4b60f16267cccc012996728c348d161d8bf6fcfa0f4a0ec5e4ac7f66e4561751

General

Target

4b60f16267cccc012996728c348d161d8bf6fcfa0f4a0ec5e4ac7f66e4561751.xlsm
Size

102KB
MD5

2e99b5266f0e8c18d6f467a91173f79f
SHA1

5754d735aa4b2630224f825dd80aa0d08f5ec827
SHA256

4b60f16267cccc012996728c348d161d8bf6fcfa0f4a0ec5e4ac7f66e4561751
SHA512

27eb43b1410c90c1fc80c4d396d23363827e0f4359cfc8dbfd59f36cd06b93b470f4fe20d16f31aa51c4927561003465aa3884fa10c93027e2a0ba9cebb4b9b4
SSDEEP

1536:6HpqqHip20B+axURtKckrr9qZGrhD1GW+wZk4lHpuaI4qMCh:MBHiHHxutKckrpqZGh+wrlJuaIjV

Score

10^/10

discovery

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://luoicauthang.com/css/m6RaglUnYVXJ7mw2W/

Signatures

Process spawned unexpected child process 1 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	5028	1404	rundll32.exe	82

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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

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
1404	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1404	EXCEL.EXE
1404	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
1404	EXCEL.EXE
1404	EXCEL.EXE
1404	EXCEL.EXE
1404	EXCEL.EXE
1404	EXCEL.EXE
1404	EXCEL.EXE
1404	EXCEL.EXE
1404	EXCEL.EXE
1404	EXCEL.EXE
1404	EXCEL.EXE
1404	EXCEL.EXE
1404	EXCEL.EXE
1404	EXCEL.EXE
1404	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1404 wrote to memory of 5028	1404	EXCEL.EXE	91
PID 1404 wrote to memory of 5028	1404	EXCEL.EXE	91
PID 1404 wrote to memory of 5028	1404	EXCEL.EXE	91

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\4b60f16267cccc012996728c348d161d8bf6fcfa0f4a0ec5e4ac7f66e4561751.xlsm"
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:1404
- C:\Windows\SysWow64\rundll32.exe
  C:\Windows\SysWow64\rundll32.exe ..\bestb.ocx,D"&"l"&"l"&"R"&"eg"&"i"&"s"&"t"&"e"&"rS"&"e"&"rver
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:5028

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

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
14072a475717656d436b57cfb498a18b

SHA1
4b0c345bac4d1dc684436186bb3e5a0f19963b5e

SHA256
8b73e1d059b282599e39b854ad61410f396448debbb7f1f58e6b19b38864da71

SHA512
8ce6be738a3a626ddfd238172ba6250d23751698c805c51a98bf6031f9e5e6a086a127866eaf2d1ab8ebd1eef92c196c0e2fc312b5aa3f393001d56e4d2922fd

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

Filesize
24KB

MD5
2f977d5872cb7eb7a560eb0b0a540baf

SHA1
c8e2d0134632884763d3922bdae5d1245207259c

SHA256
3b8a21beff2c38dad1d682f7876cf1233fd7a8325b99292400828b6d9c4b3c38

SHA512
15f89220c95de08df80eeabf3acbfed6490e43df568d3869bf39677819ff017f68a64c986c2bd86aa39b13ad96317f84fcdb6a51e2f1bdb54c3992862b309b69

Download Submit
memory/1404-13-0x00007FFD1D390000-0x00007FFD1D3A0000-memory.dmp

Filesize
64KB

Download
memory/1404-11-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-6-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-5-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-4-0x00007FFD1FC70000-0x00007FFD1FC80000-memory.dmp

Filesize
64KB

Download
memory/1404-8-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-7-0x00007FFD1FC70000-0x00007FFD1FC80000-memory.dmp

Filesize
64KB

Download
memory/1404-10-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-12-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-14-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-1-0x00007FFD1FC70000-0x00007FFD1FC80000-memory.dmp

Filesize
64KB

Download
memory/1404-0-0x00007FFD1FC70000-0x00007FFD1FC80000-memory.dmp

Filesize
64KB

Download
memory/1404-9-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-15-0x00007FFD1D390000-0x00007FFD1D3A0000-memory.dmp

Filesize
64KB

Download
memory/1404-17-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-19-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-20-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-18-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-16-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-2-0x00007FFD1FC70000-0x00007FFD1FC80000-memory.dmp

Filesize
64KB

Download
memory/1404-36-0x00007FFD5FBF0000-0x00007FFD5FDE5000-memory.dmp

Filesize
2.0MB

Download
memory/1404-3-0x00007FFD5FC8D000-0x00007FFD5FC8E000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads