dridex | 3d835529c2436b903f6b14c640f3eae74eedcfe8e7a51641a9184fce4e470a0c

Analysis

max time kernel
22s
max time network
118s
platform
windows10_x64
resource
win10v20201028
submitted
04-03-2021 18:24

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General

Target

3d835529c2436b903f6b14c640f3eae74eedcfe8e7a51641a9184fce4e470a0c.dll
Size

196KB
MD5

a20ebf180e8ba3d3901f7348899ea2bc
SHA1

412782d6fe2c87e48a0712031c2915066ab03b3d
SHA256

3d835529c2436b903f6b14c640f3eae74eedcfe8e7a51641a9184fce4e470a0c
SHA512

d9d13cd077b27ed53113509f3b555ad40e9f1b6eae0d014c58e515aa645aaba99e28ee96b884aee66333918c353da1e0e05d0f1b6f4485bd2f3f1e7c4d09c6d4

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

37.247.35.132:443

50.243.30.51:6601

162.241.204.234:6516

rc4.plain

Signatures

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

Dridex Loader 2 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/4784-3-0x00000000737D0000-0x0000000073803000-memory.dmp	dridex_ldr
behavioral2/memory/4784-5-0x00000000737D0000-0x00000000737EF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

17 4784 rundll32.exe
19 4784 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
17	4784	rundll32.exe
19	4784	rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 4768 wrote to memory of 4784	4768	rundll32.exe	rundll32.exe
PID 4768 wrote to memory of 4784	4768	rundll32.exe	rundll32.exe
PID 4768 wrote to memory of 4784	4768	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3d835529c2436b903f6b14c640f3eae74eedcfe8e7a51641a9184fce4e470a0c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4768

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3d835529c2436b903f6b14c640f3eae74eedcfe8e7a51641a9184fce4e470a0c.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:4784

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/4784-2-0x0000000000000000-mapping.dmp

Download
memory/4784-3-0x00000000737D0000-0x0000000073803000-memory.dmp

Filesize
204KB

Download
memory/4784-4-0x00000000008B0000-0x00000000008B6000-memory.dmp

Filesize
24KB

Download
memory/4784-5-0x00000000737D0000-0x00000000737EF000-memory.dmp

Filesize
124KB

Download