dridex | 81a509915d240010326dae2581c7e584304c5a4f0f02d9ed4d9270e4193e83b1

Analysis

max time kernel
47s
max time network
98s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
31-07-2022 05:08

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General

Target

dfbaq8x5.dll
Size

525KB
MD5

eb477791471e3b4379f816cbf7bc7a56
SHA1

5ec761e52521bda659646ca1bb5cad605b3a98d3
SHA256

81a509915d240010326dae2581c7e584304c5a4f0f02d9ed4d9270e4193e83b1
SHA512

ed5d38339d0344b664e894fba4d0321b81f472556194f00287b684aa025bcaae210efbfecaa342e83a88d0729f8219950d45f4ebb9096f98f21142b025a6209c

Score

10^/10

dridex 10444 botnet discovery evasion trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

169.255.216.36:443

138.201.138.91:3389

89.174.36.41:4643

87.106.89.36:3389

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex
Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

3 1432 rundll32.exe
5 1432 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	1432	rundll32.exe
5	1432	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 876 wrote to memory of 1432	876	rundll32.exe	rundll32.exe
PID 876 wrote to memory of 1432	876	rundll32.exe	rundll32.exe
PID 876 wrote to memory of 1432	876	rundll32.exe	rundll32.exe
PID 876 wrote to memory of 1432	876	rundll32.exe	rundll32.exe
PID 876 wrote to memory of 1432	876	rundll32.exe	rundll32.exe
PID 876 wrote to memory of 1432	876	rundll32.exe	rundll32.exe
PID 876 wrote to memory of 1432	876	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\dfbaq8x5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:876

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\dfbaq8x5.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1432

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/1432-54-0x0000000000000000-mapping.dmp

Download
memory/1432-55-0x0000000075661000-0x0000000075663000-memory.dmp

Filesize
8KB

Download
memory/1432-57-0x0000000000320000-0x000000000035D000-memory.dmp

Filesize
244KB

Download
memory/1432-56-0x00000000001D0000-0x000000000020D000-memory.dmp

Filesize
244KB

Download
memory/1432-58-0x0000000000320000-0x000000000035D000-memory.dmp

Filesize
244KB

Download