dridex | 5b77b62868a77cdb1397e83a3306e6bb3eac7d90f6aac4d27df2ab537353758e

Analysis

max time kernel
76s
max time network
133s
platform
windows7_x64
resource
win7v20201028
submitted
22/03/2021, 12:57

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General

Target
hya2l4.tar.dll
Size 372KB
Sample210322-11951en67a
SHA256 5b77b62868a77cdb1397e83a3306e6bb3eac7d90f6aac4d27df2ab537353758e
MD5 caab227ce21f24235c6d3bf435c57223
SHA1 086ad9abaf78576dec0449266ecffebcc6e72cc4
SHA512 c961b4dd68078a7f8b5942010420b85093f39978eb1f1bc73836b6672489a04315496bfb29c50167950694dd5e1a47b17ca79da65aad71ec8ab60837f5af334d
MD5 SHA1 SHA512

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

210.65.244.179:443
37.247.35.130:6601
103.18.108.116:6601

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

resource	yara_rule
behavioral1/memory/1768-4-0x00000000001D0000-0x000000000020D000-memory.dmp	dridex_ldr
behavioral1/memory/1768-5-0x00000000001D0000-0x000000000020D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

flow	pid	Process
5	1768	rundll32.exe
8	1768	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

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

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1040 wrote to memory of 1768	1040	rundll32.exe	25
PID 1040 wrote to memory of 1768	1040	rundll32.exe	25
PID 1040 wrote to memory of 1768	1040	rundll32.exe	25
PID 1040 wrote to memory of 1768	1040	rundll32.exe	25
PID 1040 wrote to memory of 1768	1040	rundll32.exe	25
PID 1040 wrote to memory of 1768	1040	rundll32.exe	25
PID 1040 wrote to memory of 1768	1040	rundll32.exe	25

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\hya2l4.tar.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1040
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\hya2l4.tar.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  PID:1768

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1652-7-0x000007FEF6B20000-0x000007FEF6D9A000-memory.dmp

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memory/1768-3-0x0000000076311000-0x0000000076313000-memory.dmp

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memory/1768-4-0x00000000001D0000-0x000000000020D000-memory.dmp

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memory/1768-5-0x00000000001D0000-0x000000000020D000-memory.dmp

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memory/1768-6-0x0000000000120000-0x0000000000121000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads