f4643ab52e51d05bce715ec6d0baae09ef15763318928c1ed8d3c24b72df3602

General

Target

c77cd6616dedbf3669345842f7231830.xls
Size

661KB
MD5

c77cd6616dedbf3669345842f7231830
SHA1

2a1bd1b6e7048c8e051fcc95707a6f2e6bc61b88
SHA256

f4643ab52e51d05bce715ec6d0baae09ef15763318928c1ed8d3c24b72df3602
SHA512

b036233b58e2fa6c5c2732e692340fc89e04614606903cd4aaa5ddd80950d35dc1d570c46a1fb48b4618e05dd3629da5662652743915ed33d60f2d7ae29c0ed5

Score

10^/10

Malware Config

Signatures

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	2604	632	mshta.exe	EXCEL.EXE

Blocklisted process makes network request 5 IoCs

Processes:

mshta.exe

flow pid process

23 2604 mshta.exe
26 2604 mshta.exe
30 2604 mshta.exe
33 2604 mshta.exe
38 2604 mshta.exe

flow	pid	process
23	2604	mshta.exe
26	2604	mshta.exe
30	2604	mshta.exe
33	2604	mshta.exe
38	2604	mshta.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

632 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
632	EXCEL.EXE
632	EXCEL.EXE
632	EXCEL.EXE
632	EXCEL.EXE
632	EXCEL.EXE
632	EXCEL.EXE
632	EXCEL.EXE
632	EXCEL.EXE
632	EXCEL.EXE
632	EXCEL.EXE
632	EXCEL.EXE
632	EXCEL.EXE
632	EXCEL.EXE
632	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 632 wrote to memory of 2604 632 EXCEL.EXE mshta.exe
PID 632 wrote to memory of 2604 632 EXCEL.EXE mshta.exe

description	pid	process	target process
PID 632 wrote to memory of 2604	632	EXCEL.EXE	mshta.exe
PID 632 wrote to memory of 2604	632	EXCEL.EXE	mshta.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\c77cd6616dedbf3669345842f7231830.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:632
- C:\Windows\SYSTEM32\mshta.exe
  mshta C:\ProgramData//klDYMFormat.sct
  2⤵
  - Process spawned unexpected child process
  - Blocklisted process makes network request
  PID:2604

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\klDYMFormat.sct

MD5
bdaa2a11f77d89d3f5e81f9d17fb3b87

SHA1
0ae03773f2dfde92f8a58d03226462d178a8c85e

SHA256
5f0a0616ea02e338125ad190bdfa6e8fb6f2a8f4f5845252a8b5422bd283cd88

SHA512
b06f4d5627fa0d27c9e1aaa45597d92edec4e103413dc92719c4162e8de3a06022e471dbd283a6b1e9da466b10315b67c8faf74215d2213d8ae2fa0ae42a53ed

Download Submit
memory/632-117-0x00007FFAC4B10000-0x00007FFAC4B20000-memory.dmp

Filesize
64KB

Download
memory/632-116-0x00007FFAC4B10000-0x00007FFAC4B20000-memory.dmp

Filesize
64KB

Download
memory/632-114-0x00007FF6C1CE0000-0x00007FF6C5296000-memory.dmp

Filesize
53.7MB

Download
memory/632-118-0x00007FFAC4B10000-0x00007FFAC4B20000-memory.dmp

Filesize
64KB

Download
memory/632-121-0x00007FFAC4B10000-0x00007FFAC4B20000-memory.dmp

Filesize
64KB

Download
memory/632-122-0x00007FFAE52A0000-0x00007FFAE638E000-memory.dmp

Filesize
16.9MB

Download
memory/632-123-0x00007FFAE3210000-0x00007FFAE5105000-memory.dmp

Filesize
31.0MB

Download
memory/632-115-0x00007FFAC4B10000-0x00007FFAC4B20000-memory.dmp

Filesize
64KB

Download
memory/632-302-0x00007FFAC4B10000-0x00007FFAC4B20000-memory.dmp

Filesize
64KB

Download
memory/632-303-0x00007FFAC4B10000-0x00007FFAC4B20000-memory.dmp

Filesize
64KB

Download
memory/632-304-0x00007FFAC4B10000-0x00007FFAC4B20000-memory.dmp

Filesize
64KB

Download
memory/632-305-0x00007FFAC4B10000-0x00007FFAC4B20000-memory.dmp

Filesize
64KB

Download
memory/2604-265-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads