dridex | b3dbdfe68df9ff59d5dbf2fe5cfa1af03af7b3aa88f300af63457947c1e515d0

Analysis

max time kernel
124s
max time network
126s
platform
windows10_x64
resource
win10-en-20211014
submitted
18-10-2021 17:53

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General

Target

9_dsauth.dll
Size

244KB
MD5

bad08e3e2cd605bb4143b859a0adb9f0
SHA1

59386f864987dcfd1d74354e6fb98031a24829b4
SHA256

b3dbdfe68df9ff59d5dbf2fe5cfa1af03af7b3aa88f300af63457947c1e515d0
SHA512

a9870cd45e884160cded25607ec60b632cc73173ebe919bad1d67a6181956219fba504eb8f56002be8fd29da3ec89e4111753de6abb42719e448c33208dc4b44

Score

10^/10

dridex 22201 botnet loader

Malware Config

Extracted

Family

dridex

Botnet

22201

195.154.146.84:443

45.56.121.87:8116

157.245.222.44:5723

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/2756-120-0x0000000073870000-0x000000007389F000-memory.dmp	dridex_ldr
behavioral2/memory/2756-121-0x0000000073870000-0x00000000738AE000-memory.dmp	dridex_ldr

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2280 2756 WerFault.exe rundll32.exe

pid	pid_target	process	target process
2280	2756	WerFault.exe	rundll32.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

WerFault.exe

pid	process
2280	WerFault.exe
2280	WerFault.exe
2280	WerFault.exe
2280	WerFault.exe
2280	WerFault.exe
2280	WerFault.exe
2280	WerFault.exe
2280	WerFault.exe
2280	WerFault.exe
2280	WerFault.exe
2280	WerFault.exe
2280	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 2280 WerFault.exe
Token: SeBackupPrivilege 2280 WerFault.exe
Token: SeDebugPrivilege 2280 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	2280	WerFault.exe
Token: SeBackupPrivilege	2280	WerFault.exe
Token: SeDebugPrivilege	2280	WerFault.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1828 wrote to memory of 2756	1828	rundll32.exe	rundll32.exe
PID 1828 wrote to memory of 2756	1828	rundll32.exe	rundll32.exe
PID 1828 wrote to memory of 2756	1828	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9_dsauth.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1828

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9_dsauth.dll,#1
2⤵
PID:2756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2756 -s 616
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2280

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/2756-115-0x0000000000000000-mapping.dmp

Download
memory/2756-116-0x0000000073870000-0x00000000738AE000-memory.dmp

Filesize
248KB

Download
memory/2756-119-0x00000000023B0000-0x00000000023B6000-memory.dmp

Filesize
24KB

Download
memory/2756-120-0x0000000073870000-0x000000007389F000-memory.dmp

Filesize
188KB

Download
memory/2756-121-0x0000000073870000-0x00000000738AE000-memory.dmp

Filesize
248KB

Download
memory/2756-122-0x0000000002600000-0x000000000274A000-memory.dmp

Filesize
1.3MB

Download