dridex | 5a85a0cba2d2b88854a3bfaee6a9951529df817c6ef74340f6b03744415fe326

Analysis

max time kernel
50s
max time network
75s
platform
windows10_x64
resource
win10v20210408
submitted
19-04-2021 18:14

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General

Target

5a85a0cba2d2b88854a3bfaee6a9951529df817c6ef74340f6b03744415fe326.dll
Size

966KB
MD5

2d0077e893f6cf6dfebe4693e65715be
SHA1

55430f87cd8e91b29ce0d5f0a198fbab8149569d
SHA256

5a85a0cba2d2b88854a3bfaee6a9951529df817c6ef74340f6b03744415fe326
SHA512

15d3664e3ac7b61da7f652c3bae6e008a030fcd21f1c7d249e7c53ffd5dccb2e948ae4bd6ed3547ffb3a7298e5a45a135e9eae91679d7ce37a5d3fd0dc24fb43

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

146.185.170.249:443

62.75.251.60:6601

185.148.168.25:2303

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
behavioral1/memory/1124-116-0x0000000074220000-0x0000000074336000-memory.dmp	dridex_ldr
behavioral1/memory/1124-115-0x0000000074220000-0x000000007425D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

12 1124 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	1124	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 644 wrote to memory of 1124	644	rundll32.exe	rundll32.exe
PID 644 wrote to memory of 1124	644	rundll32.exe	rundll32.exe
PID 644 wrote to memory of 1124	644	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5a85a0cba2d2b88854a3bfaee6a9951529df817c6ef74340f6b03744415fe326.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:644

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5a85a0cba2d2b88854a3bfaee6a9951529df817c6ef74340f6b03744415fe326.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1124

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/1124-114-0x0000000000000000-mapping.dmp

Download
memory/1124-116-0x0000000074220000-0x0000000074336000-memory.dmp

Filesize
1.1MB

Download
memory/1124-115-0x0000000074220000-0x000000007425D000-memory.dmp

Filesize
244KB

Download
memory/1124-179-0x0000000000A20000-0x0000000000ACE000-memory.dmp

Filesize
696KB

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