dridex | 7359fb03e09c8416c7a967f72df483a1b60066434c9e49e0deb4b18cb11e9192

Analysis

max time kernel
136s
max time network
135s
platform
windows7_x64
resource
win7v20201028
submitted
19-11-2020 13:34

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General

Target

j4r7zap.dll
Size

539KB
MD5

19473a4823afb3ca1c966ffed1ee6003
SHA1

db853d8f738ee15172141315e96644bf6f265d6b
SHA256

7359fb03e09c8416c7a967f72df483a1b60066434c9e49e0deb4b18cb11e9192
SHA512

850fbc3ae33fa2d36fb4ecd7d06487be6dc1e382e7228faf1648b53e7c0d99ef9724b7578b1aaa42f97b53f2b60497737d14033e2deb09f38d838e7f2aa065cd

Score

10^/10

dridex 10555 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10555

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/1632-1-0x0000000000430000-0x000000000046D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

3 1632 rundll32.exe
6 1632 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
3	1632	rundll32.exe
6	1632	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 1068 wrote to memory of 1632	1068	rundll32.exe	rundll32.exe
PID 1068 wrote to memory of 1632	1068	rundll32.exe	rundll32.exe
PID 1068 wrote to memory of 1632	1068	rundll32.exe	rundll32.exe
PID 1068 wrote to memory of 1632	1068	rundll32.exe	rundll32.exe
PID 1068 wrote to memory of 1632	1068	rundll32.exe	rundll32.exe
PID 1068 wrote to memory of 1632	1068	rundll32.exe	rundll32.exe
PID 1068 wrote to memory of 1632	1068	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\j4r7zap.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1068

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\j4r7zap.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1632

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/1088-2-0x000007FEF7E60000-0x000007FEF80DA000-memory.dmp

Filesize
2.5MB

Download
memory/1632-0-0x0000000000000000-mapping.dmp

Download
memory/1632-1-0x0000000000430000-0x000000000046D000-memory.dmp

Filesize
244KB

Download