dridex | b637b9b13f710e227a77ef83ec4d37f1d0cb50d1664d17a378595cb9f89e63fb

Analysis

max time kernel
113s
max time network
115s
platform
windows10_x64
resource
win10v20210410
submitted
21-04-2021 17:56

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General

Target

b637b9b13f710e227a77ef83ec4d37f1d0cb50d1664d17a378595cb9f89e63fb.dll
Size

157KB
MD5

4dff4bca62e3c5f32dd927abfbca3afc
SHA1

5b6fc128025a124d0bb395c78d8b617c1b6b75e6
SHA256

b637b9b13f710e227a77ef83ec4d37f1d0cb50d1664d17a378595cb9f89e63fb
SHA512

29b863caa8c6d48995f2d3fa01816822988fdcbe0b64c2b3ebcb3522898ab837e5d24e5ffa428c715f95f6a4fe33270bd7a8db86873223b4b411c40804601ee0

Score

10^/10

dridex 40112 botnet evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

40112

159.8.59.82:443

51.91.156.39:2303

67.196.50.240:8172

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/1724-115-0x0000000073A90000-0x0000000073ABD000-memory.dmp	dridex_ldr

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

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 3904 wrote to memory of 1724	3904	rundll32.exe	rundll32.exe
PID 3904 wrote to memory of 1724	3904	rundll32.exe	rundll32.exe
PID 3904 wrote to memory of 1724	3904	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b637b9b13f710e227a77ef83ec4d37f1d0cb50d1664d17a378595cb9f89e63fb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3904

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b637b9b13f710e227a77ef83ec4d37f1d0cb50d1664d17a378595cb9f89e63fb.dll,#1
2⤵
- Checks whether UAC is enabled
PID:1724

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1724-114-0x0000000000000000-mapping.dmp

Download
memory/1724-115-0x0000000073A90000-0x0000000073ABD000-memory.dmp

Filesize
180KB

Download
memory/1724-117-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download