Analysis
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max time kernel
134s -
max time network
140s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
31/10/2024, 04:53
Behavioral task
behavioral1
Sample
c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe
Resource
win10v2004-20241007-en
General
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Target
c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe
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Size
135KB
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MD5
8ef01880cfdebf7288a039d279640ba2
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SHA1
f5960008e1fd9503937a4a8302989349d179d5f2
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SHA256
c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a
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SHA512
a94582df361a7948ed7c227c44aabd69942e68277bdf038e74a6075b0f2f0dcdfa8834da75a7ce687c1c7dc70f02f011f844a57bf4049d26a685403c0d69b374
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SSDEEP
1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOU:YfU/WF6QMauSuiWNi9eNOl0007NZIOU
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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe -
Executes dropped EXE 1 IoCs
pid Process 2028 wuauclt.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run" c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe -
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
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resource yara_rule behavioral2/memory/1240-0-0x0000000000E40000-0x0000000000E68000-memory.dmp upx behavioral2/files/0x0008000000023c6e-3.dat upx behavioral2/memory/2028-4-0x0000000000990000-0x00000000009B8000-memory.dmp upx behavioral2/memory/1240-6-0x0000000000E40000-0x0000000000E68000-memory.dmp upx behavioral2/memory/2028-7-0x0000000000990000-0x00000000009B8000-memory.dmp upx behavioral2/memory/1240-8-0x0000000000E40000-0x0000000000E68000-memory.dmp upx -
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 c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language wuauclt.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1240 wrote to memory of 2028 1240 c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe 84 PID 1240 wrote to memory of 2028 1240 c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe 84 PID 1240 wrote to memory of 2028 1240 c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe 84 PID 1240 wrote to memory of 3440 1240 c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe 101 PID 1240 wrote to memory of 3440 1240 c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe 101 PID 1240 wrote to memory of 3440 1240 c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe"C:\Users\Admin\AppData\Local\Temp\c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1240 -
C:\ProgramData\Update\wuauclt.exe"C:\ProgramData\Update\wuauclt.exe" /run2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2028
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C:\windows\SysWOW64\cmd.exe"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\c7558a103ce1f39442d0755e04450f76d17aefa2a4c1c7ca1c375fa873754f0a.exe" >> NUL2⤵
- System Location Discovery: System Language Discovery
PID:3440
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
135KB
MD5eace89df76bdc5bc490b62009552f42f
SHA165b8faac3c1f7db64114282759fcf6cb761ec60b
SHA2560d00408b8fa7258e55f47ac27be87358e59185527de8d79c68b884a71aaf52f4
SHA5129a9adabb590d43cbba6a7b89d0a95b2b8261991b69c131c1ce9d2b6dadc730bf47df9502b2b463fc388dce1aa7dc545541b75b28990959043ace045e44d7f096