Analysis
-
max time kernel
63s -
max time network
16s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
12-03-2021 07:40
Behavioral task
behavioral1
Sample
3be446dc01245ef559d5407ca04f45232a54a4f3ff46b3d334940b7213455c2a.xlsm
Resource
win7v20201028
Behavioral task
behavioral2
Sample
3be446dc01245ef559d5407ca04f45232a54a4f3ff46b3d334940b7213455c2a.xlsm
Resource
win10v20201028
General
-
Target
3be446dc01245ef559d5407ca04f45232a54a4f3ff46b3d334940b7213455c2a.xlsm
-
Size
24KB
-
MD5
65c035cbf062176bb796cccab12cb71f
-
SHA1
7850f7302be1794ad1afa5b75c3737de629a423d
-
SHA256
3be446dc01245ef559d5407ca04f45232a54a4f3ff46b3d334940b7213455c2a
-
SHA512
1ce80a1c59922f7cd4fc759147f35e32cd33e1eb7f5532b1eae464b9b041ea48ebcbf47b501cc680708b4398e86d4dbb878dac24fd0bb2409bb1061f07fa3109
Malware Config
Extracted
https://fernandogaleano.com/server.php
https://tcommerceshop.com/server.php
Signatures
-
Process spawned unexpected child process 2 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
reg.exerundll32.exedescription pid pid_target process target process Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1648 1724 reg.exe EXCEL.EXE Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 348 1724 rundll32.exe EXCEL.EXE -
Deletes itself 1 IoCs
Processes:
EXCEL.EXEpid process 1724 EXCEL.EXE -
Enumerates system info in registry 2 TTPs 1 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE -
Processes:
EXCEL.EXEdescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1724 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 16 IoCs
Processes:
EXCEL.EXEpid process 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1724 wrote to memory of 1648 1724 EXCEL.EXE reg.exe PID 1724 wrote to memory of 1648 1724 EXCEL.EXE reg.exe PID 1724 wrote to memory of 1648 1724 EXCEL.EXE reg.exe PID 1724 wrote to memory of 1648 1724 EXCEL.EXE reg.exe PID 1724 wrote to memory of 348 1724 EXCEL.EXE rundll32.exe PID 1724 wrote to memory of 348 1724 EXCEL.EXE rundll32.exe PID 1724 wrote to memory of 348 1724 EXCEL.EXE rundll32.exe PID 1724 wrote to memory of 348 1724 EXCEL.EXE rundll32.exe PID 1724 wrote to memory of 348 1724 EXCEL.EXE rundll32.exe PID 1724 wrote to memory of 348 1724 EXCEL.EXE rundll32.exe PID 1724 wrote to memory of 348 1724 EXCEL.EXE rundll32.exe
Processes
-
C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\3be446dc01245ef559d5407ca04f45232a54a4f3ff46b3d334940b7213455c2a.xlsm1⤵
- Deletes itself
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\reg.exe"C:\Windows\system32\reg.exe" EXPORT HKCU\Software\Microsoft\Office\14.0\Excel\Security C:\Users\Public\Documents\KtiB1.txt /y2⤵
- Process spawned unexpected child process
-
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\fST7Is.txt,DllRegisterServer2⤵
- Process spawned unexpected child process
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Public\Documents\KtiB1.txtMD5
1084b35cb1aecef496dfdb263760a40c
SHA143d95f062749f3143838fe39460b3c5d541e194a
SHA25648ccd7a8ed9873ff73eec7252ed9ce2882389aa43a5ec5ad072168c43320b25c
SHA5129dbcfe0f39e04700f252b95cfb73a7977fe7a2ffe8de98510c9f62988300754c4e8eeb0a152ad87db71b28ee8c2fcb97d136215d2898ccbee5b8837a31eb7212
-
memory/268-8-0x000007FEF7D90000-0x000007FEF800A000-memory.dmpFilesize
2.5MB
-
memory/348-9-0x0000000000000000-mapping.dmp
-
memory/348-10-0x00000000761E1000-0x00000000761E3000-memory.dmpFilesize
8KB
-
memory/1648-6-0x0000000000000000-mapping.dmp
-
memory/1724-2-0x000000002F5D1000-0x000000002F5D4000-memory.dmpFilesize
12KB
-
memory/1724-3-0x0000000071C61000-0x0000000071C63000-memory.dmpFilesize
8KB
-
memory/1724-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
-
memory/1724-5-0x0000000002050000-0x0000000002051000-memory.dmpFilesize
4KB