dridex | 5d844206e982fdaffa520c57c847635102ddf72d893fe896d42581c41c2cfb91

Analysis

max time kernel
7s
max time network
72s
platform
windows7_x64
resource
win7
submitted
08/10/2020, 12:14

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General

Target
5f494117cc701acec3c30f7f318e5584.dll
Size 539KB
Sample201008-tlcsfklps6
SHA256 5d844206e982fdaffa520c57c847635102ddf72d893fe896d42581c41c2cfb91
MD5 5f494117cc701acec3c30f7f318e5584
SHA1 5659071cebd551acc10a924967a62f15ed798d50
SHA512 a1ef4f33a7975d3fcf0e1c4a87054be42426fd812396e8b8b0d5fb23e49c06bcdb363d1f4a36c98f097528c9646451b7c523f376ac097ef85855d5420ecce711
MD5 SHA1 SHA512

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

177.87.70.3:443
213.133.102.195:3889
27.254.174.93:33443
27.254.174.77:4443

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

resource	yara_rule
behavioral1/memory/1620-1-0x0000000000770000-0x00000000007AD000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

flow	pid	Process
3	1620	rundll32.exe
6	1620	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 1324 wrote to memory of 1620	1324	rundll32.exe	24
PID 1324 wrote to memory of 1620	1324	rundll32.exe	24
PID 1324 wrote to memory of 1620	1324	rundll32.exe	24
PID 1324 wrote to memory of 1620	1324	rundll32.exe	24
PID 1324 wrote to memory of 1620	1324	rundll32.exe	24
PID 1324 wrote to memory of 1620	1324	rundll32.exe	24
PID 1324 wrote to memory of 1620	1324	rundll32.exe	24

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5f494117cc701acec3c30f7f318e5584.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1324
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\5f494117cc701acec3c30f7f318e5584.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1620

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/1620-1-0x0000000000770000-0x00000000007AD000-memory.dmp

Download

memory/1628-2-0x000007FEF63E0000-0x000007FEF665A000-memory.dmp