dridex | e56c7afb6712cd3edda9400e15c8834477a26443575404b22bb92b137289c1b9

Analysis

max time kernel
98s
max time network
137s
platform
windows7_x64
resource
win7-20220414-en
submitted
11-06-2022 16:51

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General

Target

obkj7jnd.dll
Size

785KB
MD5

7b06c3c759dca98845688da6a0feada1
SHA1

dbb10b7a3bbca728c1e085183a70aa0fa1e72eb7
SHA256

e56c7afb6712cd3edda9400e15c8834477a26443575404b22bb92b137289c1b9
SHA512

851b3c23e86e2f9925084180bca828c7d9f3f595a3ee683a828d2a8e1726ec6f3f498d1f3be25c231ad7fb6a763d3aff89d6a6e142ea62e9e7df51c3fcc3c4c1

Score

10^/10

dridex 10444 botnet discovery evasion trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

209.20.87.138:443

198.1.115.153:8172

151.236.29.248:6516

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex
Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

3 1764 rundll32.exe
5 1764 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	1764	rundll32.exe
5	1764	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 1984 wrote to memory of 1764	1984	rundll32.exe	rundll32.exe
PID 1984 wrote to memory of 1764	1984	rundll32.exe	rundll32.exe
PID 1984 wrote to memory of 1764	1984	rundll32.exe	rundll32.exe
PID 1984 wrote to memory of 1764	1984	rundll32.exe	rundll32.exe
PID 1984 wrote to memory of 1764	1984	rundll32.exe	rundll32.exe
PID 1984 wrote to memory of 1764	1984	rundll32.exe	rundll32.exe
PID 1984 wrote to memory of 1764	1984	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\obkj7jnd.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1984

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\obkj7jnd.dll,#1
2⤵
- Blocklisted process makes network request
- Checks whether UAC is enabled
PID:1764

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/1764-54-0x0000000000000000-mapping.dmp

Download
memory/1764-55-0x0000000075BF1000-0x0000000075BF3000-memory.dmp

Filesize
8KB

Download
memory/1764-56-0x00000000752A0000-0x00000000752DD000-memory.dmp

Filesize
244KB

Download
memory/1764-57-0x00000000752A0000-0x00000000753BB000-memory.dmp

Filesize
1.1MB

Download
memory/1764-59-0x00000000752A0000-0x00000000753BB000-memory.dmp

Filesize
1.1MB

Download
memory/1764-60-0x00000000752A0000-0x00000000753BB000-memory.dmp

Filesize
1.1MB

Download