dridex | 8ceb186696c9bda47466e5ecd1d0f0d5f93318e8bdc6b42454dd3be884e99e33

Analysis

max time kernel
142s
max time network
145s
platform
windows7_x64
resource
win7v20201028
submitted
26-11-2020 12:05

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General

Target

ucjk7st.dll
Size

426KB
MD5

455e8c40a659762249a13b5ef6cfb2cb
SHA1

818423b1fc4f4149e2bda0feb359c1605de1eb6c
SHA256

8ceb186696c9bda47466e5ecd1d0f0d5f93318e8bdc6b42454dd3be884e99e33
SHA512

7ba2b6f6c452009e74a31a0da2bc3a27e565fe12997c33cb0e8cf9397cd61ec232e2870516aa94e4f2affd2291f6b728b77775a6f8732dd5133a4df28a341123

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/368-1-0x00000000002C0000-0x00000000002FD000-memory.dmp	dridex_ldr

Blocklisted process makes network request 4 IoCs

Processes:

rundll32.exe

flow pid process

2 368 rundll32.exe
6 368 rundll32.exe
7 368 rundll32.exe
9 368 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	368	rundll32.exe
6	368	rundll32.exe
7	368	rundll32.exe
9	368	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 848 wrote to memory of 368	848	rundll32.exe	rundll32.exe
PID 848 wrote to memory of 368	848	rundll32.exe	rundll32.exe
PID 848 wrote to memory of 368	848	rundll32.exe	rundll32.exe
PID 848 wrote to memory of 368	848	rundll32.exe	rundll32.exe
PID 848 wrote to memory of 368	848	rundll32.exe	rundll32.exe
PID 848 wrote to memory of 368	848	rundll32.exe	rundll32.exe
PID 848 wrote to memory of 368	848	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ucjk7st.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:848

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ucjk7st.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:368

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/368-0-0x0000000000000000-mapping.dmp

Download
memory/368-1-0x00000000002C0000-0x00000000002FD000-memory.dmp

Filesize
244KB

Download
memory/1232-2-0x000007FEF6580000-0x000007FEF67FA000-memory.dmp

Filesize
2.5MB

Download