dridex | d3f4d352d63d7565acc222c50c0fccf56a7d90ad1623ae32e3a7f0e3b9ea5dfc

Analysis

max time kernel
45s
max time network
108s
platform
windows7_x64
resource
win7v20201028
submitted
20-02-2021 15:51

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General

Target

4e8b50459a8033a3e81008fe1e01df1997193d59f1012125325ee127281f387d.dll
Size

785KB
MD5

5cb98dc4e31e1e09b9ecf06a5fbc75f2
SHA1

4f8d8d02dbfbd65b7c24d46c0439ee245941470a
SHA256

4e8b50459a8033a3e81008fe1e01df1997193d59f1012125325ee127281f387d
SHA512

3a97dbed4172bdc59f505dc79fb67cf394eb2701c7ea2dc8778ebb97426f4bfb89031fc0667b3fe964f7b18e4561ce6e7aba840a412f654c24257bf7f9e30c6a

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

209.20.87.138:443

198.1.115.153:8172

151.236.29.248:6516

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
behavioral23/memory/1228-4-0x0000000075090000-0x00000000750CD000-memory.dmp	dridex_ldr
behavioral23/memory/1228-5-0x0000000075090000-0x00000000750CD000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

4 1228 rundll32.exe
7 1228 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	1228	rundll32.exe
7	1228	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 1856 wrote to memory of 1228	1856	rundll32.exe	rundll32.exe
PID 1856 wrote to memory of 1228	1856	rundll32.exe	rundll32.exe
PID 1856 wrote to memory of 1228	1856	rundll32.exe	rundll32.exe
PID 1856 wrote to memory of 1228	1856	rundll32.exe	rundll32.exe
PID 1856 wrote to memory of 1228	1856	rundll32.exe	rundll32.exe
PID 1856 wrote to memory of 1228	1856	rundll32.exe	rundll32.exe
PID 1856 wrote to memory of 1228	1856	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4e8b50459a8033a3e81008fe1e01df1997193d59f1012125325ee127281f387d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1856
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4e8b50459a8033a3e81008fe1e01df1997193d59f1012125325ee127281f387d.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1228

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/1228-2-0x0000000000000000-mapping.dmp

Download
memory/1228-3-0x00000000767E1000-0x00000000767E3000-memory.dmp

Filesize
8KB

Download
memory/1228-4-0x0000000075090000-0x00000000750CD000-memory.dmp

Filesize
244KB

Download
memory/1228-5-0x0000000075090000-0x00000000750CD000-memory.dmp

Filesize
244KB

Download
memory/1228-6-0x00000000000B0000-0x00000000000B1000-memory.dmp

Filesize
4KB

Download
memory/1604-7-0x000007FEF67C0000-0x000007FEF6A3A000-memory.dmp

Filesize
2.5MB

Download