dridex | 04b524d3cefa896a6d477f9af5c565c63a0bee272b17c8930cf700f3a8e2c846

Analysis

max time kernel
28s
max time network
86s
platform
windows7_x64
resource
win7v20201028
submitted
05/02/2021, 19:50

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General

Target
3ff34263c3346b450522d2a24fefd3b2.dll
Size 248KB
Sample210205-88chab5fns
SHA256 04b524d3cefa896a6d477f9af5c565c63a0bee272b17c8930cf700f3a8e2c846
MD5 3ff34263c3346b450522d2a24fefd3b2
SHA1 b78d708519f458490aa79800f5552e474cb30cf5
SHA512 dfc0ce85ad6719c578e012662de0ec8bc4e33ecec7e438ba3d3ae4a454cdce14fdd456a5fc618a235b9743fe3c327bfb7908c16e8bd203d52a17193b093c56fa
MD5 SHA1 SHA512

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

77.220.64.133:443
62.14.242.133:8443
192.241.175.242:691
212.129.24.85:34443

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

resource	yara_rule
behavioral1/memory/1828-4-0x0000000074F90000-0x0000000074FD0000-memory.dmp	dridex_ldr
behavioral1/memory/1828-6-0x0000000074F90000-0x0000000074FAF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

flow	pid	Process
5	1828	rundll32.exe
7	1828	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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 544 wrote to memory of 1828	544	rundll32.exe	25
PID 544 wrote to memory of 1828	544	rundll32.exe	25
PID 544 wrote to memory of 1828	544	rundll32.exe	25
PID 544 wrote to memory of 1828	544	rundll32.exe	25
PID 544 wrote to memory of 1828	544	rundll32.exe	25
PID 544 wrote to memory of 1828	544	rundll32.exe	25
PID 544 wrote to memory of 1828	544	rundll32.exe	25

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3ff34263c3346b450522d2a24fefd3b2.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:544
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3ff34263c3346b450522d2a24fefd3b2.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1828

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

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Downloads

memory/1556-7-0x000007FEF7EB0000-0x000007FEF812A000-memory.dmp

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memory/1828-3-0x0000000076881000-0x0000000076883000-memory.dmp

Download

memory/1828-4-0x0000000074F90000-0x0000000074FD0000-memory.dmp

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memory/1828-5-0x0000000000140000-0x0000000000146000-memory.dmp

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memory/1828-6-0x0000000074F90000-0x0000000074FAF000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads