dridex | c9d0e573b96624c383b1c06d6f89d34040275280b8f621027a12b98eaf354086

Analysis

max time kernel
50s
max time network
67s
platform
windows7_x64
resource
win7-20220414-en
submitted
11-06-2022 16:57

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General

Target

rkya3t.dll
Size

1.0MB
MD5

2c7695cd3d9572390969b9453712a6d5
SHA1

2e59bfd3617b75c10d05218c460340032ec87471
SHA256

c9d0e573b96624c383b1c06d6f89d34040275280b8f621027a12b98eaf354086
SHA512

e74f00deba5a73dee885b9757177dc2b72bbe5ec62ce88a66b3a4bc9896a4cf0f44483c1267d235d6ec52dd1150d575abb55acaf7751cb2913b113fc0e684992

Score

10^/10

dridex 10444 botnet discovery evasion trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

192.46.210.220:443

143.244.140.214:808

45.77.0.96:6891

185.56.219.47:8116

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

2 308 rundll32.exe
5 308 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
2	308	rundll32.exe
5	308	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 1548 wrote to memory of 308	1548	rundll32.exe	rundll32.exe
PID 1548 wrote to memory of 308	1548	rundll32.exe	rundll32.exe
PID 1548 wrote to memory of 308	1548	rundll32.exe	rundll32.exe
PID 1548 wrote to memory of 308	1548	rundll32.exe	rundll32.exe
PID 1548 wrote to memory of 308	1548	rundll32.exe	rundll32.exe
PID 1548 wrote to memory of 308	1548	rundll32.exe	rundll32.exe
PID 1548 wrote to memory of 308	1548	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\rkya3t.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1548

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\rkya3t.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:308

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/308-54-0x0000000000000000-mapping.dmp

Download
memory/308-55-0x00000000759E1000-0x00000000759E3000-memory.dmp

Filesize
8KB

Download
memory/308-56-0x0000000074EC0000-0x0000000074FDB000-memory.dmp

Filesize
1.1MB

Download
memory/308-58-0x0000000074EC0000-0x0000000074FDB000-memory.dmp

Filesize
1.1MB

Download
memory/308-57-0x0000000074EC0000-0x0000000074EFD000-memory.dmp

Filesize
244KB

Download
memory/308-60-0x0000000074EC0000-0x0000000074FDB000-memory.dmp

Filesize
1.1MB

Download
memory/308-61-0x0000000074EC0000-0x0000000074FDB000-memory.dmp

Filesize
1.1MB

Download