Analysis
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max time kernel
150s -
max time network
152s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
27-07-2021 15:03
Static task
static1
Behavioral task
behavioral1
Sample
fda.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
fda.exe
Resource
win10v20210408
General
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Target
fda.exe
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Size
909KB
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MD5
9988685bdb69c34939c270df2eff6d47
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SHA1
b4aa67fe963f14a8ac6220d8953960a86d7bcdd1
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SHA256
f367ab08d8884ebda2ca7101fa509d1216f66c9e788d1b729ce605959f2f57ca
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SHA512
c535fec6cffebc266858e46d6ef8b6405a2ac9e50d946d40faf64131eb866611d32b1d9906c70923f075d00e2e88c74afb284d198277c4ef0abaaa24ff9ded7b
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.vivaldi.net - Port:
587 - Username:
faithkingsley@vivaldi.net - Password:
kingsofkings123
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/1472-68-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/1472-69-0x000000000043782E-mapping.dmp family_agenttesla behavioral1/memory/1472-70-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla -
Drops file in Drivers directory 1 IoCs
Processes:
RegSvcs.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegSvcs.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\DLxES = "C:\\Users\\Admin\\AppData\\Roaming\\DLxES\\DLxES.exe" RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
fda.exedescription pid process target process PID 784 set thread context of 1472 784 fda.exe RegSvcs.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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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.
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
fda.exeRegSvcs.exepid process 784 fda.exe 784 fda.exe 1472 RegSvcs.exe 1472 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
fda.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 784 fda.exe Token: SeDebugPrivilege 1472 RegSvcs.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
RegSvcs.exepid process 1472 RegSvcs.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
fda.exedescription pid process target process PID 784 wrote to memory of 564 784 fda.exe schtasks.exe PID 784 wrote to memory of 564 784 fda.exe schtasks.exe PID 784 wrote to memory of 564 784 fda.exe schtasks.exe PID 784 wrote to memory of 564 784 fda.exe schtasks.exe PID 784 wrote to memory of 976 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 976 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 976 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 976 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 976 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 976 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 976 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 1472 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 1472 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 1472 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 1472 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 1472 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 1472 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 1472 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 1472 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 1472 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 1472 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 1472 784 fda.exe RegSvcs.exe PID 784 wrote to memory of 1472 784 fda.exe RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\fda.exe"C:\Users\Admin\AppData\Local\Temp\fda.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XwsFwyhNyFwyE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE24.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpE24.tmpMD5
c4215e4e7a05809def3c18da6604f395
SHA1575071deecbdeea803f31a5663d32ed434fe182e
SHA256f3dc81b24c498e852984182b85da85d2feee07ff03818fe04e673343891bc9ff
SHA512941d0080b859c48adcbf444ee2e9e4cc202fc01a7d2ca1ed986c5a1c412c4974e9fd76b949d5621be2cede8b3e907ff80c6d5c3748c3b0ea8f6d58393b0a104b
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memory/564-66-0x0000000000000000-mapping.dmp
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memory/784-60-0x00000000000A0000-0x00000000000A1000-memory.dmpFilesize
4KB
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memory/784-62-0x0000000004A70000-0x0000000004A71000-memory.dmpFilesize
4KB
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memory/784-63-0x00000000004E0000-0x00000000004E2000-memory.dmpFilesize
8KB
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memory/784-64-0x00000000052D0000-0x0000000005386000-memory.dmpFilesize
728KB
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memory/784-65-0x00000000058D0000-0x0000000005942000-memory.dmpFilesize
456KB
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memory/1472-68-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1472-69-0x000000000043782E-mapping.dmp
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memory/1472-70-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1472-72-0x0000000004860000-0x0000000004861000-memory.dmpFilesize
4KB
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memory/1472-73-0x0000000004861000-0x0000000004862000-memory.dmpFilesize
4KB