dridex | 6860b23431c03b24449bf266854150b9a1afe5978b84f53803d446696a0e3621

Analysis

max time kernel
138s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220722-en
resource tags

arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
submitted
31-07-2022 05:14

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General

Target

jknhou4k.dll
Size

785KB
MD5

adae957f96ecb08a9271bcbe38da2cc5
SHA1

acfaf6b3f0f2c97446e14567ba3fb4d101464ff4
SHA256

6860b23431c03b24449bf266854150b9a1afe5978b84f53803d446696a0e3621
SHA512

9018c290c9bb7ccd576a7dac15ddc1cc4051a9e6026a7013328984f0874638814197ffbb0adda8ee6a43e7d77b6de279585459e0bf12d6eeb2676b99edc150b6

Score

10^/10

dridex 10444 botnet discovery evasion trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

209.20.87.138:443

198.1.115.153:8172

151.236.29.248:6516

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex
Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

39 1668 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
39	1668	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 1932 wrote to memory of 1668	1932	rundll32.exe	rundll32.exe
PID 1932 wrote to memory of 1668	1932	rundll32.exe	rundll32.exe
PID 1932 wrote to memory of 1668	1932	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\jknhou4k.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1932

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\jknhou4k.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1668

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/1668-133-0x0000000000000000-mapping.dmp

Download
memory/1668-135-0x00000000750F0000-0x000000007520B000-memory.dmp

Filesize
1.1MB

Download
memory/1668-134-0x00000000750F0000-0x000000007512D000-memory.dmp

Filesize
244KB

Download
memory/1668-137-0x00000000750F0000-0x000000007520B000-memory.dmp

Filesize
1.1MB

Download
memory/1668-138-0x00000000750F0000-0x000000007520B000-memory.dmp

Filesize
1.1MB

Download