Analysis
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max time kernel
93s -
max time network
101s -
platform
windows10-2004_x64 -
resource
win10v2004-20240730-en -
resource tags
arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system -
submitted
01-08-2024 21:29
Static task
static1
Behavioral task
behavioral1
Sample
0591cbff3a1ad937fac0aa2b7f1b0130N.exe
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
0591cbff3a1ad937fac0aa2b7f1b0130N.exe
Resource
win10v2004-20240730-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/crskc.dll
Resource
win7-20240729-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/crskc.dll
Resource
win10v2004-20240730-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/nsisunz.dll
Resource
win7-20240708-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/nsisunz.dll
Resource
win10v2004-20240730-en
General
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Target
$PLUGINSDIR/crskc.dll
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Size
152KB
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MD5
8b3ddcbee2387c4b3d0fe4a1f5582d62
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SHA1
53738258552c03338e3d6a5d09c83a509bddfbc7
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SHA256
e25e5be00d352a7e20d0bac376a5ce6f81081020c69e2d2c35f159d8a3d6faca
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SHA512
f8246cdc139af428fbf97423ac45972175587a5c0c4a5a6d65675f5f2605b7b9bd23fdc81aa6f8c298aa7ec1a41b877c6feb5dbdae4ec0376014af5f922dac72
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SSDEEP
3072:GKOFODlkA1BfNUwFQ6926Jo+OG/8sQyKJ5:CFmNQ69joLGdm
Malware Config
Signatures
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System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2876 wrote to memory of 2788 2876 rundll32.exe 83 PID 2876 wrote to memory of 2788 2876 rundll32.exe 83 PID 2876 wrote to memory of 2788 2876 rundll32.exe 83
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\crskc.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2876 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\crskc.dll,#12⤵
- System Location Discovery: System Language Discovery
PID:2788
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