dridex | ef2f56a3315360c36595dde8c121e8c3fbcdab622c9015a14499b2dc1ac7883f

Analysis

max time kernel
128s
max time network
139s
platform
windows10_x64
resource
win10v20201028
submitted
04-03-2021 09:04

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General

Target

ef2f56a3315360c36595dde8c121e8c3fbcdab622c9015a14499b2dc1ac7883f.dll
Size

196KB
MD5

f6d71e20487a04c6acf29f3545d961f7
SHA1

78887a52413e5922015d8557352df5a8117d8f3e
SHA256

ef2f56a3315360c36595dde8c121e8c3fbcdab622c9015a14499b2dc1ac7883f
SHA512

30845888fd6ff7d713ca70b134d0289546e4d4c639eab10d05e45d99a292ac58c91f8c6bffd7c3468fcd5ce8138250062388aad0a0b8ae52565833b54f67ffb6

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/364-3-0x0000000073CA0000-0x0000000073CD3000-memory.dmp	dridex_ldr
behavioral2/memory/364-5-0x0000000073CA0000-0x0000000073CBF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

16 364 rundll32.exe
18 364 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
16	364	rundll32.exe
18	364	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 3248 wrote to memory of 364	3248	rundll32.exe	rundll32.exe
PID 3248 wrote to memory of 364	3248	rundll32.exe	rundll32.exe
PID 3248 wrote to memory of 364	3248	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef2f56a3315360c36595dde8c121e8c3fbcdab622c9015a14499b2dc1ac7883f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3248
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef2f56a3315360c36595dde8c121e8c3fbcdab622c9015a14499b2dc1ac7883f.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:364

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/364-2-0x0000000000000000-mapping.dmp

Download
memory/364-3-0x0000000073CA0000-0x0000000073CD3000-memory.dmp

Filesize
204KB

Download
memory/364-4-0x0000000003390000-0x0000000003396000-memory.dmp

Filesize
24KB

Download
memory/364-5-0x0000000073CA0000-0x0000000073CBF000-memory.dmp

Filesize
124KB

Download