diamondfox | f24b905fb50dd08805caa0d357b3c43149a5174c745797af98d0c4f111f85788

General

Target

f24b905fb50dd08805caa0d357b3c43149a5174c745797af98d0c4f111f85788.exe
Size

90KB
MD5

4dddf0bfbb7fff60a92926426a0754e4
SHA1

423f4f6b9c0805222b9577b52862af684030c002
SHA256

f24b905fb50dd08805caa0d357b3c43149a5174c745797af98d0c4f111f85788
SHA512

713fec6b0a8067dd39579ad9280442bf215efb95b628e9b2f3cdb61fb4bc796bfb2857810fe393757a25006ba7203878ce9c4763ed15db6d8a5785badbc21744

Score

10^/10

diamondfox botnet ransomware stealer

Malware Config

Signatures

DiamondFox
DiamondFox is a multipurpose botnet with many capabilities.
botnet stealer diamondfox

DiamondFox payload 5 IoCs

Detects DiamondFox payload in file/memory.

resource	yara_rule
behavioral1/files/0x0004000000012fe2-31.dat	diamondfox
behavioral1/files/0x0004000000012fe2-34.dat	diamondfox
behavioral1/files/0x0004000000012fe2-32.dat	diamondfox
behavioral1/files/0x0004000000012fe2-58.dat	diamondfox
behavioral1/files/0x0004000000012fe2-57.dat	diamondfox

Executes dropped EXE 1 IoCs

pid	Process
564	atiedxx.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\atiedxx.lnk	powershell.exe

Loads dropped DLL 3 IoCs

pid	Process
896	powershell.exe
896	powershell.exe
344	powershell.exe

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	atiedxx.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	atiedxx.exe

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	6	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
896	powershell.exe
896	powershell.exe
344	powershell.exe
344	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	896	powershell.exe
Token: SeDebugPrivilege	344	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
792	f24b905fb50dd08805caa0d357b3c43149a5174c745797af98d0c4f111f85788.exe
564	atiedxx.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 792 wrote to memory of 896	792	f24b905fb50dd08805caa0d357b3c43149a5174c745797af98d0c4f111f85788.exe	29
PID 792 wrote to memory of 896	792	f24b905fb50dd08805caa0d357b3c43149a5174c745797af98d0c4f111f85788.exe	29
PID 792 wrote to memory of 896	792	f24b905fb50dd08805caa0d357b3c43149a5174c745797af98d0c4f111f85788.exe	29
PID 792 wrote to memory of 896	792	f24b905fb50dd08805caa0d357b3c43149a5174c745797af98d0c4f111f85788.exe	29
PID 896 wrote to memory of 564	896	powershell.exe	31
PID 896 wrote to memory of 564	896	powershell.exe	31
PID 896 wrote to memory of 564	896	powershell.exe	31
PID 896 wrote to memory of 564	896	powershell.exe	31
PID 564 wrote to memory of 344	564	atiedxx.exe	32
PID 564 wrote to memory of 344	564	atiedxx.exe	32
PID 564 wrote to memory of 344	564	atiedxx.exe	32
PID 564 wrote to memory of 344	564	atiedxx.exe	32

C:\Users\Admin\AppData\Local\Temp\f24b905fb50dd08805caa0d357b3c43149a5174c745797af98d0c4f111f85788.exe
"C:\Users\Admin\AppData\Local\Temp\f24b905fb50dd08805caa0d357b3c43149a5174c745797af98d0c4f111f85788.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:792
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell Copy-Item -Path 'C:\Users\Admin\AppData\Local\Temp\f24b905fb50dd08805caa0d357b3c43149a5174c745797af98d0c4f111f85788.exe' -Destination 'C:\Users\Admin\AppData\Local\xdaeitx\atiedxx.exe';Start-Sleep -s 60;Start-Process 'C:\Users\Admin\AppData\Local\xdaeitx\atiedxx.exe'
  2⤵
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:896
- - C:\Users\Admin\AppData\Local\xdaeitx\atiedxx.exe
    "C:\Users\Admin\AppData\Local\xdaeitx\atiedxx.exe"
    3⤵
    - Executes dropped EXE
    - Modifies system certificate store
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:564
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell $shell = New-Object -ComObject WScript.Shell;$shortcut = $shell.CreateShortcut('C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\atiedxx.lnk');$shortcut.TargetPath = 'C:\Users\Admin\AppData\Local\xdaeitx\atiedxx.exe';$shortcut.Save()
      4⤵
      Drops startup file
      Loads dropped DLL
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:344

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/344-45-0x0000000005210000-0x0000000005211000-memory.dmp

Filesize
4KB

Download
memory/344-44-0x0000000004822000-0x0000000004823000-memory.dmp

Filesize
4KB

Download
memory/344-56-0x0000000006180000-0x0000000006181000-memory.dmp

Filesize
4KB

Download
memory/344-46-0x0000000005380000-0x0000000005381000-memory.dmp

Filesize
4KB

Download
memory/344-40-0x0000000074290000-0x000000007497E000-memory.dmp

Filesize
6.9MB

Download
memory/344-41-0x0000000000DC0000-0x0000000000DC1000-memory.dmp

Filesize
4KB

Download
memory/344-42-0x0000000004860000-0x0000000004861000-memory.dmp

Filesize
4KB

Download
memory/344-43-0x0000000004820000-0x0000000004821000-memory.dmp

Filesize
4KB

Download
memory/896-20-0x00000000056B0000-0x00000000056B1000-memory.dmp

Filesize
4KB

Download
memory/896-10-0x0000000004852000-0x0000000004853000-memory.dmp

Filesize
4KB

Download
memory/896-21-0x0000000006120000-0x0000000006121000-memory.dmp

Filesize
4KB

Download
memory/896-15-0x0000000005620000-0x0000000005621000-memory.dmp

Filesize
4KB

Download
memory/896-12-0x0000000005240000-0x0000000005241000-memory.dmp

Filesize
4KB

Download
memory/896-11-0x0000000002600000-0x0000000002601000-memory.dmp

Filesize
4KB

Download
memory/896-28-0x0000000006200000-0x0000000006201000-memory.dmp

Filesize
4KB

Download
memory/896-9-0x0000000004850000-0x0000000004851000-memory.dmp

Filesize
4KB

Download
memory/896-8-0x0000000004890000-0x0000000004891000-memory.dmp

Filesize
4KB

Download
memory/896-7-0x0000000002330000-0x0000000002331000-memory.dmp

Filesize
4KB

Download
memory/896-6-0x0000000074260000-0x000000007494E000-memory.dmp

Filesize
6.9MB

Download
memory/896-30-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/896-29-0x00000000062D0000-0x00000000062D1000-memory.dmp

Filesize
4KB

Download
memory/896-5-0x00000000765E1000-0x00000000765E3000-memory.dmp

Filesize
8KB

Download

Analysis

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