ta505 | b49a9a0267c16f727751d36b6ce7444550a101683a872195812348757fed7d8c

Analysis

max time kernel
163s
max time network
188s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
31-07-2022 04:42

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General

Target

b49a9a0267c16f727751d36b6ce7444550a101683a872195812348757fed7d8c.xls
Size

681KB
MD5

97538afcdbded79ba720361d76574cec
SHA1

18602da6c649eac84c93706422c0919b8d035820
SHA256

b49a9a0267c16f727751d36b6ce7444550a101683a872195812348757fed7d8c
SHA512

a3634a471078b92eb55564717c7846f8e6d51a4e968865717a785385bfe8513a8fc9cecc517df4b52cc4a6d1d04f2f5972d98c5e86a41a4aba738ecef0104d3d

Score

10^/10

ta505

Malware Config

Extracted

Language

xlm4.0

Source

Signatures

TA505
Cybercrime group active since 2015, responsible for families like Dridex and Locky.
ta505

Loads dropped DLL 1 IoCs

pid	Process
3924	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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{DFD9454A-BC6B-468D-92FC-3C6DA08FAEDC}\4DCB66F5.tmp:Zone.Identifier	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3924	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3924	EXCEL.EXE
3924	EXCEL.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3924	EXCEL.EXE

Suspicious use of SetWindowsHookEx 27 IoCs

pid	Process
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3924 wrote to memory of 5112	3924	EXCEL.EXE	92
PID 3924 wrote to memory of 5112	3924	EXCEL.EXE	92

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\b49a9a0267c16f727751d36b6ce7444550a101683a872195812348757fed7d8c.xls"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3924
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:5112

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\outgoing.dll

Filesize
229KB

MD5
22228b7db5b4ef6b31f68ae139f7f3ae

SHA1
21d2f871fd396aa0ed6f8e947139a3cb0787dc1b

SHA256
1746e560497a8adbd729ca4139082d78e0fc78020e10d1699ca63726ae2ebc22

SHA512
f32f061b1cda1646860c0fa22c0a8a1b0ae839dc4971b449afb910ecf08e709ba5f1ee6cb3716d6842f56e8956f845203d74c3618a7c7cd13c2ab7e84efa5d65

Download Submit
memory/3924-138-0x000001B611A20000-0x000001B611A22000-memory.dmp

Filesize
8KB

Download
memory/3924-135-0x00007FFA31520000-0x00007FFA31530000-memory.dmp

Filesize
64KB

Download
memory/3924-139-0x000001B611A20000-0x000001B611A22000-memory.dmp

Filesize
8KB

Download
memory/3924-133-0x00007FFA336B0000-0x00007FFA336C0000-memory.dmp

Filesize
64KB

Download
memory/3924-148-0x00007FFA336B0000-0x00007FFA336C0000-memory.dmp

Filesize
64KB

Download
memory/3924-136-0x00007FFA31520000-0x00007FFA31530000-memory.dmp

Filesize
64KB

Download
memory/3924-137-0x000001B618D40000-0x000001B618D44000-memory.dmp

Filesize
16KB

Download
memory/3924-132-0x00007FFA336B0000-0x00007FFA336C0000-memory.dmp

Filesize
64KB

Download
memory/3924-134-0x00007FFA336B0000-0x00007FFA336C0000-memory.dmp

Filesize
64KB

Download
memory/3924-131-0x00007FFA336B0000-0x00007FFA336C0000-memory.dmp

Filesize
64KB

Download
memory/3924-130-0x00007FFA336B0000-0x00007FFA336C0000-memory.dmp

Filesize
64KB

Download
memory/3924-142-0x000001B6131D0000-0x000001B6131D3000-memory.dmp

Filesize
12KB

Download
memory/3924-143-0x0000000065250000-0x00000000652A4000-memory.dmp

Filesize
336KB

Download
memory/3924-145-0x00007FFA336B0000-0x00007FFA336C0000-memory.dmp

Filesize
64KB

Download
memory/3924-146-0x00007FFA336B0000-0x00007FFA336C0000-memory.dmp

Filesize
64KB

Download
memory/3924-147-0x00007FFA336B0000-0x00007FFA336C0000-memory.dmp

Filesize
64KB

Download