Analysis
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max time kernel
133s -
max time network
159s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
14-05-2024 01:57
Static task
static1
Behavioral task
behavioral1
Sample
fbbb58d64ed3d52ebf0c4442588f4a19e48fd64023188fb750926b13c40df8a0.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
fbbb58d64ed3d52ebf0c4442588f4a19e48fd64023188fb750926b13c40df8a0.exe
Resource
win10v2004-20240426-en
General
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Target
fbbb58d64ed3d52ebf0c4442588f4a19e48fd64023188fb750926b13c40df8a0.exe
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Size
192KB
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MD5
9e8baf127b832943d4fae218ce90191a
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SHA1
449e6f1c2c79cb0ee4d43151bcaa6ecfd38efa70
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SHA256
fbbb58d64ed3d52ebf0c4442588f4a19e48fd64023188fb750926b13c40df8a0
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SHA512
9af9e3e30c34ecad41277c0bb8e27eabaf7fa05249153ffac20262af4ed3680a5a85cc5c192b04b3da3835396ef68e4e4a8b9123c663d8cf2f3a8681db7f8114
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SSDEEP
6144:b05H0JNb+gzTy9ZRTbPG9rYxf2hnbSayKTTfq+T/ur:A+uHG9rYxf2hnbSayKTTfq+T/ur
Malware Config
Signatures
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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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation fbbb58d64ed3d52ebf0c4442588f4a19e48fd64023188fb750926b13c40df8a0.exe -
Executes dropped EXE 2 IoCs
pid Process 3364 yar.exe 3928 yar.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yar = "C:\\Users\\Admin\\AppData\\Roaming\\yar.exe" fbbb58d64ed3d52ebf0c4442588f4a19e48fd64023188fb750926b13c40df8a0.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4892 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 828 fbbb58d64ed3d52ebf0c4442588f4a19e48fd64023188fb750926b13c40df8a0.exe Token: SeDebugPrivilege 828 fbbb58d64ed3d52ebf0c4442588f4a19e48fd64023188fb750926b13c40df8a0.exe Token: SeDebugPrivilege 3364 yar.exe Token: SeDebugPrivilege 3928 yar.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 828 wrote to memory of 4892 828 fbbb58d64ed3d52ebf0c4442588f4a19e48fd64023188fb750926b13c40df8a0.exe 86 PID 828 wrote to memory of 4892 828 fbbb58d64ed3d52ebf0c4442588f4a19e48fd64023188fb750926b13c40df8a0.exe 86 -
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\fbbb58d64ed3d52ebf0c4442588f4a19e48fd64023188fb750926b13c40df8a0.exe"C:\Users\Admin\AppData\Local\Temp\fbbb58d64ed3d52ebf0c4442588f4a19e48fd64023188fb750926b13c40df8a0.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:828 -
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "yar" /tr "C:\Users\Admin\AppData\Roaming\yar.exe"2⤵
- Creates scheduled task(s)
PID:4892
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C:\Users\Admin\AppData\Roaming\yar.exeC:\Users\Admin\AppData\Roaming\yar.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3364
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C:\Users\Admin\AppData\Roaming\yar.exeC:\Users\Admin\AppData\Roaming\yar.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3928
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
654B
MD52ff39f6c7249774be85fd60a8f9a245e
SHA1684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA5121d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
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Filesize
192KB
MD59e8baf127b832943d4fae218ce90191a
SHA1449e6f1c2c79cb0ee4d43151bcaa6ecfd38efa70
SHA256fbbb58d64ed3d52ebf0c4442588f4a19e48fd64023188fb750926b13c40df8a0
SHA5129af9e3e30c34ecad41277c0bb8e27eabaf7fa05249153ffac20262af4ed3680a5a85cc5c192b04b3da3835396ef68e4e4a8b9123c663d8cf2f3a8681db7f8114