dridex | 55971da79963e4e1ac94533e9097dc48c9d9f3e8903ffcd3146ad92b6a8e7ed2

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7v20201028
submitted
24/02/2021, 15:35

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General

Target
55971da79963e4e1ac94533e9097dc48c9d9f3e8903ffcd3146ad92b6a8e7ed2.dll
Size 188KB
Sample210224-9sr97h7s2x
SHA256 55971da79963e4e1ac94533e9097dc48c9d9f3e8903ffcd3146ad92b6a8e7ed2
MD5 f50a2fc77bda39064ac8a104ea12160d
SHA1 40230488500aebe9753e66658f6959340acea38f
SHA512 c9e3ae8e028733a1090fecff8be48c6c74a7d99259f1825220024e72077c6630a9d67da53ad744c82fd47b4a953df9341d27cce44ababd2410dffa3556d3ba13
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/1160-5-0x00000000750A0000-0x00000000750D1000-memory.dmp	dridex_ldr
behavioral1/memory/1160-7-0x00000000750A0000-0x00000000750BF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

flow	pid	Process
6	1160	rundll32.exe
8	1160	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 1924 wrote to memory of 1160	1924	rundll32.exe	25
PID 1924 wrote to memory of 1160	1924	rundll32.exe	25
PID 1924 wrote to memory of 1160	1924	rundll32.exe	25
PID 1924 wrote to memory of 1160	1924	rundll32.exe	25
PID 1924 wrote to memory of 1160	1924	rundll32.exe	25
PID 1924 wrote to memory of 1160	1924	rundll32.exe	25
PID 1924 wrote to memory of 1160	1924	rundll32.exe	25

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\55971da79963e4e1ac94533e9097dc48c9d9f3e8903ffcd3146ad92b6a8e7ed2.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\55971da79963e4e1ac94533e9097dc48c9d9f3e8903ffcd3146ad92b6a8e7ed2.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1160

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/1160-3-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

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memory/1160-4-0x0000000074D30000-0x0000000074ED3000-memory.dmp

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memory/1160-5-0x00000000750A0000-0x00000000750D1000-memory.dmp

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memory/1160-6-0x0000000000410000-0x0000000000416000-memory.dmp

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memory/1160-7-0x00000000750A0000-0x00000000750BF000-memory.dmp

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memory/1804-8-0x000007FEF79D0000-0x000007FEF7C4A000-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