dridex | c46eb850f9920336b99f11049f6c3c018a08ccdb75d3fb5ee7c1ecc08fc779b4

General

Target

c46eb850f9920336b99f11049f6c3c018a08ccdb75d3fb5ee7c1ecc08fc779b4.dll
Size

196KB
MD5

9757f74735004a2338226799a7fefe25
SHA1

57b95c655bd8a3cba07fc10dfeaded2f2456d9b5
SHA256

c46eb850f9920336b99f11049f6c3c018a08ccdb75d3fb5ee7c1ecc08fc779b4
SHA512

d4a2c0ae2abcd41dd56959a7ffd2f62eb45f4ef725ee37d1d1a9d351fcd67c9ec20e4b2976591d657afabe9000e16991b916ede2cf3965e3d6aa09569163b6f6

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

C2

37.247.35.132:443

50.243.30.51:6601

162.241.204.234:6516

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/2040-4-0x0000000074750000-0x0000000074783000-memory.dmp	dridex_ldr
behavioral1/memory/2040-6-0x0000000074750000-0x000000007476F000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

4 2040 rundll32.exe
7 2040 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
4	2040	rundll32.exe
7	2040	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 1832 wrote to memory of 2040	1832	rundll32.exe	rundll32.exe
PID 1832 wrote to memory of 2040	1832	rundll32.exe	rundll32.exe
PID 1832 wrote to memory of 2040	1832	rundll32.exe	rundll32.exe
PID 1832 wrote to memory of 2040	1832	rundll32.exe	rundll32.exe
PID 1832 wrote to memory of 2040	1832	rundll32.exe	rundll32.exe
PID 1832 wrote to memory of 2040	1832	rundll32.exe	rundll32.exe
PID 1832 wrote to memory of 2040	1832	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c46eb850f9920336b99f11049f6c3c018a08ccdb75d3fb5ee7c1ecc08fc779b4.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1832
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c46eb850f9920336b99f11049f6c3c018a08ccdb75d3fb5ee7c1ecc08fc779b4.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:2040

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/284-7-0x000007FEF5D50000-0x000007FEF5FCA000-memory.dmp

Filesize
2.5MB

Download
memory/2040-2-0x0000000000000000-mapping.dmp

Download
memory/2040-3-0x0000000075DE1000-0x0000000075DE3000-memory.dmp

Filesize
8KB

Download
memory/2040-4-0x0000000074750000-0x0000000074783000-memory.dmp

Filesize
204KB

Download
memory/2040-5-0x0000000000120000-0x0000000000126000-memory.dmp

Filesize
24KB

Download
memory/2040-6-0x0000000074750000-0x000000007476F000-memory.dmp

Filesize
124KB

Download

Analysis

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