Analysis
-
max time kernel
48s -
max time network
105s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
02-11-2020 16:45
Static task
static1
Behavioral task
behavioral1
Sample
yyvwjrxk.dll
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
General
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Target
yyvwjrxk.dll
-
Size
551KB
-
MD5
30a9282bf77aca1fcad347596364f456
-
SHA1
79a4c1db15260ab9912c59eef7c595ee5e5abf86
-
SHA256
75c73ab948e50702363e0eccbe49051b38807f3e78790a95bcae1cea4ae3bcbc
-
SHA512
254aa6bb60244ba5bb6210f8a1a84a52200c70cf91644c7db829ce206623d6b838e846efa95b57c2b41b7ce4ab630d4a8bbb2d6f2e46616d59e393b36e0a27b9
Malware Config
Extracted
Family
dridex
Botnet
10444
C2
195.154.237.245:443
46.105.131.73:8172
91.238.160.158:18443
213.183.128.99:3786
rc4.plain
rc4.plain
Signatures
-
Processes:
resource yara_rule behavioral2/memory/1372-1-0x00000000048D0000-0x000000000490D000-memory.dmp dridex_ldr -
Blocklisted process makes network request 1 IoCs
Processes:
rundll32.exeflow pid process 13 1372 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 1100 wrote to memory of 1372 1100 rundll32.exe rundll32.exe PID 1100 wrote to memory of 1372 1100 rundll32.exe rundll32.exe PID 1100 wrote to memory of 1372 1100 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\yyvwjrxk.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\yyvwjrxk.dll,#12⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled