dridex | ef3889c1d6626e8b8bcc04f981a5e4cad006b6b3a088f16b477b33070746bf6c

General

Target

ef3889c1d6626e8b8bcc04f981a5e4cad006b6b3a088f16b477b33070746bf6c.dll
Size

196KB
MD5

62098a4f3834aee27f4e837aac4e5268
SHA1

9d234884167cf7d64cf5ecf757d73487ed15ff0e
SHA256

ef3889c1d6626e8b8bcc04f981a5e4cad006b6b3a088f16b477b33070746bf6c
SHA512

a7e4cea1879d72a20ee3af93330767e6ff84776d16a39a47a1239c6ab4990a9981fdd919b45062db101ec6ac78848ac40a0f2fb278c77f8f2b60092004cd9e2c

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/1900-4-0x0000000075280000-0x00000000752B3000-memory.dmp	dridex_ldr
behavioral1/memory/1900-6-0x0000000075280000-0x000000007529F000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

5 1900 rundll32.exe
7 1900 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
5	1900	rundll32.exe
7	1900	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 1084 wrote to memory of 1900	1084	rundll32.exe	rundll32.exe
PID 1084 wrote to memory of 1900	1084	rundll32.exe	rundll32.exe
PID 1084 wrote to memory of 1900	1084	rundll32.exe	rundll32.exe
PID 1084 wrote to memory of 1900	1084	rundll32.exe	rundll32.exe
PID 1084 wrote to memory of 1900	1084	rundll32.exe	rundll32.exe
PID 1084 wrote to memory of 1900	1084	rundll32.exe	rundll32.exe
PID 1084 wrote to memory of 1900	1084	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef3889c1d6626e8b8bcc04f981a5e4cad006b6b3a088f16b477b33070746bf6c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1084

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef3889c1d6626e8b8bcc04f981a5e4cad006b6b3a088f16b477b33070746bf6c.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1900

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1536-7-0x000007FEF7E50000-0x000007FEF80CA000-memory.dmp

Filesize
2.5MB

Download
memory/1900-2-0x0000000000000000-mapping.dmp

Download
memory/1900-3-0x00000000767C1000-0x00000000767C3000-memory.dmp

Filesize
8KB

Download
memory/1900-4-0x0000000075280000-0x00000000752B3000-memory.dmp

Filesize
204KB

Download
memory/1900-5-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1900-6-0x0000000075280000-0x000000007529F000-memory.dmp

Filesize
124KB

Download

Analysis

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