dridex | 1be3b8b888ba3b946304bd262319fa5fca0f8d41bde9850842e978a4fdcef808

General

Target

fd2cc0c858b7b92b32d86f7bb8a48d56798667a2bc7e75fe44f074178ea3a0d6.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 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	4504	4680	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4572	4680	regsvr32.exe	EXCEL.EXE

Dridex Loader 4 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/4476-31-0x0000000073C30000-0x0000000073C6D000-memory.dmp	dridex_ldr
behavioral2/memory/4476-32-0x0000000073C30000-0x0000000073C6D000-memory.dmp	dridex_ldr
behavioral2/memory/584-34-0x00000000735B0000-0x00000000735ED000-memory.dmp	dridex_ldr
behavioral2/memory/584-35-0x00000000735B0000-0x00000000735ED000-memory.dmp	dridex_ldr

Loads dropped DLL 2 IoCs

Processes:

regsvr32.exeregsvr32.exe

pid process

4476 regsvr32.exe
584 regsvr32.exe

pid	process
4476	regsvr32.exe
584	regsvr32.exe

Process spawned suspicious child process 1 IoCs

This child process is typically not spawned unless (for example) the parent process crashes. This typically indicates the parent process was unsuccessfully compromised.

Processes:

DW20.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	660	4680	DW20.EXE	EXCEL.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

4680 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

EXCEL.EXEdwwin.exe

pid process

4680 EXCEL.EXE
4680 EXCEL.EXE
1004 dwwin.exe
1004 dwwin.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4680 EXCEL.EXE
4680 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4680	EXCEL.EXE
4680	EXCEL.EXE
4680	EXCEL.EXE
4680	EXCEL.EXE
4680	EXCEL.EXE
4680	EXCEL.EXE
4680	EXCEL.EXE
4680	EXCEL.EXE
4680	EXCEL.EXE
4680	EXCEL.EXE
4680	EXCEL.EXE
4680	EXCEL.EXE
4680	EXCEL.EXE
4680	EXCEL.EXE

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

EXCEL.EXEregsvr32.exeregsvr32.exeDW20.EXE

description	pid	process	target process
PID 4680 wrote to memory of 4504	4680	EXCEL.EXE	regsvr32.exe
PID 4680 wrote to memory of 4504	4680	EXCEL.EXE	regsvr32.exe
PID 4504 wrote to memory of 4476	4504	regsvr32.exe	regsvr32.exe
PID 4504 wrote to memory of 4476	4504	regsvr32.exe	regsvr32.exe
PID 4504 wrote to memory of 4476	4504	regsvr32.exe	regsvr32.exe
PID 4680 wrote to memory of 4572	4680	EXCEL.EXE	regsvr32.exe
PID 4680 wrote to memory of 4572	4680	EXCEL.EXE	regsvr32.exe
PID 4572 wrote to memory of 584	4572	regsvr32.exe	regsvr32.exe
PID 4572 wrote to memory of 584	4572	regsvr32.exe	regsvr32.exe
PID 4572 wrote to memory of 584	4572	regsvr32.exe	regsvr32.exe
PID 4680 wrote to memory of 660	4680	EXCEL.EXE	DW20.EXE
PID 4680 wrote to memory of 660	4680	EXCEL.EXE	DW20.EXE
PID 660 wrote to memory of 1004	660	DW20.EXE	dwwin.exe
PID 660 wrote to memory of 1004	660	DW20.EXE	dwwin.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\fd2cc0c858b7b92b32d86f7bb8a48d56798667a2bc7e75fe44f074178ea3a0d6.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4680

C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" -s C:\Users\Admin\AppData\Local\Temp\zmitnss.dll
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:4504

C:\Windows\SysWOW64\regsvr32.exe
-s C:\Users\Admin\AppData\Local\Temp\zmitnss.dll
3⤵
- Loads dropped DLL
PID:4476

C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" -s C:\Users\Admin\AppData\Local\Temp\fucakzbw.dll
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:4572

C:\Windows\SysWOW64\regsvr32.exe
-s C:\Users\Admin\AppData\Local\Temp\fucakzbw.dll
3⤵
- Loads dropped DLL
PID:584

C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE
"C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE" -x -s 4328
2⤵
- Process spawned suspicious child process
- Suspicious use of WriteProcessMemory
PID:660

C:\Windows\system32\dwwin.exe
C:\Windows\system32\dwwin.exe -x -s 4328
3⤵
- Suspicious behavior: EnumeratesProcesses
PID:1004

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\fucakzbw.dll
MD5
605ed4c03630d8099709fe3218d2bf47

