dridex | 3a08a954b5420702dc1f57733dc238f9977c4dd2041749043ae3e48b36b638c6

General

Target

295323_BOL.xlsm
Size

35KB
MD5

22c652771b8ce73627adc88d637929cf
SHA1

014cc86b4b1421daa675c34183b7aab2c8fb231b
SHA256

3a08a954b5420702dc1f57733dc238f9977c4dd2041749043ae3e48b36b638c6
SHA512

4d46118b15ec9f052aa091d3f1f33dcff01d95531b2fa69d7fdd4301ae080979d6bec3bfccdd5071570c4c1796e96684012e39912af08fcee443458e6667b778

Score

10^/10

dridex 10444 botnet loader

Malware Config

Extracted

Family

dridex

Botnet

10444

C2

210.65.244.184:443

147.78.186.4:10051

62.75.168.152:6601

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 1 IoCs

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

Processes:

regsvr32.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	3772	1144	regsvr32.exe	EXCEL.EXE

Dridex Loader 2 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/912-11-0x0000000073D70000-0x0000000073DAD000-memory.dmp	dridex_ldr
behavioral2/memory/912-12-0x0000000073D70000-0x0000000073DAD000-memory.dmp	dridex_ldr

Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid process

912 regsvr32.exe

pid	process
912	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

1144 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

1144 EXCEL.EXE
1144 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

EXCEL.EXEregsvr32.exe

description	pid	process	target process
PID 1144 wrote to memory of 3772	1144	EXCEL.EXE	regsvr32.exe
PID 1144 wrote to memory of 3772	1144	EXCEL.EXE	regsvr32.exe
PID 3772 wrote to memory of 912	3772	regsvr32.exe	regsvr32.exe
PID 3772 wrote to memory of 912	3772	regsvr32.exe	regsvr32.exe
PID 3772 wrote to memory of 912	3772	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\295323_BOL.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1144

C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" -s C:\Users\Admin\AppData\Local\Temp\ocufcool.dll
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3772

C:\Windows\SysWOW64\regsvr32.exe
-s C:\Users\Admin\AppData\Local\Temp\ocufcool.dll
3⤵
- Loads dropped DLL
PID:912

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\ocufcool.dll
MD5
39b34c28ed8dbbc6ad137537d53a7ace

SHA1
9996f0c3bf03269a9ae5b38f975a4466b3da89e8

SHA256
10270594d0719028a337eacdecc282885990ead35dff29781b25a86200d36f95

SHA512
7e74eeb901e6809a87b3aa40d54dc930f9f42f18722522e7cf8be5fac62cdd417b9265d2d898129c23822379b99607c1de153353559947ed19f859215f1c6429

Download Submit
\Users\Admin\AppData\Local\Temp\ocufcool.dll
MD5
39b34c28ed8dbbc6ad137537d53a7ace

SHA1
9996f0c3bf03269a9ae5b38f975a4466b3da89e8

SHA256
10270594d0719028a337eacdecc282885990ead35dff29781b25a86200d36f95

SHA512
7e74eeb901e6809a87b3aa40d54dc930f9f42f18722522e7cf8be5fac62cdd417b9265d2d898129c23822379b99607c1de153353559947ed19f859215f1c6429

Download Submit
memory/912-9-0x0000000000000000-mapping.dmp

Download
memory/912-11-0x0000000073D70000-0x0000000073DAD000-memory.dmp

Filesize
244KB

Download
memory/912-12-0x0000000073D70000-0x0000000073DAD000-memory.dmp

Filesize
244KB

Download
memory/912-13-0x00000000026D0000-0x00000000026D1000-memory.dmp

Filesize
4KB

Download
memory/1144-2-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmp

Filesize
64KB

Download
memory/1144-3-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmp

Filesize
64KB

Download
memory/1144-4-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmp

Filesize
64KB

Download
memory/1144-5-0x00007FFE21590000-0x00007FFE21BC7000-memory.dmp

Filesize
6.2MB

Download
memory/1144-6-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmp

Filesize
64KB

Download
memory/3772-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads