dridex | bd37232c2ec9e70b50f0cfee7260cb84c311ba2dbd8e789cfac3bc229b1b6ea0

Analysis

max time kernel
25s
max time network
136s
platform
windows10_x64
resource
win10v20201028
submitted
03-03-2021 19:06

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General

Target

bd37232c2ec9e70b50f0cfee7260cb84c311ba2dbd8e789cfac3bc229b1b6ea0.dll
Size

188KB
MD5

11a01926899f14d0949405c71b0f6146
SHA1

d075ad0c7cc871d40aca2bf1fa6db034547ced3a
SHA256

bd37232c2ec9e70b50f0cfee7260cb84c311ba2dbd8e789cfac3bc229b1b6ea0
SHA512

675928d88feac1780182fdc45cb9e35f002a1787d0aa93b7b5f93e675ffad55ef4fd0ae7a189a14ad5cbc1017735150698649534ed6f2300577834cc9945e9b4

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/4792-3-0x00000000737C0000-0x00000000737F1000-memory.dmp	dridex_ldr
behavioral2/memory/4792-5-0x00000000737C0000-0x00000000737DF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

15 4792 rundll32.exe
17 4792 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
15	4792	rundll32.exe
17	4792	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 4776 wrote to memory of 4792	4776	rundll32.exe	rundll32.exe
PID 4776 wrote to memory of 4792	4776	rundll32.exe	rundll32.exe
PID 4776 wrote to memory of 4792	4776	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bd37232c2ec9e70b50f0cfee7260cb84c311ba2dbd8e789cfac3bc229b1b6ea0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4776
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\bd37232c2ec9e70b50f0cfee7260cb84c311ba2dbd8e789cfac3bc229b1b6ea0.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:4792

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/4792-2-0x0000000000000000-mapping.dmp

Download
memory/4792-3-0x00000000737C0000-0x00000000737F1000-memory.dmp

Filesize
196KB

Download
memory/4792-4-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4792-5-0x00000000737C0000-0x00000000737DF000-memory.dmp

Filesize
124KB

Download