dridex | 15e08697b366cab5dbfffde7116ac38f6771d6c7f7eb430df9bf621694817e38

Analysis

max time kernel
65s
max time network
125s
platform
windows10_x64
resource
win10-en-20211014
submitted
20-10-2021 21:40

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General

Target

8_clr.dll
Size

180KB
MD5

f66cbe92d85e332d274af0219340e137
SHA1

f9a8197d2df29347c011bbe425e059bd2aa398e5
SHA256

15e08697b366cab5dbfffde7116ac38f6771d6c7f7eb430df9bf621694817e38
SHA512

996075b69f27045f610f08c7da2e1a0a3cd875bf09a4ed31dd5143a0d4544f6de99e1dc74da6192517c91cd9a01f2272ead60c5eb2c2dea76e443f62a8eed8f4

Score

10^/10

dridex 22201 botnet loader

Malware Config

Extracted

Family

dridex

Botnet

22201

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
behavioral2/memory/3208-116-0x0000000073950000-0x000000007397F000-memory.dmp	dridex_ldr

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2400 3208 WerFault.exe rundll32.exe

pid	pid_target	process	target process
2400	3208	WerFault.exe	rundll32.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

WerFault.exe

pid	process
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe
2400	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 2400 WerFault.exe
Token: SeBackupPrivilege 2400 WerFault.exe
Token: SeDebugPrivilege 2400 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	2400	WerFault.exe
Token: SeBackupPrivilege	2400	WerFault.exe
Token: SeDebugPrivilege	2400	WerFault.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 4144 wrote to memory of 3208	4144	rundll32.exe	rundll32.exe
PID 4144 wrote to memory of 3208	4144	rundll32.exe	rundll32.exe
PID 4144 wrote to memory of 3208	4144	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8_clr.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4144

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8_clr.dll,#1
2⤵
PID:3208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3208 -s 616
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2400

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/3208-115-0x0000000000000000-mapping.dmp

Download
memory/3208-116-0x0000000073950000-0x000000007397F000-memory.dmp

Filesize
188KB

Download
memory/3208-118-0x0000000004650000-0x0000000004656000-memory.dmp

Filesize
24KB

Download