cf7c452c80ad1a90af51fb9584698d3cbd9455c1bb73bd38a982d5494edcae39

General

Target

Outstanding INVOICE DTQC-158641-173 04-07-2022_1402.xls
Size

95KB
MD5

fda9b005a725d9f698e24b16c3b0eb2a
SHA1

a3bbffdd39f23b08035496f8d394354384e2397f
SHA256

6fc29cee6754fe79ad16a2d1df7eccd43798c9a1bf4dad634cbd7697700c154e
SHA512

169d4198776efb06b740f99d113825e446b522cb720d728029a8c1eb7594c7cdb6a30c645359ac9ac5579711870cde845c0e5b002c21c67a5bca2e3bae104703
SSDEEP

1536:iFKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg0yHuS4hcTO97v7UYdEJmA/:cKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgH

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://f5ajans.com/merthel/vvWRK/KVVGB6o7SPoorfaI/

xlm40.dropper

http://emett.com/images/kk2l4zoRKwv2vIEK/

xlm40.dropper

https://www.duinrand-s.nl/Nieuws/S9Y8DumfrBU1r5unO/

xlm40.dropper

http://galileuconcursos.com.br/wp-admin/Pt8VGg/

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	4708	2108	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2076	2108	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4892	2108	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1672	2108	regsvr32.exe	81

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
2108	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2108	EXCEL.EXE
2108	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2108	EXCEL.EXE
2108	EXCEL.EXE
2108	EXCEL.EXE
2108	EXCEL.EXE
2108	EXCEL.EXE
2108	EXCEL.EXE
2108	EXCEL.EXE
2108	EXCEL.EXE
2108	EXCEL.EXE
2108	EXCEL.EXE
2108	EXCEL.EXE
2108	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 4708	2108	EXCEL.EXE	90
PID 2108 wrote to memory of 4708	2108	EXCEL.EXE	90
PID 2108 wrote to memory of 2076	2108	EXCEL.EXE	91
PID 2108 wrote to memory of 2076	2108	EXCEL.EXE	91
PID 2108 wrote to memory of 4892	2108	EXCEL.EXE	92
PID 2108 wrote to memory of 4892	2108	EXCEL.EXE	92
PID 2108 wrote to memory of 1672	2108	EXCEL.EXE	95
PID 2108 wrote to memory of 1672	2108	EXCEL.EXE	95

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Outstanding INVOICE DTQC-158641-173 04-07-2022_1402.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:2108
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\uoya1.ocx
  2⤵
  - Process spawned unexpected child process
  PID:4708
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\uoya2.ocx
  2⤵
  - Process spawned unexpected child process
  PID:2076
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\uoya3.ocx
  2⤵
  - Process spawned unexpected child process
  PID:4892
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\uoya4.ocx
  2⤵
  - Process spawned unexpected child process
  PID:1672

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

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Downloads

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

Filesize
1KB

MD5
bd72678f1b91b6786636b31d58e5c2e7

SHA1
ca0a9ae397153ce2d7bd723920b0971fb176a035

SHA256
038fb0a28575e7364c7a4796bf19086ef98e51b74bef4fadb9cde22b4ad38d3f

SHA512
dd00268a4231bb5272b4388dd33d5cea79edd3b2499a7ba87bf8b728bc1c8e1815b6931e38d48f1f91795ca6c70e40e0a90c7ba86df10f9a6625172ba2549b17

Download Submit
C:\Users\Admin\uoya3.ocx

Filesize
33KB

MD5
38e58d5fa77dbcc313c91a0a49dc4ba8

SHA1
1029087462def3dbd90041a43283f3917dc9da1c

SHA256
a32245acdb3894736baf5f9041ae278c766957b5ebe1f08da0d2249165b26717

SHA512
fecf9a0006da91b27296b160798cfe0dceee41b5d213f35c0a0193157d67b98d1aef2e0322caecf3df8c1eb5b0bb97794beded32ad494e09b5001cfe5423c516

Download Submit
memory/2108-3-0x00007FFF360AD000-0x00007FFF360AE000-memory.dmp

Filesize
4KB

Download
memory/2108-13-0x00007FFEF3DF0000-0x00007FFEF3E00000-memory.dmp

Filesize
64KB

Download
memory/2108-10-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-8-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-7-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-6-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-5-0x00007FFEF6090000-0x00007FFEF60A0000-memory.dmp

Filesize
64KB

Download
memory/2108-11-0x00007FFEF3DF0000-0x00007FFEF3E00000-memory.dmp

Filesize
64KB

Download
memory/2108-9-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-14-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-0-0x00007FFEF6090000-0x00007FFEF60A0000-memory.dmp

Filesize
64KB

Download
memory/2108-4-0x00007FFEF6090000-0x00007FFEF60A0000-memory.dmp

Filesize
64KB

Download
memory/2108-12-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-15-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-17-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-18-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-16-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-20-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-19-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-39-0x00007FFF36010000-0x00007FFF36205000-memory.dmp

Filesize
2.0MB

Download
memory/2108-1-0x00007FFEF6090000-0x00007FFEF60A0000-memory.dmp

Filesize
64KB

Download
memory/2108-2-0x00007FFEF6090000-0x00007FFEF60A0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads