dridex | c721d124999fe9388e49688994b3316a0b7c4735f96012a5efa20e1aabf87188

General

Target

84e3dfa5e65fcd9f9aa29b79a0ad4924.dll
Size

750KB
MD5

84e3dfa5e65fcd9f9aa29b79a0ad4924
SHA1

55cef822fb414878fce96b74328e7f6e214cb3f1
SHA256

c721d124999fe9388e49688994b3316a0b7c4735f96012a5efa20e1aabf87188
SHA512

b75894a067c495cdeb4b97e78f1d1b19566c7489bf1cf44117ccfe8ad97db363e4e79061118c231289cb523eef3eda6ea88a4aebcf0be239e101c2cdaddd7df1

Score

10^/10

dridex 10555 botnet discovery evasion trojan

Malware Config

Extracted

Family

dridex

Botnet

10555

C2

192.46.210.220:443

143.244.140.214:808

45.77.0.96:6891

185.56.219.47:8116

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex
Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

3 576 rundll32.exe
6 576 rundll32.exe
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

rundll32.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe

flow	pid	process
3	576	rundll32.exe
6	576	rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 740 wrote to memory of 576	740	rundll32.exe	rundll32.exe
PID 740 wrote to memory of 576	740	rundll32.exe	rundll32.exe
PID 740 wrote to memory of 576	740	rundll32.exe	rundll32.exe
PID 740 wrote to memory of 576	740	rundll32.exe	rundll32.exe
PID 740 wrote to memory of 576	740	rundll32.exe	rundll32.exe
PID 740 wrote to memory of 576	740	rundll32.exe	rundll32.exe
PID 740 wrote to memory of 576	740	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\84e3dfa5e65fcd9f9aa29b79a0ad4924.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:740

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\84e3dfa5e65fcd9f9aa29b79a0ad4924.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:576

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/576-55-0x0000000000000000-mapping.dmp

Download
memory/576-56-0x0000000075BA1000-0x0000000075BA3000-memory.dmp

Filesize
8KB

Download
memory/576-57-0x0000000075140000-0x0000000075209000-memory.dmp

Filesize
804KB

Download
memory/576-58-0x0000000075140000-0x000000007517D000-memory.dmp

Filesize
244KB

Download
memory/576-59-0x0000000075140000-0x0000000075209000-memory.dmp

Filesize
804KB

Download
memory/576-61-0x00000000000B0000-0x00000000000B1000-memory.dmp

Filesize
4KB

Download

Analysis

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