dridex | 4655c0216538f752dea2ce1649807d597cd83a935f1385bdd8f418616de97b68

Analysis

max time kernel
114s
max time network
115s
platform
windows10_x64
resource
win10v20201028
submitted
09-11-2020 19:53

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General

Target

ffjyc3vu.exe.dll
Size

972KB
MD5

cf759a42178be39310e5949f505575fc
SHA1

961e11114e1261425485eb085aed5f272a3cb5ca
SHA256

4655c0216538f752dea2ce1649807d597cd83a935f1385bdd8f418616de97b68
SHA512

2353d5b1fa3187b3196e5601a6dcdcab5256be8bfcb7f3726063e7439a6b5d0fadfdf926c80ab3af119235083cdae4394b643e29d5dd5c85ce915bee99ab3867

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

173.212.197.71:443

154.0.166.46:3074

185.4.132.226:4664

120.138.30.150:3389

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
behavioral2/memory/396-1-0x0000000073410000-0x000000007343B000-memory.dmp	dridex_ldr

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

15 396 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	396	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 580 wrote to memory of 396	580	rundll32.exe	rundll32.exe
PID 580 wrote to memory of 396	580	rundll32.exe	rundll32.exe
PID 580 wrote to memory of 396	580	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ffjyc3vu.exe.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:580

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ffjyc3vu.exe.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:396

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/396-0-0x0000000000000000-mapping.dmp

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memory/396-1-0x0000000073410000-0x000000007343B000-memory.dmp

Filesize
172KB

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