dridex | 584535560c1edb7f31466ce2efacf0cd4ca94cb91929aaf08f22ac530071f88e

Analysis

max time kernel
275s
max time network
314s
platform
windows7_x64
resource
win7-en-20210920
submitted
20-10-2021 15:34

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General

Target

7_msdtckrm.dll
Size

180KB
MD5

78efcbf78180862250dda72701f2f1b1
SHA1

2bdef6651de6cd9ee884149b894141c95650b6e7
SHA256

972450a14781c1a1be59542e69585fa8548d2150ede9045009d1016472a34597
SHA512

e54569fda2f4aafc02c5bbd00012a0a83822d85c391378302d44008b0556ac6e1ab3d90bdf3148a9ad93d20886d0893403b877b71580f8f69c849bfc65b5f022

Score

10^/10

dridex 22202 botnet loader

Malware Config

Extracted

Family

dridex

Botnet

22202

155.138.203.91:443

207.180.220.242:8116

46.101.142.214:6891

rc4.plain

Signatures

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

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral5/memory/836-55-0x0000000074950000-0x000000007497F000-memory.dmp	dridex_ldr

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

332 836 WerFault.exe rundll32.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

WerFault.exe

pid process

332 WerFault.exe
332 WerFault.exe
332 WerFault.exe
332 WerFault.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 332 WerFault.exe

pid	pid_target	process	target process
332	836	WerFault.exe	rundll32.exe

pid	process
332	WerFault.exe
332	WerFault.exe
332	WerFault.exe
332	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	332	WerFault.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1484 wrote to memory of 836	1484	rundll32.exe	rundll32.exe
PID 1484 wrote to memory of 836	1484	rundll32.exe	rundll32.exe
PID 1484 wrote to memory of 836	1484	rundll32.exe	rundll32.exe
PID 1484 wrote to memory of 836	1484	rundll32.exe	rundll32.exe
PID 1484 wrote to memory of 836	1484	rundll32.exe	rundll32.exe
PID 1484 wrote to memory of 836	1484	rundll32.exe	rundll32.exe
PID 1484 wrote to memory of 836	1484	rundll32.exe	rundll32.exe
PID 836 wrote to memory of 332	836	rundll32.exe	WerFault.exe
PID 836 wrote to memory of 332	836	rundll32.exe	WerFault.exe
PID 836 wrote to memory of 332	836	rundll32.exe	WerFault.exe
PID 836 wrote to memory of 332	836	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7_msdtckrm.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1484

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7_msdtckrm.dll,#1
2⤵
- Suspicious use of WriteProcessMemory
PID:836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 836 -s 252
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:332

MITRE ATT&CK Matrix

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Downloads

memory/332-57-0x0000000000000000-mapping.dmp

Download
memory/332-59-0x0000000000330000-0x0000000000331000-memory.dmp

Filesize
4KB

Download
memory/836-53-0x0000000000000000-mapping.dmp

Download
memory/836-54-0x0000000076201000-0x0000000076203000-memory.dmp

Filesize
8KB

Download
memory/836-55-0x0000000074950000-0x000000007497F000-memory.dmp

Filesize
188KB

Download
memory/836-58-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download