dridex | a2599ff27e255a199db7c526b2973cdee7cdea22b852b2074157c3d0a0b7dfcc

General

Target

a2599ff27e255a199db7c526b2973cdee7cdea22b852b2074157c3d0a0b7dfcc.dll
Size

188KB
MD5

555869311347b1235f50d7054cdb8180
SHA1

0df5edb8d34be9f95960c55f652123451c079f72
SHA256

a2599ff27e255a199db7c526b2973cdee7cdea22b852b2074157c3d0a0b7dfcc
SHA512

dafe2e510b2f2f3f82df08d94bce77806ec6b206e8c9b86209dd86e65a2e30cb98994568881e5f59554cf8546f01a692b4406219ffed91ffb448d3d2a800dc1f

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/1688-4-0x00000000754A0000-0x00000000754D1000-memory.dmp	dridex_ldr
behavioral1/memory/1688-6-0x00000000754A0000-0x00000000754BF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

4 1688 rundll32.exe
7 1688 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	1688	rundll32.exe
7	1688	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 2028 wrote to memory of 1688	2028	rundll32.exe	rundll32.exe
PID 2028 wrote to memory of 1688	2028	rundll32.exe	rundll32.exe
PID 2028 wrote to memory of 1688	2028	rundll32.exe	rundll32.exe
PID 2028 wrote to memory of 1688	2028	rundll32.exe	rundll32.exe
PID 2028 wrote to memory of 1688	2028	rundll32.exe	rundll32.exe
PID 2028 wrote to memory of 1688	2028	rundll32.exe	rundll32.exe
PID 2028 wrote to memory of 1688	2028	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a2599ff27e255a199db7c526b2973cdee7cdea22b852b2074157c3d0a0b7dfcc.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a2599ff27e255a199db7c526b2973cdee7cdea22b852b2074157c3d0a0b7dfcc.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1688

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/1612-7-0x000007FEF6B90000-0x000007FEF6E0A000-memory.dmp

Filesize
2.5MB

Download
memory/1688-2-0x0000000000000000-mapping.dmp

Download
memory/1688-3-0x0000000075C31000-0x0000000075C33000-memory.dmp

Filesize
8KB

Download
memory/1688-4-0x00000000754A0000-0x00000000754D1000-memory.dmp

Filesize
196KB

Download
memory/1688-5-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download
memory/1688-6-0x00000000754A0000-0x00000000754BF000-memory.dmp

Filesize
124KB

Download

Analysis

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