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
25-05-2024 18:51
Static task
static1
Behavioral task
behavioral1
Sample
fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exe
Resource
win10v2004-20240508-en
General
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Target
fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exe
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Size
2.0MB
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MD5
9e9f02afb8384fa367af4c70d113b7c7
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SHA1
8eb146cdccd83e4be0adb304df2f5e4c166e3e12
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SHA256
fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10
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SHA512
4689242955934a23720c37862e2cf7d3d4ed4e1a5447959fd648d9f56e014d1ecaaea3ef7212f4a530263ffde7cd26def5acb4a107d49bccdbd0d9113a1341e3
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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 behavioral2/memory/2096-2-0x0000000004040000-0x0000000004189000-memory.dmp family_vidar_v7 behavioral2/memory/1916-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1916-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1916-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1916-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1916-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1916-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1916-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat5275.tmppid process 1916 kat5275.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:
fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exedescription pid process target process PID 2096 set thread context of 1916 2096 fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exe kat5275.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat5275.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat5275.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat5275.tmppid process 1916 kat5275.tmp 1916 kat5275.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exedescription pid process target process PID 2096 wrote to memory of 1916 2096 fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exe kat5275.tmp PID 2096 wrote to memory of 1916 2096 fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exe kat5275.tmp PID 2096 wrote to memory of 1916 2096 fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exe kat5275.tmp PID 2096 wrote to memory of 1916 2096 fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exe kat5275.tmp PID 2096 wrote to memory of 1916 2096 fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exe kat5275.tmp PID 2096 wrote to memory of 1916 2096 fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exe kat5275.tmp PID 2096 wrote to memory of 1916 2096 fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exe kat5275.tmp PID 2096 wrote to memory of 1916 2096 fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exe kat5275.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exe"C:\Users\Admin\AppData\Local\Temp\fed958af4b15e9ba40851e78a659fc9ca91695a02cc186bd67d5f3056f890f10.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2096 -
C:\Users\Admin\AppData\Local\Temp\kat5275.tmpC:\Users\Admin\AppData\Local\Temp\kat5275.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1916
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat5275.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1916-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1916-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1916-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1916-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1916-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1916-19-0x000000001B890000-0x000000001BAEF000-memory.dmpFilesize
2.4MB
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memory/1916-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1916-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2096-0-0x0000000002370000-0x0000000002371000-memory.dmpFilesize
4KB
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memory/2096-2-0x0000000004040000-0x0000000004189000-memory.dmpFilesize
1.3MB
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memory/2096-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB