dridex | c7e6848fd63681514d6dad3032e358a257dde3aa1cd3b349306283356bca2608

General

Target

1_Total New Invoices-Thursday January 21_2021.xlsm
Size

33KB
MD5

a52a88ae97dd408d38d98c9aa7f81142
SHA1

234b65bc42a077c98c61a8eb4870d41e0039013e
SHA256

c7e6848fd63681514d6dad3032e358a257dde3aa1cd3b349306283356bca2608
SHA512

5e613f1db0e10dbdb14bc3b0f8ef7816f27a5de9f8fbb63c698e18695d0f6c7872c1e958aa122342b0cdd8d0dea70f1b23dae85ef9ae6ef893b69d30d903feab

Score

10^/10

dridex 10444 botnet loader

Malware Config

Extracted

Family

dridex

Botnet

10444

C2

194.225.58.214:443

211.110.44.63:5353

69.164.207.140:3388

198.57.200.100:3786

rc4.plain

Signatures

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

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

regsvr32.exeregsvr32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2316	636	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3708	636	regsvr32.exe	EXCEL.EXE

Dridex Loader 3 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/3172-13-0x0000000074130000-0x000000007416D000-memory.dmp	dridex_ldr
behavioral2/memory/3172-14-0x0000000074130000-0x000000007416D000-memory.dmp	dridex_ldr
behavioral2/memory/3172-16-0x0000000074130000-0x000000007416D000-memory.dmp	dridex_ldr

Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid process

3172 regsvr32.exe

pid	process
3172	regsvr32.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

636 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
636	EXCEL.EXE
636	EXCEL.EXE
636	EXCEL.EXE
636	EXCEL.EXE
636	EXCEL.EXE
636	EXCEL.EXE
636	EXCEL.EXE
636	EXCEL.EXE
636	EXCEL.EXE
636	EXCEL.EXE
636	EXCEL.EXE
636	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXEregsvr32.exe

description	pid	process	target process
PID 636 wrote to memory of 2316	636	EXCEL.EXE	regsvr32.exe
PID 636 wrote to memory of 2316	636	EXCEL.EXE	regsvr32.exe
PID 636 wrote to memory of 3708	636	EXCEL.EXE	regsvr32.exe
PID 636 wrote to memory of 3708	636	EXCEL.EXE	regsvr32.exe
PID 3708 wrote to memory of 3172	3708	regsvr32.exe	regsvr32.exe
PID 3708 wrote to memory of 3172	3708	regsvr32.exe	regsvr32.exe
PID 3708 wrote to memory of 3172	3708	regsvr32.exe	regsvr32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\1_Total New Invoices-Thursday January 21_2021.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:636

C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" -s C:\Users\Admin\AppData\Local\Temp\iijrlw.dll
2⤵
- Process spawned unexpected child process
PID:2316

C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" -s C:\Users\Admin\AppData\Local\Temp\iijrlw.dll
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3708

C:\Windows\SysWOW64\regsvr32.exe
-s C:\Users\Admin\AppData\Local\Temp\iijrlw.dll
3⤵
- Loads dropped DLL
PID:3172

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\iijrlw.dll
MD5
4746fbed409f87ec6ddb6653cb4e201c

SHA1
b8ee3f60f74553e44d42b0f47a0a4a55ed644c97

SHA256
864e95d36584e9db7bcd7552272e446a4c7cbc6601dcd4f4a2687d96374b439b

SHA512
e6def1b637b3aea0d0f4ed27add38e9330e15cda1a38a1dd228799296497ddd0bf13f89022f0491fa98e735b5ccff0f621429a7606d6c3ecb0f57372157b405c

Download Submit
\Users\Admin\AppData\Local\Temp\iijrlw.dll
MD5
4746fbed409f87ec6ddb6653cb4e201c

SHA1
b8ee3f60f74553e44d42b0f47a0a4a55ed644c97

SHA256
864e95d36584e9db7bcd7552272e446a4c7cbc6601dcd4f4a2687d96374b439b

SHA512
e6def1b637b3aea0d0f4ed27add38e9330e15cda1a38a1dd228799296497ddd0bf13f89022f0491fa98e735b5ccff0f621429a7606d6c3ecb0f57372157b405c

Download Submit
memory/636-3-0x00007FF9C3DC0000-0x00007FF9C3DD0000-memory.dmp

Filesize
64KB

Download
memory/636-4-0x00007FF9C3DC0000-0x00007FF9C3DD0000-memory.dmp

Filesize
64KB

Download
memory/636-5-0x00007FF9C3DC0000-0x00007FF9C3DD0000-memory.dmp

Filesize
64KB

Download
memory/636-6-0x00007FF9E73C0000-0x00007FF9E79F7000-memory.dmp

Filesize
6.2MB

Download
memory/636-7-0x000001F986CB0000-0x000001F986CB4000-memory.dmp

Filesize
16KB

Download
memory/636-2-0x00007FF9C3DC0000-0x00007FF9C3DD0000-memory.dmp

Filesize
64KB

Download
memory/2316-8-0x0000000000000000-mapping.dmp

Download
memory/3172-11-0x0000000000000000-mapping.dmp

Download
memory/3172-13-0x0000000074130000-0x000000007416D000-memory.dmp

Filesize
244KB

Download
memory/3172-14-0x0000000074130000-0x000000007416D000-memory.dmp

Filesize
244KB

Download
memory/3172-15-0x0000000000FC0000-0x0000000000FC1000-memory.dmp

Filesize
4KB

Download
memory/3172-16-0x0000000074130000-0x000000007416D000-memory.dmp

Filesize
244KB

Download
memory/3708-9-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads