dridex | efbd76616dc1cd8210a8c54611f4ffa88e635f0f6ded2f8ff48311737635edda

Analysis

max time kernel
120s
max time network
124s
platform
windows10_x64
resource
win10-en-20211208
submitted
24-12-2021 01:12

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General

Target

bfnigger.bin.dll
Size

552KB
MD5

63c22ce32346e029fa5a1ec1ae619d0f
SHA1

222cf86c3b59f466292bb734be308cda77c3ddff
SHA256

efbd76616dc1cd8210a8c54611f4ffa88e635f0f6ded2f8ff48311737635edda
SHA512

413efdf48b13d8cd6cb9f799215a7c34588995ba5f48c4db855ad332c3b4b6b7c753ff361d0cd850a728ec68c76b47e96aaac604f3bdb069920d930c422bd0f4

Score

10^/10

dridex 22201 botnet loader

Malware Config

Extracted

Family

dridex

Botnet

22201

144.91.122.102:443

85.10.248.28:593

185.4.135.27:5228

80.211.3.13:8116

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
behavioral2/memory/3652-116-0x0000000073640000-0x00000000736CC000-memory.dmp	dridex_ldr

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

800 3652 WerFault.exe rundll32.exe

pid	pid_target	process	target process
800	3652	WerFault.exe	rundll32.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

WerFault.exe

pid	process
800	WerFault.exe
800	WerFault.exe
800	WerFault.exe
800	WerFault.exe
800	WerFault.exe
800	WerFault.exe
800	WerFault.exe
800	WerFault.exe
800	WerFault.exe
800	WerFault.exe
800	WerFault.exe
800	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 800 WerFault.exe
Token: SeBackupPrivilege 800 WerFault.exe
Token: SeDebugPrivilege 800 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	800	WerFault.exe
Token: SeBackupPrivilege	800	WerFault.exe
Token: SeDebugPrivilege	800	WerFault.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 3672 wrote to memory of 3652	3672	rundll32.exe	rundll32.exe
PID 3672 wrote to memory of 3652	3672	rundll32.exe	rundll32.exe
PID 3672 wrote to memory of 3652	3672	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bfnigger.bin.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3672

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bfnigger.bin.dll,#1
2⤵
PID:3652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 632
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:800

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/3652-115-0x0000000000000000-mapping.dmp

Download
memory/3652-116-0x0000000073640000-0x00000000736CC000-memory.dmp

Filesize
560KB

Download
memory/3652-118-0x0000000000DF0000-0x0000000000DF6000-memory.dmp

Filesize
24KB

Download