dridex | 8f1172ce8d65d23f1db2c6d012ab5268eed0a5db158253be1da396aedc8af5e9

Analysis

max time kernel
26s
max time network
135s
platform
windows10_x64
resource
win10v20201028
submitted
03-03-2021 19:05

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General

Target

8f1172ce8d65d23f1db2c6d012ab5268eed0a5db158253be1da396aedc8af5e9.dll
Size

188KB
MD5

3b83f8722306f694e7e33574e99dedb8
SHA1

2888cb0d355bcdf6e48c78323649cf205369258d
SHA256

8f1172ce8d65d23f1db2c6d012ab5268eed0a5db158253be1da396aedc8af5e9
SHA512

f8f4cf3e12ddf813414b5ac4a2569f55e753509fca8a449825ea2cf5627e7e6bec04b5d5f428340e34b091b0945a5eeed6c5caba0f669e99000f401744532edb

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

116.251.211.158:443

216.10.242.142:6601

37.247.35.137:6601

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/1244-3-0x0000000074110000-0x0000000074141000-memory.dmp	dridex_ldr
behavioral2/memory/1244-5-0x0000000074110000-0x000000007412F000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

15 1244 rundll32.exe
17 1244 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
15	1244	rundll32.exe
17	1244	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 1232 wrote to memory of 1244	1232	rundll32.exe	rundll32.exe
PID 1232 wrote to memory of 1244	1232	rundll32.exe	rundll32.exe
PID 1232 wrote to memory of 1244	1232	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8f1172ce8d65d23f1db2c6d012ab5268eed0a5db158253be1da396aedc8af5e9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\8f1172ce8d65d23f1db2c6d012ab5268eed0a5db158253be1da396aedc8af5e9.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1244

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1244-2-0x0000000000000000-mapping.dmp

Download
memory/1244-3-0x0000000074110000-0x0000000074141000-memory.dmp

Filesize
196KB

Download
memory/1244-4-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/1244-5-0x0000000074110000-0x000000007412F000-memory.dmp

Filesize
124KB

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