dridex | 869b91baffa64a8234cf036970ae4f3c5deddd011c09aed3aefd83dbcd4b5d28

Analysis

max time kernel
123s
max time network
125s
platform
windows7_x64
resource
win7v20201028
submitted
24/02/2021, 15:37

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General

Target
869b91baffa64a8234cf036970ae4f3c5deddd011c09aed3aefd83dbcd4b5d28.dll
Size 188KB
Sample210224-s29levavwe
SHA256 869b91baffa64a8234cf036970ae4f3c5deddd011c09aed3aefd83dbcd4b5d28
MD5 5dadd856317d426d19fc71b188531123
SHA1 cd236c11ccd6d4d281e2960830d7b5987a1d369d
SHA512 c9284ac7fa444db6f634f12ce86bf16b24a6f52f9d4ba5df175ec893e6a40e18e4387e352010602cc3e20124d1c32e77da92214d52896291b561c445b805d208
MD5 SHA1 SHA512

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

209.151.236.42:443
91.121.94.86:8172
5.189.144.136:6516

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex

Dridex Loader 2 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

resource	yara_rule
behavioral1/memory/1336-5-0x0000000074AE0000-0x0000000074B11000-memory.dmp	dridex_ldr
behavioral1/memory/1336-7-0x0000000074AE0000-0x0000000074AFF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

flow	pid	Process
7	1336	rundll32.exe
9	1336	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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1424 wrote to memory of 1336	1424	rundll32.exe	25
PID 1424 wrote to memory of 1336	1424	rundll32.exe	25
PID 1424 wrote to memory of 1336	1424	rundll32.exe	25
PID 1424 wrote to memory of 1336	1424	rundll32.exe	25
PID 1424 wrote to memory of 1336	1424	rundll32.exe	25
PID 1424 wrote to memory of 1336	1424	rundll32.exe	25
PID 1424 wrote to memory of 1336	1424	rundll32.exe	25

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\869b91baffa64a8234cf036970ae4f3c5deddd011c09aed3aefd83dbcd4b5d28.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1424
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\869b91baffa64a8234cf036970ae4f3c5deddd011c09aed3aefd83dbcd4b5d28.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1336

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

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Downloads

memory/1336-3-0x0000000075BF1000-0x0000000075BF3000-memory.dmp

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memory/1336-4-0x0000000074770000-0x0000000074913000-memory.dmp

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memory/1336-5-0x0000000074AE0000-0x0000000074B11000-memory.dmp

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memory/1336-6-0x0000000000170000-0x0000000000176000-memory.dmp

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memory/1336-7-0x0000000074AE0000-0x0000000074AFF000-memory.dmp

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memory/1940-8-0x000007FEF61D0000-0x000007FEF644A000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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