dridex | a1658b979357f174c83dcd9867941d8cd917beb3ea67720fa43b6340b27762ba

Analysis

max time kernel
7s
max time network
64s
platform
windows7_x64
resource
win7v20201028
submitted
26-11-2020 05:19

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General

Target

pzxrk4325.dll
Size

355KB
MD5

457a2d0c13db31222c66c3e623d88063
SHA1

15bd1122fe1a910c3b8f255bbe74de5ffed57fd2
SHA256

a1658b979357f174c83dcd9867941d8cd917beb3ea67720fa43b6340b27762ba
SHA512

5eeb2bfcfedd0703134196a3135bba5bbc59d67ab51bc847c837e4243c1c1a7fa1971a5602af5f6d946ef1a0f5c5f5f1f1807fa5e5d6dc723b6d5888336875c3

Score

10^/10

dridex 10555 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10555

194.225.58.216:443

178.254.40.132:691

216.172.165.70:3889

198.57.200.100:3786

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/1912-1-0x00000000002F0000-0x000000000032D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

3 1912 rundll32.exe
6 1912 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	1912	rundll32.exe
6	1912	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 1912	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1912	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1912	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1912	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1912	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1912	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1912	1700	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\pzxrk4325.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1700

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\pzxrk4325.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1912

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/1168-2-0x000007FEF74B0000-0x000007FEF772A000-memory.dmp

Filesize
2.5MB

Download
memory/1912-0-0x0000000000000000-mapping.dmp

Download
memory/1912-1-0x00000000002F0000-0x000000000032D000-memory.dmp

Filesize
244KB

Download