dridex | de81f923ca4c12378688a8e26fbb0ec11d69d35f509cff7815fd3d4bc9bb0f59

Analysis

max time kernel
59s
max time network
122s
platform
windows10_x64
resource
win10v20201028
submitted
17/02/2021, 16:44

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General

Target
bpcoxf.tar.dll
Size 920KB
Sample210217-z9mx4zar4e
SHA256 de81f923ca4c12378688a8e26fbb0ec11d69d35f509cff7815fd3d4bc9bb0f59
MD5 fe8f4b38ff583c42c615696097e1c196
SHA1 74bc398220c83191c8bb493ce30acd4400917d66
SHA512 aedb1cfb2f81c1c0c193827673d8b6b067699c115c9d00be6fa68ef8e336d7dcb7cdaf234854f01aaa106d8b4bef61d3fb8923a7176fbe66c06a4ad78eae2c8a
MD5 SHA1 SHA512

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

209.20.87.138:443
198.1.115.153:8172
151.236.29.248:6516

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
behavioral2/memory/4788-3-0x00000000736C0000-0x00000000736FD000-memory.dmp	dridex_ldr
behavioral2/memory/4788-4-0x00000000736C0000-0x00000000736FD000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

flow	pid	Process
16	4788	rundll32.exe
18	4788	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 4772 wrote to memory of 4788	4772	rundll32.exe	34
PID 4772 wrote to memory of 4788	4772	rundll32.exe	34
PID 4772 wrote to memory of 4788	4772	rundll32.exe	34

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bpcoxf.tar.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\bpcoxf.tar.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:4788

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/4788-3-0x00000000736C0000-0x00000000736FD000-memory.dmp

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memory/4788-4-0x00000000736C0000-0x00000000736FD000-memory.dmp

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memory/4788-5-0x0000000002D30000-0x0000000002D31000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads