dridex | cf8d60e49fdc8587af2cc7a7635f882b390aa3af9b6f0d6d3752b2d97c1d083e

Analysis

max time kernel
36s
max time network
96s
platform
windows7_x64
resource
win7v20201028
submitted
24/02/2021, 15:29

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General

Target
cf8d60e49fdc8587af2cc7a7635f882b390aa3af9b6f0d6d3752b2d97c1d083e.dll
Size 188KB
Sample210224-bb832fpm4s
SHA256 cf8d60e49fdc8587af2cc7a7635f882b390aa3af9b6f0d6d3752b2d97c1d083e
MD5 25404ae2ab022f45033965500512ae83
SHA1 75afd63c845920e83d662ce19070e2490af5075e
SHA512 99b378acd6f13efcf00b3d40727b37081c8f97e66f8a6b8b3b643bf4728a6a2e85ad27294653cc7826bba4a14ef6579021bf031086260abfb9cbba0e8276e365
MD5 SHA1 SHA512

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

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

resource	yara_rule
behavioral1/memory/372-5-0x0000000075340000-0x0000000075371000-memory.dmp	dridex_ldr
behavioral1/memory/372-7-0x0000000075340000-0x000000007535F000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

flow	pid	Process
4	372	rundll32.exe
7	372	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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 372	1684	rundll32.exe	25
PID 1684 wrote to memory of 372	1684	rundll32.exe	25
PID 1684 wrote to memory of 372	1684	rundll32.exe	25
PID 1684 wrote to memory of 372	1684	rundll32.exe	25
PID 1684 wrote to memory of 372	1684	rundll32.exe	25
PID 1684 wrote to memory of 372	1684	rundll32.exe	25
PID 1684 wrote to memory of 372	1684	rundll32.exe	25

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\cf8d60e49fdc8587af2cc7a7635f882b390aa3af9b6f0d6d3752b2d97c1d083e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\cf8d60e49fdc8587af2cc7a7635f882b390aa3af9b6f0d6d3752b2d97c1d083e.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:372

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

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Downloads

memory/372-3-0x00000000756A1000-0x00000000756A3000-memory.dmp

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memory/372-4-0x0000000074FD0000-0x0000000075173000-memory.dmp

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memory/372-5-0x0000000075340000-0x0000000075371000-memory.dmp

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memory/372-6-0x00000000001A0000-0x00000000001A6000-memory.dmp

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memory/372-7-0x0000000075340000-0x000000007535F000-memory.dmp

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memory/1352-8-0x000007FEF68D0000-0x000007FEF6B4A000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads