dridex | b4ff0a694c8b3bcca5558c9d8b77f4de890899dc7f1a56367d8530c97a810305

General

Target

b4ff0a694c8b3bcca5558c9d8b77f4de890899dc7f1a56367d8530c97a810305.dll
Size

196KB
MD5

6980060398c6c4037d4e5806c9ee64d1
SHA1

01e8fe828dfa438ff35ce1a7b0cc46d7ecd8efd7
SHA256

b4ff0a694c8b3bcca5558c9d8b77f4de890899dc7f1a56367d8530c97a810305
SHA512

e734bc7dc98d4505eac2b889bed3b25519efdf6ecdd53f30e849c5189de948277d9167fd6f2f794620a876faceda3209b15e80b25f445c7933ca6fa123886f69

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/1940-4-0x0000000075180000-0x00000000751B3000-memory.dmp	dridex_ldr
behavioral1/memory/1940-6-0x0000000075180000-0x000000007519F000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

4 1940 rundll32.exe
6 1940 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	1940	rundll32.exe
6	1940	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 1576 wrote to memory of 1940	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 1940	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 1940	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 1940	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 1940	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 1940	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 1940	1576	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b4ff0a694c8b3bcca5558c9d8b77f4de890899dc7f1a56367d8530c97a810305.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b4ff0a694c8b3bcca5558c9d8b77f4de890899dc7f1a56367d8530c97a810305.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1940

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/1416-7-0x000007FEF6780000-0x000007FEF69FA000-memory.dmp

Filesize
2.5MB

Download
memory/1940-3-0x0000000075A41000-0x0000000075A43000-memory.dmp

Filesize
8KB

Download
memory/1940-2-0x0000000000000000-mapping.dmp

Download
memory/1940-4-0x0000000075180000-0x00000000751B3000-memory.dmp

Filesize
204KB

Download
memory/1940-5-0x0000000000160000-0x0000000000166000-memory.dmp

Filesize
24KB

Download
memory/1940-6-0x0000000075180000-0x000000007519F000-memory.dmp

Filesize
124KB

Download

Analysis

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