dridex | b556487ae4d889236c1626083b0c9d45a29a5c3bc4e087bf2e3245b6a18ed2db

General

Target

Invoice_8384252.xlsm
Size

331KB
MD5

bde2b9dc7dab9e930be10b75dcd171ef
SHA1

8dfeed50d89f5a2264efb31e5f74816b49c148fb
SHA256

b556487ae4d889236c1626083b0c9d45a29a5c3bc4e087bf2e3245b6a18ed2db
SHA512

123521549ec9d98f62929ed40357be1c341bc799e79bc322a4bda0e524b297161021fec6bb16b60043d5f2cf575d9e7abdae5e45ba9db4f058009702963beac8

Score

10^/10

dridex 22201 botnet evasion loader trojan

Malware Config

Extracted

Family

dridex

Botnet

22201

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\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3144	3920	mshta.exe	EXCEL.EXE

Dridex Loader 1 IoCs

Detects Dridex both x86 and x64 loader in memory.

botnet loader

Processes:

resource	yara_rule
behavioral2/memory/2504-276-0x0000000073560000-0x0000000073590000-memory.dmp	dridex_ldr

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

25 3144 mshta.exe
Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

2504 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

flow	pid	process
25	3144	mshta.exe

pid	process
2504	rundll32.exe

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

3920 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3920	EXCEL.EXE
3920	EXCEL.EXE
3920	EXCEL.EXE
3920	EXCEL.EXE
3920	EXCEL.EXE
3920	EXCEL.EXE
3920	EXCEL.EXE
3920	EXCEL.EXE
3920	EXCEL.EXE
3920	EXCEL.EXE
3920	EXCEL.EXE
3920	EXCEL.EXE
3920	EXCEL.EXE
3920	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXEmshta.exerundll32.exe

description	pid	process	target process
PID 3920 wrote to memory of 3144	3920	EXCEL.EXE	mshta.exe
PID 3920 wrote to memory of 3144	3920	EXCEL.EXE	mshta.exe
PID 3144 wrote to memory of 1980	3144	mshta.exe	rundll32.exe
PID 3144 wrote to memory of 1980	3144	mshta.exe	rundll32.exe
PID 1980 wrote to memory of 2504	1980	rundll32.exe	rundll32.exe
PID 1980 wrote to memory of 2504	1980	rundll32.exe	rundll32.exe
PID 1980 wrote to memory of 2504	1980	rundll32.exe	rundll32.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_8384252.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3920

C:\Windows\SYSTEM32\mshta.exe
mshta C:\ProgramData//theDialogGallery3dLine.sct
2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:3144

C:\Windows\SYSTEM32\rundll32.exe
rundll32.exe C:\ProgramData\qSurfaceWireframe.dll,AddLookaside
3⤵
- Suspicious use of WriteProcessMemory
PID:1980

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\ProgramData\qSurfaceWireframe.dll,AddLookaside
4⤵
- Loads dropped DLL
- Checks whether UAC is enabled
PID:2504

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

2

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\qSurfaceWireframe.dll
MD5
8d89ae4e36ad7940b6bf97f6a3c3e1af

SHA1
22537d62227cae0e27bbadced7ebc470b3251993

SHA256
35505b13036a28b838b5b6a4c186fc98bf46dcd57eda5e2f58c049c5777df968

SHA512
b5a634e0dc5e79bddf326f674f81ff4d9af6747956545420d50cbd1e2993193da6aa59691ab5e08bc9488be6927ee7c5916e04aa443a491c1e08f59d48ef5bce

Download Submit
C:\ProgramData\theDialogGallery3dLine.sct
MD5
40433e06540fb84187f0e23b215c5ff2

SHA1
deb1d9969466de01a012525d3ba23408fa591094

SHA256
c22cdd06bbeed13a7e15f7ea846c056680cb8e4618f955cb37616abfa908901c

SHA512
19a5de0f5f4f8148d67665182d76ab023fbe994b40e524c6b6daef6933555f10a192ee849b7c007a657eb1cc1ff1f5957f76b447e0c3b5f7a9a34a142742316b

Download Submit
\ProgramData\qSurfaceWireframe.dll
MD5
8d89ae4e36ad7940b6bf97f6a3c3e1af

SHA1
22537d62227cae0e27bbadced7ebc470b3251993

SHA256
35505b13036a28b838b5b6a4c186fc98bf46dcd57eda5e2f58c049c5777df968

SHA512
b5a634e0dc5e79bddf326f674f81ff4d9af6747956545420d50cbd1e2993193da6aa59691ab5e08bc9488be6927ee7c5916e04aa443a491c1e08f59d48ef5bce

Download Submit
memory/1980-272-0x0000000000000000-mapping.dmp

Download
memory/2504-278-0x0000000002F90000-0x0000000002F96000-memory.dmp

Filesize
24KB

Download
memory/2504-274-0x0000000000000000-mapping.dmp

Download
memory/2504-276-0x0000000073560000-0x0000000073590000-memory.dmp

Filesize
192KB

Download
memory/3144-264-0x0000000000000000-mapping.dmp

Download
memory/3920-119-0x00007FF9CF580000-0x00007FF9CF590000-memory.dmp

Filesize
64KB

Download
memory/3920-118-0x00007FF9CF580000-0x00007FF9CF590000-memory.dmp

Filesize
64KB

Download
memory/3920-117-0x00007FF9CF580000-0x00007FF9CF590000-memory.dmp

Filesize
64KB

Download
memory/3920-116-0x00007FF9CF580000-0x00007FF9CF590000-memory.dmp

Filesize
64KB

Download
memory/3920-123-0x000001B55E460000-0x000001B560355000-memory.dmp

Filesize
31.0MB

Download
memory/3920-115-0x00007FF9CF580000-0x00007FF9CF590000-memory.dmp

Filesize
64KB

Download
memory/3920-122-0x00007FF9EFDA0000-0x00007FF9F0E8E000-memory.dmp

Filesize
16.9MB

Download
memory/3920-114-0x00007FF614540000-0x00007FF617AF6000-memory.dmp

Filesize
53.7MB

Download
memory/3920-76020-0x00007FF9CF580000-0x00007FF9CF590000-memory.dmp

Filesize
64KB

Download
memory/3920-76022-0x00007FF9CF580000-0x00007FF9CF590000-memory.dmp

Filesize
64KB

Download
memory/3920-76024-0x00007FF9CF580000-0x00007FF9CF590000-memory.dmp

Filesize
64KB

Download
memory/3920-76025-0x00007FF9CF580000-0x00007FF9CF590000-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