dridex | 394a70c47251b594ee8d6743d227ac88a7cbe3fb5225d9c58a2824a4851b5519

Analysis

max time kernel
28s
max time network
138s
platform
windows10_x64
resource
win10v20201028
submitted
04-03-2021 02:29

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General

Target

394a70c47251b594ee8d6743d227ac88a7cbe3fb5225d9c58a2824a4851b5519.dll
Size

196KB
MD5

e90268f749737fe247128d9f9c6dbec9
SHA1

9e2a7dc828a856f1a5277877de49911b352f5899
SHA256

394a70c47251b594ee8d6743d227ac88a7cbe3fb5225d9c58a2824a4851b5519
SHA512

f5ed4a9574c697370a1327fca519054acfd1e5e9f4710d34783e6d13639a9f96ce853eed915248aa4fedd7e5ac1e8dce2d51315689413917eeccff695b80a61c

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/1460-3-0x00000000738C0000-0x00000000738F3000-memory.dmp	dridex_ldr
behavioral2/memory/1460-5-0x00000000738C0000-0x00000000738DF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

14 1460 rundll32.exe
16 1460 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
14	1460	rundll32.exe
16	1460	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 944 wrote to memory of 1460	944	rundll32.exe	rundll32.exe
PID 944 wrote to memory of 1460	944	rundll32.exe	rundll32.exe
PID 944 wrote to memory of 1460	944	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\394a70c47251b594ee8d6743d227ac88a7cbe3fb5225d9c58a2824a4851b5519.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:944

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\394a70c47251b594ee8d6743d227ac88a7cbe3fb5225d9c58a2824a4851b5519.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1460

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/1460-2-0x0000000000000000-mapping.dmp

Download
memory/1460-3-0x00000000738C0000-0x00000000738F3000-memory.dmp

Filesize
204KB

Download
memory/1460-4-0x0000000002550000-0x0000000002556000-memory.dmp

Filesize
24KB

Download
memory/1460-5-0x00000000738C0000-0x00000000738DF000-memory.dmp

Filesize
124KB

Download