dridex | 3a4bd219435b2324b3976dbb7b90789aa4a5cb17567bc6a7129d1e73bfaaa413

Analysis

max time kernel
63s
max time network
141s
platform
windows10_x64
resource
win10v20201028
submitted
01/02/2021, 11:49

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General

Target
z3r5hq.rar.dll
Size 562KB
Sample210201-rwmd85bkaj
SHA256 3a4bd219435b2324b3976dbb7b90789aa4a5cb17567bc6a7129d1e73bfaaa413
MD5 fe79842c3c12b448efb747b370f9605a
SHA1 bb2a3dc9babae6520082feadedf871163fcb19a8
SHA512 1226b30fc38f8fdb7e94e8830eb814d3d81711ac42bdf23a4b54ff058b57c9faf2be287e98a7e64287b7b6532072fdf00e1456f099ff6f0cfa6eceb5b02c5f3b
MD5 SHA1 SHA512

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

77.220.64.131:443
5.196.204.251:5037
192.99.41.136:981
24.229.3.146:4664

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/1328-3-0x0000000073710000-0x000000007374D000-memory.dmp	dridex_ldr
behavioral2/memory/1328-4-0x0000000073710000-0x000000007374D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

flow	pid	Process
17	1328	rundll32.exe
18	1328	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 492 wrote to memory of 1328	492	rundll32.exe	70
PID 492 wrote to memory of 1328	492	rundll32.exe	70
PID 492 wrote to memory of 1328	492	rundll32.exe	70

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\z3r5hq.rar.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:492
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\z3r5hq.rar.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1328

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/1328-3-0x0000000073710000-0x000000007374D000-memory.dmp

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memory/1328-4-0x0000000073710000-0x000000007374D000-memory.dmp

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memory/1328-5-0x0000000000520000-0x0000000000521000-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