dridex | 09cceb619174c99d026734f860f26cda0107af31b9153a9f7d6613c86fd57772

General

Target

Statement of Account as of 01_20_2021.xlsm
Size

37KB
MD5

28e9c78dcffb4a80c7bcfcd818791940
SHA1

0f239865c9e2bdd64d2017c7d26cac19dc7d3cde
SHA256

09cceb619174c99d026734f860f26cda0107af31b9153a9f7d6613c86fd57772
SHA512

082d84c5d6b4442f0c6d10231c0368e74906a62348aaf7bb070a602695f9420abc3aa2cce28dfeaaaae784ba7e96a8008ab9e9d5bd6f2a5dfb591e8c8f5729fc

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	592	4808	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1184	4808	regsvr32.exe	EXCEL.EXE

Dridex Loader 3 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral1/memory/1344-13-0x0000000073D20000-0x0000000073D5D000-memory.dmp	dridex_ldr
behavioral1/memory/1344-14-0x0000000073D20000-0x0000000073D5D000-memory.dmp	dridex_ldr
behavioral1/memory/1344-16-0x0000000073D20000-0x0000000073D5D000-memory.dmp	dridex_ldr

Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid process

1344 regsvr32.exe

pid	process
1344	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4808 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXEregsvr32.exe

description	pid	process	target process
PID 4808 wrote to memory of 592	4808	EXCEL.EXE	regsvr32.exe
PID 4808 wrote to memory of 592	4808	EXCEL.EXE	regsvr32.exe
PID 4808 wrote to memory of 1184	4808	EXCEL.EXE	regsvr32.exe
PID 4808 wrote to memory of 1184	4808	EXCEL.EXE	regsvr32.exe
PID 1184 wrote to memory of 1344	1184	regsvr32.exe	regsvr32.exe
PID 1184 wrote to memory of 1344	1184	regsvr32.exe	regsvr32.exe
PID 1184 wrote to memory of 1344	1184	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\Statement of Account as of 01_20_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:4808

C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" -s C:\Users\Admin\AppData\Local\Temp\jyuxguis.dll
2⤵
- Process spawned unexpected child process
PID:592

C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" -s C:\Users\Admin\AppData\Local\Temp\jyuxguis.dll
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:1184

C:\Windows\SysWOW64\regsvr32.exe
-s C:\Users\Admin\AppData\Local\Temp\jyuxguis.dll
3⤵
- Loads dropped DLL
PID:1344

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\jyuxguis.dll
MD5
4b0e1750691b96e97f20da52f7d7032c

SHA1
b8a4f7901bbf6f26f1f2e6886ebd85cf08fadd11

SHA256
3459d30b5d2e6c58ddb8dcd9f45f5141f8d15c55fff16f9cc76ec621e6d829fb

SHA512
b2eb64cb2b49fa53bb4020413f00793f2aa69235c458ef7a903d5a4a4711b9638c1dcb66cfaed145834fc9c1cb08c08eff84f670ef9f2a458b9dc45dde9c71ab

Download Submit
\Users\Admin\AppData\Local\Temp\jyuxguis.dll
MD5
4b0e1750691b96e97f20da52f7d7032c

SHA1
b8a4f7901bbf6f26f1f2e6886ebd85cf08fadd11

SHA256
3459d30b5d2e6c58ddb8dcd9f45f5141f8d15c55fff16f9cc76ec621e6d829fb

SHA512
b2eb64cb2b49fa53bb4020413f00793f2aa69235c458ef7a903d5a4a4711b9638c1dcb66cfaed145834fc9c1cb08c08eff84f670ef9f2a458b9dc45dde9c71ab

Download Submit
memory/592-7-0x0000000000000000-mapping.dmp

Download
memory/1184-9-0x0000000000000000-mapping.dmp

Download
memory/1344-11-0x0000000000000000-mapping.dmp

Download
memory/1344-16-0x0000000073D20000-0x0000000073D5D000-memory.dmp

Filesize
244KB

Download
memory/1344-15-0x0000000002910000-0x0000000002911000-memory.dmp

Filesize
4KB

Download
memory/1344-14-0x0000000073D20000-0x0000000073D5D000-memory.dmp

Filesize
244KB

Download
memory/1344-13-0x0000000073D20000-0x0000000073D5D000-memory.dmp

Filesize
244KB

Download
memory/4808-5-0x00007FFA613D0000-0x00007FFA61A07000-memory.dmp

Filesize
6.2MB

Download
memory/4808-8-0x000001BFF8C80000-0x000001BFF8C84000-memory.dmp

Filesize
16KB

Download
memory/4808-6-0x00007FFA3D590000-0x00007FFA3D5A0000-memory.dmp

Filesize
64KB

Download
memory/4808-2-0x00007FFA3D590000-0x00007FFA3D5A0000-memory.dmp

Filesize
64KB

Download
memory/4808-4-0x00007FFA3D590000-0x00007FFA3D5A0000-memory.dmp

Filesize
64KB

Download
memory/4808-3-0x00007FFA3D590000-0x00007FFA3D5A0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads