dridex | 8035b530d4c16bc534232b4d2843251fef2ef0d1d68bde32965088d1cdc5b031

Analysis

max time kernel
71s
max time network
73s
platform
windows7_x64
resource
win7v20201028
submitted
08-12-2020 16:13

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General

Target

f4ff765ab41db56376ba8ff3a9104140.dll
Size

413KB
MD5

f4ff765ab41db56376ba8ff3a9104140
SHA1

e6436254ef5fec9db4208d772f07c5f2153f5d4d
SHA256

8035b530d4c16bc534232b4d2843251fef2ef0d1d68bde32965088d1cdc5b031
SHA512

47dbfd3028daf8e93824ba868bb3e962e4be5b19a47ee16c07138b4d2b15fa9629cdb70527c22bdc53ba84f2c40acd045438794002e75b78ea06f63514303996

Score

10^/10

dridex 10555 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10555

104.131.164.93:443

46.101.90.205:4643

27.254.174.84:4443

92.94.251.127:3786

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/1444-3-0x0000000000320000-0x000000000035D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

3 1444 rundll32.exe
7 1444 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	1444	rundll32.exe
7	1444	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 2012 wrote to memory of 1444	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 1444	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 1444	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 1444	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 1444	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 1444	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 1444	2012	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f4ff765ab41db56376ba8ff3a9104140.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2012

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f4ff765ab41db56376ba8ff3a9104140.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1444

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/1444-2-0x0000000000000000-mapping.dmp

Download
memory/1444-3-0x0000000000320000-0x000000000035D000-memory.dmp

Filesize
244KB

Download
memory/1688-4-0x000007FEF7B20000-0x000007FEF7D9A000-memory.dmp

Filesize
2.5MB

Download