Analysis
- max time kernel
164s - max time network
172s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
30/10/2022, 10:16
General
- Target 051a8439814976290735c9b8159ff602.exe
- Size 29KB
- Sample221030-massvaegg7
- SHA256 1ac44eda1cc529647ffc10722a39e11da7c0cc9cff19b773a3af07f4baf7d664
Malware Config
Extracted
-
limerat
-
bc1q233hm2e03j09e5zy52zqzt0sh7temfq9h4t3cl
-
aes_key
T3rr1f13r
-
antivm
false
-
c2_url
https://pastebin.com/raw/BhUB9EXY
-
delay
3
-
download_payload
false
-
install
true
-
install_name
scvhost.exe
-
main_folder
UserProfile
-
pin_spread
false
-
sub_folder
\scvhostLog\
-
usb_spread
false
Signatures
- LimeRAT
Simple yet powerful RAT for Windows machines written in .NET.
- Executes dropped EXE 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\051a8439814976290735c9b8159ff602.exe"C:\Users\Admin\AppData\Local\Temp\051a8439814976290735c9b8159ff602.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\scvhostLog\scvhost.exe'"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\scvhostLog\scvhost.exe"C:\Users\Admin\scvhostLog\scvhost.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
scvhost.exe
scvhost.exe
memory/220-140-0x0000000006290000-0x0000000006322000-memory.dmp
memory/376-132-0x0000000000C80000-0x0000000000C8C000-memory.dmp
memory/376-133-0x0000000005510000-0x00000000055AC000-memory.dmp
memory/376-134-0x00000000055B0000-0x0000000005616000-memory.dmp
memory/376-135-0x0000000006190000-0x0000000006734000-memory.dmp