dridex | cfcc473a5f83f83517a1c4917dd2c330be6252bc95fcf176e9b783fb694f6f31

Analysis

max time kernel
99s
max time network
114s
platform
windows7_x64
resource
win7-20220414-en
submitted
26-06-2022 06:20

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General

Target

zk58h95.dll
Size

717KB
MD5

9d41e73e80b3e6633600d32940385577
SHA1

14f7941d13568db8f1f061a2d4de6db7eeaad394
SHA256

cfcc473a5f83f83517a1c4917dd2c330be6252bc95fcf176e9b783fb694f6f31
SHA512

2b035060971ac972040f59e012f58176fa0579ca9785913800c2963cb30e8794196d7726b45460b8bf7499878d0f175e8cb8f1b94c7ae05fe65eb8358cac3211

Score

10^/10

dridex 10444 botnet discovery evasion trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

97.107.127.161:443

45.33.94.33:5037

159.89.91.92:5037

158.69.118.130:1443

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 1916 rundll32.exe
5 1916 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	1916	rundll32.exe
5	1916	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 1180 wrote to memory of 1916	1180	rundll32.exe	rundll32.exe
PID 1180 wrote to memory of 1916	1180	rundll32.exe	rundll32.exe
PID 1180 wrote to memory of 1916	1180	rundll32.exe	rundll32.exe
PID 1180 wrote to memory of 1916	1180	rundll32.exe	rundll32.exe
PID 1180 wrote to memory of 1916	1180	rundll32.exe	rundll32.exe
PID 1180 wrote to memory of 1916	1180	rundll32.exe	rundll32.exe
PID 1180 wrote to memory of 1916	1180	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zk58h95.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1180

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zk58h95.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1916

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/1916-54-0x0000000000000000-mapping.dmp

Download
memory/1916-55-0x0000000076C81000-0x0000000076C83000-memory.dmp

Filesize
8KB

Download
memory/1916-56-0x00000000752B0000-0x00000000752ED000-memory.dmp

Filesize
244KB

Download
memory/1916-57-0x00000000752B0000-0x0000000075376000-memory.dmp

Filesize
792KB

Download
memory/1916-59-0x00000000752B0000-0x0000000075376000-memory.dmp

Filesize
792KB

Download
memory/1916-60-0x00000000752B0000-0x0000000075376000-memory.dmp

Filesize
792KB

Download