Analysis
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max time kernel
133s -
max time network
224s -
platform
windows7_x64 -
resource
win7-20220718-en -
resource tags
arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system -
submitted
31-07-2022 05:06
Static task
static1
Behavioral task
behavioral1
Sample
blewthkht.dll
Resource
win7-20220718-en
windows7-x64
5 signatures
150 seconds
General
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Target
blewthkht.dll
-
Size
717KB
-
MD5
9d41e73e80b3e6633600d32940385577
-
SHA1
14f7941d13568db8f1f061a2d4de6db7eeaad394
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SHA256
cfcc473a5f83f83517a1c4917dd2c330be6252bc95fcf176e9b783fb694f6f31
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SHA512
2b035060971ac972040f59e012f58176fa0579ca9785913800c2963cb30e8794196d7726b45460b8bf7499878d0f175e8cb8f1b94c7ae05fe65eb8358cac3211
Malware Config
Extracted
Family
dridex
Botnet
10444
C2
97.107.127.161:443
45.33.94.33:5037
159.89.91.92:5037
158.69.118.130:1443
rc4.plain
rc4.plain
Signatures
-
Blocklisted process makes network request 2 IoCs
Processes:
rundll32.exeflow pid process 4 1088 rundll32.exe 5 1088 rundll32.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Processes:
rundll32.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
rundll32.exedescription pid process target process PID 600 wrote to memory of 1088 600 rundll32.exe rundll32.exe PID 600 wrote to memory of 1088 600 rundll32.exe rundll32.exe PID 600 wrote to memory of 1088 600 rundll32.exe rundll32.exe PID 600 wrote to memory of 1088 600 rundll32.exe rundll32.exe PID 600 wrote to memory of 1088 600 rundll32.exe rundll32.exe PID 600 wrote to memory of 1088 600 rundll32.exe rundll32.exe PID 600 wrote to memory of 1088 600 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\blewthkht.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\blewthkht.dll,#12⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1088-54-0x0000000000000000-mapping.dmp
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memory/1088-55-0x0000000076681000-0x0000000076683000-memory.dmpFilesize
8KB
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memory/1088-57-0x0000000074D00000-0x0000000074DC6000-memory.dmpFilesize
792KB
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memory/1088-56-0x0000000074D00000-0x0000000074D3D000-memory.dmpFilesize
244KB
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memory/1088-59-0x0000000074D00000-0x0000000074DC6000-memory.dmpFilesize
792KB
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memory/1088-60-0x0000000074D00000-0x0000000074DC6000-memory.dmpFilesize
792KB