2390e1c6e5620f5309acacba1522875762a6c18cb15bc5647d0d3e3f1de9f3ab

General

Target

a41dfd112fed7df825f4863b94e168d7.xls
Size

94KB
MD5

a41dfd112fed7df825f4863b94e168d7
SHA1

bd249e289dc3189a3709dd038c06ae428fdbf3f6
SHA256

487ec96355ff0dcffde022991ef51d52afdaab2901a80c3fe2a25b3a56dcbc7d
SHA512

df0993c926a3e11923d0161d6c7f5f30280fc862424ac2d79c20e53df95845848661a55484aa122ccb4b772d58b4b2237aa7d594b6f827afe8d8090f5487a4ee
SSDEEP

1536:NFKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgiHuS4hcTO97v7UYdEJmFCu:3Kpb8rGYrMPe3q7Q0XV5xtezEsi8/dgj

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://ewingconsulting.com/wp-includes/1sqrshC/

xlm40.dropper

http://www.llev.com.br/app/W2ehSSGWXTBpOf/

xlm40.dropper

http://digital21.cl/genchile/Pp1LDfwHR0IJPWHpq3R/

xlm40.dropper

http://nellydwiputri.co.id/images/lZfuoNe2vyr/

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	4296	4964	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2736	4964	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1248	4964	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4568	4964	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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4964	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4964	EXCEL.EXE
4964	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4964	EXCEL.EXE
4964	EXCEL.EXE
4964	EXCEL.EXE
4964	EXCEL.EXE
4964	EXCEL.EXE
4964	EXCEL.EXE
4964	EXCEL.EXE
4964	EXCEL.EXE
4964	EXCEL.EXE
4964	EXCEL.EXE
4964	EXCEL.EXE
4964	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4964 wrote to memory of 4296	4964	EXCEL.EXE	87
PID 4964 wrote to memory of 4296	4964	EXCEL.EXE	87
PID 4964 wrote to memory of 2736	4964	EXCEL.EXE	91
PID 4964 wrote to memory of 2736	4964	EXCEL.EXE	91
PID 4964 wrote to memory of 1248	4964	EXCEL.EXE	94
PID 4964 wrote to memory of 1248	4964	EXCEL.EXE	94
PID 4964 wrote to memory of 4568	4964	EXCEL.EXE	95
PID 4964 wrote to memory of 4568	4964	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\a41dfd112fed7df825f4863b94e168d7.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:4964
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\uoya1.ocx
  2⤵
  - Process spawned unexpected child process
  PID:4296
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\uoya2.ocx
  2⤵
  - Process spawned unexpected child process
  PID:2736
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\uoya3.ocx
  2⤵
  - Process spawned unexpected child process
  PID:1248
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\uoya4.ocx
  2⤵
  - Process spawned unexpected child process
  PID:4568

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
adcb44c7630c7edcde63453d0524f5d2

SHA1
c33e931c633f514ab7642aaca55114b2acffeb8f

SHA256
4dbb12a73e6e69cbad97ae1fa0a102d18758bb264dc559251c62a0992e225b35

SHA512
e6dd92cc2488b19481e70023a2a390a9a5c645bdec7f4f9ea68091f4f7df6774120792fa02932040f402b3594f57f142a3d26867980726135f92e23493cd878b

Download Submit
C:\Users\Admin\uoya1.ocx

Filesize
114B

MD5
e89f75f918dbdcee28604d4e09dd71d7

SHA1
f9d9055e9878723a12063b47d4a1a5f58c3eb1e9

SHA256
6dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023

SHA512
8df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0

Download Submit
memory/4964-14-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-4-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-7-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-8-0x00007FFF81090000-0x00007FFF810A0000-memory.dmp

Filesize
64KB

Download
memory/4964-10-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-9-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-6-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-16-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-15-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-13-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-3-0x00007FFF81090000-0x00007FFF810A0000-memory.dmp

Filesize
64KB

Download
memory/4964-0-0x00007FFF81090000-0x00007FFF810A0000-memory.dmp

Filesize
64KB

Download
memory/4964-5-0x00007FFF81090000-0x00007FFF810A0000-memory.dmp

Filesize
64KB

Download
memory/4964-17-0x00007FFF7EEA0000-0x00007FFF7EEB0000-memory.dmp

Filesize
64KB

Download
memory/4964-12-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-11-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-18-0x00007FFF7EEA0000-0x00007FFF7EEB0000-memory.dmp

Filesize
64KB

Download
memory/4964-1-0x00007FFFC10AD000-0x00007FFFC10AE000-memory.dmp

Filesize
4KB

Download
memory/4964-56-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-57-0x00007FFFC10AD000-0x00007FFFC10AE000-memory.dmp

Filesize
4KB

Download
memory/4964-58-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-59-0x00007FFFC1010000-0x00007FFFC1205000-memory.dmp

Filesize
2.0MB

Download
memory/4964-2-0x00007FFF81090000-0x00007FFF810A0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads