0fba1f02cd2872efc4cdc6806bc49d786005f590971ee31f97ce71c1ccf87fe2

Resubmissions

10-04-2022 07:53

220410-jq25nsgaen 10

10-04-2020 08:18

200410-tmzpvazbjn 10

Analysis

max time kernel
30s
max time network
33s
platform
windows10-2004_x64
resource
win10v2004-20220331-en
submitted
10-04-2022 07:53

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General

Target

William Smith Resume.xls
Size

163KB
MD5

0a054818926d97f4100774255a908dba
SHA1

de572eddd30b34d1e328c8d5fb986cc1e04c82e8
SHA256

0fba1f02cd2872efc4cdc6806bc49d786005f590971ee31f97ce71c1ccf87fe2
SHA512

21659d1132eef51aaf43f7c3dffde06e7018e7d9847c7a7106eb9aee2747f9c6a967a80ab052db17903b0ac9cb63ee3c8371725f4206decff13dbbe996bcf3f1

Score

10^/10

suricata

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://march262020.com/files/april8.dll

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

rundll32.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	4536	1708	rundll32.exe	EXCEL.EXE

suricata: ET MALWARE Possible Compromised Host AnubisNetworks Sinkhole Cookie Value Snkz
suricata: ET MALWARE Possible Compromised Host AnubisNetworks Sinkhole Cookie Value Snkz
suricata

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

1708 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1708	EXCEL.EXE
1708	EXCEL.EXE
1708	EXCEL.EXE
1708	EXCEL.EXE
1708	EXCEL.EXE
1708	EXCEL.EXE
1708	EXCEL.EXE
1708	EXCEL.EXE
1708	EXCEL.EXE
1708	EXCEL.EXE
1708	EXCEL.EXE
1708	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1708 wrote to memory of 4536	1708	EXCEL.EXE	rundll32.exe
PID 1708 wrote to memory of 4536	1708	EXCEL.EXE	rundll32.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\William Smith Resume.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1708

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\ProgramData\ieTneVi.dll,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4536

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/1708-124-0x00007FF83FB50000-0x00007FF83FB60000-memory.dmp

Filesize
64KB

Download
memory/1708-126-0x00007FF83FB50000-0x00007FF83FB60000-memory.dmp

Filesize
64KB

Download
memory/1708-125-0x00007FF83FB50000-0x00007FF83FB60000-memory.dmp

Filesize
64KB

Download
memory/1708-127-0x00007FF83FB50000-0x00007FF83FB60000-memory.dmp

Filesize
64KB

Download
memory/1708-128-0x00007FF83FB50000-0x00007FF83FB60000-memory.dmp

Filesize
64KB

Download
memory/4536-129-0x0000000000000000-mapping.dmp

Download