Analysis
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max time kernel
92s -
max time network
128s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
31-05-2024 14:03
Behavioral task
behavioral1
Sample
NursultanLoader.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral2
Sample
NursultanLoader.exe
Resource
win11-20240426-en
General
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Target
NursultanLoader.exe
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Size
63KB
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MD5
3adee1c8284ffa4c948bd53cb4ed8b9e
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SHA1
15488f0a91896a322ffdc829d9fe2bcb3cfeb319
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SHA256
61a1e82d71d8b95443c04c37b486b3b56dc9c2931eb10aceb77df00f863be28c
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SHA512
d9fbe3637219b9b5c53555dbeab64e1c1288acaa4eba727e3e133abf03967b5ea059ae41107ba9960ddd3d629cfca795239baee66b52166ed391d5c81a23924b
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SSDEEP
1536:N1loX++ZE4J/A/oPXh06NNi+bDvMm4oM6XsVO8Ltxxa:yO+H/BPXh00Q+bDvMHo5sVO8Ls
Malware Config
Extracted
xworm
loss-winners.gl.at.ply.gg:1567
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Install_directory
%AppData%
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install_file
Expensive 3.1.exe
Signatures
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Detect Xworm Payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/3840-1-0x0000000000210000-0x0000000000226000-memory.dmp family_xworm -
Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepid process 3056 powershell.exe 4348 powershell.exe 3336 powershell.exe 2320 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
NursultanLoader.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation NursultanLoader.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
NursultanLoader.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Expensive 3.1 = "C:\\Users\\Admin\\AppData\\Roaming\\Expensive 3.1.exe" NursultanLoader.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 9 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exeNursultanLoader.exepid process 3056 powershell.exe 3056 powershell.exe 4348 powershell.exe 4348 powershell.exe 3336 powershell.exe 3336 powershell.exe 2320 powershell.exe 2320 powershell.exe 3840 NursultanLoader.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
NursultanLoader.exepowershell.exepowershell.exepowershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 3840 NursultanLoader.exe Token: SeDebugPrivilege 3056 powershell.exe Token: SeDebugPrivilege 4348 powershell.exe Token: SeDebugPrivilege 3336 powershell.exe Token: SeDebugPrivilege 2320 powershell.exe Token: SeDebugPrivilege 3840 NursultanLoader.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
NursultanLoader.exepid process 3840 NursultanLoader.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
NursultanLoader.exedescription pid process target process PID 3840 wrote to memory of 3056 3840 NursultanLoader.exe powershell.exe PID 3840 wrote to memory of 3056 3840 NursultanLoader.exe powershell.exe PID 3840 wrote to memory of 4348 3840 NursultanLoader.exe powershell.exe PID 3840 wrote to memory of 4348 3840 NursultanLoader.exe powershell.exe PID 3840 wrote to memory of 3336 3840 NursultanLoader.exe powershell.exe PID 3840 wrote to memory of 3336 3840 NursultanLoader.exe powershell.exe PID 3840 wrote to memory of 2320 3840 NursultanLoader.exe powershell.exe PID 3840 wrote to memory of 2320 3840 NursultanLoader.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\NursultanLoader.exe"C:\Users\Admin\AppData\Local\Temp\NursultanLoader.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3840 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\NursultanLoader.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3056
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'NursultanLoader.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4348
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Expensive 3.1.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3336
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Expensive 3.1.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2320
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD5d28a889fd956d5cb3accfbaf1143eb6f
SHA1157ba54b365341f8ff06707d996b3635da8446f7
SHA25621e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA5120b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c
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Filesize
944B
MD5d8cb3e9459807e35f02130fad3f9860d
SHA15af7f32cb8a30e850892b15e9164030a041f4bd6
SHA2562b139c74072ccbdaa17b950f32a6dbc934dfb7af9973d97c9b0d9c498012ba68
SHA512045239ba31367fbdd59e883f74eafc05724e23bd6e8f0c1e7171ea2496a497eb9e0cfcb57285bb81c4d569daadba43d6ef64c626ca48f1e2a59e8d97f0cc9184
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Filesize
944B
MD5a7cc007980e419d553568a106210549a
SHA1c03099706b75071f36c3962fcc60a22f197711e0
SHA256a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165
SHA512b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82