dridex | 1fd19222df72ea875613e81a37e94c30a25cb2d69d857159ee1d7fdfc8848348

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7v20201028
submitted
18-11-2020 12:37

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General

Target

ebfrx57.dll
Size

539KB
MD5

99b10941dd60a6d6e9833ddd7dd8bf87
SHA1

819f39375b87402693f0d0e5f3434c5747234227
SHA256

1fd19222df72ea875613e81a37e94c30a25cb2d69d857159ee1d7fdfc8848348
SHA512

c9474466bb4ed8ff2661c26f407d9f7a59b9820f6e46181bbf76dd4fdd60d489626077c468fac8002941b788131e11c006cb78b541151ea70eda60d0e009b58d

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

162.241.44.26:9443

192.232.229.53:4443

77.220.64.34:443

193.90.12.121:3098

rc4.plain

Signatures

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

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral1/memory/1232-1-0x0000000000350000-0x000000000038D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 4 IoCs

Processes:

rundll32.exe

flow pid process

4 1232 rundll32.exe
7 1232 rundll32.exe
8 1232 rundll32.exe
9 1232 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
4	1232	rundll32.exe
7	1232	rundll32.exe
8	1232	rundll32.exe
9	1232	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 1916 wrote to memory of 1232	1916	rundll32.exe	rundll32.exe
PID 1916 wrote to memory of 1232	1916	rundll32.exe	rundll32.exe
PID 1916 wrote to memory of 1232	1916	rundll32.exe	rundll32.exe
PID 1916 wrote to memory of 1232	1916	rundll32.exe	rundll32.exe
PID 1916 wrote to memory of 1232	1916	rundll32.exe	rundll32.exe
PID 1916 wrote to memory of 1232	1916	rundll32.exe	rundll32.exe
PID 1916 wrote to memory of 1232	1916	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ebfrx57.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1916

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ebfrx57.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1232

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

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Downloads

memory/1232-0-0x0000000000000000-mapping.dmp

Download
memory/1232-1-0x0000000000350000-0x000000000038D000-memory.dmp

Filesize
244KB

Download
memory/1756-2-0x000007FEF7D20000-0x000007FEF7F9A000-memory.dmp

Filesize
2.5MB

Download