dridex | a129f0d21e80d53b7de86f2b6cdc8434f75a4fb98eb87aa43753cb5bbdf561da

Analysis

max time kernel
143s
max time network
152s
platform
windows7_x64
resource
win7-20220414-en
submitted
26-06-2022 06:07

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General

Target

u0eukz.dll
Size

453KB
MD5

86cdc85c3d58de12bf6e8783d044a105
SHA1

b47f3b5529277cf2645ed56e8d1b832c9a065969
SHA256

a129f0d21e80d53b7de86f2b6cdc8434f75a4fb98eb87aa43753cb5bbdf561da
SHA512

6f392c86ea5c9d3046ad24b31b7246edcffbf6d612555a360d7d409778e3e17611f735cee7f663d949442cf2c8cf6e7b8a6d8e1836c23d281b0f3267664b0502

Score

10^/10

dridex 10444 botnet discovery evasion trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

195.231.69.151:3889

62.138.14.216:3074

46.4.83.131:3389

198.211.118.187:3388

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 3 IoCs

Processes:

rundll32.exe

flow pid process

2 1672 rundll32.exe
4 1672 rundll32.exe
6 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

Processes:

rundll32.exe

description ioc process

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

flow	pid	process
2	1672	rundll32.exe
4	1672	rundll32.exe
6	1672	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 1120 wrote to memory of 1672	1120	rundll32.exe	rundll32.exe
PID 1120 wrote to memory of 1672	1120	rundll32.exe	rundll32.exe
PID 1120 wrote to memory of 1672	1120	rundll32.exe	rundll32.exe
PID 1120 wrote to memory of 1672	1120	rundll32.exe	rundll32.exe
PID 1120 wrote to memory of 1672	1120	rundll32.exe	rundll32.exe
PID 1120 wrote to memory of 1672	1120	rundll32.exe	rundll32.exe
PID 1120 wrote to memory of 1672	1120	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\u0eukz.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1120

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\u0eukz.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1672

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/1672-54-0x0000000000000000-mapping.dmp

Download
memory/1672-55-0x00000000759E1000-0x00000000759E3000-memory.dmp

Filesize
8KB

Download
memory/1672-56-0x00000000001D0000-0x000000000020D000-memory.dmp

Filesize
244KB

Download
memory/1672-57-0x00000000003E0000-0x000000000041D000-memory.dmp

Filesize
244KB

Download
memory/1672-58-0x00000000003E0000-0x000000000041D000-memory.dmp

Filesize
244KB

Download