dridex | c9ac5bb27067f557bfe685c0f56e7f0c2c14cc20bfbcb630561edc266ab27fd3

Analysis

max time kernel
31s
max time network
88s
platform
windows7_x64
resource
win7v20201028
submitted
31/03/2021, 16:22

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General

Target
c9ac5bb27067f557bfe685c0f56e7f0c2c14cc20bfbcb630561edc266ab27fd3.dll
Size 377KB
Sample210331-238hadmj4x
SHA256 c9ac5bb27067f557bfe685c0f56e7f0c2c14cc20bfbcb630561edc266ab27fd3
MD5 3ba43f3a814d900473772872da8457cf
SHA1 8ad0a29419205e7037bed528872eb164439215a0
SHA512 bfa746c7c43db972d47de4f0485a48612734fc3e1513c516e7d3b15d8e2072e9a24de367c22c94a0a8888e58a8ad750fe8a77349edc402bb15bafc50ab41e5f5
MD5 SHA1 SHA512

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

131.100.24.215:443
210.65.244.174:6601
195.201.199.53:2303

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

resource	yara_rule
behavioral1/memory/1672-4-0x0000000075260000-0x000000007529D000-memory.dmp	dridex_ldr
behavioral1/memory/1672-5-0x0000000075260000-0x000000007529D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

flow	pid	Process
4	1672	rundll32.exe
7	1672	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

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

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 1672	1724	rundll32.exe	26
PID 1724 wrote to memory of 1672	1724	rundll32.exe	26
PID 1724 wrote to memory of 1672	1724	rundll32.exe	26
PID 1724 wrote to memory of 1672	1724	rundll32.exe	26
PID 1724 wrote to memory of 1672	1724	rundll32.exe	26
PID 1724 wrote to memory of 1672	1724	rundll32.exe	26
PID 1724 wrote to memory of 1672	1724	rundll32.exe	26

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c9ac5bb27067f557bfe685c0f56e7f0c2c14cc20bfbcb630561edc266ab27fd3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c9ac5bb27067f557bfe685c0f56e7f0c2c14cc20bfbcb630561edc266ab27fd3.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1672

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

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Downloads

memory/1224-7-0x000007FEF7D90000-0x000007FEF800A000-memory.dmp

Download

memory/1672-3-0x00000000761E1000-0x00000000761E3000-memory.dmp

Download

memory/1672-4-0x0000000075260000-0x000000007529D000-memory.dmp

Download

memory/1672-5-0x0000000075260000-0x000000007529D000-memory.dmp

Download

memory/1672-6-0x00000000001B0000-0x00000000001B1000-memory.dmp

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads