dridex | 75c73ab948e50702363e0eccbe49051b38807f3e78790a95bcae1cea4ae3bcbc

Analysis

max time kernel
71s
max time network
128s
platform
windows7_x64
resource
win7v20201028
submitted
02-11-2020 16:45

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General

Target

yyvwjrxk.dll
Size

551KB
MD5

30a9282bf77aca1fcad347596364f456
SHA1

79a4c1db15260ab9912c59eef7c595ee5e5abf86
SHA256

75c73ab948e50702363e0eccbe49051b38807f3e78790a95bcae1cea4ae3bcbc
SHA512

254aa6bb60244ba5bb6210f8a1a84a52200c70cf91644c7db829ce206623d6b838e846efa95b57c2b41b7ce4ab630d4a8bbb2d6f2e46616d59e393b36e0a27b9

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

195.154.237.245:443

46.105.131.73:8172

91.238.160.158:18443

213.183.128.99:3786

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

Processes:

resource	yara_rule
behavioral1/memory/2036-1-0x0000000000750000-0x000000000078D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

4 2036 rundll32.exe
7 2036 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	2036	rundll32.exe
7	2036	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 1688 wrote to memory of 2036	1688	rundll32.exe	rundll32.exe
PID 1688 wrote to memory of 2036	1688	rundll32.exe	rundll32.exe
PID 1688 wrote to memory of 2036	1688	rundll32.exe	rundll32.exe
PID 1688 wrote to memory of 2036	1688	rundll32.exe	rundll32.exe
PID 1688 wrote to memory of 2036	1688	rundll32.exe	rundll32.exe
PID 1688 wrote to memory of 2036	1688	rundll32.exe	rundll32.exe
PID 1688 wrote to memory of 2036	1688	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\yyvwjrxk.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1688

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\yyvwjrxk.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:2036

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/1632-2-0x000007FEF7080000-0x000007FEF72FA000-memory.dmp

Filesize
2.5MB

Download
memory/2036-0-0x0000000000000000-mapping.dmp

Download
memory/2036-1-0x0000000000750000-0x000000000078D000-memory.dmp

Filesize
244KB

Download