8f99cab09eb9674d602d903701978b39bbe6bf9eb123a358837b44e4076a5e86

General

Target

8f99cab09eb9674d602d903701978b39bbe6bf9eb123a358837b44e4076a5e86.xlsm
Size

84KB
MD5

92fcad2ae760b160b5a7d239afa4cc49
SHA1

ff853bd7c88b967f39ac30c5146070562aecdc2c
SHA256

8f99cab09eb9674d602d903701978b39bbe6bf9eb123a358837b44e4076a5e86
SHA512

da562099ce4ab8e0956312730c997ce84254b21c77ed19c0112783f3ab6f55ab1ee2a7fb3345e36bded663c6ef080b0cf281f13ed954c818136832ff03ad26ae

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://insertcatherreview.xyz/wp-includes/o23k5ted/

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	1812	2608	rundll32.exe	EXCEL.EXE

Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

1812 rundll32.exe
1152 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Cxbyeqlard\aesy.uhv rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
1812	rundll32.exe
1152	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Cxbyeqlard\aesy.uhv	rundll32.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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

2608 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exe

description	pid	process	target process
PID 2608 wrote to memory of 1812	2608	EXCEL.EXE	rundll32.exe
PID 2608 wrote to memory of 1812	2608	EXCEL.EXE	rundll32.exe
PID 2608 wrote to memory of 1812	2608	EXCEL.EXE	rundll32.exe
PID 1812 wrote to memory of 1152	1812	rundll32.exe	rundll32.exe
PID 1812 wrote to memory of 1152	1812	rundll32.exe	rundll32.exe
PID 1812 wrote to memory of 1152	1812	rundll32.exe	rundll32.exe
PID 1152 wrote to memory of 944	1152	rundll32.exe	rundll32.exe
PID 1152 wrote to memory of 944	1152	rundll32.exe	rundll32.exe
PID 1152 wrote to memory of 944	1152	rundll32.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\8f99cab09eb9674d602d903701978b39bbe6bf9eb123a358837b44e4076a5e86.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2608

C:\Windows\SysWow64\rundll32.exe
C:\Windows\SysWow64\rundll32.exe ..\adi.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1812

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\adi.ocx",DllRegisterServer
3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1152

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Cxbyeqlard\aesy.uhv",ICZyAJtaoiL
4⤵
PID:944

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\adi.ocx

MD5
1aefce9c16e2dcf7783a8cb2901205cd

SHA1
beffc60b3e80ea969a67cc04eda3c9df22b92f65

SHA256
af7e2335dd4291663c9e69bd7007d4db6454217b9c4cdfec1685a0e092d3a9a3

SHA512
bf5bee5fa53421ef13cf2e28c21de3b63f834ee3224bf01ac09368985e6597a351543274b9b97f3b544db8a0cbf54a30f8d7d843570ce4d1fc7ffb4c6b732edc

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\Users\Admin\adi.ocx

MD5
1aefce9c16e2dcf7783a8cb2901205cd

SHA1
beffc60b3e80ea969a67cc04eda3c9df22b92f65

SHA256
af7e2335dd4291663c9e69bd7007d4db6454217b9c4cdfec1685a0e092d3a9a3

SHA512
bf5bee5fa53421ef13cf2e28c21de3b63f834ee3224bf01ac09368985e6597a351543274b9b97f3b544db8a0cbf54a30f8d7d843570ce4d1fc7ffb4c6b732edc

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\Users\Admin\adi.ocx

MD5
1aefce9c16e2dcf7783a8cb2901205cd

SHA1
beffc60b3e80ea969a67cc04eda3c9df22b92f65

SHA256
af7e2335dd4291663c9e69bd7007d4db6454217b9c4cdfec1685a0e092d3a9a3

SHA512
bf5bee5fa53421ef13cf2e28c21de3b63f834ee3224bf01ac09368985e6597a351543274b9b97f3b544db8a0cbf54a30f8d7d843570ce4d1fc7ffb4c6b732edc

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memory/944-267-0x0000000000000000-mapping.dmp

Download
memory/1152-268-0x0000000002B70000-0x0000000002B99000-memory.dmp

Filesize
164KB

Download
memory/1152-264-0x0000000000000000-mapping.dmp

Download
memory/1812-256-0x0000000000000000-mapping.dmp

Download
memory/1812-266-0x0000000002E00000-0x0000000002EAE000-memory.dmp

Filesize
696KB

Download
memory/2608-127-0x00007FFB04400000-0x00007FFB04410000-memory.dmp

Filesize
64KB

Download
memory/2608-115-0x00007FFB04400000-0x00007FFB04410000-memory.dmp

Filesize
64KB

Download
memory/2608-121-0x0000020D41F60000-0x0000020D41F62000-memory.dmp

Filesize
8KB

Download
memory/2608-120-0x0000020D41F60000-0x0000020D41F62000-memory.dmp

Filesize
8KB

Download
memory/2608-119-0x0000020D41F60000-0x0000020D41F62000-memory.dmp

Filesize
8KB

Download
memory/2608-118-0x00007FFB04400000-0x00007FFB04410000-memory.dmp

Filesize
64KB

Download
memory/2608-117-0x00007FFB04400000-0x00007FFB04410000-memory.dmp

Filesize
64KB

Download
memory/2608-116-0x00007FFB04400000-0x00007FFB04410000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads