dridex | 713fc72c9fd79cbe6883bf4b9ab30d4a65ce1efac849b18c8a68da13202c5072

Analysis

max time kernel
109s
max time network
123s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-06-2022 23:44

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General

Target

yxknwc3j1.dll
Size

778KB
MD5

3d74f44ff0228d92a9531b42cdb13925
SHA1

7c53791bc2415deeb4a58c61f87b46ee24a5f08a
SHA256

713fc72c9fd79cbe6883bf4b9ab30d4a65ce1efac849b18c8a68da13202c5072
SHA512

78d7d93fbdb45735d43288122cea050898df01f77b58a11d9fbb3014c5d1ad4959d26c70452692880c8ecf40381dd2d8bb4a2ccca1ac06f1a3f87d5e2d5f09c8

Score

10^/10

dridex 10444 botnet discovery evasion trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

193.90.12.20:443

185.181.9.76:5037

175.207.13.56:5353

212.129.24.84:5037

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

3 852 rundll32.exe
5 852 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	852	rundll32.exe
5	852	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 756 wrote to memory of 852	756	rundll32.exe	rundll32.exe
PID 756 wrote to memory of 852	756	rundll32.exe	rundll32.exe
PID 756 wrote to memory of 852	756	rundll32.exe	rundll32.exe
PID 756 wrote to memory of 852	756	rundll32.exe	rundll32.exe
PID 756 wrote to memory of 852	756	rundll32.exe	rundll32.exe
PID 756 wrote to memory of 852	756	rundll32.exe	rundll32.exe
PID 756 wrote to memory of 852	756	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\yxknwc3j1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:756

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\yxknwc3j1.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:852

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/852-54-0x0000000000000000-mapping.dmp

Download
memory/852-55-0x0000000075941000-0x0000000075943000-memory.dmp

Filesize
8KB

Download
memory/852-57-0x00000000748E0000-0x00000000749B4000-memory.dmp

Filesize
848KB

Download
memory/852-56-0x00000000748E0000-0x000000007491D000-memory.dmp

Filesize
244KB

Download
memory/852-59-0x00000000748E0000-0x00000000749B4000-memory.dmp

Filesize
848KB

Download
memory/852-60-0x00000000748E0000-0x00000000749B4000-memory.dmp

Filesize
848KB

Download