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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
16/11/2024, 11:30
Static task
static1
Behavioral task
behavioral1
Sample
b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe
Resource
win7-20240903-en
General
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Target
b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe
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Size
1.3MB
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MD5
5e8c689ae7f342a2b2dcf76ad9f990d4
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SHA1
dc659d8c8284c0ec2d5cd4b0c4dd3a250d481331
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SHA256
b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be
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SHA512
46bd683b51c45cc92d5b35c236d8e339ab808cd87465eebd7f1a96ccdb28f994e0048a185a46a68dfd106e6fdd6e46a75c85caea180c03ac20ca2e3e778e64c9
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SSDEEP
12288:0kjmrocDPyNhuTsAGBDNMrRbeyBYidXG4LrXFb2N:0ZbPyNqsAwyFCreDJKN
Malware Config
Extracted
xworm
3.1
savelat19847.duckdns.org:7000
6FO7gyeQQmt4IGRZ
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install_file
USB.exe
Signatures
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Detect Xworm Payload 1 IoCs
resource yara_rule behavioral2/memory/1836-4-0x0000000000400000-0x000000000040E000-memory.dmp family_xworm -
Xworm family
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Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 3844 powershell.exe 652 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation regasm.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2032 set thread context of 1836 2032 b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe 84 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regasm.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3844 powershell.exe 3844 powershell.exe 652 powershell.exe 652 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1836 regasm.exe Token: SeDebugPrivilege 3844 powershell.exe Token: SeDebugPrivilege 652 powershell.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 2032 wrote to memory of 1836 2032 b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe 84 PID 2032 wrote to memory of 1836 2032 b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe 84 PID 2032 wrote to memory of 1836 2032 b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe 84 PID 2032 wrote to memory of 1836 2032 b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe 84 PID 2032 wrote to memory of 1836 2032 b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe 84 PID 2032 wrote to memory of 1836 2032 b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe 84 PID 2032 wrote to memory of 1836 2032 b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe 84 PID 2032 wrote to memory of 1836 2032 b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe 84 PID 1836 wrote to memory of 3844 1836 regasm.exe 96 PID 1836 wrote to memory of 3844 1836 regasm.exe 96 PID 1836 wrote to memory of 3844 1836 regasm.exe 96 PID 1836 wrote to memory of 652 1836 regasm.exe 100 PID 1836 wrote to memory of 652 1836 regasm.exe 100 PID 1836 wrote to memory of 652 1836 regasm.exe 100
Processes
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C:\Users\Admin\AppData\Local\Temp\b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe"C:\Users\Admin\AppData\Local\Temp\b2e9b488e12360fc455512ddae99dba10dd455df423853875e89ac1ffbdd06be.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2032 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"2⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1836 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3844
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'regasm.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:652
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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Filesize
18KB
MD53d928378132a84f574cfd9eec9a46c71
SHA1e13f8823a41a2adfc3466880242bbc1c811f0521
SHA256a54631662ae8ad22592e70af8910ac1ff8cccec30b5f6bb39b0306a29be0714e
SHA5124303d2b09b22878f340889790698c0fa0914a126df25649ba3047fc42c419c59d604b372a3367adb077f5be8e1e2fabbfffafabb7c5b58b1a8e77a203628b504
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82