dridex | 4ba25a89ead7d0394a382cde04d39d5fad5ef7000699a8b31dfb91dad7a2fa27

Analysis

max time kernel
62s
max time network
137s
platform
windows10_x64
resource
win10v20201028
submitted
24-02-2021 23:21

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General

Target

4ba25a89ead7d0394a382cde04d39d5fad5ef7000699a8b31dfb91dad7a2fa27.dll
Size

188KB
MD5

7ab7e0029a698e5ae5d1cbc88d8f4060
SHA1

506deaad3ea66ddff9bf2f0c7436563976b34d9d
SHA256

4ba25a89ead7d0394a382cde04d39d5fad5ef7000699a8b31dfb91dad7a2fa27
SHA512

7843c7b1df27624a662abd644acc7484a9b0387555337d7f4e944495563f55913d6c63869cb07cf7c52cfb6e530616e444b7e8c12b28a2d2e284bb359c25f6d3

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/4744-3-0x0000000075A50000-0x0000000075A81000-memory.dmp	dridex_ldr
behavioral2/memory/4744-5-0x0000000075A50000-0x0000000075A6F000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

21 4744 rundll32.exe
23 4744 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
21	4744	rundll32.exe
23	4744	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 4684 wrote to memory of 4744	4684	rundll32.exe	rundll32.exe
PID 4684 wrote to memory of 4744	4684	rundll32.exe	rundll32.exe
PID 4684 wrote to memory of 4744	4684	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ba25a89ead7d0394a382cde04d39d5fad5ef7000699a8b31dfb91dad7a2fa27.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4684

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ba25a89ead7d0394a382cde04d39d5fad5ef7000699a8b31dfb91dad7a2fa27.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:4744

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/4744-2-0x0000000000000000-mapping.dmp

Download
memory/4744-3-0x0000000075A50000-0x0000000075A81000-memory.dmp

Filesize
196KB

Download
memory/4744-4-0x00000000044D0000-0x00000000044D6000-memory.dmp

Filesize
24KB

Download
memory/4744-5-0x0000000075A50000-0x0000000075A6F000-memory.dmp

Filesize
124KB

Download