Analysis
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max time kernel
30s -
max time network
110s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
04-03-2021 20:13
Static task
static1
Behavioral task
behavioral1
Sample
a1b14e952a770dafb8ce9f50a3384a7da61e0ee0281aa7340680c14eecbc7793.dll
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
General
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Target
a1b14e952a770dafb8ce9f50a3384a7da61e0ee0281aa7340680c14eecbc7793.dll
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Size
196KB
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MD5
5b47ae2be46b08d04796ffa7d8ae732e
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SHA1
830f3f929afb0bf26c21d4d04c5a635bf0361321
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SHA256
a1b14e952a770dafb8ce9f50a3384a7da61e0ee0281aa7340680c14eecbc7793
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SHA512
8c0be95b92cd314abe03ea5247d990d537397bb6ba76f99cd4680b2639cdef54c8a1ab8c4b49adee3247a11100c43ea0cfd11b10ff70bae440a0b64e32e46e1b
Malware Config
Extracted
Family
dridex
Botnet
111
C2
37.247.35.132:443
50.243.30.51:6601
162.241.204.234:6516
rc4.plain
rc4.plain
Signatures
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Processes:
resource yara_rule behavioral2/memory/748-3-0x0000000074000000-0x0000000074033000-memory.dmp dridex_ldr behavioral2/memory/748-5-0x0000000074000000-0x000000007401F000-memory.dmp dridex_ldr -
Blocklisted process makes network request 2 IoCs
Processes:
rundll32.exeflow pid process 15 748 rundll32.exe 17 748 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 3 IoCs
Processes:
rundll32.exedescription pid process target process PID 3636 wrote to memory of 748 3636 rundll32.exe rundll32.exe PID 3636 wrote to memory of 748 3636 rundll32.exe rundll32.exe PID 3636 wrote to memory of 748 3636 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\a1b14e952a770dafb8ce9f50a3384a7da61e0ee0281aa7340680c14eecbc7793.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\a1b14e952a770dafb8ce9f50a3384a7da61e0ee0281aa7340680c14eecbc7793.dll,#12⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/748-2-0x0000000000000000-mapping.dmp
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memory/748-3-0x0000000074000000-0x0000000074033000-memory.dmpFilesize
204KB
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memory/748-4-0x0000000001130000-0x0000000001136000-memory.dmpFilesize
24KB
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memory/748-5-0x0000000074000000-0x000000007401F000-memory.dmpFilesize
124KB