dridex | b2f48595ae38d3f3a3321078d96b2a752fa9cbcc12ff8e8fd516457e0d089ecb

Analysis

max time kernel
90s
max time network
141s
platform
windows10_x64
resource
win10v20201028
submitted
03-03-2021 19:06

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General

Target

b2f48595ae38d3f3a3321078d96b2a752fa9cbcc12ff8e8fd516457e0d089ecb.dll
Size

188KB
MD5

57813dca98f40a2c9a1efb9c87b65d35
SHA1

264ad41abad04f7a4e2d4106a835df9c48d04a9e
SHA256

b2f48595ae38d3f3a3321078d96b2a752fa9cbcc12ff8e8fd516457e0d089ecb
SHA512

85fbe9084a4ecfbc129b0f643990cf462baee3ba096edbd86deddea4c57c348a7dc95d617c654650d44da4b759971f76876d6a3ab1bb935fcacdfb2c005285ac

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

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
behavioral2/memory/3964-3-0x0000000073540000-0x0000000073571000-memory.dmp	dridex_ldr
behavioral2/memory/3964-5-0x0000000073540000-0x000000007355F000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

16 3964 rundll32.exe
18 3964 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
16	3964	rundll32.exe
18	3964	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 796 wrote to memory of 3964	796	rundll32.exe	rundll32.exe
PID 796 wrote to memory of 3964	796	rundll32.exe	rundll32.exe
PID 796 wrote to memory of 3964	796	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b2f48595ae38d3f3a3321078d96b2a752fa9cbcc12ff8e8fd516457e0d089ecb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:796

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b2f48595ae38d3f3a3321078d96b2a752fa9cbcc12ff8e8fd516457e0d089ecb.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:3964

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/3964-2-0x0000000000000000-mapping.dmp

Download
memory/3964-3-0x0000000073540000-0x0000000073571000-memory.dmp

Filesize
196KB

Download
memory/3964-4-0x0000000003230000-0x0000000003236000-memory.dmp

Filesize
24KB

Download
memory/3964-5-0x0000000073540000-0x000000007355F000-memory.dmp

Filesize
124KB

Download