dridex | 41a3196cddffcde7697c77e4c3ffc46a852724ab9f25c2999557a870076a6e2f

Analysis

max time kernel
69s
max time network
96s
platform
windows7_x64
resource
win7v20201028
submitted
24/02/2021, 15:07

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General

Target
41a3196cddffcde7697c77e4c3ffc46a852724ab9f25c2999557a870076a6e2f.dll
Size 188KB
Sample210224-cfakatwarx
SHA256 41a3196cddffcde7697c77e4c3ffc46a852724ab9f25c2999557a870076a6e2f
MD5 20c4f1883aa7d80c3ea5800828d6c159
SHA1 ac0e1e27d106d416efb85ff0104fa77cc76547dd
SHA512 bcbc587533787ec8a4ed43d504ffbe50633f4b636bcb2aeb1998c2a23211e31df66aa3a8b4630762774938819eb403baabfd0e6bd1563f078c56b647fb1b6c0d
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/1828-5-0x0000000074500000-0x0000000074531000-memory.dmp	dridex_ldr
behavioral1/memory/1828-7-0x0000000074500000-0x000000007451F000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

flow	pid	Process
5	1828	rundll32.exe
8	1828	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 336 wrote to memory of 1828	336	rundll32.exe	26
PID 336 wrote to memory of 1828	336	rundll32.exe	26
PID 336 wrote to memory of 1828	336	rundll32.exe	26
PID 336 wrote to memory of 1828	336	rundll32.exe	26
PID 336 wrote to memory of 1828	336	rundll32.exe	26
PID 336 wrote to memory of 1828	336	rundll32.exe	26
PID 336 wrote to memory of 1828	336	rundll32.exe	26

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\41a3196cddffcde7697c77e4c3ffc46a852724ab9f25c2999557a870076a6e2f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:336
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\41a3196cddffcde7697c77e4c3ffc46a852724ab9f25c2999557a870076a6e2f.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1828

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/1336-8-0x000007FEF5BD0000-0x000007FEF5E4A000-memory.dmp

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memory/1828-3-0x00000000753E1000-0x00000000753E3000-memory.dmp

Download

memory/1828-4-0x0000000074190000-0x0000000074333000-memory.dmp

Download

memory/1828-5-0x0000000074500000-0x0000000074531000-memory.dmp

Download

memory/1828-6-0x0000000000270000-0x0000000000276000-memory.dmp

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memory/1828-7-0x0000000074500000-0x000000007451F000-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