Analysis
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max time kernel
141s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240319-en -
resource tags
arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system -
submitted
07-04-2024 23:44
Behavioral task
behavioral1
Sample
99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe
Resource
win7-20240319-en
Behavioral task
behavioral2
Sample
99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe
Resource
win10v2004-20240226-en
General
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Target
99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe
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Size
26KB
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MD5
8222cc29fdeb85cc5e71e5d2ba2cdc0e
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SHA1
467737c290a4db43806df42bcbdf4e37586a2f11
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SHA256
99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af
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SHA512
5cbae650c63b1f8d10943a9925af881b8dbafd27305997a0450c21993c45c862ed84b934860955f938ea3bdeffc791470e391370d933b2bc071cf72e7d07bb71
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SSDEEP
768:XkX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIoT:6KcR4mjD9r82E
Malware Config
Signatures
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UPX dump on OEP (original entry point) 6 IoCs
Processes:
resource yara_rule behavioral1/memory/1600-0-0x0000000000E10000-0x0000000000E27000-memory.dmp UPX behavioral1/memory/1600-4-0x0000000000070000-0x0000000000087000-memory.dmp UPX C:\Windows\CTS.exe UPX behavioral1/memory/2920-13-0x0000000000FD0000-0x0000000000FE7000-memory.dmp UPX behavioral1/memory/1600-10-0x0000000000E10000-0x0000000000E27000-memory.dmp UPX C:\Users\Admin\AppData\Local\Temp\HDSIydjWGXne9Va.exe UPX -
Executes dropped EXE 1 IoCs
Processes:
CTS.exepid process 2920 CTS.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Processes:
resource yara_rule behavioral1/memory/1600-0-0x0000000000E10000-0x0000000000E27000-memory.dmp upx behavioral1/memory/1600-4-0x0000000000070000-0x0000000000087000-memory.dmp upx C:\Windows\CTS.exe upx behavioral1/memory/2920-13-0x0000000000FD0000-0x0000000000FE7000-memory.dmp upx behavioral1/memory/1600-10-0x0000000000E10000-0x0000000000E27000-memory.dmp upx C:\Users\Admin\AppData\Local\Temp\HDSIydjWGXne9Va.exe upx -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exeCTS.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" 99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" CTS.exe -
Drops file in Windows directory 2 IoCs
Processes:
99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exeCTS.exedescription ioc process File created C:\Windows\CTS.exe 99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exeCTS.exedescription pid process Token: SeDebugPrivilege 1600 99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe Token: SeDebugPrivilege 2920 CTS.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exedescription pid process target process PID 1600 wrote to memory of 2920 1600 99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe CTS.exe PID 1600 wrote to memory of 2920 1600 99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe CTS.exe PID 1600 wrote to memory of 2920 1600 99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe CTS.exe PID 1600 wrote to memory of 2920 1600 99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe CTS.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe"C:\Users\Admin\AppData\Local\Temp\99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1600 -
C:\Windows\CTS.exe"C:\Windows\CTS.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:2920
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
26KB
MD581d787bcda4e33d069708211f44336ea
SHA1165797c65a15336d4062a7c4b4a22366f4f9f872
SHA256ff31cdb7c3577dba99ac67d10903687dfa2f9580539d4269c4e149db04b07dbd
SHA512e4c1514cbd46d0de2dd08e42fe7f5f2b1b0b55724f15d898debf0050476b98de3cf98b094cb210ae6b2f776faea540902501a6500f653124a6e7d8ed75792d4d
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Filesize
26KB
MD5286211b8e0aad0533c45d8b8c351cc70
SHA1cb54a305a566c00742fb972c4ee62266e880ea78
SHA2561955407b2fd523e375303d560b987216b95105b421a8471218c0b65ceba847f3
SHA51291eddd484a40aee3a7a9254fd6843b3d9dd455e6a2c4d685d499ab1704d8644a6dc604ad14449e96b0754ae3e6c1c14c16d068605aa4e39840e0421aa7a4be35