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Analysis
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max time kernel
220s -
max time network
239s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
29/01/2023, 19:26
Static task
static1
Behavioral task
behavioral1
Sample
3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe
Resource
win10v2004-20221111-en
General
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Target
3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe
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Size
77KB
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MD5
0badb1a758031e5ee6aca7e01e551005
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SHA1
3b2094e19a8958d16ddd1914c51b55cc1ef46de7
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SHA256
3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41
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SHA512
a75b7fb8a78704796ad8af2df84a8f9e61fc14255621fe3ac9d4a7364a966362b7a19086eb3502dedb62969bf188475c181e7e99226d34e87f1cceb40e756077
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SSDEEP
1536:4FiOpOK7McctSDnAeVB919Z97CXrRkvXE+QQ4k6P8t5W:eZX/eKnLrZXvXE+QQ4k6P8t5W
Malware Config
Extracted
limerat
1PwPgp5XGS4VapRjQM1XijgAs2psFeZVGM
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aes_key
#C^7M3ha6&%678n3VRZet)-D*;zH8Hxa
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antivm
false
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c2_url
https://pastebin.com/raw/6mZktVr5
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delay
35
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download_payload
false
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install
false
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install_name
Windows Update Assistant.exe
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main_folder
UserProfile
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pin_spread
false
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sub_folder
\Microsoft\
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usb_spread
true
Signatures
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Executes dropped EXE 1 IoCs
pid Process 3772 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe -
Looks for VMWare Tools registry key 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\Vmware Tools 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1" 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Real-Time Protection 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Windows Services = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Update Folder\\Windows Update.exe" 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2472 set thread context of 3772 2472 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe 79 -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3772 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe Token: SeDebugPrivilege 3772 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2472 wrote to memory of 3772 2472 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe 79 PID 2472 wrote to memory of 3772 2472 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe 79 PID 2472 wrote to memory of 3772 2472 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe 79 PID 2472 wrote to memory of 3772 2472 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe 79 PID 2472 wrote to memory of 3772 2472 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe 79 PID 2472 wrote to memory of 3772 2472 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe 79 PID 2472 wrote to memory of 3772 2472 3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe"C:\Users\Admin\AppData\Local\Temp\3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe"1⤵
- Looks for VMWare Tools registry key
- Windows security modification
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2472 -
C:\Users\Admin\AppData\Local\Temp\3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe"{path}"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3772
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\3fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41.exe
Filesize77KB
MD50badb1a758031e5ee6aca7e01e551005
SHA13b2094e19a8958d16ddd1914c51b55cc1ef46de7
SHA2563fcc4f194e7bc1b894cacb0c09642b9827c9f11ab43180ffcc36ce5c8401bf41
SHA512a75b7fb8a78704796ad8af2df84a8f9e61fc14255621fe3ac9d4a7364a966362b7a19086eb3502dedb62969bf188475c181e7e99226d34e87f1cceb40e756077