Analysis
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max time kernel
139s -
max time network
161s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
11-06-2022 16:34
Static task
static1
Behavioral task
behavioral1
Sample
fxses076.dll
Resource
win7-20220414-en
0 signatures
0 seconds
General
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Target
fxses076.dll
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Size
725KB
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MD5
aa7ad8fdea021577637b6e0520046686
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SHA1
f847d66c48d910ec01127d5e188ceaf4919d418f
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SHA256
7a77b516c563c8bbe904af3b90cfb89148b879b807aa34d93be3b1a2eb93a016
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SHA512
cd0744f471cbf9fa880ed16dc6d56a55a683f8d85fd5988f6532280c054200a8d83304a4e43d9801325925b81d4532d1cd25a5ec8c476159dc1c53049b9d5e9f
Malware Config
Extracted
Family
dridex
Botnet
10444
C2
146.164.126.197:443
69.16.193.166:9443
193.90.12.122:3098
157.245.103.132:14043
rc4.plain
rc4.plain
Signatures
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Processes:
resource yara_rule behavioral1/memory/1740-57-0x00000000007B0000-0x00000000007EA000-memory.dmp dridex_ldr_dmod behavioral1/memory/1740-58-0x00000000007B0000-0x00000000007EA000-memory.dmp dridex_ldr_dmod -
Blocklisted process makes network request 3 IoCs
Processes:
rundll32.exeflow pid process 2 1740 rundll32.exe 4 1740 rundll32.exe 6 1740 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 1348 wrote to memory of 1740 1348 rundll32.exe rundll32.exe PID 1348 wrote to memory of 1740 1348 rundll32.exe rundll32.exe PID 1348 wrote to memory of 1740 1348 rundll32.exe rundll32.exe PID 1348 wrote to memory of 1740 1348 rundll32.exe rundll32.exe PID 1348 wrote to memory of 1740 1348 rundll32.exe rundll32.exe PID 1348 wrote to memory of 1740 1348 rundll32.exe rundll32.exe PID 1348 wrote to memory of 1740 1348 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\fxses076.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\fxses076.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/1740-54-0x0000000000000000-mapping.dmp
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memory/1740-55-0x0000000076531000-0x0000000076533000-memory.dmpFilesize
8KB
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memory/1740-56-0x0000000000200000-0x000000000024B000-memory.dmpFilesize
300KB
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memory/1740-57-0x00000000007B0000-0x00000000007EA000-memory.dmpFilesize
232KB
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memory/1740-58-0x00000000007B0000-0x00000000007EA000-memory.dmpFilesize
232KB