dridex | 8d34c75f8d69675eb0bb94b920f4688a0e3b2c40006378e8f0c375f89ed4f298

Analysis

max time kernel
110s
max time network
45s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-09-2024 18:13

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General

Target

78de41633c563cfbd6cafcdf308c0350N.dll
Size

236KB
MD5

78de41633c563cfbd6cafcdf308c0350
SHA1

9332c003b2508611cfafbfc55704ea82895395a7
SHA256

8d34c75f8d69675eb0bb94b920f4688a0e3b2c40006378e8f0c375f89ed4f298
SHA512

5a2151265b93ca9aa133762134cdc256f59a6fd0f193dcc318088dd9282802a19c559ceed970c075534ab67c561ec1bd183efe0b4c827c4a6ad6c19902bbaeeb
SSDEEP

6144:84V3yyQTz8ITeRDZSw3D2Fsd1u/6mv5/dC:8ciyQTdT+swTgt/6c/dC

Score

10^/10

dridex 111 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

111

77.220.64.40:443

8.4.9.152:3786

185.246.87.202:3098

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex

Dridex Loader 3 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral1/memory/1192-1-0x0000000074F20000-0x0000000074F5D000-memory.dmp	dridex_ldr
behavioral1/memory/1192-2-0x0000000074F20000-0x0000000074F5D000-memory.dmp	dridex_ldr
behavioral1/memory/1192-7-0x0000000074F20000-0x0000000074F5D000-memory.dmp	dridex_ldr

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

3 1192 rundll32.exe
7 1192 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
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
discovery

System Language Discovery
T1614.001

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe

flow	pid	process
3	1192	rundll32.exe
7	1192	rundll32.exe

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

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 2540 wrote to memory of 1192	2540	rundll32.exe	rundll32.exe
PID 2540 wrote to memory of 1192	2540	rundll32.exe	rundll32.exe
PID 2540 wrote to memory of 1192	2540	rundll32.exe	rundll32.exe
PID 2540 wrote to memory of 1192	2540	rundll32.exe	rundll32.exe
PID 2540 wrote to memory of 1192	2540	rundll32.exe	rundll32.exe
PID 2540 wrote to memory of 1192	2540	rundll32.exe	rundll32.exe
PID 2540 wrote to memory of 1192	2540	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\78de41633c563cfbd6cafcdf308c0350N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\78de41633c563cfbd6cafcdf308c0350N.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Checks whether UAC is enabled
  - System Location Discovery: System Language Discovery
  PID:1192

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1192-0-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1192-1-0x0000000074F20000-0x0000000074F5D000-memory.dmp

Filesize
244KB

Download
memory/1192-2-0x0000000074F20000-0x0000000074F5D000-memory.dmp

Filesize
244KB

Download
memory/1192-3-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1192-7-0x0000000074F20000-0x0000000074F5D000-memory.dmp

Filesize
244KB

Download