dridex | 1d8b5bf20413995710b67e5d4f1b252688d61407fba6acc44ffccc86f05f68b8

General

Target

1d8b5bf20413995710b67e5d4f1b252688d61407fba6acc44ffccc86f05f68b8.dll
Size

196KB
MD5

4e7e5be4cca7fc312944f293137f3222
SHA1

6d38daf21bc0786dc1a8788c5ee5b0707c77a65a
SHA256

1d8b5bf20413995710b67e5d4f1b252688d61407fba6acc44ffccc86f05f68b8
SHA512

104e0150240dd88af10258d89e738c52df45663415f94f566ed46bc43619517960fc935246713fc7bfb259757431dfe1fd02350b3fbf75cfe11e66b20cd508d1

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

C2

37.247.35.132:443

50.243.30.51:6601

162.241.204.234:6516

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
behavioral1/memory/1628-4-0x00000000747A0000-0x00000000747D3000-memory.dmp	dridex_ldr
behavioral1/memory/1628-6-0x00000000747A0000-0x00000000747BF000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

4 1628 rundll32.exe
7 1628 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	1628	rundll32.exe
7	1628	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 1752 wrote to memory of 1628	1752	rundll32.exe	rundll32.exe
PID 1752 wrote to memory of 1628	1752	rundll32.exe	rundll32.exe
PID 1752 wrote to memory of 1628	1752	rundll32.exe	rundll32.exe
PID 1752 wrote to memory of 1628	1752	rundll32.exe	rundll32.exe
PID 1752 wrote to memory of 1628	1752	rundll32.exe	rundll32.exe
PID 1752 wrote to memory of 1628	1752	rundll32.exe	rundll32.exe
PID 1752 wrote to memory of 1628	1752	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1d8b5bf20413995710b67e5d4f1b252688d61407fba6acc44ffccc86f05f68b8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1752

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1d8b5bf20413995710b67e5d4f1b252688d61407fba6acc44ffccc86f05f68b8.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1628

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1448-7-0x000007FEF7160000-0x000007FEF73DA000-memory.dmp

Filesize
2.5MB

Download
memory/1628-2-0x0000000000000000-mapping.dmp

Download
memory/1628-3-0x0000000075EB1000-0x0000000075EB3000-memory.dmp

Filesize
8KB

Download
memory/1628-4-0x00000000747A0000-0x00000000747D3000-memory.dmp

Filesize
204KB

Download
memory/1628-5-0x0000000000180000-0x0000000000186000-memory.dmp

Filesize
24KB

Download
memory/1628-6-0x00000000747A0000-0x00000000747BF000-memory.dmp

Filesize
124KB

Download

Analysis

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