dridex | 0b1d65243616e6e7dd9804775739f945cc67e80018a9584139efc45698a20185

General

Target

zdnnagb.dll
Size

1.1MB
MD5

bcdb8892ade3fbcef1e017b8c8acca6a
SHA1

e206f3101ea0ba57a23507148e8770b8e6815272
SHA256

0b1d65243616e6e7dd9804775739f945cc67e80018a9584139efc45698a20185
SHA512

31ecf280c0569d3c2c03fcb32619768535eee199e03a67f10be4a308ba4f533cfa0a79ab8e70d146f85dffe9b6b5d16869e2c65b4504afb7ffea424f4c0cbf82

Score

10^/10

dridex 10444 botnet discovery evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

10444

C2

146.185.170.249:443

62.75.251.60:6601

185.148.168.25:2303

rc4.plain

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex
Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 1276 created 4820 1276 WerFault.exe rundll32.exe

description	pid	process	target process
PID 1276 created 4820	1276	WerFault.exe	rundll32.exe

Dridex Loader 2 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/4820-115-0x0000000073B30000-0x0000000073B6D000-memory.dmp	dridex_ldr
behavioral2/memory/4820-116-0x0000000073B30000-0x0000000073C58000-memory.dmp	dridex_ldr

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
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1276 4820 WerFault.exe rundll32.exe

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

pid	pid_target	process	target process
1276	4820	WerFault.exe	rundll32.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

WerFault.exe

pid	process
1276	WerFault.exe
1276	WerFault.exe
1276	WerFault.exe
1276	WerFault.exe
1276	WerFault.exe
1276	WerFault.exe
1276	WerFault.exe
1276	WerFault.exe
1276	WerFault.exe
1276	WerFault.exe
1276	WerFault.exe
1276	WerFault.exe
1276	WerFault.exe
1276	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 1276 WerFault.exe
Token: SeBackupPrivilege 1276 WerFault.exe
Token: SeDebugPrivilege 1276 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	1276	WerFault.exe
Token: SeBackupPrivilege	1276	WerFault.exe
Token: SeDebugPrivilege	1276	WerFault.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 4660 wrote to memory of 4820	4660	rundll32.exe	rundll32.exe
PID 4660 wrote to memory of 4820	4660	rundll32.exe	rundll32.exe
PID 4660 wrote to memory of 4820	4660	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zdnnagb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4660

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zdnnagb.dll,#1
2⤵
- Checks whether UAC is enabled
PID:4820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 840
3⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1276

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

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Downloads

memory/4820-114-0x0000000000000000-mapping.dmp

Download
memory/4820-115-0x0000000073B30000-0x0000000073B6D000-memory.dmp

Filesize
244KB

Download
memory/4820-116-0x0000000073B30000-0x0000000073C58000-memory.dmp

Filesize
1.2MB

Download
memory/4820-179-0x0000000000C40000-0x0000000000C41000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads