27d5342d287598dc00361e27aaaa435658ecdbba5946fa1f57676e19c1bd5b51

General

Target

27d5342d287598dc00361e27aaaa435658ecdbba5946fa1f57676e19c1bd5b51.xlsm
Size

99KB
MD5

b9d75dd60fad1aff6ae93665148b9d73
SHA1

eea4727bbd0360cb18b36361977ddc4ece270f06
SHA256

27d5342d287598dc00361e27aaaa435658ecdbba5946fa1f57676e19c1bd5b51
SHA512

ecf45e5513adb528f15cfe709536964878bbb2d643e2dfce428358819cdcf335ed7955d5eee89b8784ab9de5b8ae681d4a025cc38a6f616dc0922d4bd6ede9b6

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://avionxpress.com/lp/T9b1Bga4FdDfP5HI/

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	1284	680	rundll32.exe	EXCEL.EXE

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

42 2196 rundll32.exe
43 2196 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

1284 rundll32.exe
1300 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

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

System Information Discovery
T1082

flow	pid	process
42	2196	rundll32.exe
43	2196	rundll32.exe

pid	process
1284	rundll32.exe
1300	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Iwaekfbriohdwc\pfytshgddtanqa.psh	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 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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

680 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

2196 rundll32.exe
2196 rundll32.exe

pid	process
2196	rundll32.exe
2196	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
680	EXCEL.EXE
680	EXCEL.EXE
680	EXCEL.EXE
680	EXCEL.EXE
680	EXCEL.EXE
680	EXCEL.EXE
680	EXCEL.EXE
680	EXCEL.EXE
680	EXCEL.EXE
680	EXCEL.EXE
680	EXCEL.EXE
680	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	process	target process
PID 680 wrote to memory of 1284	680	EXCEL.EXE	rundll32.exe
PID 680 wrote to memory of 1284	680	EXCEL.EXE	rundll32.exe
PID 680 wrote to memory of 1284	680	EXCEL.EXE	rundll32.exe
PID 1284 wrote to memory of 1300	1284	rundll32.exe	rundll32.exe
PID 1284 wrote to memory of 1300	1284	rundll32.exe	rundll32.exe
PID 1284 wrote to memory of 1300	1284	rundll32.exe	rundll32.exe
PID 1300 wrote to memory of 3172	1300	rundll32.exe	rundll32.exe
PID 1300 wrote to memory of 3172	1300	rundll32.exe	rundll32.exe
PID 1300 wrote to memory of 3172	1300	rundll32.exe	rundll32.exe
PID 3172 wrote to memory of 2196	3172	rundll32.exe	rundll32.exe
PID 3172 wrote to memory of 2196	3172	rundll32.exe	rundll32.exe
PID 3172 wrote to memory of 2196	3172	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\27d5342d287598dc00361e27aaaa435658ecdbba5946fa1f57676e19c1bd5b51.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:680

C:\Windows\SysWow64\rundll32.exe
C:\Windows\SysWow64\rundll32.exe ..\ourl.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1284

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\ourl.ocx",DllRegisterServer
3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1300

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Iwaekfbriohdwc\pfytshgddtanqa.psh",jEcN
4⤵
- Suspicious use of WriteProcessMemory
PID:3172

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Iwaekfbriohdwc\pfytshgddtanqa.psh",DllRegisterServer
5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:2196

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

2

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\ourl.ocx
MD5
562dab32542a479f5047898e2db9dfa4

SHA1
3123cba17796285c7176e333d6c46eedb74c5f7d

SHA256
7b996a7128a06f089f0b4a46465ef2027383b348f8577d25e77a12f65877dec5

SHA512
16898a79955cec1723c8f731df380c603f80ae44d96f3a40206d926af31c52633c5f27ded975d89afec849403ae83bcc8543882c74cdc83f920c1c16084c9994

Download Submit
\Users\Admin\ourl.ocx
MD5
562dab32542a479f5047898e2db9dfa4

SHA1
3123cba17796285c7176e333d6c46eedb74c5f7d

SHA256
7b996a7128a06f089f0b4a46465ef2027383b348f8577d25e77a12f65877dec5

SHA512
16898a79955cec1723c8f731df380c603f80ae44d96f3a40206d926af31c52633c5f27ded975d89afec849403ae83bcc8543882c74cdc83f920c1c16084c9994

Download Submit
\Users\Admin\ourl.ocx
MD5
562dab32542a479f5047898e2db9dfa4

SHA1
3123cba17796285c7176e333d6c46eedb74c5f7d

SHA256
7b996a7128a06f089f0b4a46465ef2027383b348f8577d25e77a12f65877dec5

SHA512
16898a79955cec1723c8f731df380c603f80ae44d96f3a40206d926af31c52633c5f27ded975d89afec849403ae83bcc8543882c74cdc83f920c1c16084c9994

Download Submit
memory/680-121-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Filesize
64KB

Download
memory/680-116-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Filesize
64KB

Download
memory/680-128-0x00007FF8ABF00000-0x00007FF8ABF10000-memory.dmp

Filesize
64KB

Download
memory/680-129-0x00007FF8ABF00000-0x00007FF8ABF10000-memory.dmp

Filesize
64KB

Download
memory/680-118-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Filesize
64KB

Download
memory/680-117-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Filesize
64KB

Download
memory/680-115-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Filesize
64KB

Download
memory/1284-266-0x0000000000D50000-0x0000000000D78000-memory.dmp

Filesize
160KB

Download
memory/1300-272-0x0000000005160000-0x0000000005188000-memory.dmp

Filesize
160KB

Download
memory/1300-274-0x0000000005280000-0x00000000052A8000-memory.dmp

Filesize
160KB

Download
memory/1300-276-0x0000000005400000-0x0000000005428000-memory.dmp

Filesize
160KB

Download
memory/1300-278-0x0000000005460000-0x0000000005488000-memory.dmp

Filesize
160KB

Download
memory/1300-282-0x00000000055E0000-0x0000000005608000-memory.dmp

Filesize
160KB

Download
memory/2196-283-0x0000000000DA0000-0x0000000000DC8000-memory.dmp

Filesize
160KB

Download
memory/2196-285-0x0000000001200000-0x0000000001228000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads