ad89e9db50db436f299e047bb5ecd3646f5fc625e14a676c84dcf5a59c3a5195

General

Target

Claim-201194937-09242021.xls
Size

409KB
MD5

26ac2279ab58df05f8b2cadaabd01f63
SHA1

35461492837533325059ed6d450b2e5442116c63
SHA256

ad89e9db50db436f299e047bb5ecd3646f5fc625e14a676c84dcf5a59c3a5195
SHA512

7e5e988d5fcbd8a8649f5e25c0b23e029aca1fddf848b2f01ed099f147555fde13fa8273c2a409393549604738ea17a7631a35ed12cd55249753c8bb5b76ca25

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://179.43.152.158/44465.7781306713.dat

xlm40.dropper

http://185.183.96.206/44465.7781306713.dat

xlm40.dropper

http://94.140.114.130/44465.7781306713.dat

Signatures

Process spawned unexpected child process 3 IoCs

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

Processes:

regsvr32.exeregsvr32.exeregsvr32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1792	2068	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1540	2068	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1476	2068	regsvr32.exe	EXCEL.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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

pid process

2068 EXCEL.EXE
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

EXCEL.EXE

pid process

2068 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
2068	EXCEL.EXE
2068	EXCEL.EXE
2068	EXCEL.EXE
2068	EXCEL.EXE
2068	EXCEL.EXE
2068	EXCEL.EXE
2068	EXCEL.EXE
2068	EXCEL.EXE
2068	EXCEL.EXE
2068	EXCEL.EXE
2068	EXCEL.EXE
2068	EXCEL.EXE
2068	EXCEL.EXE
2068	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2068 wrote to memory of 1792	2068	EXCEL.EXE	regsvr32.exe
PID 2068 wrote to memory of 1792	2068	EXCEL.EXE	regsvr32.exe
PID 2068 wrote to memory of 1540	2068	EXCEL.EXE	regsvr32.exe
PID 2068 wrote to memory of 1540	2068	EXCEL.EXE	regsvr32.exe
PID 2068 wrote to memory of 1476	2068	EXCEL.EXE	regsvr32.exe
PID 2068 wrote to memory of 1476	2068	EXCEL.EXE	regsvr32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Claim-201194937-09242021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32 -silent ..\Violaf.der
  2⤵
  - Process spawned unexpected child process
  PID:1792
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32 -silent ..\Violaf1.der
  2⤵
  - Process spawned unexpected child process
  PID:1540
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32 -silent ..\Violaf2.der
  2⤵
  - Process spawned unexpected child process
  PID:1476

Network

MITRE ATT&CK Enterprise v6

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/1476-278-0x0000000000000000-mapping.dmp

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memory/1540-277-0x0000000000000000-mapping.dmp

Download
memory/1792-276-0x0000000000000000-mapping.dmp

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memory/2068-115-0x00007FF6C1DC0000-0x00007FF6C5376000-memory.dmp

Filesize
53.7MB

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memory/2068-116-0x00007FFDD9650000-0x00007FFDD9660000-memory.dmp

Filesize
64KB

Download
memory/2068-117-0x00007FFDD9650000-0x00007FFDD9660000-memory.dmp

Filesize
64KB

Download
memory/2068-118-0x00007FFDD9650000-0x00007FFDD9660000-memory.dmp

Filesize
64KB

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memory/2068-119-0x00007FFDD9650000-0x00007FFDD9660000-memory.dmp

Filesize
64KB

Download
memory/2068-122-0x00007FFDD9650000-0x00007FFDD9660000-memory.dmp

Filesize
64KB

Download
memory/2068-123-0x00007FFDF9D80000-0x00007FFDFAE6E000-memory.dmp

Filesize
16.9MB

Download
memory/2068-124-0x00007FFDF7E80000-0x00007FFDF9D75000-memory.dmp

Filesize
31.0MB

Download
memory/2068-267-0x0000016063030000-0x0000016063034000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads