dridex | c7f410926c4fe17c41e37d581b9d6908582eb821075ba7d4a20f58161ef154a7

Analysis

max time kernel
135s
max time network
150s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
31-07-2022 05:08

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General

Target

dcbl8fi.dll
Size

576KB
MD5

abf64911eb9dd3ca980ca660712567bd
SHA1

3465929617850b18d612f407e280af28cca72286
SHA256

c7f410926c4fe17c41e37d581b9d6908582eb821075ba7d4a20f58161ef154a7
SHA512

77a321b6b26a5f4a83c87cd56a27e185ac4d880240f6cf747e256898c023475af47cd66f121fbae0996063ad42676f731c8baee803eb41502a50d53b4bf1bc21

Score

10^/10

dridex 10444 botnet discovery evasion trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

77.220.64.131:443

5.196.204.251:5037

192.99.41.136:981

24.229.3.146:4664

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

3 892 rundll32.exe
5 892 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	892	rundll32.exe
5	892	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 1888 wrote to memory of 892	1888	rundll32.exe	rundll32.exe
PID 1888 wrote to memory of 892	1888	rundll32.exe	rundll32.exe
PID 1888 wrote to memory of 892	1888	rundll32.exe	rundll32.exe
PID 1888 wrote to memory of 892	1888	rundll32.exe	rundll32.exe
PID 1888 wrote to memory of 892	1888	rundll32.exe	rundll32.exe
PID 1888 wrote to memory of 892	1888	rundll32.exe	rundll32.exe
PID 1888 wrote to memory of 892	1888	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\dcbl8fi.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1888

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\dcbl8fi.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:892

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/892-54-0x0000000000000000-mapping.dmp

Download
memory/892-55-0x0000000075DC1000-0x0000000075DC3000-memory.dmp

Filesize
8KB

Download
memory/892-56-0x00000000002A0000-0x000000000033A000-memory.dmp

Filesize
616KB

Download
memory/892-57-0x00000000002A0000-0x00000000002DD000-memory.dmp

Filesize
244KB

Download
memory/892-58-0x00000000002A0000-0x000000000033A000-memory.dmp

Filesize
616KB

Download
memory/892-60-0x00000000002A0000-0x000000000033A000-memory.dmp

Filesize
616KB

Download
memory/892-61-0x00000000002A0000-0x000000000033A000-memory.dmp

Filesize
616KB

Download