dridex | 6f8610fc635355d0fb40184e38102c5ce90b18a0074ec60a64e7fda68f62cee8

Analysis

max time kernel
66s
max time network
113s
platform
windows7_x64
resource
win7-en-20210920
submitted
22-10-2021 19:23

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General

Target

j99zauz.jpg.dll
Size

608KB
MD5

857a3e7b09b2a270dd0b56aa43bc5fb2
SHA1

ef3316d9ed6ca70835061f4b3549fe8923629f5c
SHA256

6f8610fc635355d0fb40184e38102c5ce90b18a0074ec60a64e7fda68f62cee8
SHA512

c12cdaac12438408727d8224d81a313cce1178fdef206f80da03f41bd10bb8dbb54ecabd983d97d422ead95706b0d717696cd2dda6b900d0c7ecfa8a9db62c6d

Score

10^/10

dridex 10444 botnet discovery evasion trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

174.128.245.202:443

51.83.3.52:13786

69.64.50.41:6602

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 1384 rundll32.exe
6 1384 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	1384	rundll32.exe
6	1384	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 1600 wrote to memory of 1384	1600	rundll32.exe	rundll32.exe
PID 1600 wrote to memory of 1384	1600	rundll32.exe	rundll32.exe
PID 1600 wrote to memory of 1384	1600	rundll32.exe	rundll32.exe
PID 1600 wrote to memory of 1384	1600	rundll32.exe	rundll32.exe
PID 1600 wrote to memory of 1384	1600	rundll32.exe	rundll32.exe
PID 1600 wrote to memory of 1384	1600	rundll32.exe	rundll32.exe
PID 1600 wrote to memory of 1384	1600	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\j99zauz.jpg.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1600

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\j99zauz.jpg.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1384

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/1384-54-0x0000000000000000-mapping.dmp

Download
memory/1384-55-0x00000000767F1000-0x00000000767F3000-memory.dmp

Filesize
8KB

Download
memory/1384-56-0x0000000001CE0000-0x0000000001E14000-memory.dmp

Filesize
1.2MB

Download
memory/1384-58-0x0000000001CE0000-0x0000000001E14000-memory.dmp

Filesize
1.2MB

Download
memory/1384-59-0x0000000001CE0000-0x0000000001D1D000-memory.dmp

Filesize
244KB

Download
memory/1384-60-0x0000000001CE0000-0x0000000001E14000-memory.dmp

Filesize
1.2MB

Download
memory/1384-62-0x0000000000130000-0x0000000000131000-memory.dmp

Filesize
4KB

Download