dridex | d554bef77e35bbaa325fc61e5bca1ae419f9b2222110c913eb09b9369563c061

Analysis

max time kernel
63s
max time network
122s
platform
windows7_x64
resource
win7v20201028
submitted
11-11-2020 15:26

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General

Target

uokhe8v0.dll
Size

528KB
MD5

cb19fe63b301713587e7bdddec6a50f7
SHA1

e9b4ee7c2f9a3aa819ffe4bd48bd26fa5536e39b
SHA256

d554bef77e35bbaa325fc61e5bca1ae419f9b2222110c913eb09b9369563c061
SHA512

dab87c4956ded3992681d10666fec4026b40608f9501183f6e0b80ffd9776c7f7bb80305d4c94cdf0675c94a85f94606852d04873dbf1761346d508cf54ed6b8

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

77.220.64.39:443

69.164.207.140:3388

78.47.139.43:4443

103.244.206.74:33443

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/1900-1-0x0000000010000000-0x000000001003D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

3 1900 rundll32.exe
6 1900 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	1900	rundll32.exe
6	1900	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 1700 wrote to memory of 1900	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1900	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1900	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1900	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1900	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1900	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1900	1700	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\uokhe8v0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\uokhe8v0.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1900

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/1420-2-0x000007FEF6200000-0x000007FEF647A000-memory.dmp

Filesize
2.5MB

Download
memory/1900-0-0x0000000000000000-mapping.dmp

Download
memory/1900-1-0x0000000010000000-0x000000001003D000-memory.dmp

Filesize
244KB

Download