dridex | 129254b6e88edb60155404db703d0897e2e3735d72108adf6fee16708812d5d9

General

Target

Invoice(s) for Order _071185/071185_BOL.xlsm
Size

40KB
MD5

1573b4ec83ac67af060289a37896b0c9
SHA1

b95d31d6b268f4382c438ba8cdb2d6fae9e23572
SHA256

fd2cc0c858b7b92b32d86f7bb8a48d56798667a2bc7e75fe44f074178ea3a0d6
SHA512

925e02a2f062cf4732335b28765779973d6db9d89c52016326aef577b0e76ee07bb8beb386545f9551aa2e4c811f6d432c9dda90cfedc6e0ed72f042808fd3b9

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	420	1108	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/1892-11-0x0000000073580000-0x00000000735BD000-memory.dmp	dridex_ldr
behavioral2/memory/1892-12-0x0000000073580000-0x00000000735BD000-memory.dmp	dridex_ldr

Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid process

1892 regsvr32.exe

pid	process
1892	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\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1108 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

1108 EXCEL.EXE
1108 EXCEL.EXE

Suspicious use of SetWindowsHookEx 17 IoCs

Processes:

EXCEL.EXE

pid	process
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

EXCEL.EXEregsvr32.exe

description	pid	process	target process
PID 1108 wrote to memory of 420	1108	EXCEL.EXE	regsvr32.exe
PID 1108 wrote to memory of 420	1108	EXCEL.EXE	regsvr32.exe
PID 420 wrote to memory of 1892	420	regsvr32.exe	regsvr32.exe
PID 420 wrote to memory of 1892	420	regsvr32.exe	regsvr32.exe
PID 420 wrote to memory of 1892	420	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\Invoice(s) for Order _071185\071185_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:1108

C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" -s C:\Users\Admin\AppData\Local\Temp\vrbhfroh.dll
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:420

C:\Windows\SysWOW64\regsvr32.exe
-s C:\Users\Admin\AppData\Local\Temp\vrbhfroh.dll
3⤵
- Loads dropped DLL
PID:1892

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\vrbhfroh.dll

MD5
9da3ac5eeb02e9e4afd27b1744af5c67

SHA1
37ab0fb581035cd53fca86855e3acbfe3eb15e9f

SHA256
5b965759f9af66ad12e3fcbf71481799926417240c8cfbd1445d4867238631b8

SHA512
7613692f5555f7b33834ad634cbf56c4e924325bf9077be10132fa3c2295741b3f92fad00d21f2fd1caa3ca0103c604cbee41fc66bd5feeb5e84112ddd7ce363

Download Submit
\Users\Admin\AppData\Local\Temp\vrbhfroh.dll

MD5
9da3ac5eeb02e9e4afd27b1744af5c67

SHA1
37ab0fb581035cd53fca86855e3acbfe3eb15e9f

SHA256
5b965759f9af66ad12e3fcbf71481799926417240c8cfbd1445d4867238631b8

SHA512
7613692f5555f7b33834ad634cbf56c4e924325bf9077be10132fa3c2295741b3f92fad00d21f2fd1caa3ca0103c604cbee41fc66bd5feeb5e84112ddd7ce363

Download Submit
memory/420-7-0x0000000000000000-mapping.dmp

Download
memory/1108-2-0x00007FFC22770000-0x00007FFC22780000-memory.dmp

Filesize
64KB

Download
memory/1108-3-0x00007FFC22770000-0x00007FFC22780000-memory.dmp

Filesize
64KB

Download
memory/1108-4-0x00007FFC22770000-0x00007FFC22780000-memory.dmp

Filesize
64KB

Download
memory/1108-5-0x00007FFC47C80000-0x00007FFC482B7000-memory.dmp

Filesize
6.2MB

Download
memory/1108-6-0x00007FFC22770000-0x00007FFC22780000-memory.dmp

Filesize
64KB

Download
memory/1892-9-0x0000000000000000-mapping.dmp

Download
memory/1892-11-0x0000000073580000-0x00000000735BD000-memory.dmp

Filesize
244KB

Download
memory/1892-12-0x0000000073580000-0x00000000735BD000-memory.dmp

Filesize
244KB

Download
memory/1892-13-0x0000000000D50000-0x0000000000D51000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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