Analysis
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max time kernel
125s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
25-12-2023 23:03
Static task
static1
Behavioral task
behavioral1
Sample
4202894ffe0c73afad4b2d0d59c71c44.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
4202894ffe0c73afad4b2d0d59c71c44.exe
Resource
win10v2004-20231215-en
General
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Target
4202894ffe0c73afad4b2d0d59c71c44.exe
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Size
36KB
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MD5
4202894ffe0c73afad4b2d0d59c71c44
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SHA1
9844409fb20fca3332f2dbd16bb1580d4dae47f9
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SHA256
9109cf2acaaadd902d8a2b6e4655ae849d53865c6899992f6975fd37a56d8963
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SHA512
80501955018260b6ab690acce9f7df0d90455767968b1ccc435c9e087cfb4ff40c4fcd91fdb6d6457bb32649d3fda63435ecd4551141daed8af2448749f2187e
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SSDEEP
768:L5uhMogHxJ5CVpm6jFHd+mc+8MfIsVNwDhqpsqc:9FoglCVBjdqz9Nwp0
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 2940 BCSSync.exe 2756 BCSSync.exe -
Loads dropped DLL 2 IoCs
pid Process 1280 4202894ffe0c73afad4b2d0d59c71c44.exe 1280 4202894ffe0c73afad4b2d0d59c71c44.exe -
Unexpected DNS network traffic destination 10 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description ioc Destination IP 50.7.247.251 Destination IP 50.7.247.251 Destination IP 50.7.247.251 Destination IP 50.7.247.251 Destination IP 50.7.247.251 Destination IP 50.7.247.251 Destination IP 50.7.247.251 Destination IP 50.7.247.251 Destination IP 50.7.247.251 Destination IP 50.7.247.251 -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1724 set thread context of 1280 1724 4202894ffe0c73afad4b2d0d59c71c44.exe 28 PID 2940 set thread context of 2756 2940 BCSSync.exe 30 -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe 4202894ffe0c73afad4b2d0d59c71c44.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe 4202894ffe0c73afad4b2d0d59c71c44.exe -
Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\Fonts\JpcY5Y.com 4202894ffe0c73afad4b2d0d59c71c44.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1280 4202894ffe0c73afad4b2d0d59c71c44.exe 2756 BCSSync.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 1724 wrote to memory of 1280 1724 4202894ffe0c73afad4b2d0d59c71c44.exe 28 PID 1724 wrote to memory of 1280 1724 4202894ffe0c73afad4b2d0d59c71c44.exe 28 PID 1724 wrote to memory of 1280 1724 4202894ffe0c73afad4b2d0d59c71c44.exe 28 PID 1724 wrote to memory of 1280 1724 4202894ffe0c73afad4b2d0d59c71c44.exe 28 PID 1724 wrote to memory of 1280 1724 4202894ffe0c73afad4b2d0d59c71c44.exe 28 PID 1724 wrote to memory of 1280 1724 4202894ffe0c73afad4b2d0d59c71c44.exe 28 PID 1724 wrote to memory of 1280 1724 4202894ffe0c73afad4b2d0d59c71c44.exe 28 PID 1724 wrote to memory of 1280 1724 4202894ffe0c73afad4b2d0d59c71c44.exe 28 PID 1724 wrote to memory of 1280 1724 4202894ffe0c73afad4b2d0d59c71c44.exe 28 PID 1280 wrote to memory of 2940 1280 4202894ffe0c73afad4b2d0d59c71c44.exe 29 PID 1280 wrote to memory of 2940 1280 4202894ffe0c73afad4b2d0d59c71c44.exe 29 PID 1280 wrote to memory of 2940 1280 4202894ffe0c73afad4b2d0d59c71c44.exe 29 PID 1280 wrote to memory of 2940 1280 4202894ffe0c73afad4b2d0d59c71c44.exe 29 PID 2940 wrote to memory of 2756 2940 BCSSync.exe 30 PID 2940 wrote to memory of 2756 2940 BCSSync.exe 30 PID 2940 wrote to memory of 2756 2940 BCSSync.exe 30 PID 2940 wrote to memory of 2756 2940 BCSSync.exe 30 PID 2940 wrote to memory of 2756 2940 BCSSync.exe 30 PID 2940 wrote to memory of 2756 2940 BCSSync.exe 30 PID 2940 wrote to memory of 2756 2940 BCSSync.exe 30 PID 2940 wrote to memory of 2756 2940 BCSSync.exe 30 PID 2940 wrote to memory of 2756 2940 BCSSync.exe 30 PID 2756 wrote to memory of 2132 2756 BCSSync.exe 31 PID 2756 wrote to memory of 2132 2756 BCSSync.exe 31 PID 2756 wrote to memory of 2132 2756 BCSSync.exe 31 PID 2756 wrote to memory of 2132 2756 BCSSync.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\4202894ffe0c73afad4b2d0d59c71c44.exe"C:\Users\Admin\AppData\Local\Temp\4202894ffe0c73afad4b2d0d59c71c44.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1724 -
C:\Users\Admin\AppData\Local\Temp\4202894ffe0c73afad4b2d0d59c71c44.exeC:\Users\Admin\AppData\Local\Temp\4202894ffe0c73afad4b2d0d59c71c44.exe2⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1280 -
C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe"C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe" DEL:C:\Users\Admin\AppData\Local\Temp\4202894ffe0c73afad4b2d0d59c71c44.exe3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2940 -
C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe"C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2756 -
C:\Program Files (x86)\Microsoft Office\Office14\BCSSync .exe"C:\Program Files (x86)\Microsoft Office\Office14\BCSSync .exe" "C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe"5⤵PID:2132
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
36KB
MD5566ba7eb8d94c2fddd37bf9206c4d42f
SHA128ebf385ed6a326afe547d1ebd242fafd4439a6f
SHA2567032be33a48079f9ec0e3bbbe3e7a96bc53dfc9a8fab5c60304050ed4e6f854d
SHA512119fce5667b2b02f21026ce5847ee8938b02bee81741fd1ee4b1671b93877bd25fe656d4be6404ce188b3ff9fa8e1dcd542d9cb3c90a31d140bc3629b8d32339