Overview
overview
7Static
static
3FLEXER (2).rar
windows7-x64
3FLEXER (2).rar
windows10-2004-x64
3beep.wav
windows7-x64
1beep.wav
windows10-2004-x64
6bin/API.dll
windows7-x64
1bin/API.dll
windows10-2004-x64
1main.exe
windows7-x64
7main.exe
windows10-2004-x64
7success.wav
windows7-x64
1success.wav
windows10-2004-x64
6workspace/...le.txt
windows7-x64
1workspace/...le.txt
windows10-2004-x64
1workspace/...et.txt
windows7-x64
1workspace/...et.txt
windows10-2004-x64
1workspace/...le.txt
windows7-x64
1workspace/...le.txt
windows10-2004-x64
1workspace/..._1.txt
windows7-x64
1workspace/..._1.txt
windows10-2004-x64
1workspace/..._2.txt
windows7-x64
1workspace/..._2.txt
windows10-2004-x64
1workspace/...le.txt
windows7-x64
1workspace/...le.txt
windows10-2004-x64
1workspace/...tefile
windows7-x64
1workspace/...tefile
windows10-2004-x64
1workspace/...le.txt
windows7-x64
1workspace/...le.txt
windows10-2004-x64
1Analysis
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max time kernel
143s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
12/08/2024, 12:35
Static task
static1
Behavioral task
behavioral1
Sample
FLEXER (2).rar
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
FLEXER (2).rar
Resource
win10v2004-20240802-en
Behavioral task
behavioral3
Sample
beep.wav
Resource
win7-20240708-en
Behavioral task
behavioral4
Sample
beep.wav
Resource
win10v2004-20240802-en
Behavioral task
behavioral5
Sample
bin/API.dll
Resource
win7-20240704-en
Behavioral task
behavioral6
Sample
bin/API.dll
Resource
win10v2004-20240802-en
Behavioral task
behavioral7
Sample
main.exe
Resource
win7-20240708-en
Behavioral task
behavioral8
Sample
main.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral9
Sample
success.wav
Resource
win7-20240705-en
Behavioral task
behavioral10
Sample
success.wav
Resource
win10v2004-20240802-en
Behavioral task
behavioral11
Sample
workspace/.tests/appendfile.txt
Resource
win7-20240704-en
Behavioral task
behavioral12
Sample
workspace/.tests/appendfile.txt
Resource
win10v2004-20240802-en
Behavioral task
behavioral13
Sample
workspace/.tests/getcustomasset.txt
Resource
win7-20240708-en
Behavioral task
behavioral14
Sample
workspace/.tests/getcustomasset.txt
Resource
win10v2004-20240802-en
Behavioral task
behavioral15
Sample
workspace/.tests/isfile.txt
Resource
win7-20240704-en
Behavioral task
behavioral16
Sample
workspace/.tests/isfile.txt
Resource
win10v2004-20240802-en
Behavioral task
behavioral17
Sample
workspace/.tests/listfiles/test_1.txt
Resource
win7-20240705-en
Behavioral task
behavioral18
Sample
workspace/.tests/listfiles/test_1.txt
Resource
win10v2004-20240802-en
Behavioral task
behavioral19
Sample
workspace/.tests/listfiles/test_2.txt
Resource
win7-20240704-en
Behavioral task
behavioral20
Sample
workspace/.tests/listfiles/test_2.txt
Resource
win10v2004-20240802-en
Behavioral task
behavioral21
Sample
workspace/.tests/readfile.txt
Resource
win7-20240705-en
Behavioral task
behavioral22
Sample
workspace/.tests/readfile.txt
Resource
win10v2004-20240802-en
Behavioral task
behavioral23
Sample
workspace/.tests/writefile
Resource
win7-20240708-en
Behavioral task
behavioral24
Sample
workspace/.tests/writefile
Resource
win10v2004-20240802-en
Behavioral task
behavioral25
Sample
workspace/.tests/writefile.txt
Resource
win7-20240705-en
Behavioral task
behavioral26
Sample
workspace/.tests/writefile.txt
Resource
win10v2004-20240802-en
General
-
Target
FLEXER (2).rar
-
Size
26.4MB
-
MD5
38c051e78cacf0da51f6b4fffbc21311
-
SHA1
9ea3291065499f47d1493ee30b535d59a6ce2351
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SHA256
e8fe2bcaf0045e391f9c979a710605994d7d19e7ab072cc37afd58e06153d0d3
-
SHA512
f3d1142312a0f3d14e221cd12b5c258bd8431e1aff0e97334987d16607cf91183f6d045f69d7353aeec0ec16495f53cc79c88da756ff2ed1173cf6b77bd2d3b7
-
SSDEEP
786432:epFF4U63GqDiY2FPeH45d/YBxXiT3bW+FGgPf:epFF4U63ReFPeW/YBxWLW+FGgn
Malware Config
Signatures
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000_Classes\Local Settings rundll32.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1148 vlc.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1148 vlc.exe -
Suspicious use of FindShellTrayWindow 8 IoCs
pid Process 1148 vlc.exe 1148 vlc.exe 1148 vlc.exe 1148 vlc.exe 1148 vlc.exe 1148 vlc.exe 1148 vlc.exe 1148 vlc.exe -
Suspicious use of SendNotifyMessage 7 IoCs
pid Process 1148 vlc.exe 1148 vlc.exe 1148 vlc.exe 1148 vlc.exe 1148 vlc.exe 1148 vlc.exe 1148 vlc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1148 vlc.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1820 wrote to memory of 3060 1820 cmd.exe 31 PID 1820 wrote to memory of 3060 1820 cmd.exe 31 PID 1820 wrote to memory of 3060 1820 cmd.exe 31 PID 3060 wrote to memory of 2796 3060 rundll32.exe 33 PID 3060 wrote to memory of 2796 3060 rundll32.exe 33 PID 3060 wrote to memory of 2796 3060 rundll32.exe 33 PID 2796 wrote to memory of 1148 2796 rundll32.exe 35 PID 2796 wrote to memory of 1148 2796 rundll32.exe 35 PID 2796 wrote to memory of 1148 2796 rundll32.exe 35
Processes
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C:\Windows\system32\cmd.execmd /c "C:\Users\Admin\AppData\Local\Temp\FLEXER (2).rar"1⤵
- Suspicious use of WriteProcessMemory
PID:1820 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\FLEXER (2).rar2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3060 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\FLEXER (2).rar3⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2796 -
C:\Program Files\VideoLAN\VLC\vlc.exe"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\AppData\Local\Temp\FLEXER (2).rar"4⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:1148
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