dridex | 91be7be2dda7495f73c6a327f389db9dbd80faea933ac6e5a4aea919acfcd420

General

Target

91be7be2dda7495f73c6a327f389db9dbd80faea933ac6e5a4aea919acfcd420.dll
Size

188KB
MD5

419fb27410ca523491409b6a65460184
SHA1

de3a5601b0c7e1580a2334eaa58cfcdeb3a8a2fe
SHA256

91be7be2dda7495f73c6a327f389db9dbd80faea933ac6e5a4aea919acfcd420
SHA512

407a9ba6b31d6dd4064ece79da720054dd37852881d5de3375113ae2d2151f970d30a67c243dccc95fe6dfdf8984a8443a94907b6371e6ea11aea811c3695272

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

C2

209.151.236.42:443

91.121.94.86:8172

5.189.144.136:6516

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

Processes:

resource	yara_rule
behavioral1/memory/1928-5-0x0000000074AD0000-0x0000000074B01000-memory.dmp	dridex_ldr
behavioral1/memory/1928-7-0x0000000074AD0000-0x0000000074AEF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

6 1928 rundll32.exe
8 1928 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

Processes:

rundll32.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe

flow	pid	process
6	1928	rundll32.exe
8	1928	rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1108 wrote to memory of 1928	1108	rundll32.exe	rundll32.exe
PID 1108 wrote to memory of 1928	1108	rundll32.exe	rundll32.exe
PID 1108 wrote to memory of 1928	1108	rundll32.exe	rundll32.exe
PID 1108 wrote to memory of 1928	1108	rundll32.exe	rundll32.exe
PID 1108 wrote to memory of 1928	1108	rundll32.exe	rundll32.exe
PID 1108 wrote to memory of 1928	1108	rundll32.exe	rundll32.exe
PID 1108 wrote to memory of 1928	1108	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\91be7be2dda7495f73c6a327f389db9dbd80faea933ac6e5a4aea919acfcd420.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1108

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\91be7be2dda7495f73c6a327f389db9dbd80faea933ac6e5a4aea919acfcd420.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1928

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1376-8-0x000007FEF7510000-0x000007FEF778A000-memory.dmp

Filesize
2.5MB

Download
memory/1928-2-0x0000000000000000-mapping.dmp

Download
memory/1928-3-0x00000000760D1000-0x00000000760D3000-memory.dmp

Filesize
8KB

Download
memory/1928-4-0x0000000074760000-0x0000000074903000-memory.dmp

Filesize
1.6MB

Download
memory/1928-5-0x0000000074AD0000-0x0000000074B01000-memory.dmp

Filesize
196KB

Download
memory/1928-6-0x0000000000180000-0x0000000000186000-memory.dmp

Filesize
24KB

Download
memory/1928-7-0x0000000074AD0000-0x0000000074AEF000-memory.dmp

Filesize
124KB

Download

Analysis

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