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Analysis
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max time kernel
146s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
14/01/2024, 04:20
Static task
static1
Behavioral task
behavioral1
Sample
5a438591b5746bfdc8bd6383d75d0db8.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
5a438591b5746bfdc8bd6383d75d0db8.exe
Resource
win10v2004-20231222-en
General
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Target
5a438591b5746bfdc8bd6383d75d0db8.exe
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Size
896KB
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MD5
5a438591b5746bfdc8bd6383d75d0db8
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SHA1
3650bd35145ac6b42a126177885f51a7687b57fc
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SHA256
16cd7a02ee8ff9c21989477b31a55e6fb4bf406142bc164f9e0556d4f57c8934
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SHA512
7d8336870f012c77ca2b75ad682a8c09cc5442c40d056e969e9d8d3bcb04461ff613f89e164f4288631268d7be1c8792bfe1160a9291bdef6e36eaf35f6cb4cc
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SSDEEP
12288:yYNfqsvkQsFvtxcCZeGsU71YmV1sl5h3/vKHUqXV7S+4dkJ0utF3Z4mxxTUn00yV:zbvs/x/AAHqlDxqXI60utQmXT2dy5QkT
Malware Config
Signatures
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resource yara_rule behavioral2/files/0x000800000002320a-58.dat aspack_v212_v242 behavioral2/files/0x000800000002320a-57.dat aspack_v212_v242 -
Executes dropped EXE 1 IoCs
pid Process 3952 HKFXOK.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\"" 5a438591b5746bfdc8bd6383d75d0db8.exe -
Program crash 3 IoCs
pid pid_target Process procid_target 2072 3952 WerFault.exe 752 3952 WerFault.exe 94 5004 3952 WerFault.exe 94 -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3696 wrote to memory of 3952 3696 5a438591b5746bfdc8bd6383d75d0db8.exe 94 PID 3696 wrote to memory of 3952 3696 5a438591b5746bfdc8bd6383d75d0db8.exe 94 PID 3696 wrote to memory of 3952 3696 5a438591b5746bfdc8bd6383d75d0db8.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\5a438591b5746bfdc8bd6383d75d0db8.exe"C:\Users\Admin\AppData\Local\Temp\5a438591b5746bfdc8bd6383d75d0db8.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3696 -
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\HKFXOK.exeC:\Users\Admin\AppData\Local\Temp\IXP000.TMP\HKFXOK.exe2⤵
- Executes dropped EXE
PID:3952 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3952 -s 2643⤵
- Program crash
PID:752
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3952 -s 2443⤵
- Program crash
PID:5004
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3952 -ip 39521⤵PID:4520
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3952 -s 2241⤵
- Program crash
PID:2072
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3952 -ip 39521⤵PID:1632
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3952 -ip 39521⤵PID:3552
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
145KB
MD5980b70ad12454302d0879fdb9824b215
SHA1a9be539820a331fc894fcb79b65dffd099bb3c75
SHA2568384cfdf24e385e75deab33c3e9d82c4e100ad737abcc13e1688bef5f55df93d
SHA5129d21f0bb5a545faf14a4176a79070fc472f14554b149406453a5c5bf5e4615ee5aad1dbe23a97172d5597dab7a96c6e153180ee4faf06259caadcbff99323663
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Filesize
93KB
MD584abd684cb26f8ac1fd2a5d7c05d387c
SHA1d34db479dc81cf3992f4413384c253252a1f207b
SHA2562c9db483abdaa7f4429add87303e0eb9389ee233e52b5847166494e3f3ee0fdc
SHA5128719d6efa482a78cf395658ec1af45c53e04a3f35ae160d7b05e97da36a39d3f9a9522f7c07c6871b625765d39fa751440c5f6e1115df3be751c1d229ea8810e