024ef55d8112d913021e2f8e38294052c40d177062afebc1b462f396c86c297b

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29/01/2024, 04:39

240129-e973taabe9 10

29/01/2024, 02:55

29/01/2024, 01:55

29/01/2024, 01:50

29/01/2024, 01:26

Analysis

max time kernel
101s
max time network
103s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 01:26

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General

Target

research-1646684671.xls
Size

648KB
MD5

927005139a0be61efe849c715d875dd2
SHA1

0f6a91916941d85b69e5320873a5d1c45055bc4e
SHA256

b23491ede17f9a5b7d6ad27d3051a2224c214a5afa2139e5147bd26319577f85
SHA512

30f40d913815f43395186b0957413e9f3f8999af97b3192372a4da86c6b5b32e3abd8adadb9623417521b57cff4e323d85d72e0e31c6be901b0926a0350c9b3e
SSDEEP

6144:Hknl9oBdySAx76F6XeyTVtW/9Ny9ABnl5/PBgxOHjuM9Mq:jl5/WxIjL

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://nws.visionconsulting.ro/N1G1KCXA/dot.html

xlm40.dropper

https://royalpalm.sparkblue.lk/vCNhYrq3Yg8/dot.html

Signatures

Process spawned unexpected child process 2 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	2848	2136	regsvr32.exe	84
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3724	2136	regsvr32.exe	84

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\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

pid	Process
2136	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2136	EXCEL.EXE
2136	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 2848	2136	EXCEL.EXE	89
PID 2136 wrote to memory of 2848	2136	EXCEL.EXE	89
PID 2136 wrote to memory of 3724	2136	EXCEL.EXE	90
PID 2136 wrote to memory of 3724	2136	EXCEL.EXE	90

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\research-1646684671.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32 -s ..\iroto.dll
  2⤵
  - Process spawned unexpected child process
  PID:2848
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32 -s ..\iroto1.dll
  2⤵
  - Process spawned unexpected child process
  PID:3724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\iroto.dll

Filesize
1KB

MD5
f46b2a086fb49d3e619fa1f074d977d5

SHA1
344251583796fc43e735af63b05f88be0199018e

SHA256
3057b6d06e8961d70732c900156da7bfae75f9f5984c274018c730f6017b89f4

SHA512
f0384b81c38924c22f6e8498765a45507da0ffd2b054b8d5687bc565849921ea6e600747c1def80d78cbf4fcaf5f041d6538f99d40f95a85af59e66fe8f3b104

Download Submit
memory/2136-4-0x00007FFCC1110000-0x00007FFCC1120000-memory.dmp

Filesize
64KB

Download
memory/2136-18-0x00007FFCBE7B0000-0x00007FFCBE7C0000-memory.dmp

Filesize
64KB

Download
memory/2136-2-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-7-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-6-0x00007FFCC1110000-0x00007FFCC1120000-memory.dmp

Filesize
64KB

Download
memory/2136-5-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-8-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-0-0x00007FFCC1110000-0x00007FFCC1120000-memory.dmp

Filesize
64KB

Download
memory/2136-9-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-11-0x00007FFCBE7B0000-0x00007FFCBE7C0000-memory.dmp

Filesize
64KB

Download
memory/2136-19-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-12-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-10-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-14-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-15-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-16-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-3-0x00007FFCC1110000-0x00007FFCC1120000-memory.dmp

Filesize
64KB

Download
memory/2136-17-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-13-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-20-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-22-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-21-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-23-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-1-0x00007FFCC1110000-0x00007FFCC1120000-memory.dmp

Filesize
64KB

Download
memory/2136-47-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-48-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-49-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-63-0x00007FFCC1110000-0x00007FFCC1120000-memory.dmp

Filesize
64KB

Download
memory/2136-64-0x00007FFCC1110000-0x00007FFCC1120000-memory.dmp

Filesize
64KB

Download
memory/2136-65-0x00007FFCC1110000-0x00007FFCC1120000-memory.dmp

Filesize
64KB

Download
memory/2136-67-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-66-0x00007FFCC1110000-0x00007FFCC1120000-memory.dmp

Filesize
64KB

Download
memory/2136-69-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download
memory/2136-68-0x00007FFD01090000-0x00007FFD01285000-memory.dmp

Filesize
2.0MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads