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Overview
overview
5Static
static
3AppvIsvSub...64.dll
windows7-x64
1AppvIsvSub...64.dll
windows10-2004-x64
3Mso20Win32Client.dll
windows7-x64
1Mso20Win32Client.dll
windows10-2004-x64
3e-yazi.doc... .exe
windows7-x64
1e-yazi.doc... .exe
windows10-2004-x64
5e-yazi.pdf
windows7-x64
1e-yazi.pdf
windows10-2004-x64
1Analysis
-
max time kernel
141s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
15/05/2023, 13:32
Static task
static1
Behavioral task
behavioral1
Sample
AppvIsvSubsystems64.dll
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
AppvIsvSubsystems64.dll
Resource
win10v2004-20230220-en
Behavioral task
behavioral3
Sample
Mso20Win32Client.dll
Resource
win7-20230220-en
Behavioral task
behavioral4
Sample
Mso20Win32Client.dll
Resource
win10v2004-20230220-en
Behavioral task
behavioral5
Sample
e-yazi.docx .exe
Resource
win7-20230220-en
Behavioral task
behavioral6
Sample
e-yazi.docx .exe
Resource
win10v2004-20230220-en
Behavioral task
behavioral7
Sample
e-yazi.pdf
Resource
win7-20230220-en
Behavioral task
behavioral8
Sample
e-yazi.pdf
Resource
win10v2004-20230220-en
General
-
Target
e-yazi.docx .exe
-
Size
1.6MB
-
MD5
b1820abc3a1ce2d32af04c18f9d2bfc3
-
SHA1
b260d80fa81885d63565773480ca1e436ab657a0
-
SHA256
6c55195f025fb895f9d0ec3edbf58bc0aa46c43eeb246cfb88eef1ae051171b3
-
SHA512
01085bd21fb6206b2af03cdef7490c73960d66a9c8a730436f9aa1fcb350063313ac06274ad6c63575410cd2b2ac64a6d33166fe5facc861926f762c0ca67924
-
SSDEEP
6144:ZmmDPbOztkAzkAZqrEdrEAZUCwFjNN1U:ZmmDgNPqrEdrEt
Malware Config
Signatures
-
Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
pid Process 1828 e-yazi.docx .exe 1828 e-yazi.docx .exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1828 set thread context of 2648 1828 e-yazi.docx .exe 59 PID 1828 set thread context of 2912 1828 e-yazi.docx .exe 57 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1828 e-yazi.docx .exe 1828 e-yazi.docx .exe
Processes
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C:\Windows\system32\taskhostw.exetaskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}1⤵PID:2912
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C:\Windows\system32\sihost.exesihost.exe1⤵PID:2648
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C:\Users\Admin\AppData\Local\Temp\e-yazi.docx .exe"C:\Users\Admin\AppData\Local\Temp\e-yazi.docx .exe"1⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
PID:1828
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD5c8acc7ebd0274710ad136e9ebbf77b30
SHA1d99222d014b6694013aca886e37094c480120566
SHA2565faffea9fd8c3fd5cccb9acb4fc3dcda1b50e9f69e382acb3e07c893918a53d5
SHA5128f030769ed0daa410468084783ec029e4a26697b8c684c18d270c459b84ca9b2359511540e37db2b35561893d72c314d273af066b623cbb3b49e7cd28ce2ecee
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize434B
MD5f40bd80ca954f629ecb52e7458d60ea8
SHA1ad8f128d5327aab6f53cd7646b93e6612a3ede0b
SHA25691497d0a5daee6bf2a6ef08306fc5f21d20f391c9b436ced736b60583406fd63
SHA512995ee317f529e607a2824db3c8dbeb1382bd33b555656db69b697c5026f993eb4da1650209ca1cb689d7fca568c546f434d192195de89f508f0059ba2eaf85d9