Analysis
- max time kernel
147s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240412-en - resource tags
- submitted
17/04/2024, 04:42
General
- Target 0b685b0d52d434ab8311127daa63ae5597f7948d5a73016a1f8211587040b9a6.exe
- Size 48KB
- Sample240417-fbx1maea59
- SHA256 0b685b0d52d434ab8311127daa63ae5597f7948d5a73016a1f8211587040b9a6
Malware Config
Extracted
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asyncrat
-
0.5.8
-
Default
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94.228.162.82:6606
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94.228.162.82:7707
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94.228.162.82:8808
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YBc01FE5mcOd
-
delay
3
-
install
true
-
install_file
appBroker.exe
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install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Detect ZGRat V1 2 IoCs
- ZGRat
ZGRat is remote access trojan written in C#.
- Async RAT payload 1 IoCs
- Executes dropped EXE 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 19 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\0b685b0d52d434ab8311127daa63ae5597f7948d5a73016a1f8211587040b9a6.exe"C:\Users\Admin\AppData\Local\Temp\0b685b0d52d434ab8311127daa63ae5597f7948d5a73016a1f8211587040b9a6.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "appBroker" /tr '"C:\Users\Admin\AppData\Roaming\appBroker.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "appBroker" /tr '"C:\Users\Admin\AppData\Roaming\appBroker.exe"'3⤵
- Creates scheduled task(s)
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-
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp67D2.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\appBroker.exe"C:\Users\Admin\AppData\Roaming\appBroker.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
tmp67D2.tmp.bat
appBroker.exe
memory/628-18-0x0000000006B10000-0x0000000006BAC000-memory.dmp
memory/628-17-0x0000000006890000-0x0000000006906000-memory.dmp
memory/628-24-0x0000000005270000-0x0000000005280000-memory.dmp
memory/628-23-0x0000000006E10000-0x0000000006E72000-memory.dmp
memory/628-22-0x0000000074DD0000-0x0000000075581000-memory.dmp
memory/628-13-0x0000000074DD0000-0x0000000075581000-memory.dmp
memory/628-14-0x0000000005270000-0x0000000005280000-memory.dmp
memory/628-15-0x0000000005C20000-0x00000000061C6000-memory.dmp
memory/628-16-0x00000000056E0000-0x0000000005746000-memory.dmp
memory/628-21-0x0000000006880000-0x000000000688A000-memory.dmp
memory/628-20-0x0000000006BB0000-0x0000000006BF0000-memory.dmp
memory/628-19-0x0000000006850000-0x000000000686E000-memory.dmp
memory/4132-1-0x0000000074DE0000-0x0000000075591000-memory.dmp
memory/4132-3-0x0000000004D90000-0x0000000004E2C000-memory.dmp
memory/4132-0-0x0000000000220000-0x0000000000232000-memory.dmp
memory/4132-2-0x0000000004D80000-0x0000000004D90000-memory.dmp
memory/4132-8-0x0000000074DE0000-0x0000000075591000-memory.dmp