dridex | 3c4be1285b8069c2db590c1de6a77adef3198cc9c3f323aef5de73753421c2e8

General

Target

6_aaclient.dll
Size

244KB
MD5

94395a29f0cf16cc80c2a1a4aee0d8d4
SHA1

c40574963b019d49fae4cffcefd970edf3957826
SHA256

3c4be1285b8069c2db590c1de6a77adef3198cc9c3f323aef5de73753421c2e8
SHA512

ca4fbefdfd4437f01d11545a28a3d21873f417a237a2e4a7e5c10abc2d59abbe5ffcdb146144e1c7dcfb304b9d747b119c8b1f0e72ac312c0a029cf12985d9f8

Score

10^/10

dridex 22201 botnet loader

Malware Config

Extracted

Family

dridex

Botnet

22201

C2

195.154.146.84:443

45.56.121.87:8116

157.245.222.44:5723

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

Processes:

resource	yara_rule
behavioral1/memory/1904-61-0x00000000744D0000-0x000000007450E000-memory.dmp	dridex_ldr
behavioral1/memory/1904-60-0x00000000744D0000-0x00000000744FF000-memory.dmp	dridex_ldr

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

592 1904 WerFault.exe rundll32.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

WerFault.exe

pid process

592 WerFault.exe
592 WerFault.exe
592 WerFault.exe
592 WerFault.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

592 WerFault.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 592 WerFault.exe

pid	pid_target	process	target process
592	1904	WerFault.exe	rundll32.exe

pid	process
592	WerFault.exe
592	WerFault.exe
592	WerFault.exe
592	WerFault.exe

pid	process
592	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	592	WerFault.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2024 wrote to memory of 1904	2024	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1904	2024	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1904	2024	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1904	2024	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1904	2024	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1904	2024	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1904	2024	rundll32.exe	rundll32.exe
PID 1904 wrote to memory of 592	1904	rundll32.exe	WerFault.exe
PID 1904 wrote to memory of 592	1904	rundll32.exe	WerFault.exe
PID 1904 wrote to memory of 592	1904	rundll32.exe	WerFault.exe
PID 1904 wrote to memory of 592	1904	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6_aaclient.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2024

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6_aaclient.dll,#1
2⤵
- Suspicious use of WriteProcessMemory
PID:1904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1904 -s 252
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:592

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/592-62-0x0000000000000000-mapping.dmp

Download
memory/592-64-0x00000000002C0000-0x00000000002C1000-memory.dmp

Filesize
4KB

Download
memory/1904-54-0x0000000000000000-mapping.dmp

Download
memory/1904-55-0x0000000075871000-0x0000000075873000-memory.dmp

Filesize
8KB

Download
memory/1904-56-0x00000000744D0000-0x000000007450E000-memory.dmp

Filesize
248KB

Download
memory/1904-59-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/1904-61-0x00000000744D0000-0x000000007450E000-memory.dmp

Filesize
248KB

Download
memory/1904-60-0x00000000744D0000-0x00000000744FF000-memory.dmp

Filesize
188KB

Download
memory/1904-63-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download

Analysis

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