dridex | 51fc19f8dd98ece514232b2db2f5fa918f279ec2209597d0c9a6f95ea9311663

Analysis

max time kernel
113s
max time network
146s
platform
windows7_x64
resource
win7-20220414-en
submitted
26-06-2022 05:35

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General

Target

gyzkwsmw6.dll
Size

381KB
MD5

0a93401ba77815b37c6301abdd7dc528
SHA1

23c162713424774e2c90a4468a12197c20df14b3
SHA256

51fc19f8dd98ece514232b2db2f5fa918f279ec2209597d0c9a6f95ea9311663
SHA512

6f6dd223d248eda6ae9dbb2f1024d750e73844315efb2cc6c52ba216c7dcded3c6d394787b6e10494edb9cf85af1b540120700e231ded808b6a473ea708bafb3

Score

10^/10

dridex 10444 botnet discovery evasion trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

131.100.24.215:443

210.65.244.174:6601

195.201.199.53:2303

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

3 1292 rundll32.exe
5 1292 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
3	1292	rundll32.exe
5	1292	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 1364 wrote to memory of 1292	1364	rundll32.exe	rundll32.exe
PID 1364 wrote to memory of 1292	1364	rundll32.exe	rundll32.exe
PID 1364 wrote to memory of 1292	1364	rundll32.exe	rundll32.exe
PID 1364 wrote to memory of 1292	1364	rundll32.exe	rundll32.exe
PID 1364 wrote to memory of 1292	1364	rundll32.exe	rundll32.exe
PID 1364 wrote to memory of 1292	1364	rundll32.exe	rundll32.exe
PID 1364 wrote to memory of 1292	1364	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\gyzkwsmw6.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1364

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\gyzkwsmw6.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1292

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/1292-54-0x0000000000000000-mapping.dmp

Download
memory/1292-55-0x0000000075501000-0x0000000075503000-memory.dmp

Filesize
8KB

Download
memory/1292-57-0x00000000746C0000-0x0000000074736000-memory.dmp

Filesize
472KB

Download
memory/1292-56-0x00000000746C0000-0x00000000746FD000-memory.dmp

Filesize
244KB

Download
memory/1292-59-0x00000000746C0000-0x0000000074736000-memory.dmp

Filesize
472KB

Download
memory/1292-60-0x00000000746C0000-0x0000000074736000-memory.dmp

Filesize
472KB

Download