6A91.tmp cmd.exe PID 1424 wrote to memory of 4264 1424 cmd.exe timeout.exe PID 1424 wrote to memory of 4264 1424 cmd.exe timeout.exe PID 1424 wrote to memory of 4264 1424 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exe"C:\Users\Admin\AppData\Local\Temp\35b2c0ea942507b97ba33691ab3a016431fe0e0642d8e89f32cd1ca942c06d64.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat6A91.tmpC:\Users\Admin\AppData\Local\Temp\kat6A91.tmp2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat6A91.tmp" & rd /s /q "C:\ProgramData\BFCFBFBFBKFI" & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat6A91.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/820-9-0x0000000000400000-0x0000000000641000-memory.dmpFilesize
2.3MB
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memory/820-1-0x0000000004170000-0x0000000004283000-memory.dmpFilesize
1.1MB
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memory/820-0-0x0000000000920000-0x0000000000921000-memory.dmpFilesize
4KB
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memory/864-23-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/864-41-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/864-8-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/864-22-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/864-4-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/864-25-0x0000000020160000-0x00000000203BF000-memory.dmpFilesize
2.4MB
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memory/864-40-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/864-10-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/864-57-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/864-58-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/864-69-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/864-70-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/864-71-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/864-72-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB