dridex | 1f4d7b9217afd5254350c56788693bee5ecaa46b7f7c07354045826910dacb3c

Analysis

max time kernel
58s
max time network
110s
platform
windows10_x64
resource
win10v20201028
submitted
02-11-2020 18:16

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General

Target

bfe2mddol.dll
Size

752KB
MD5

fd3da0ce820ee753901011f520ecd2b1
SHA1

31c739f637c7588cd430c60566c2aea402f70a45
SHA256

1f4d7b9217afd5254350c56788693bee5ecaa46b7f7c07354045826910dacb3c
SHA512

267124d68055413495344847f8c068e9f90635407a17370f93ec1afae7b6a65c3f987e5acc84838b4a8b79c62c281341bd466027f377bc25e7cb52c6ded0a354

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

195.154.237.245:443

46.105.131.73:8172

91.238.160.158:18443

213.183.128.99:3786

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/4008-1-0x0000000004950000-0x000000000498D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

12 4008 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
12	4008	rundll32.exe

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

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 2868 wrote to memory of 4008	2868	rundll32.exe	rundll32.exe
PID 2868 wrote to memory of 4008	2868	rundll32.exe	rundll32.exe
PID 2868 wrote to memory of 4008	2868	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bfe2mddol.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2868

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bfe2mddol.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:4008

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/4008-0-0x0000000000000000-mapping.dmp

Download
memory/4008-1-0x0000000004950000-0x000000000498D000-memory.dmp

Filesize
244KB

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