Analysis
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max time kernel
143s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
26-05-2024 08:16
Static task
static1
Behavioral task
behavioral1
Sample
3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exe
Resource
win10v2004-20240226-en
General
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Target
3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exe
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Size
2.0MB
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MD5
7bde08f5dd2a433dae25a8f8b3e70970
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SHA1
648ff6ecdb0e0769055ea8ffc49a78d6833632e4
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SHA256
3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5
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SHA512
5bf3773d438e15077c129b45767536b63d304989c7dcbaff12417550ae29e1858cd825024a351c9b3f418bcd619226bf5580ab01ef840a8b9baac95617fb166a
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SSDEEP
49152:s4K3x1vU6JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex186tIuoITsdZ
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 9 IoCs
Processes:
resource yara_rule behavioral1/memory/4752-1-0x00000000042A0000-0x00000000043E9000-memory.dmp family_vidar_v7 behavioral1/memory/1804-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1804-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1804-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1804-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1804-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1804-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1804-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1804-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat1604.tmppid process 1804 kat1604.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:
3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exedescription pid process target process PID 4752 set thread context of 1804 4752 3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exe kat1604.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat1604.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat1604.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat1604.tmppid process 1804 kat1604.tmp 1804 kat1604.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exedescription pid process target process PID 4752 wrote to memory of 1804 4752 3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exe kat1604.tmp PID 4752 wrote to memory of 1804 4752 3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exe kat1604.tmp PID 4752 wrote to memory of 1804 4752 3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exe kat1604.tmp PID 4752 wrote to memory of 1804 4752 3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exe kat1604.tmp PID 4752 wrote to memory of 1804 4752 3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exe kat1604.tmp PID 4752 wrote to memory of 1804 4752 3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exe kat1604.tmp PID 4752 wrote to memory of 1804 4752 3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exe kat1604.tmp PID 4752 wrote to memory of 1804 4752 3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exe kat1604.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exe"C:\Users\Admin\AppData\Local\Temp\3f8a5414c8ed56d541974d3b650c9cf798a2fdefeaf5fb307540fd64c99d29d5.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat1604.tmpC:\Users\Admin\AppData\Local\Temp\kat1604.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4172 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat1604.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1804-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1804-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1804-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1804-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1804-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1804-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1804-21-0x000000001B7A0000-0x000000001B9FF000-memory.dmpFilesize
2.4MB
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memory/1804-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1804-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4752-1-0x00000000042A0000-0x00000000043E9000-memory.dmpFilesize
1.3MB
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memory/4752-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/4752-0-0x0000000000800000-0x0000000000801000-memory.dmpFilesize
4KB