dridex | d8ab2cd6839646c2bfcb6d74a1eb4d35de975dcc457a19716f89cac6f553c658

Analysis

max time kernel
63s
max time network
122s
platform
windows7_x64
resource
win7v20210408
submitted
19-04-2021 13:09

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General

Target

gu5xr9o.tar.dll
Size

734KB
MD5

498341ae19f9aa4dbed0d2f81b4409a3
SHA1

a2c2fff5f561a5a64644f7250405c5c2a04fd10e
SHA256

d8ab2cd6839646c2bfcb6d74a1eb4d35de975dcc457a19716f89cac6f553c658
SHA512

84359a2f2fd1b3fbc7f3db16b45c31e2ae6cca96c137dd4c803d079381ca782239f091cbddc2f9fe8907818664ae4528d9e1d79f69fb56a3a6c0cd63b170e733

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

146.185.170.249:443

62.75.251.60:6601

185.148.168.25:2303

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
behavioral1/memory/2004-63-0x0000000075050000-0x000000007512A000-memory.dmp	dridex_ldr
behavioral1/memory/2004-62-0x0000000075050000-0x000000007508D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

6 2004 rundll32.exe
8 2004 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
6	2004	rundll32.exe
8	2004	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 1096 wrote to memory of 2004	1096	rundll32.exe	rundll32.exe
PID 1096 wrote to memory of 2004	1096	rundll32.exe	rundll32.exe
PID 1096 wrote to memory of 2004	1096	rundll32.exe	rundll32.exe
PID 1096 wrote to memory of 2004	1096	rundll32.exe	rundll32.exe
PID 1096 wrote to memory of 2004	1096	rundll32.exe	rundll32.exe
PID 1096 wrote to memory of 2004	1096	rundll32.exe	rundll32.exe
PID 1096 wrote to memory of 2004	1096	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\gu5xr9o.tar.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1096

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\gu5xr9o.tar.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:2004

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/2004-60-0x0000000000000000-mapping.dmp

Download
memory/2004-61-0x0000000075DA1000-0x0000000075DA3000-memory.dmp

Filesize
8KB

Download
memory/2004-63-0x0000000075050000-0x000000007512A000-memory.dmp

Filesize
872KB

Download
memory/2004-62-0x0000000075050000-0x000000007508D000-memory.dmp

Filesize
244KB

Download
memory/2004-64-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download