dridex | 661f043e901c0ec7151745e977fc7cc438d979aaee85ce3dbd955b0d2d95d36e

Analysis

max time kernel
40s
max time network
43s
platform
windows7_x64
resource
win7-20220414-en
submitted
26-06-2022 05:17

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General

Target

a3et6u5dw.dll
Size

1.0MB
MD5

11ff45c66f3e348e6a917727bba8f5a3
SHA1

c283ad51b6fac72e7adfbeda17c7e40b8d58bda0
SHA256

661f043e901c0ec7151745e977fc7cc438d979aaee85ce3dbd955b0d2d95d36e
SHA512

76ae5f1a64f17feaeb718af3fdba906bbeac68e8063ac03facb59af31b8df4fc87c8daf6718d53010d8c97065250a1b31773fb229a445bf1f7fe3836217ef44a

Score

10^/10

dridex 10444 botnet discovery evasion trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

192.46.210.220:443

143.244.140.214:808

45.77.0.96:6891

185.56.219.47:8116

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex
Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

2 1912 rundll32.exe
4 1912 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
2	1912	rundll32.exe
4	1912	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 304 wrote to memory of 1912	304	rundll32.exe	rundll32.exe
PID 304 wrote to memory of 1912	304	rundll32.exe	rundll32.exe
PID 304 wrote to memory of 1912	304	rundll32.exe	rundll32.exe
PID 304 wrote to memory of 1912	304	rundll32.exe	rundll32.exe
PID 304 wrote to memory of 1912	304	rundll32.exe	rundll32.exe
PID 304 wrote to memory of 1912	304	rundll32.exe	rundll32.exe
PID 304 wrote to memory of 1912	304	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a3et6u5dw.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:304

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a3et6u5dw.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1912

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/1912-54-0x0000000000000000-mapping.dmp

Download
memory/1912-55-0x0000000075311000-0x0000000075313000-memory.dmp

Filesize
8KB

Download
memory/1912-56-0x0000000074820000-0x000000007493B000-memory.dmp

Filesize
1.1MB

Download
memory/1912-57-0x0000000074820000-0x000000007493B000-memory.dmp

Filesize
1.1MB

Download
memory/1912-59-0x0000000074820000-0x000000007493B000-memory.dmp

Filesize
1.1MB

Download
memory/1912-58-0x0000000074820000-0x000000007485D000-memory.dmp

Filesize
244KB

Download
memory/1912-61-0x0000000074820000-0x000000007493B000-memory.dmp

Filesize
1.1MB

Download