dridex | a70b5e51937e8bb9a512f87d16745be785e3fc0b87f6a842cb2266ef043df4a2

Analysis

max time kernel
117s
max time network
142s
platform
windows10_x64
resource
win10v20201028
submitted
03-03-2021 19:05

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General

Target

a70b5e51937e8bb9a512f87d16745be785e3fc0b87f6a842cb2266ef043df4a2.dll
Size

188KB
MD5

ae5da20f4f221b17589dd6fc053fdc03
SHA1

5596c5e9eb87c1e1d7a48529bd56d9b2c576580c
SHA256

a70b5e51937e8bb9a512f87d16745be785e3fc0b87f6a842cb2266ef043df4a2
SHA512

2ce1751beea1481c942f6cb316cd9e42322e03cfd98b400b95d3ad5d95e59112fb34d45343856dec5cf284355cbf3b4babfaf7ce28139b52133d6edde0a057c8

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

116.251.211.158:443

216.10.242.142:6601

37.247.35.137:6601

rc4.plain

Signatures

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

Dridex Loader 2 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/1008-3-0x00000000743E0000-0x0000000074411000-memory.dmp	dridex_ldr
behavioral2/memory/1008-5-0x00000000743E0000-0x00000000743FF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

16 1008 rundll32.exe
18 1008 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
16	1008	rundll32.exe
18	1008	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 648 wrote to memory of 1008	648	rundll32.exe	rundll32.exe
PID 648 wrote to memory of 1008	648	rundll32.exe	rundll32.exe
PID 648 wrote to memory of 1008	648	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a70b5e51937e8bb9a512f87d16745be785e3fc0b87f6a842cb2266ef043df4a2.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:648

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a70b5e51937e8bb9a512f87d16745be785e3fc0b87f6a842cb2266ef043df4a2.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1008

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1008-2-0x0000000000000000-mapping.dmp

Download
memory/1008-3-0x00000000743E0000-0x0000000074411000-memory.dmp

Filesize
196KB

Download
memory/1008-4-0x0000000001150000-0x0000000001156000-memory.dmp

Filesize
24KB

Download
memory/1008-5-0x00000000743E0000-0x00000000743FF000-memory.dmp

Filesize
124KB

Download