dridex | 45d498fb79a063579d9d758e553a8c3f6792a1cc5a6979d6734d7afda6684359

Analysis

max time kernel
120s
max time network
119s
platform
windows7_x64
resource
win7v20201028
submitted
13-01-2021 11:05

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General

Target

b6nlu684.rar.dll
Size

413KB
MD5

c4536bd01e8dbf70620596f4405cc009
SHA1

2abc224d7b6e9320ba6d00cc722120a95a5bf88a
SHA256

45d498fb79a063579d9d758e553a8c3f6792a1cc5a6979d6734d7afda6684359
SHA512

2eca1efda15314bbe7aaca902c3d8824116d193e7a0dac75bd0db14eb8c70bd16be8ee171e1b70b2f704fa77fbab67cd1ce6a2b6f33c81d345d6066647094308

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

104.131.164.93:443

46.101.90.205:4643

27.254.174.84:4443

92.94.251.127:3786

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/1896-3-0x0000000000730000-0x000000000076D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

4 1896 rundll32.exe
7 1896 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
4	1896	rundll32.exe
7	1896	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 932 wrote to memory of 1896	932	rundll32.exe	rundll32.exe
PID 932 wrote to memory of 1896	932	rundll32.exe	rundll32.exe
PID 932 wrote to memory of 1896	932	rundll32.exe	rundll32.exe
PID 932 wrote to memory of 1896	932	rundll32.exe	rundll32.exe
PID 932 wrote to memory of 1896	932	rundll32.exe	rundll32.exe
PID 932 wrote to memory of 1896	932	rundll32.exe	rundll32.exe
PID 932 wrote to memory of 1896	932	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b6nlu684.rar.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:932

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b6nlu684.rar.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1896

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1200-4-0x000007FEF62E0000-0x000007FEF655A000-memory.dmp

Filesize
2.5MB

Download
memory/1896-2-0x0000000000000000-mapping.dmp

Download
memory/1896-3-0x0000000000730000-0x000000000076D000-memory.dmp

Filesize
244KB

Download