dridex | 55ba4fd13d72f62d19c69be0026b3d62882f067611c6fdf609b0fa723c8cb1ed

Analysis

max time kernel
32s
max time network
140s
platform
windows10_x64
resource
win10v20201028
submitted
24-02-2021 23:42

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General

Target

55ba4fd13d72f62d19c69be0026b3d62882f067611c6fdf609b0fa723c8cb1ed.dll
Size

188KB
MD5

c48e8c8d2a588c9dac2b2cae7e46f344
SHA1

3abe177acbd476f059036c41ce98e37fff7451e8
SHA256

55ba4fd13d72f62d19c69be0026b3d62882f067611c6fdf609b0fa723c8cb1ed
SHA512

41701d540cc77cc0a71626ebc2a4348526c7786eb8c87ea8ff24f899d5858db01d120ff98e777d7c171fdc52b4ab00e1e138ef6e496796efdcc79268cfda5abe

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

209.151.236.42:443

91.121.94.86:8172

5.189.144.136:6516

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex

Dridex Loader 2 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/1052-3-0x00000000743E0000-0x0000000074411000-memory.dmp	dridex_ldr
behavioral2/memory/1052-5-0x00000000743E0000-0x00000000743FF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

14 1052 rundll32.exe
16 1052 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
14	1052	rundll32.exe
16	1052	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 644 wrote to memory of 1052	644	rundll32.exe	rundll32.exe
PID 644 wrote to memory of 1052	644	rundll32.exe	rundll32.exe
PID 644 wrote to memory of 1052	644	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\55ba4fd13d72f62d19c69be0026b3d62882f067611c6fdf609b0fa723c8cb1ed.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:644

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\55ba4fd13d72f62d19c69be0026b3d62882f067611c6fdf609b0fa723c8cb1ed.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1052

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/1052-2-0x0000000000000000-mapping.dmp

Download
memory/1052-3-0x00000000743E0000-0x0000000074411000-memory.dmp

Filesize
196KB

Download
memory/1052-4-0x0000000000C40000-0x0000000000C46000-memory.dmp

Filesize
24KB

Download
memory/1052-5-0x00000000743E0000-0x00000000743FF000-memory.dmp

Filesize
124KB

Download