dridex | 923772070d4df9bc9673875472d4b0d631495ce5a2ff73fef7a5bfc908f6b342

Analysis

max time kernel
61s
max time network
121s
platform
windows10_x64
resource
win10v20201028
submitted
03-03-2021 19:05

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General

Target

923772070d4df9bc9673875472d4b0d631495ce5a2ff73fef7a5bfc908f6b342.dll
Size

188KB
MD5

574077fa6f39d0d2a7c52983f7127156
SHA1

ab4999d612050f48a522f55abdf265565cfe7d6a
SHA256

923772070d4df9bc9673875472d4b0d631495ce5a2ff73fef7a5bfc908f6b342
SHA512

747d6cfb9e3c95b1ba7d7053855bc933e53e3e370ed6776f2d26057266e10ef3ec591e9e44cea58584479a6e8c42a2255a8de099c6d7adab0a1de06298aed63d

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

116.251.211.158:443

216.10.242.142:6601

37.247.35.137:6601

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/3244-3-0x0000000073D80000-0x0000000073DB1000-memory.dmp	dridex_ldr
behavioral2/memory/3244-5-0x0000000073D80000-0x0000000073D9F000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

22 3244 rundll32.exe
24 3244 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
22	3244	rundll32.exe
24	3244	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 1908 wrote to memory of 3244	1908	rundll32.exe	rundll32.exe
PID 1908 wrote to memory of 3244	1908	rundll32.exe	rundll32.exe
PID 1908 wrote to memory of 3244	1908	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\923772070d4df9bc9673875472d4b0d631495ce5a2ff73fef7a5bfc908f6b342.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1908

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\923772070d4df9bc9673875472d4b0d631495ce5a2ff73fef7a5bfc908f6b342.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:3244

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/3244-2-0x0000000000000000-mapping.dmp

Download
memory/3244-3-0x0000000073D80000-0x0000000073DB1000-memory.dmp

Filesize
196KB

Download
memory/3244-4-0x0000000002DF0000-0x0000000002DF6000-memory.dmp

Filesize
24KB

Download
memory/3244-5-0x0000000073D80000-0x0000000073D9F000-memory.dmp

Filesize
124KB

Download