dridex | 1b3b31ac5700ab49d65a7bcf7d95b9028f7c322a0fa0f2af8670cfec552cdab6

General

Target

1b3b31ac5700ab49d65a7bcf7d95b9028f7c322a0fa0f2af8670cfec552cdab6.dll
Size

188KB
MD5

f333d3fe94acc137e9276ef387e8e685
SHA1

2b7fe094e4741fb347b64b4467666528fc4d0c4d
SHA256

1b3b31ac5700ab49d65a7bcf7d95b9028f7c322a0fa0f2af8670cfec552cdab6
SHA512

210668924d392ca45d67c13f1f11e12cadb497309602908d222824a76a49d706368bd1001d975b6441e7185cc3282b1d1cf05b20056e77704b64b19bc5c5a312

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

C2

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
behavioral1/memory/1816-4-0x0000000074CC0000-0x0000000074CF1000-memory.dmp	dridex_ldr
behavioral1/memory/1816-6-0x0000000074CC0000-0x0000000074CDF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

7 1816 rundll32.exe
9 1816 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
7	1816	rundll32.exe
9	1816	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 744 wrote to memory of 1816	744	rundll32.exe	rundll32.exe
PID 744 wrote to memory of 1816	744	rundll32.exe	rundll32.exe
PID 744 wrote to memory of 1816	744	rundll32.exe	rundll32.exe
PID 744 wrote to memory of 1816	744	rundll32.exe	rundll32.exe
PID 744 wrote to memory of 1816	744	rundll32.exe	rundll32.exe
PID 744 wrote to memory of 1816	744	rundll32.exe	rundll32.exe
PID 744 wrote to memory of 1816	744	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1b3b31ac5700ab49d65a7bcf7d95b9028f7c322a0fa0f2af8670cfec552cdab6.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:744
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\1b3b31ac5700ab49d65a7bcf7d95b9028f7c322a0fa0f2af8670cfec552cdab6.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1816

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/1412-7-0x000007FEF61C0000-0x000007FEF643A000-memory.dmp

Filesize
2.5MB

Download
memory/1816-2-0x0000000000000000-mapping.dmp

Download
memory/1816-3-0x0000000075E51000-0x0000000075E53000-memory.dmp

Filesize
8KB

Download
memory/1816-4-0x0000000074CC0000-0x0000000074CF1000-memory.dmp

Filesize
196KB

Download
memory/1816-5-0x0000000000180000-0x0000000000186000-memory.dmp

Filesize
24KB

Download
memory/1816-6-0x0000000074CC0000-0x0000000074CDF000-memory.dmp

Filesize
124KB

Download

Analysis

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