Resubmissions
13/04/2024, 10:00
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240226-feyrbsdb58 8Analysis
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max time kernel
170s -
max time network
1204s -
platform
windows11-21h2_x64 -
resource
win11-20240221-en -
resource tags
arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system -
submitted
09/04/2024, 08:20
Static task
static1
Behavioral task
behavioral1
Sample
40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe
Resource
win10v2004-20240319-en
Behavioral task
behavioral4
Sample
40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe
Resource
win11-20240221-en
General
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Target
40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe
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Size
1.8MB
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MD5
147f5f5bbc80b2ad753993e15f3f32c2
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SHA1
16d73b4abeef12cf76414338901eb7bbef46775f
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SHA256
40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990
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SHA512
9c43aaa68161ef04c60e3f64c3fd54426dfd387f0013f009f3da94d45f19e514cd41de7b95865c47f55e5800222fd74736659138bb96406aa37f9cdc8e5799b6
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SSDEEP
49152:L0F7w+ANy7moCOmY9x5VlLdf0w26/biK:IaXsCc9nmwfOK
Malware Config
Signatures
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resource yara_rule behavioral4/memory/1380-4-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-2-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-5-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-6-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-7-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-8-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-30-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-42-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-46-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-47-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-48-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-49-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-50-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-51-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-56-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-57-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-58-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-61-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-79-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-70-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-86-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-100-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-105-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-98-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-81-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-78-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-102-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-101-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-85-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-83-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-95-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-90-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-89-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-76-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-84-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-74-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-82-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-80-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-77-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-69-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-65-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-67-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-66-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-62-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-59-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-52-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-54-0x0000000000400000-0x0000000000848000-memory.dmp upx behavioral4/memory/1380-53-0x0000000000400000-0x0000000000848000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CSRSS = "\"C:\\ProgramData\\Drivers\\csrss.exe\"" 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe -
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
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Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3756 set thread context of 1380 3756 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 79 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1380 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 1380 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 1380 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 1380 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 1380 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 1380 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 3756 wrote to memory of 1380 3756 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 79 PID 3756 wrote to memory of 1380 3756 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 79 PID 3756 wrote to memory of 1380 3756 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 79 PID 3756 wrote to memory of 1380 3756 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 79 PID 3756 wrote to memory of 1380 3756 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 79 PID 3756 wrote to memory of 1380 3756 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 79 PID 3756 wrote to memory of 1380 3756 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 79 PID 3756 wrote to memory of 1380 3756 40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe"C:\Users\Admin\AppData\Local\Temp\40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3756 -
C:\Users\Admin\AppData\Local\Temp\40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe"C:\Users\Admin\AppData\Local\Temp\40dc1ae099f2278650c0aa599ba00f659a87996208133d6a64b0cc5cbb5fe990.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
PID:1380
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2.6MB
MD521112c87b4bb2b0bb8004c1f1653d36e
SHA131aed7e1843c4cc528931710ba578f909e71d764
SHA256556b87267249b63a0e4ab4e0afd7924e88f72e036c55c1e18c40c7889762449c
SHA512b95c5603d090c79c8e67bd8f6f5cedffd2d0c5b1d453489d99733997ff2722d83a138c925790ed4341d61756f859ff5523ef54674553b6602b730a7042eccb2f
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Filesize
6.4MB
MD5d47b32f5fadb92c675ce98e70f6f7f1e
SHA1d1b532d9f849eda8f7b7f303a945c985f5cf6988
SHA256286c5392a5add00488282f9a262afc712be94a95615e4e7dfb0e27bca8c279bb
SHA51274d0f5cd309e0c72a09f27a8589f3a417d49b35c6b9ad7a65ab96e23fc8d03afd40bd42aef10c85811fb2dc1f337027af092cd43152464ce9b971051a0ef39a2