dridex | 90f77fff73bab6078bcb2d9fdb9181900fe24d2db09970877a18fd0460e05a7f

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23/12/2024, 21:23

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General

Target

filler_dk9naf.dll
Size

188KB
MD5

89bb3dde45bd0702423bf21f5e3ba4d0
SHA1

780b4bb6e07d29f05f216bcd63643210ed45056f
SHA256

74b92281565f1a504e4da093363cbd8e12639ef1b63395879e6aca3f020ae83a
SHA512

a37155318256068a893c8abe9007aa5136d3b0b7f6276baf621bce422c8634f22f2d777d2b15364e720d846e78e2039eb8b5f63eb85ebc1a76936952dd285c16
SSDEEP

3072:E8bP7oCIkCD6Wgk3OIbtRpr1eVE+nxNS5KL/JcmdzuG51u:RoCXC223Ow5uznxNS5WBJ

Score

10^/10

dridex 22201 botnet discovery loader

Malware Config

Extracted

Family

dridex

Botnet

22201

51.79.50.122:443

222.124.142.67:10443

138.201.222.158:4664

rc4.plain

Signatures

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

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

resource	yara_rule
behavioral1/memory/2556-0-0x0000000074B30000-0x0000000074B60000-memory.dmp	dridex_ldr

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2400	2556	WerFault.exe	30

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2540 wrote to memory of 2556	2540	rundll32.exe	30
PID 2540 wrote to memory of 2556	2540	rundll32.exe	30
PID 2540 wrote to memory of 2556	2540	rundll32.exe	30
PID 2540 wrote to memory of 2556	2540	rundll32.exe	30
PID 2540 wrote to memory of 2556	2540	rundll32.exe	30
PID 2540 wrote to memory of 2556	2540	rundll32.exe	30
PID 2540 wrote to memory of 2556	2540	rundll32.exe	30
PID 2556 wrote to memory of 2400	2556	rundll32.exe	32
PID 2556 wrote to memory of 2400	2556	rundll32.exe	32
PID 2556 wrote to memory of 2400	2556	rundll32.exe	32
PID 2556 wrote to memory of 2400	2556	rundll32.exe	32

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\filler_dk9naf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\filler_dk9naf.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2556
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2556 -s 280
    3⤵
    - Program crash
    PID:2400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2556-1-0x00000000001A0000-0x00000000001A6000-memory.dmp

Filesize
24KB

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memory/2556-0-0x0000000074B30000-0x0000000074B60000-memory.dmp

Filesize
192KB

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