dridex | 91ec1dc8388d875e6f18ec00e281660b322f2ed66d6e151f70640e67bef417a9

Analysis

max time kernel
33s
max time network
146s
platform
windows10_x64
resource
win10v20201028
submitted
24-02-2021 23:40

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General

Target

91ec1dc8388d875e6f18ec00e281660b322f2ed66d6e151f70640e67bef417a9.dll
Size

188KB
MD5

6bb3d3c50185397dce401e586755cadc
SHA1

91abb28ad1d0ed8f8c637bd5a7f85e587f24453a
SHA256

91ec1dc8388d875e6f18ec00e281660b322f2ed66d6e151f70640e67bef417a9
SHA512

8ac9cdd1a8100a6c93a428f66b7037713a60850af632cda5a4d08c5c81af60fa35098e76ebe09334f68df88700410df0e6d0ee93d555af1efd4fd25315b296e3

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

209.151.236.42:443

91.121.94.86:8172

5.189.144.136:6516

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
behavioral2/memory/3772-3-0x0000000074000000-0x0000000074031000-memory.dmp	dridex_ldr
behavioral2/memory/3772-5-0x0000000074000000-0x000000007401F000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

22 3772 rundll32.exe
24 3772 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
22	3772	rundll32.exe
24	3772	rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 3636 wrote to memory of 3772	3636	rundll32.exe	rundll32.exe
PID 3636 wrote to memory of 3772	3636	rundll32.exe	rundll32.exe
PID 3636 wrote to memory of 3772	3636	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\91ec1dc8388d875e6f18ec00e281660b322f2ed66d6e151f70640e67bef417a9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3636

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\91ec1dc8388d875e6f18ec00e281660b322f2ed66d6e151f70640e67bef417a9.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:3772

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/3772-2-0x0000000000000000-mapping.dmp

Download
memory/3772-3-0x0000000074000000-0x0000000074031000-memory.dmp

Filesize
196KB

Download
memory/3772-4-0x0000000002C40000-0x0000000002C46000-memory.dmp

Filesize
24KB

Download
memory/3772-5-0x0000000074000000-0x000000007401F000-memory.dmp

Filesize
124KB

Download