dridex | 921e5238a62b3122d0c95521b633de0ea44e54403ab8529fdbc9af99f611064a

Analysis

max time kernel
26s
max time network
136s
platform
windows10_x64
resource
win10v20201028
submitted
24-02-2021 23:42

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General

Target

921e5238a62b3122d0c95521b633de0ea44e54403ab8529fdbc9af99f611064a.dll
Size

188KB
MD5

2bc3dfc7ffca3d969b16b08acd3bdd33
SHA1

00317e4ca76f80f2cc85ea61b0c97c2c39e781b8
SHA256

921e5238a62b3122d0c95521b633de0ea44e54403ab8529fdbc9af99f611064a
SHA512

346a5e53730fa5dfca2d6101d6d1a6cf4c260ec9ef421722176c5caf79803affb91b28f07d5c500cd6f80f1353c099834428c6f257c9ae7b7dc616b3aa28bd43

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

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
behavioral2/memory/1336-3-0x0000000073EF0000-0x0000000073F21000-memory.dmp	dridex_ldr
behavioral2/memory/1336-5-0x0000000073EF0000-0x0000000073F0F000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

15 1336 rundll32.exe
17 1336 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
15	1336	rundll32.exe
17	1336	rundll32.exe

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

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1180 wrote to memory of 1336	1180	rundll32.exe	rundll32.exe
PID 1180 wrote to memory of 1336	1180	rundll32.exe	rundll32.exe
PID 1180 wrote to memory of 1336	1180	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\921e5238a62b3122d0c95521b633de0ea44e54403ab8529fdbc9af99f611064a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1180

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\921e5238a62b3122d0c95521b633de0ea44e54403ab8529fdbc9af99f611064a.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1336

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1336-2-0x0000000000000000-mapping.dmp

Download
memory/1336-3-0x0000000073EF0000-0x0000000073F21000-memory.dmp

Filesize
196KB

Download
memory/1336-4-0x00000000028E0000-0x00000000028E6000-memory.dmp

Filesize
24KB

Download
memory/1336-5-0x0000000073EF0000-0x0000000073F0F000-memory.dmp

Filesize
124KB

Download