dridex | fd6f6c377f403f5faccf5c4bb03a0d5af94f7f57ac13572a42b187cdbda027cc

Analysis

max time kernel
62s
max time network
70s
platform
windows10_x64
resource
win10v20201028
submitted
16-11-2020 16:18

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General

Target

aejmelvv.dll
Size

520KB
MD5

a19e9a48a5adb409f2eed82694231a7a
SHA1

ff50e4396399178914c64653f33617a7c4f6df61
SHA256

fd6f6c377f403f5faccf5c4bb03a0d5af94f7f57ac13572a42b187cdbda027cc
SHA512

763bb2799be8a6698362ccf928f552d4faaaf086550e640aeebd7522b304c58f7dc9d68898fe53a8a1bd4db3cfac310019d9bcc2794d0f0c1fadd0abea90841f

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

77.220.64.53:443

172.96.190.154:4664

209.126.111.137:33443

167.99.158.82:33443

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/4748-1-0x0000000010000000-0x000000001003D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

12 4748 rundll32.exe
14 4748 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
12	4748	rundll32.exe
14	4748	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 4684 wrote to memory of 4748	4684	rundll32.exe	rundll32.exe
PID 4684 wrote to memory of 4748	4684	rundll32.exe	rundll32.exe
PID 4684 wrote to memory of 4748	4684	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aejmelvv.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4684

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aejmelvv.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:4748

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

Replay Monitor

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Downloads

memory/4748-0-0x0000000000000000-mapping.dmp

Download
memory/4748-1-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

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