dridex | 297fa628e174f62edfc8ecf1e4ec79d8f177fe89308a0c04a0b55693af0a776f

General

Target

Invoice_3326809.xlsm
Size

332KB
MD5

86c63e5a375f54c79cfa007828400a5d
SHA1

858168c7285d60d905470d70c32962a1367ea947
SHA256

297fa628e174f62edfc8ecf1e4ec79d8f177fe89308a0c04a0b55693af0a776f
SHA512

39c357bef2f317080dc115803d211a1d8294360a7002e38a8e7d7a5cd86d2b3c0d6faaa9535e2c5787dfc00b7e450ee03e3b3f259e0dd95e196a850a16d45f79

Score

10^/10

dridex 22202 botnet evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

22202

C2

45.79.33.48:443

139.162.202.74:5007

68.183.216.174:7443

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:

mshta.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1336	332	mshta.exe	EXCEL.EXE

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral1/memory/1696-72-0x000000006A820000-0x000000006A850000-memory.dmp	dridex_ldr

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

4 1336 mshta.exe
Downloads MZ/PE file
Loads dropped DLL 4 IoCs

Processes:

rundll32.exe

pid process

1696 rundll32.exe
1696 rundll32.exe
1696 rundll32.exe
1696 rundll32.exe
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

rundll32.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe
Office loads VBA resources, possible macro or embedded object present
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE

flow	pid	process
4	1336	mshta.exe

pid	process
1696	rundll32.exe
1696	rundll32.exe
1696	rundll32.exe
1696	rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Modifies Internet Explorer settings 1 TTPs 10 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXEmshta.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

332 EXCEL.EXE
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

332 EXCEL.EXE
332 EXCEL.EXE
332 EXCEL.EXE
332 EXCEL.EXE
332 EXCEL.EXE

pid	process
332	EXCEL.EXE

pid	process
332	EXCEL.EXE
332	EXCEL.EXE
332	EXCEL.EXE
332	EXCEL.EXE
332	EXCEL.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

EXCEL.EXEmshta.exe

description	pid	process	target process
PID 332 wrote to memory of 1336	332	EXCEL.EXE	mshta.exe
PID 332 wrote to memory of 1336	332	EXCEL.EXE	mshta.exe
PID 332 wrote to memory of 1336	332	EXCEL.EXE	mshta.exe
PID 332 wrote to memory of 1336	332	EXCEL.EXE	mshta.exe
PID 1336 wrote to memory of 1696	1336	mshta.exe	rundll32.exe
PID 1336 wrote to memory of 1696	1336	mshta.exe	rundll32.exe
PID 1336 wrote to memory of 1696	1336	mshta.exe	rundll32.exe
PID 1336 wrote to memory of 1696	1336	mshta.exe	rundll32.exe
PID 1336 wrote to memory of 1696	1336	mshta.exe	rundll32.exe
PID 1336 wrote to memory of 1696	1336	mshta.exe	rundll32.exe
PID 1336 wrote to memory of 1696	1336	mshta.exe	rundll32.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\Invoice_3326809.xlsm
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:332

C:\Windows\SysWOW64\mshta.exe
mshta C:\ProgramData//theParamTypeSmallInt.sct
2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1336

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\ProgramData\qPaperEnvelopePersonal.dll,AddLookaside
3⤵
- Loads dropped DLL
- Checks whether UAC is enabled
PID:1696

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\qPaperEnvelopePersonal.dll
MD5
98cba5d4e3bc55750e6716b3d952e375

SHA1
2b8ae91d2d044eeae4456fb000cd92583abcdfe3

SHA256
00072be4185289677e5babb9fda5279b5c2886683ebd7ea22d36f4bc9683b3e5

SHA512
52a392878a8fd99ea1100f36c42c29886cd49a2c03c3aec862731f97517950010c0af44a04a304861c9402d3aa8405e6e04408d52e3ee42d311dbdd1960ff953

Download Submit
C:\ProgramData\theParamTypeSmallInt.sct
MD5
92a9626c7da7b2e83ffc085503d472dd

SHA1
9eb0f57b72a6ebb0be7d6c2008cda52e4dbd70fc

SHA256
04a3042944f0aeab3f11c71769513509a2c697bdb0a19b8d0cd42a9f77d5b987

SHA512
89a9f0485f348f991bc63559ae34d3cc739f6e60639c162415b59b48aef24815f86628a60415bf81c9d58e4064ebae7102181e2de69c06022766127c6cdec6a8

Download Submit
\ProgramData\qPaperEnvelopePersonal.dll
MD5
98cba5d4e3bc55750e6716b3d952e375

SHA1
2b8ae91d2d044eeae4456fb000cd92583abcdfe3

SHA256
00072be4185289677e5babb9fda5279b5c2886683ebd7ea22d36f4bc9683b3e5

SHA512
52a392878a8fd99ea1100f36c42c29886cd49a2c03c3aec862731f97517950010c0af44a04a304861c9402d3aa8405e6e04408d52e3ee42d311dbdd1960ff953

Download Submit
\ProgramData\qPaperEnvelopePersonal.dll
MD5
98cba5d4e3bc55750e6716b3d952e375

SHA1
2b8ae91d2d044eeae4456fb000cd92583abcdfe3

SHA256
00072be4185289677e5babb9fda5279b5c2886683ebd7ea22d36f4bc9683b3e5

SHA512
52a392878a8fd99ea1100f36c42c29886cd49a2c03c3aec862731f97517950010c0af44a04a304861c9402d3aa8405e6e04408d52e3ee42d311dbdd1960ff953

Download Submit
\ProgramData\qPaperEnvelopePersonal.dll
MD5
98cba5d4e3bc55750e6716b3d952e375

SHA1
2b8ae91d2d044eeae4456fb000cd92583abcdfe3

SHA256
00072be4185289677e5babb9fda5279b5c2886683ebd7ea22d36f4bc9683b3e5

SHA512
52a392878a8fd99ea1100f36c42c29886cd49a2c03c3aec862731f97517950010c0af44a04a304861c9402d3aa8405e6e04408d52e3ee42d311dbdd1960ff953

Download Submit
\ProgramData\qPaperEnvelopePersonal.dll
MD5
98cba5d4e3bc55750e6716b3d952e375

SHA1
2b8ae91d2d044eeae4456fb000cd92583abcdfe3

SHA256
00072be4185289677e5babb9fda5279b5c2886683ebd7ea22d36f4bc9683b3e5

SHA512
52a392878a8fd99ea1100f36c42c29886cd49a2c03c3aec862731f97517950010c0af44a04a304861c9402d3aa8405e6e04408d52e3ee42d311dbdd1960ff953

Download Submit
memory/332-60-0x0000000071211000-0x0000000071213000-memory.dmp

Filesize
8KB

Download
memory/332-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/332-59-0x000000002F5A1000-0x000000002F5A4000-memory.dmp

Filesize
12KB

Download
memory/332-75-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1336-62-0x0000000000000000-mapping.dmp

Download
memory/1336-63-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

Filesize
8KB

Download
memory/1696-65-0x0000000000000000-mapping.dmp

Download
memory/1696-72-0x000000006A820000-0x000000006A850000-memory.dmp

Filesize
192KB

Download
memory/1696-74-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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