dridex | 78fefe4cb80f5c6357bd5aa7bedaaa7fd18aca0c8b83f205ff31f40dd7d22e9b

Analysis

max time kernel
138s
max time network
138s
platform
windows10_x64
resource
win10v20201028
submitted
03-03-2021 19:05

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General

Target

78fefe4cb80f5c6357bd5aa7bedaaa7fd18aca0c8b83f205ff31f40dd7d22e9b.dll
Size

188KB
MD5

426dc1b325fb713fb52f260bb7b00f35
SHA1

165f9eb968801cdf62b08414f699d349f086e49b
SHA256

78fefe4cb80f5c6357bd5aa7bedaaa7fd18aca0c8b83f205ff31f40dd7d22e9b
SHA512

f9c4fe825698de14c11dba1c0e66a251222018e001695527211ec5e450aa0a6d19f31ce5d2679903a1e0019d4a3f7750d9062e5b80b931b8ae1b3f9478ff080b

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/4744-3-0x0000000073890000-0x00000000738C1000-memory.dmp	dridex_ldr
behavioral2/memory/4744-5-0x0000000073890000-0x00000000738AF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

13 4744 rundll32.exe
15 4744 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
13	4744	rundll32.exe
15	4744	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 4688 wrote to memory of 4744	4688	rundll32.exe	rundll32.exe
PID 4688 wrote to memory of 4744	4688	rundll32.exe	rundll32.exe
PID 4688 wrote to memory of 4744	4688	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\78fefe4cb80f5c6357bd5aa7bedaaa7fd18aca0c8b83f205ff31f40dd7d22e9b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4688

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\78fefe4cb80f5c6357bd5aa7bedaaa7fd18aca0c8b83f205ff31f40dd7d22e9b.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:4744

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/4744-2-0x0000000000000000-mapping.dmp

Download
memory/4744-3-0x0000000073890000-0x00000000738C1000-memory.dmp

Filesize
196KB

Download
memory/4744-4-0x0000000000870000-0x0000000000876000-memory.dmp

Filesize
24KB

Download
memory/4744-5-0x0000000073890000-0x00000000738AF000-memory.dmp

Filesize
124KB

Download