SHA1
c6f7fe3ee95d11327ebf4c091c7a07b60ba73aae

SHA256
7f26e224039333b19dd1863bf1a77f79154e677b8c725e56beb9d93d3d43874b

SHA512
d634f48feda791ffc733e996aeec264861c3b2b43e2b16d9d786f746741026616fb2e4cb45a562aa11f539813472f8b3302805429c23343aad7cb86f4beacf54

Download Submit
C:\Users\Admin\AppData\Local\Temp\zmitnss.dll
MD5
605ed4c03630d8099709fe3218d2bf47

SHA1
c6f7fe3ee95d11327ebf4c091c7a07b60ba73aae

SHA256
7f26e224039333b19dd1863bf1a77f79154e677b8c725e56beb9d93d3d43874b

SHA512
d634f48feda791ffc733e996aeec264861c3b2b43e2b16d9d786f746741026616fb2e4cb45a562aa11f539813472f8b3302805429c23343aad7cb86f4beacf54

Download Submit
\Users\Admin\AppData\Local\Temp\fucakzbw.dll
MD5
605ed4c03630d8099709fe3218d2bf47

SHA1
c6f7fe3ee95d11327ebf4c091c7a07b60ba73aae

SHA256
7f26e224039333b19dd1863bf1a77f79154e677b8c725e56beb9d93d3d43874b

SHA512
d634f48feda791ffc733e996aeec264861c3b2b43e2b16d9d786f746741026616fb2e4cb45a562aa11f539813472f8b3302805429c23343aad7cb86f4beacf54

Download Submit
\Users\Admin\AppData\Local\Temp\zmitnss.dll
MD5
605ed4c03630d8099709fe3218d2bf47

SHA1
c6f7fe3ee95d11327ebf4c091c7a07b60ba73aae

SHA256
7f26e224039333b19dd1863bf1a77f79154e677b8c725e56beb9d93d3d43874b

SHA512
d634f48feda791ffc733e996aeec264861c3b2b43e2b16d9d786f746741026616fb2e4cb45a562aa11f539813472f8b3302805429c23343aad7cb86f4beacf54

Download Submit
memory/584-36-0x0000000000A30000-0x0000000000A31000-memory.dmp

Filesize
4KB

Download
memory/584-35-0x00000000735B0000-0x00000000735ED000-memory.dmp

Filesize
244KB

Download
memory/584-34-0x00000000735B0000-0x00000000735ED000-memory.dmp

Filesize
244KB

Download
memory/584-13-0x0000000000000000-mapping.dmp

Download
memory/660-14-0x0000000000000000-mapping.dmp

Download
memory/1004-21-0x000002825C940000-0x000002825C941000-memory.dmp

Filesize
4KB

Download
memory/1004-29-0x000002825D3C0000-0x000002825D3C1000-memory.dmp

Filesize
4KB

Download
memory/1004-28-0x000002825D3C0000-0x000002825D3C1000-memory.dmp

Filesize
4KB

Download
memory/1004-27-0x000002825D3C0000-0x000002825D3C1000-memory.dmp

Filesize
4KB

Download
memory/1004-23-0x000002825D130000-0x000002825D131000-memory.dmp

Filesize
4KB

Download
memory/1004-19-0x0000000000000000-mapping.dmp

Download
memory/1004-20-0x000002825C940000-0x000002825C941000-memory.dmp

Filesize
4KB

Download
memory/4476-31-0x0000000073C30000-0x0000000073C6D000-memory.dmp

Filesize
244KB

Download
memory/4476-9-0x0000000000000000-mapping.dmp

Download
memory/4476-32-0x0000000073C30000-0x0000000073C6D000-memory.dmp

Filesize
244KB

Download
memory/4476-33-0x00000000005D0000-0x00000000005D1000-memory.dmp

Filesize
4KB

Download
memory/4504-7-0x0000000000000000-mapping.dmp

Download
memory/4572-11-0x0000000000000000-mapping.dmp

Download
memory/4680-6-0x00007FFEC57A0000-0x00007FFEC57B0000-memory.dmp

Filesize
64KB

Download
memory/4680-2-0x00007FFEC57A0000-0x00007FFEC57B0000-memory.dmp

Filesize
64KB

Download
memory/4680-5-0x00007FFEEB2F0000-0x00007FFEEB927000-memory.dmp

Filesize
6.2MB

Download
memory/4680-4-0x00007FFEC57A0000-0x00007FFEC57B0000-memory.dmp

Filesize
64KB

Download
memory/4680-3-0x00007FFEC57A0000-0x00007FFEC57B0000-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