dridex | c6784abd48dc7e4cbaf9387e2feb04132482412051b7df24f06d4860234107ad

Analysis

max time kernel
30s
max time network
112s
platform
windows10_x64
resource
win10v20201028
submitted
04-03-2021 09:05

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General

Target

c6784abd48dc7e4cbaf9387e2feb04132482412051b7df24f06d4860234107ad.dll
Size

196KB
MD5

8440469645ebb3770dc1ccd744bb44c6
SHA1

5b1e7f3792c1b2214e317d2d060884b3c6d6194e
SHA256

c6784abd48dc7e4cbaf9387e2feb04132482412051b7df24f06d4860234107ad
SHA512

115bd9b2c695b579fea66eb3f133b3a98e5c2e49ad0a356216cc464f27f56572daec6505b38d465cb98f3c8f41272585f49b921f8a1905cda59140435ed89fb0

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

37.247.35.132:443

50.243.30.51:6601

162.241.204.234:6516

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/608-3-0x0000000074390000-0x00000000743C3000-memory.dmp	dridex_ldr
behavioral2/memory/608-5-0x0000000074390000-0x00000000743AF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

16 608 rundll32.exe
18 608 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
16	608	rundll32.exe
18	608	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 580 wrote to memory of 608	580	rundll32.exe	rundll32.exe
PID 580 wrote to memory of 608	580	rundll32.exe	rundll32.exe
PID 580 wrote to memory of 608	580	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c6784abd48dc7e4cbaf9387e2feb04132482412051b7df24f06d4860234107ad.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:580
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c6784abd48dc7e4cbaf9387e2feb04132482412051b7df24f06d4860234107ad.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:608

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/608-2-0x0000000000000000-mapping.dmp

Download
memory/608-3-0x0000000074390000-0x00000000743C3000-memory.dmp

Filesize
204KB

Download
memory/608-4-0x00000000009F0000-0x00000000009F6000-memory.dmp

Filesize
24KB

Download
memory/608-5-0x0000000074390000-0x00000000743AF000-memory.dmp

Filesize
124KB

Download