dridex | 71fb5ec5a1424b9965bf487a41e24e04e6cd20fb256b283b8262a6592aa90114

General

Target

Invoice_2457619.xlsm
Size

329KB
MD5

6cb632b4c2e9244c36ad740ef8cbfda5
SHA1

5c90034815dc6faf9d14da1536f05a8a9a1d0f73
SHA256

71fb5ec5a1424b9965bf487a41e24e04e6cd20fb256b283b8262a6592aa90114
SHA512

ec56dc8b6282de9ce3bf865263fbc74741ab98a70ac517f4d1637f025255c06247b11edd95edb9756032e93f7d0cdef93e639088cdd88732c3ccc060e85cc636

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\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1212	3212	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/4020-275-0x0000000074420000-0x0000000074450000-memory.dmp	dridex_ldr

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

19 1212 mshta.exe
Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

4020 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
19	1212	mshta.exe

pid	process
4020	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

3212 EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

EXCEL.EXE

pid	process
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE
3212	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXEmshta.exerundll32.exe

description	pid	process	target process
PID 3212 wrote to memory of 1212	3212	EXCEL.EXE	mshta.exe
PID 3212 wrote to memory of 1212	3212	EXCEL.EXE	mshta.exe
PID 1212 wrote to memory of 1936	1212	mshta.exe	rundll32.exe
PID 1212 wrote to memory of 1936	1212	mshta.exe	rundll32.exe
PID 1936 wrote to memory of 4020	1936	rundll32.exe	rundll32.exe
PID 1936 wrote to memory of 4020	1936	rundll32.exe	rundll32.exe
PID 1936 wrote to memory of 4020	1936	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_2457619.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3212

C:\Windows\SYSTEM32\mshta.exe
mshta C:\ProgramData//theSmartTagControlLink.sct
2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:1212

C:\Windows\SYSTEM32\rundll32.exe
rundll32.exe C:\ProgramData\qDialogSummaryInfo.dll,AddLookaside
3⤵
- Suspicious use of WriteProcessMemory
PID:1936

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\ProgramData\qDialogSummaryInfo.dll,AddLookaside
4⤵
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4020

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\qDialogSummaryInfo.dll
MD5
d0a9777d063838dbf9d566a8ae327c4e

SHA1
6f92815c9209e5d1e1bc1100b5f6c59502ab32d8

SHA256
cbe76441844bd0b28afb2b183f52ef3bec4c2a4b26884219049ba2618a823989

SHA512
174082c78d9ea76724cee9736a07400e3cb24b1d4ba0d6f4e4e4ab2b89043633af5f67cb853edd6af33f894149c66787a4eecf69dfe35abea50c1b283fdceefb

Download Submit
C:\ProgramData\theSmartTagControlLink.sct
MD5
e44dbd3ba1cd50d95a143234af5426e8

SHA1
c4bc233d71ad3fc0a4fd86b31180df6e5f37aab5

SHA256
2d77a15c23fe7cb627e494f4aa841fb43a4921c690dcd9bd5484f0ea344c1ae2

SHA512
4c696d5b8469ba018c7663da584460cb2fabf6b7ca092ee3d78d27eae43999ca1a8bcf30a4701e285c610fffd43ea8efe29615fbd308f6e11550773927b2780a

Download Submit
\ProgramData\qDialogSummaryInfo.dll
MD5
d0a9777d063838dbf9d566a8ae327c4e

SHA1
6f92815c9209e5d1e1bc1100b5f6c59502ab32d8

SHA256
cbe76441844bd0b28afb2b183f52ef3bec4c2a4b26884219049ba2618a823989

SHA512
174082c78d9ea76724cee9736a07400e3cb24b1d4ba0d6f4e4e4ab2b89043633af5f67cb853edd6af33f894149c66787a4eecf69dfe35abea50c1b283fdceefb

Download Submit
memory/1212-260-0x0000000000000000-mapping.dmp

Download
memory/1936-271-0x0000000000000000-mapping.dmp

Download
memory/3212-121-0x00007FF858F10000-0x00007FF859FFE000-memory.dmp

Filesize
16.9MB

Download
memory/3212-105583-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/3212-123-0x0000016496AB0000-0x00000164989A5000-memory.dmp

Filesize
31.0MB

Download
memory/3212-114-0x00007FF668F00000-0x00007FF66C4B6000-memory.dmp

Filesize
53.7MB

Download
memory/3212-118-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/3212-117-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/3212-116-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/3212-122-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/3212-115-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/3212-105587-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/3212-105585-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/3212-105581-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/4020-273-0x0000000000000000-mapping.dmp

Download
memory/4020-277-0x0000000000710000-0x000000000085A000-memory.dmp

Filesize
1.3MB

Download
memory/4020-275-0x0000000074420000-0x0000000074450000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads