f8681f024211d9f11778041d42d8021939fc529d931a44a0340c20b1cddb56f7

General

Target

f8681f024211d9f11778041d42d8021939fc529d931a44a0340c20b1cddb56f7.xls
Size

70KB
MD5

17a1900903d0e713e4531a0815838832
SHA1

cc81f00a4334196ef5e5963f38c6d09c31c6878b
SHA256

f8681f024211d9f11778041d42d8021939fc529d931a44a0340c20b1cddb56f7
SHA512

5c42cfebccba442c4127fe93a3a8e3579b524387fc30dc3f95ca9462b58f3482eb4612981c88ec34db8c9feacc29b4e183e9c68dddeb95ce5b1659d8a5582591
SSDEEP

1536:OhKpb8rGYrMPe3q7Q0XV5xtezE8vG8UM+KJ+hDcnTLiQrRTZws8EI:uKpb8rGYrMPe3q7Q0XV5xtezE8vG8UMG

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://sacvasanth.com/public/lyP2lh1hlJr/

xlm40.dropper

https://webguruindia.com/theme/wTbEyLVvMNB3j/

xlm40.dropper

http://stockmorehouse.com/Casa_Grande/AS4VPkTsOqWDGGO/

Signatures

Process spawned unexpected child process 3 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	1012	1408	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4700	1408	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	436	1408	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
1408	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1408	EXCEL.EXE
1408	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1408	EXCEL.EXE
1408	EXCEL.EXE
1408	EXCEL.EXE
1408	EXCEL.EXE
1408	EXCEL.EXE
1408	EXCEL.EXE
1408	EXCEL.EXE
1408	EXCEL.EXE
1408	EXCEL.EXE
1408	EXCEL.EXE
1408	EXCEL.EXE
1408	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1408 wrote to memory of 1012	1408	EXCEL.EXE	86
PID 1408 wrote to memory of 1012	1408	EXCEL.EXE	86
PID 1408 wrote to memory of 4700	1408	EXCEL.EXE	88
PID 1408 wrote to memory of 4700	1408	EXCEL.EXE	88
PID 1408 wrote to memory of 436	1408	EXCEL.EXE	89
PID 1408 wrote to memory of 436	1408	EXCEL.EXE	89

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\f8681f024211d9f11778041d42d8021939fc529d931a44a0340c20b1cddb56f7.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:1408
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cusoa1.ocx
  2⤵
  - Process spawned unexpected child process
  PID:1012
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cusoa2.ocx
  2⤵
  - Process spawned unexpected child process
  PID:4700
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cusoa3.ocx
  2⤵
  - Process spawned unexpected child process
  PID:436

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

memory/1408-0-0x00007FF8FD330000-0x00007FF8FD340000-memory.dmp

Filesize
64KB

Download
memory/1408-3-0x00007FF93D34D000-0x00007FF93D34E000-memory.dmp

Filesize
4KB

Download
memory/1408-1-0x00007FF8FD330000-0x00007FF8FD340000-memory.dmp

Filesize
64KB

Download
memory/1408-4-0x00007FF8FD330000-0x00007FF8FD340000-memory.dmp

Filesize
64KB

Download
memory/1408-2-0x00007FF8FD330000-0x00007FF8FD340000-memory.dmp

Filesize
64KB

Download
memory/1408-9-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1408-8-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1408-11-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1408-10-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1408-13-0x00007FF8FAF70000-0x00007FF8FAF80000-memory.dmp

Filesize
64KB

Download
memory/1408-12-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1408-7-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1408-15-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1408-14-0x00007FF8FAF70000-0x00007FF8FAF80000-memory.dmp

Filesize
64KB

Download
memory/1408-6-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1408-5-0x00007FF8FD330000-0x00007FF8FD340000-memory.dmp

Filesize
64KB

Download
memory/1408-25-0x00007FF93D2B0000-0x00007FF93D4A5000-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