dridex | d4621f06232d8942fbe8ec42a295028d89f277633354d900071f53179684f227

Analysis

max time kernel
58s
max time network
115s
platform
windows7_x64
resource
win7v20201028
submitted
09-11-2020 12:52

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General

Target

bvht1xpdf.dll
Size

1.2MB
MD5

9a821fc91c5053a2b52dbb0c16f89dc0
SHA1

d10adfc10ab68859e02d21a551d1f4ea6f0ff5c9
SHA256

d4621f06232d8942fbe8ec42a295028d89f277633354d900071f53179684f227
SHA512

db8ee3ac8168a7d83e93af78f81af97cdce9cfa52e6d4d1bf7027ee46ecf6e40e91982be4332167fd23d15ea937fe6b2c5c1c51e4d74c04e159c422b110219e3

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

94.126.8.2:443

37.187.161.206:33443

209.59.199.129:4443

157.245.130.146:3786

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/1840-1-0x0000000074420000-0x000000007445D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

4 1840 rundll32.exe
7 1840 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
4	1840	rundll32.exe
7	1840	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 364 wrote to memory of 1840	364	rundll32.exe	rundll32.exe
PID 364 wrote to memory of 1840	364	rundll32.exe	rundll32.exe
PID 364 wrote to memory of 1840	364	rundll32.exe	rundll32.exe
PID 364 wrote to memory of 1840	364	rundll32.exe	rundll32.exe
PID 364 wrote to memory of 1840	364	rundll32.exe	rundll32.exe
PID 364 wrote to memory of 1840	364	rundll32.exe	rundll32.exe
PID 364 wrote to memory of 1840	364	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bvht1xpdf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:364

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bvht1xpdf.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1840

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/1344-2-0x000007FEF6EA0000-0x000007FEF711A000-memory.dmp

Filesize
2.5MB

Download
memory/1840-0-0x0000000000000000-mapping.dmp

Download
memory/1840-1-0x0000000074420000-0x000000007445D000-memory.dmp

Filesize
244KB

Download