dridex | d49f5b9b3da2c5ae18f28c40d008544337ba6e5febd76a8c88619079d0c262ca

Analysis

max time kernel
120s
max time network
119s
platform
windows7_x64
resource
win7v20201028
submitted
18-11-2020 12:31

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General

Target

mdhnt.dll
Size

539KB
MD5

fc8998b5afaa9a1d1c6f1eaf8641a967
SHA1

db53da2690b86741ddd7837a974bd31cb063270e
SHA256

d49f5b9b3da2c5ae18f28c40d008544337ba6e5febd76a8c88619079d0c262ca
SHA512

89e3d4e2ba2054d737b118d4ad7772afeb26a407b5ec010a1cf1429e162a11eccfd8e6f2289c6efa9920932d49dee14f099966175138b3623b29e073bdb07081

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

162.241.44.26:9443

192.232.229.53:4443

77.220.64.34:443

193.90.12.121:3098

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral1/memory/1936-1-0x00000000003F0000-0x000000000042D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

3 1936 rundll32.exe
7 1936 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	1936	rundll32.exe
7	1936	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 240 wrote to memory of 1936	240	rundll32.exe	rundll32.exe
PID 240 wrote to memory of 1936	240	rundll32.exe	rundll32.exe
PID 240 wrote to memory of 1936	240	rundll32.exe	rundll32.exe
PID 240 wrote to memory of 1936	240	rundll32.exe	rundll32.exe
PID 240 wrote to memory of 1936	240	rundll32.exe	rundll32.exe
PID 240 wrote to memory of 1936	240	rundll32.exe	rundll32.exe
PID 240 wrote to memory of 1936	240	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\mdhnt.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:240

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\mdhnt.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1936

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/1200-2-0x000007FEF6400000-0x000007FEF667A000-memory.dmp

Filesize
2.5MB

Download
memory/1936-0-0x0000000000000000-mapping.dmp

Download
memory/1936-1-0x00000000003F0000-0x000000000042D000-memory.dmp

Filesize
244KB

Download