Overview
overview
7Static
static
L2NPC/HFExt.dll
windows7-x64
1L2NPC/HFExt.dll
windows10-2004-x64
1L2NPC/L2NPC.exe
windows7-x64
3L2NPC/L2NPC.exe
windows10-2004-x64
3L2Server/GGauth70.dll
windows7-x64
3L2Server/GGauth70.dll
windows10-2004-x64
3L2Server/HFExt.dll
windows7-x64
1L2Server/HFExt.dll
windows10-2004-x64
1L2Server/L2Server.exe
windows7-x64
3L2Server/L2Server.exe
windows10-2004-x64
7L2Server/Loader.exe
windows7-x64
3L2Server/Loader.exe
windows10-2004-x64
1Analysis
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max time kernel
46s -
max time network
52s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
31-10-2022 05:03
Static task
static1
Behavioral task
behavioral1
Sample
L2NPC/HFExt.dll
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
L2NPC/HFExt.dll
Resource
win10v2004-20220812-en
Behavioral task
behavioral3
Sample
L2NPC/L2NPC.exe
Resource
win7-20220812-en
Behavioral task
behavioral4
Sample
L2NPC/L2NPC.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral5
Sample
L2Server/GGauth70.dll
Resource
win7-20220812-en
Behavioral task
behavioral6
Sample
L2Server/GGauth70.dll
Resource
win10v2004-20220812-en
Behavioral task
behavioral7
Sample
L2Server/HFExt.dll
Resource
win7-20220812-en
Behavioral task
behavioral8
Sample
L2Server/HFExt.dll
Resource
win10v2004-20220812-en
Behavioral task
behavioral9
Sample
L2Server/L2Server.exe
Resource
win7-20220901-en
Behavioral task
behavioral10
Sample
L2Server/L2Server.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral11
Sample
L2Server/Loader.exe
Resource
win7-20220812-en
Behavioral task
behavioral12
Sample
L2Server/Loader.exe
Resource
win10v2004-20220812-en
General
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Target
L2Server/L2Server.exe
-
Size
12.6MB
-
MD5
8235a379be7a063b9d90a38e276cbb30
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SHA1
b6174fc0b2de1aecb09c12fc73e9369e5a5b95c5
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SHA256
203e3300d1e76dbc45e0c0e1b5d0e0388e1143924333398954016c6003b45511
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SHA512
3f30fb08ee92a73a3a19dc22c3440b2afef2a5babc735dfdea04021180440b5baaf444d975c9bae502c73fe823ce9d0f419dd71ffdc9960f655071130e3152c3
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SSDEEP
98304:FayXbXfSoVXB8H7cyxOhtwTN2EBLBYFZpECfzIKOQG8GHk91bBqnA4WgX32daeH3:FlXbPDVXB27cXtwTN2EFBIFzIRQLmeH3
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1380 wrote to memory of 1232 1380 L2Server.exe 27 PID 1380 wrote to memory of 1232 1380 L2Server.exe 27 PID 1380 wrote to memory of 1232 1380 L2Server.exe 27 PID 1380 wrote to memory of 980 1380 L2Server.exe 29 PID 1380 wrote to memory of 980 1380 L2Server.exe 29 PID 1380 wrote to memory of 980 1380 L2Server.exe 29 PID 1380 wrote to memory of 908 1380 L2Server.exe 31 PID 1380 wrote to memory of 908 1380 L2Server.exe 31 PID 1380 wrote to memory of 908 1380 L2Server.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\L2Server\L2Server.exe"C:\Users\Admin\AppData\Local\Temp\L2Server\L2Server.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1380 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir bak2⤵PID:1232
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C move LinError.txt.*.bak bak\2⤵PID:980
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C move minidump_*.dmp bak\2⤵PID:908
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