a17257a4a1a71d882ccfd9037e726639b49a70bde211c5dc647492f26d27c430

General

Target

a17257a4a1a71d882ccfd9037e726639b49a70bde211c5dc647492f26d27c430.xls
Size

91KB
MD5

50edf8e28a4c5f13e49b31a07ce50ab5
SHA1

73dcd5bb08692eedccc64c5e42d450acb4961ea9
SHA256

a17257a4a1a71d882ccfd9037e726639b49a70bde211c5dc647492f26d27c430
SHA512

3c2ec56da9616f23a69ededeeb21cfc86d7e5750701a14e498e2a5e21bf99316175f90330cc0c8cad6224a9ea28a61624112b7132277c1b7a72d0e98d7024772
SSDEEP

1536:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgEbCXuZH4gb4CEn9J4ZMEM:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgF

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://www.muyehuayi.com/cmp/8asA99KPsyA/v6lUsWbLen/

xlm40.dropper

http://concivilpa.com.py/wp-admin/i3CQu9dzDrMW/

xlm40.dropper

https://wijsneusmedia.nl/cgi-bin/kFB/

xlm40.dropper

http://www.angloextrema.com.br/assets/oEt1yYckHKlnNIq/

Signatures

Process spawned unexpected child process 4 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1468	3432	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	684	3432	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3460	3432	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1296	3432	regsvr32.exe	82

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 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

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

pid	Process
3432	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3432	EXCEL.EXE
3432	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3432	EXCEL.EXE
3432	EXCEL.EXE
3432	EXCEL.EXE
3432	EXCEL.EXE
3432	EXCEL.EXE
3432	EXCEL.EXE
3432	EXCEL.EXE
3432	EXCEL.EXE
3432	EXCEL.EXE
3432	EXCEL.EXE
3432	EXCEL.EXE
3432	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3432 wrote to memory of 1468	3432	EXCEL.EXE	86
PID 3432 wrote to memory of 1468	3432	EXCEL.EXE	86
PID 3432 wrote to memory of 684	3432	EXCEL.EXE	87
PID 3432 wrote to memory of 684	3432	EXCEL.EXE	87
PID 3432 wrote to memory of 3460	3432	EXCEL.EXE	89
PID 3432 wrote to memory of 3460	3432	EXCEL.EXE	89
PID 3432 wrote to memory of 1296	3432	EXCEL.EXE	90
PID 3432 wrote to memory of 1296	3432	EXCEL.EXE	90

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\a17257a4a1a71d882ccfd9037e726639b49a70bde211c5dc647492f26d27c430.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3432
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:1468
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:684
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:3460
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:1296

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

Filesize
3KB

MD5
30a438160f41bdc210b5584ca0d881ba

SHA1
adc98b01429a4a0d807e6f1e7af377e458dfdd1a

SHA256
004eed322d5d231fc52beaa8e8f9a4ce9a2fbdad9e03c0c05b4a7cd0b60e59a6

SHA512
b47dab95b66a279fb10c3a4d7142c363bfcfd08875742aa9f06216fd972cf27b440c38e96e15fd186abc4b68cf8879270d71b5f19737153f799c438f142a3b31

Download Submit
memory/3432-10-0x00007FF811AF0000-0x00007FF811CE5000-memory.dmp

Filesize
2.0MB

Download
memory/3432-35-0x00007FF811AF0000-0x00007FF811CE5000-memory.dmp

Filesize
2.0MB

Download
memory/3432-3-0x00007FF811B8D000-0x00007FF811B8E000-memory.dmp

Filesize
4KB

Download
memory/3432-1-0x00007FF7D1B70000-0x00007FF7D1B80000-memory.dmp

Filesize
64KB

Download
memory/3432-5-0x00007FF811AF0000-0x00007FF811CE5000-memory.dmp

Filesize
2.0MB

Download
memory/3432-6-0x00007FF7D1B70000-0x00007FF7D1B80000-memory.dmp

Filesize
64KB

Download
memory/3432-8-0x00007FF811AF0000-0x00007FF811CE5000-memory.dmp

Filesize
2.0MB

Download
memory/3432-11-0x00007FF7CF520000-0x00007FF7CF530000-memory.dmp

Filesize
64KB

Download
memory/3432-2-0x00007FF7D1B70000-0x00007FF7D1B80000-memory.dmp

Filesize
64KB

Download
memory/3432-4-0x00007FF7D1B70000-0x00007FF7D1B80000-memory.dmp

Filesize
64KB

Download
memory/3432-7-0x00007FF811AF0000-0x00007FF811CE5000-memory.dmp

Filesize
2.0MB

Download
memory/3432-12-0x00007FF811AF0000-0x00007FF811CE5000-memory.dmp

Filesize
2.0MB

Download
memory/3432-15-0x00007FF811AF0000-0x00007FF811CE5000-memory.dmp

Filesize
2.0MB

Download
memory/3432-14-0x00007FF811AF0000-0x00007FF811CE5000-memory.dmp

Filesize
2.0MB

Download
memory/3432-17-0x00007FF811AF0000-0x00007FF811CE5000-memory.dmp

Filesize
2.0MB

Download
memory/3432-16-0x00007FF7CF520000-0x00007FF7CF530000-memory.dmp

Filesize
64KB

Download
memory/3432-13-0x00007FF811AF0000-0x00007FF811CE5000-memory.dmp

Filesize
2.0MB

Download
memory/3432-0-0x00007FF7D1B70000-0x00007FF7D1B80000-memory.dmp

Filesize
64KB

Download
memory/3432-36-0x00007FF811AF0000-0x00007FF811CE5000-memory.dmp

Filesize
2.0MB

Download
memory/3432-9-0x00007FF811AF0000-0x00007FF811CE5000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads