dridex | 77419f5d237715b7664ae53e806dea7465cdb6159f76a462fc31fcd731db5f2b

Analysis

max time kernel
142s
max time network
143s
platform
windows7_x64
resource
win7v20201028
submitted
19-11-2020 06:07

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General

Target

bc6a1086dc70c9b4daf3aede77f5a6de.dll
Size

539KB
MD5

bc6a1086dc70c9b4daf3aede77f5a6de
SHA1

e491822425fa66e97101c1f81fc7893ff55cf191
SHA256

77419f5d237715b7664ae53e806dea7465cdb6159f76a462fc31fcd731db5f2b
SHA512

3823f0a979cef5d7e1b86eb2c188244e1fc4d19b10358fb905a180e1dfa31aaf5e8236e068ca21a6c80fd3aacd12e50214608561b3391dc16aa1861ec02d0e9d

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/1900-1-0x0000000000270000-0x00000000002AD000-memory.dmp	dridex_ldr

Blocklisted process makes network request 4 IoCs

Processes:

rundll32.exe

flow pid process

4 1900 rundll32.exe
7 1900 rundll32.exe
8 1900 rundll32.exe
9 1900 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	1900	rundll32.exe
7	1900	rundll32.exe
8	1900	rundll32.exe
9	1900	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 344 wrote to memory of 1900	344	rundll32.exe	rundll32.exe
PID 344 wrote to memory of 1900	344	rundll32.exe	rundll32.exe
PID 344 wrote to memory of 1900	344	rundll32.exe	rundll32.exe
PID 344 wrote to memory of 1900	344	rundll32.exe	rundll32.exe
PID 344 wrote to memory of 1900	344	rundll32.exe	rundll32.exe
PID 344 wrote to memory of 1900	344	rundll32.exe	rundll32.exe
PID 344 wrote to memory of 1900	344	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bc6a1086dc70c9b4daf3aede77f5a6de.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:344

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bc6a1086dc70c9b4daf3aede77f5a6de.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1900

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/1340-2-0x000007FEF7590000-0x000007FEF780A000-memory.dmp

Filesize
2.5MB

Download
memory/1900-0-0x0000000000000000-mapping.dmp

Download
memory/1900-1-0x0000000000270000-0x00000000002AD000-memory.dmp

Filesize
244KB

Download