dridex | d5291abf95712fc557498d75bdbdaca52a776598803735312d370f1f35a607bb

Analysis

max time kernel
33s
max time network
110s
platform
windows10_x64
resource
win10v20201028
submitted
03-03-2021 19:06

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General

Target

d5291abf95712fc557498d75bdbdaca52a776598803735312d370f1f35a607bb.dll
Size

188KB
MD5

5de079439c55d3b349e8dbe1e98ed92f
SHA1

6907ab4adec4aaf2b83f5ef420145b59d5003a5d
SHA256

d5291abf95712fc557498d75bdbdaca52a776598803735312d370f1f35a607bb
SHA512

df731b5ebdb108db2998b74528ff21edceea566dc30422f12dc2360ecaec301e80836780b0f8bde0b0063e2adf6aab245e0338287c0db3cff90b10e061120e9a

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/1576-3-0x00000000735C0000-0x00000000735F1000-memory.dmp	dridex_ldr
behavioral2/memory/1576-5-0x00000000735C0000-0x00000000735DF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

21 1576 rundll32.exe
23 1576 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
21	1576	rundll32.exe
23	1576	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 692 wrote to memory of 1576	692	rundll32.exe	rundll32.exe
PID 692 wrote to memory of 1576	692	rundll32.exe	rundll32.exe
PID 692 wrote to memory of 1576	692	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d5291abf95712fc557498d75bdbdaca52a776598803735312d370f1f35a607bb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:692

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d5291abf95712fc557498d75bdbdaca52a776598803735312d370f1f35a607bb.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1576

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/1576-2-0x0000000000000000-mapping.dmp

Download
memory/1576-3-0x00000000735C0000-0x00000000735F1000-memory.dmp

Filesize
196KB

Download
memory/1576-4-0x0000000000990000-0x0000000000996000-memory.dmp

Filesize
24KB

Download
memory/1576-5-0x00000000735C0000-0x00000000735DF000-memory.dmp

Filesize
124KB

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