dridex | f5951b345050e10fa0d3b70b42e6b56d5a720a7a67c381345e33c145e2ba2452

Analysis

max time kernel
136s
max time network
139s
platform
windows7_x64
resource
win7v20201028
submitted
19-11-2020 18:05

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General

Target

ef5ai1p.dll
Size

539KB
MD5

1ba0b20a2d03d8af03a7faa42b06417f
SHA1

4c528bb2afd93d8cb1199d05dc33d77e08f0ee88
SHA256

f5951b345050e10fa0d3b70b42e6b56d5a720a7a67c381345e33c145e2ba2452
SHA512

5447e2424e0beeace8c1d3de285fcd841b184e9ed1b3035334fd3005399aa0947b5688a22754b9114ff3f9444906481a519477fbd9cfdb17f23136ad14f6eef3

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

162.241.44.26:9443

192.232.229.53:4443

77.220.64.34:443

193.90.12.121:3098

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/840-1-0x0000000000360000-0x000000000039D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

3 840 rundll32.exe
7 840 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
3	840	rundll32.exe
7	840	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 1980 wrote to memory of 840	1980	rundll32.exe	rundll32.exe
PID 1980 wrote to memory of 840	1980	rundll32.exe	rundll32.exe
PID 1980 wrote to memory of 840	1980	rundll32.exe	rundll32.exe
PID 1980 wrote to memory of 840	1980	rundll32.exe	rundll32.exe
PID 1980 wrote to memory of 840	1980	rundll32.exe	rundll32.exe
PID 1980 wrote to memory of 840	1980	rundll32.exe	rundll32.exe
PID 1980 wrote to memory of 840	1980	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef5ai1p.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1980

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef5ai1p.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:840

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/840-0-0x0000000000000000-mapping.dmp

Download
memory/840-1-0x0000000000360000-0x000000000039D000-memory.dmp

Filesize
244KB

Download
memory/1008-2-0x000007FEF7810000-0x000007FEF7A8A000-memory.dmp

Filesize
2.5MB

Download