Analysis
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max time kernel
75s -
max time network
136s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
11-06-2022 16:57
Static task
static1
Behavioral task
behavioral1
Sample
rkya3t.dll
Resource
win7-20220414-en
windows7_x64
0 signatures
0 seconds
General
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Target
rkya3t.dll
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Size
1.0MB
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MD5
2c7695cd3d9572390969b9453712a6d5
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SHA1
2e59bfd3617b75c10d05218c460340032ec87471
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SHA256
c9d0e573b96624c383b1c06d6f89d34040275280b8f621027a12b98eaf354086
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SHA512
e74f00deba5a73dee885b9757177dc2b72bbe5ec62ce88a66b3a4bc9896a4cf0f44483c1267d235d6ec52dd1150d575abb55acaf7751cb2913b113fc0e684992
Malware Config
Extracted
Family
dridex
Botnet
10444
C2
192.46.210.220:443
143.244.140.214:808
45.77.0.96:6891
185.56.219.47:8116
rc4.plain
rc4.plain
Signatures
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Blocklisted process makes network request 1 IoCs
Processes:
rundll32.exeflow pid process 19 3812 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 4828 wrote to memory of 3812 4828 rundll32.exe rundll32.exe PID 4828 wrote to memory of 3812 4828 rundll32.exe rundll32.exe PID 4828 wrote to memory of 3812 4828 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\rkya3t.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4828 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\rkya3t.dll,#12⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:3812
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/3812-130-0x0000000000000000-mapping.dmp
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memory/3812-131-0x0000000074CB0000-0x0000000074DCB000-memory.dmpFilesize
1.1MB
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memory/3812-132-0x0000000074CB0000-0x0000000074CED000-memory.dmpFilesize
244KB
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memory/3812-133-0x0000000074CB0000-0x0000000074DCB000-memory.dmpFilesize
1.1MB
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memory/3812-135-0x0000000074CB0000-0x0000000074DCB000-memory.dmpFilesize
1.1MB
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memory/3812-136-0x0000000074CB0000-0x0000000074DCB000-memory.dmpFilesize
1.1MB