dridex | 39668b9a757b8630bb93a262b37d28af4f93149c4e58fc0f5867ab8a6b02dce0

General

Target

39668b9a757b8630bb93a262b37d28af4f93149c4e58fc0f5867ab8a6b02dce0.dll
Size

188KB
MD5

8c2873ff2254cfcb93d99e6624a42faa
SHA1

35ae7607ba170492222d3b7ead312e3454d9434e
SHA256

39668b9a757b8630bb93a262b37d28af4f93149c4e58fc0f5867ab8a6b02dce0
SHA512

7ee00ec031591f8894ddb3fd2ff0f24cd233b4b2770d50de63754d53546c1a79784833be5631334d3bba6bd6a353f00657f3e55b47b793ad3c5f2d91a3895aae

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

C2

116.251.211.158:443

216.10.242.142:6601

37.247.35.137:6601

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

Processes:

resource	yara_rule
behavioral1/memory/2008-4-0x0000000075300000-0x0000000075331000-memory.dmp	dridex_ldr
behavioral1/memory/2008-6-0x0000000075300000-0x000000007531F000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

4 2008 rundll32.exe
7 2008 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	2008	rundll32.exe
7	2008	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 1616 wrote to memory of 2008	1616	rundll32.exe	rundll32.exe
PID 1616 wrote to memory of 2008	1616	rundll32.exe	rundll32.exe
PID 1616 wrote to memory of 2008	1616	rundll32.exe	rundll32.exe
PID 1616 wrote to memory of 2008	1616	rundll32.exe	rundll32.exe
PID 1616 wrote to memory of 2008	1616	rundll32.exe	rundll32.exe
PID 1616 wrote to memory of 2008	1616	rundll32.exe	rundll32.exe
PID 1616 wrote to memory of 2008	1616	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\39668b9a757b8630bb93a262b37d28af4f93149c4e58fc0f5867ab8a6b02dce0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1616
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\39668b9a757b8630bb93a262b37d28af4f93149c4e58fc0f5867ab8a6b02dce0.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:2008

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1704-7-0x000007FEF7BD0000-0x000007FEF7E4A000-memory.dmp

Filesize
2.5MB

Download
memory/2008-2-0x0000000000000000-mapping.dmp

Download
memory/2008-3-0x00000000765A1000-0x00000000765A3000-memory.dmp

Filesize
8KB

Download
memory/2008-4-0x0000000075300000-0x0000000075331000-memory.dmp

Filesize
196KB

Download
memory/2008-5-0x0000000000140000-0x0000000000146000-memory.dmp

Filesize
24KB

Download
memory/2008-6-0x0000000075300000-0x000000007531F000-memory.dmp

Filesize
124KB

Download

Analysis

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