dridex | cdc5efe20effa5b76eb7374caf88734f1566dc44084d0fe9e166c6853adc0474

Analysis

max time kernel
50s
max time network
115s
platform
windows10_x64
resource
win10v20201028
submitted
17-11-2020 15:45

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General

Target

cb19fe63b301713587e7bdddec6a50f7.dll
Size

528KB
MD5

d05f75fe7219a64d04871dbf1d9f5b00
SHA1

b17e5249c3e10b51e6baab674389e85808083437
SHA256

cdc5efe20effa5b76eb7374caf88734f1566dc44084d0fe9e166c6853adc0474
SHA512

c6965e3b40c4345f6efa2bd0c063c4f4aae291736d6c987e0a33a53331fe350aac9b2de6ae01001ccc14726bf79f22bb7fccb675639d5473ca67ca7432a58653

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

77.220.64.39:443

69.164.207.140:3388

78.47.139.43:4443

103.244.206.74:33443

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/4872-1-0x0000000010000000-0x000000001003D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

17 4872 rundll32.exe
18 4872 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
17	4872	rundll32.exe
18	4872	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 4640 wrote to memory of 4872	4640	rundll32.exe	rundll32.exe
PID 4640 wrote to memory of 4872	4640	rundll32.exe	rundll32.exe
PID 4640 wrote to memory of 4872	4640	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\cb19fe63b301713587e7bdddec6a50f7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4640

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\cb19fe63b301713587e7bdddec6a50f7.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:4872

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/4872-0-0x0000000000000000-mapping.dmp

Download
memory/4872-1-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

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