ta505 | 3a0f0986193d0dc5e03ca1229e2509287593c03247e32bb5424009bc35e80738

Resubmissions

08-10-2022 00:17

221008-alen5seafl 10

07-10-2022 06:08

221007-gv6mjsbhhn 10

Analysis

max time kernel
109s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
07-10-2022 06:08

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General

Target

PKSJ Malware/1/VirusShare_0fea640a7da27f365b3675f73626b9c9.xls
Size

937KB
MD5

0fea640a7da27f365b3675f73626b9c9
SHA1

fd4825f244e9c145486cb6930ad05695b9972668
SHA256

64af94592f6707505fa6f42b58776c3635706a414e6362a92f707df84627679c
SHA512

c9a10288762f3f5a3fdff17f8dd8560e7a884f1b83f405c2e85c6c86e42f69a30841c13aa0f2ecfc55aed42995d7aeb8fe40415e423ed0a306d2e7d00883dfbf
SSDEEP

24576:h3zS0aqbCrxgFhFSQVB5DjDLG6/8otVBTN9s:K9Fo5VLDLGwTBT

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

Processes:

EXCEL.EXE

pid process

5012 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 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

Processes:

EXCEL.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{C6AF1F01-FD5C-4DAB-ACBE-0325A0F68517}\318A50C9.tmp:Zone.Identifier	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

5012 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

EXCEL.EXE

pid process

5012 EXCEL.EXE
5012 EXCEL.EXE
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

EXCEL.EXE

pid process

5012 EXCEL.EXE

Suspicious use of SetWindowsHookEx 27 IoCs

Processes:

EXCEL.EXE

pid	process
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 5012 wrote to memory of 4072	5012	EXCEL.EXE	splwow64.exe
PID 5012 wrote to memory of 4072	5012	EXCEL.EXE	splwow64.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\PKSJ Malware\1\VirusShare_0fea640a7da27f365b3675f73626b9c9.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:5012

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:4072

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\contract_.dll
Filesize
234KB

MD5
4224c05eb24238e24a124eecee907cec

SHA1
551979d132b3e45aaab7ea8e18441b303f49a74a

SHA256
6d5c207c998990f1e7c527971dfe0eb6d2b21fca136d616e6e211019d1c77698

SHA512
ef4b9f06fcdd091ac818974cd777a6fdf5cd88a70f8f5fad33173ae70905b8487d60acb4af2ddb6c73d2789085f28ec1134e5efdc6a9659b0417d8fa350e7638

Download Submit
memory/4072-140-0x0000000000000000-mapping.dmp

Download
memory/5012-136-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/5012-133-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/5012-132-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/5012-137-0x00007FFB61FD0000-0x00007FFB61FE0000-memory.dmp

Filesize
64KB

Download
memory/5012-138-0x00007FFB61FD0000-0x00007FFB61FE0000-memory.dmp

Filesize
64KB

Download
memory/5012-139-0x000001C7F1580000-0x000001C7F1584000-memory.dmp

Filesize
16KB

Download
memory/5012-134-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/5012-135-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/5012-142-0x000001C7F4F42000-0x000001C7F4F44000-memory.dmp

Filesize
8KB

Download
memory/5012-143-0x000001C7F6ED0000-0x000001C7F6ED3000-memory.dmp

Filesize
12KB

Download
memory/5012-144-0x000000006C540000-0x000000006C592000-memory.dmp

Filesize
328KB

Download
memory/5012-145-0x000001C7F4F42000-0x000001C7F4F44000-memory.dmp

Filesize
8KB

Download
memory/5012-147-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/5012-148-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/5012-149-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/5012-150-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download