024ef55d8112d913021e2f8e38294052c40d177062afebc1b462f396c86c297b

Resubmissions

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
210s
max time network
211s
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, 02:55

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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	3188	3940	regsvr32.exe	14
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3208	3940	regsvr32.exe	14

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 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

pid	Process
3940	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3940	EXCEL.EXE
3940	EXCEL.EXE

Suspicious use of SetWindowsHookEx 13 IoCs

pid	Process
3940	EXCEL.EXE
3940	EXCEL.EXE
3940	EXCEL.EXE
3940	EXCEL.EXE
3940	EXCEL.EXE
3940	EXCEL.EXE
3940	EXCEL.EXE
3940	EXCEL.EXE
3940	EXCEL.EXE
3940	EXCEL.EXE
3940	EXCEL.EXE
3940	EXCEL.EXE
3940	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3940 wrote to memory of 3188	3940	EXCEL.EXE	76
PID 3940 wrote to memory of 3188	3940	EXCEL.EXE	76
PID 3940 wrote to memory of 3208	3940	EXCEL.EXE	77
PID 3940 wrote to memory of 3208	3940	EXCEL.EXE	77

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:3940
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32 -s ..\iroto.dll
  2⤵
  - Process spawned unexpected child process
  PID:3188
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32 -s ..\iroto1.dll
  2⤵
  - Process spawned unexpected child process
  PID:3208

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
456c1c0105e6a3ce4ce9f4cbec06e421

SHA1
ec6989dcb1084de9c72c1d9085c8697a80c3c29e

SHA256
b27c9eacb22911ed6877984318544a83b8bd4a7640c4b2d9bc26d7b3fd1e379d

SHA512
b5403a51e4c291ae2ff064a00a83f3cc4cc48bbf4217ba8bbe567cfdcb5dd94ff4721261eb37c67872030143ab3e4e0c6667f11df9f9390078b2d81237636186

Download Submit
memory/3940-22-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-8-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-3-0x00007FFF307B0000-0x00007FFF307C0000-memory.dmp

Filesize
64KB

Download
memory/3940-2-0x00007FFF307B0000-0x00007FFF307C0000-memory.dmp

Filesize
64KB

Download
memory/3940-6-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-9-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-12-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-16-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-19-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-20-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-18-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-0-0x00007FFF307B0000-0x00007FFF307C0000-memory.dmp

Filesize
64KB

Download
memory/3940-4-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-17-0x00007FFF2E300000-0x00007FFF2E310000-memory.dmp

Filesize
64KB

Download
memory/3940-23-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-15-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-14-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-13-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-11-0x00007FFF2E300000-0x00007FFF2E310000-memory.dmp

Filesize
64KB

Download
memory/3940-10-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-7-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-21-0x00007FFF70730000-0x00007FFF70925000-memory.dmp

Filesize
2.0MB

Download
memory/3940-5-0x00007FFF307B0000-0x00007FFF307C0000-memory.dmp

Filesize
64KB

Download
memory/3940-1-0x00007FFF307B0000-0x00007FFF307C0000-memory.dmp

Filesize
64KB

Download
memory/3940-47-0x00007FFF70730000-0x00007FFF70925000-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