dridex | 0b1d65243616e6e7dd9804775739f945cc67e80018a9584139efc45698a20185

Analysis

max time kernel
43s
max time network
10s
platform
windows7_x64
resource
win7v20210408
submitted
22-04-2021 08:59

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General

Target

zdnnagb.dll
Size

1.1MB
MD5

bcdb8892ade3fbcef1e017b8c8acca6a
SHA1

e206f3101ea0ba57a23507148e8770b8e6815272
SHA256

0b1d65243616e6e7dd9804775739f945cc67e80018a9584139efc45698a20185
SHA512

31ecf280c0569d3c2c03fcb32619768535eee199e03a67f10be4a308ba4f533cfa0a79ab8e70d146f85dffe9b6b5d16869e2c65b4504afb7ffea424f4c0cbf82

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/1292-62-0x0000000074310000-0x000000007434D000-memory.dmp	dridex_ldr
behavioral1/memory/1292-63-0x0000000074310000-0x0000000074438000-memory.dmp	dridex_ldr

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

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 1840 wrote to memory of 1292	1840	rundll32.exe	rundll32.exe
PID 1840 wrote to memory of 1292	1840	rundll32.exe	rundll32.exe
PID 1840 wrote to memory of 1292	1840	rundll32.exe	rundll32.exe
PID 1840 wrote to memory of 1292	1840	rundll32.exe	rundll32.exe
PID 1840 wrote to memory of 1292	1840	rundll32.exe	rundll32.exe
PID 1840 wrote to memory of 1292	1840	rundll32.exe	rundll32.exe
PID 1840 wrote to memory of 1292	1840	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zdnnagb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1840

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zdnnagb.dll,#1
2⤵
- Checks whether UAC is enabled
PID:1292

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/1292-60-0x0000000000000000-mapping.dmp

Download
memory/1292-61-0x0000000074D91000-0x0000000074D93000-memory.dmp

Filesize
8KB

Download
memory/1292-62-0x0000000074310000-0x000000007434D000-memory.dmp

Filesize
244KB

Download
memory/1292-63-0x0000000074310000-0x0000000074438000-memory.dmp

Filesize
1.2MB

Download
memory/1292-64-0x0000000000180000-0x0000000000181000-memory.dmp

Filesize
4KB

Download