dridex | b7a5135fb78a58682cc0de111468bb007d1f8c78bbd561d3f155809b6e991a29

Analysis

max time kernel
59s
max time network
110s
platform
windows10_x64
resource
win10
submitted
26/10/2020, 16:29

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General

Target
tw5ljof.zip.dll
Size 918KB
Sample201026-wqtg4dev6e
SHA256 b7a5135fb78a58682cc0de111468bb007d1f8c78bbd561d3f155809b6e991a29
MD5 7132d826975660b78ac7479482e89b4e
SHA1 66559a0612c114a829d4ac609efd50b592be9ed6
SHA512 60ad757227898d561e0eb87aebe7ffb1865becca8c3dc70df47afd00f583a74cca9f015e923cd107255c50fb0daf40177174ec077b6df443c48a461590cdcf53
MD5 SHA1 SHA512

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

85.207.13.169:443
74.207.242.13:1688
176.58.101.200:49160
164.132.75.129:3388

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

resource	yara_rule
behavioral2/memory/3936-1-0x0000000073B70000-0x0000000073BAD000-memory.dmp	dridex_ldr

Blocklisted process makes network request 1 IoCs

flow	pid	Process
28	3936	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 3 IoCs

description	pid	Process	procid_target
PID 3892 wrote to memory of 3936	3892	rundll32.exe	68
PID 3892 wrote to memory of 3936	3892	rundll32.exe	68
PID 3892 wrote to memory of 3936	3892	rundll32.exe	68

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\tw5ljof.zip.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3892
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\tw5ljof.zip.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:3936

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/3936-1-0x0000000073B70000-0x0000000073BAD000-memory.dmp

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