Analysis
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max time kernel
134s -
max time network
105s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
26/05/2024, 10:31
Static task
static1
Behavioral task
behavioral1
Sample
b74fb1e2d98a6571996728e61309ea9ff7f74107798e9336190d8f08a1e43b91.dll
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
b74fb1e2d98a6571996728e61309ea9ff7f74107798e9336190d8f08a1e43b91.dll
Resource
win10v2004-20240426-en
General
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Target
b74fb1e2d98a6571996728e61309ea9ff7f74107798e9336190d8f08a1e43b91.dll
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Size
2.0MB
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MD5
91e79eb94adfd8eb06b9700fac3fe29e
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SHA1
40050fd16b571a2c13db055a2cf083194952f094
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SHA256
b74fb1e2d98a6571996728e61309ea9ff7f74107798e9336190d8f08a1e43b91
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SHA512
96e3981ce30c3a8d36afd4714be91c267933cf0a28a4344f4916bb80c7cee26e6554a40299a6bdedd38d6a6f08543a4766280c71f4d4f549154974beeda1c6ae
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SSDEEP
49152:iCdfr4mv+IzkEA3sG43+gtglo3b1kGbyS+xoI99FtA:iCdfr4mv+IzlZOgtDVMT7
Malware Config
Signatures
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Detect Blackmoon payload 1 IoCs
resource yara_rule behavioral2/memory/2392-1-0x0000000010000000-0x00000000103FE000-memory.dmp family_blackmoon -
Blocklisted process makes network request 1 IoCs
flow pid Process 6 2392 rundll32.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 rundll32.exe File opened for modification \??\PHYSICALDRIVE0 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2392 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4468 wrote to memory of 2392 4468 rundll32.exe 84 PID 4468 wrote to memory of 2392 4468 rundll32.exe 84 PID 4468 wrote to memory of 2392 4468 rundll32.exe 84
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b74fb1e2d98a6571996728e61309ea9ff7f74107798e9336190d8f08a1e43b91.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4468 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b74fb1e2d98a6571996728e61309ea9ff7f74107798e9336190d8f08a1e43b91.dll,#12⤵
- Blocklisted process makes network request
- Writes to the Master Boot Record (MBR)
- Suspicious use of AdjustPrivilegeToken
PID:2392
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