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
148s
max time network
149s
platform
windows10-1703_x64
resource
win10-20231215-en
resource tags

arch:x64arch:x86image:win10-20231215-enlocale:en-usos:windows10-1703-x64system
submitted
29/01/2024, 01:55

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General

Target

excel40macroschallenge.rar
Size

103KB
MD5

542ead021ed9ecab2f5b6ff0edaf2f74
SHA1

f1a509cb6dc15534a0b7ee29486789557a434941
SHA256

024ef55d8112d913021e2f8e38294052c40d177062afebc1b462f396c86c297b
SHA512

d2e1514a891db86ec6275ffcb6f44503cedf9e4560d200eeefc3fe047e08c7769de1892b92ee71fe4663720652eb509a55c29e24e82d6deb8dbe5a741cd9cb95
SSDEEP

1536:r6diRoyzKi0WAx5elOHwxvhuQcLE6/Q59VGqITfVuy03FD+/mUtzBxr:xutnmOQxvqEPHVZILVK1D+eUtX

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	3004	3744	regsvr32.exe	76
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2176	3744	regsvr32.exe	76

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\Local Settings	cmd.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance	7zFM.exe
Key created	\REGISTRY\USER\S-1-5-21-1968775928-2924269989-3510977013-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance	7zFM.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3744	EXCEL.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3900	7zFM.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	3900	7zFM.exe
Token: 35	3900	7zFM.exe
Token: SeSecurityPrivilege	3900	7zFM.exe

Suspicious use of FindShellTrayWindow 5 IoCs

pid	Process
3900	7zFM.exe
3900	7zFM.exe
3900	7zFM.exe
3744	EXCEL.EXE
3744	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
3744	EXCEL.EXE
3744	EXCEL.EXE
3744	EXCEL.EXE
3744	EXCEL.EXE
3744	EXCEL.EXE
3744	EXCEL.EXE
3744	EXCEL.EXE
3744	EXCEL.EXE
3744	EXCEL.EXE
3744	EXCEL.EXE
3744	EXCEL.EXE
3744	EXCEL.EXE
3744	EXCEL.EXE
3744	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 212 wrote to memory of 3900	212	cmd.exe	73
PID 212 wrote to memory of 3900	212	cmd.exe	73
PID 3744 wrote to memory of 3004	3744	EXCEL.EXE	80
PID 3744 wrote to memory of 3004	3744	EXCEL.EXE	80
PID 3744 wrote to memory of 2176	3744	EXCEL.EXE	81
PID 3744 wrote to memory of 2176	3744	EXCEL.EXE	81

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\excel40macroschallenge.rar
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:212
- C:\Program Files\7-Zip\7zFM.exe
  "C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\excel40macroschallenge.rar"
  2⤵
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:3900

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\Desktop\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:3744
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32 -s ..\iroto.dll
  2⤵
  - Process spawned unexpected child process
  PID:3004
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32 -s ..\iroto1.dll
  2⤵
  - Process spawned unexpected child process
  PID:2176

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\AppData\Roaming\Microsoft\Office\Recent\index.dat

Filesize
275B

MD5
4926738d61b95ed85f82b1163c66f5c5

SHA1
2199d0a1a08ad5b4e05749bd152bc600a192c0e1

SHA256
2a1df9acdef48812611932a0780bc2d8658f0ac6652df9cbe835eec47922aa33

SHA512
352f2f3c72ab2fc2da4e77306726da7a27cf123158ed4832cee05cd9f2c5e8c646a4b742e1295bf592ec9286bae3e13fc077fe6836f243c4f7a322611b20f7ee

Download Submit
C:\Users\Admin\Desktop\research-1646684671.xls

Filesize
648KB

MD5
927005139a0be61efe849c715d875dd2

SHA1
0f6a91916941d85b69e5320873a5d1c45055bc4e

SHA256
b23491ede17f9a5b7d6ad27d3051a2224c214a5afa2139e5147bd26319577f85

SHA512
30f40d913815f43395186b0957413e9f3f8999af97b3192372a4da86c6b5b32e3abd8adadb9623417521b57cff4e323d85d72e0e31c6be901b0926a0350c9b3e

Download Submit
C:\Users\Admin\iroto.dll

Filesize
1KB

MD5
f2eda6999563e6eeae51b31bfcbce6fd

SHA1
5182ef0d59af25d3ee12376991207a04e168653c

SHA256
113e7da3abfdb830cd255ad55e161d0c8a4538e01d60484fc596594c5fbeeded

SHA512
a6f425e6cdfa09499a8db3cdfabe7adb2d466a2c97e45258ff5b4ac58d8919d518cca0315faf90bd5be12a2a690a7b446725d3541aac88a7a3c09af2f4d7c335

Download Submit
memory/3744-25-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-31-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-11-0x00007FFFB06D0000-0x00007FFFB06E0000-memory.dmp

Filesize
64KB

Download
memory/3744-12-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-14-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-16-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-17-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-18-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-20-0x00007FFFACED0000-0x00007FFFACEE0000-memory.dmp

Filesize
64KB

Download
memory/3744-21-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-22-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-23-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-24-0x00007FFFEDEE0000-0x00007FFFEDF8E000-memory.dmp

Filesize
696KB

Download
memory/3744-6-0x00007FFFB06D0000-0x00007FFFB06E0000-memory.dmp

Filesize
64KB

Download
memory/3744-9-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-19-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-26-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-28-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-29-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-27-0x00007FFFACED0000-0x00007FFFACEE0000-memory.dmp

Filesize
64KB

Download
memory/3744-30-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-32-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-10-0x00007FFFB06D0000-0x00007FFFB06E0000-memory.dmp

Filesize
64KB

Download
memory/3744-7-0x00007FFFB06D0000-0x00007FFFB06E0000-memory.dmp

Filesize
64KB

Download
memory/3744-8-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-226-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-227-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download
memory/3744-228-0x00007FFFEDEE0000-0x00007FFFEDF8E000-memory.dmp

Filesize
696KB

Download
memory/3744-229-0x00007FFFF0640000-0x00007FFFF081B000-memory.dmp

Filesize
1.9MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads