Analysis
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max time kernel
130s -
max time network
111s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
16-04-2021 11:44
Static task
static1
Behavioral task
behavioral1
Sample
Thalesnano.exe
Resource
win7v20210408
General
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Target
Thalesnano.exe
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Size
514KB
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MD5
1ea4ac3f4abd23addae2f9288ff85dae
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SHA1
309d52a22394e5909cfba8672f5e51bacab3dddc
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SHA256
f3e4ddd5ea3076ca9b58c75b6fdc3e8f2379ee8f57614dda817f86bfaf9bdebf
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SHA512
a6b1d577db41b7109a5566ebd8a0e3d8c8ade484c7e42d7c471a66050101b14fc8fc5a947ba1731481960fb74f0c6157a39080377e7da2f31ec69f7946d3fdb2
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.yueqnugroup.com - Port:
587 - Username:
youngboss@yueqnugroup.com - Password:
YOVxieJ1
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/2104-128-0x000000000043762E-mapping.dmp family_agenttesla behavioral2/memory/2104-131-0x0000000000780000-0x00000000007BC000-memory.dmp family_agenttesla -
Executes dropped EXE 1 IoCs
Processes:
InstallUtil.exepid process 2104 InstallUtil.exe -
Obfuscated with Agile.Net obfuscator 2 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
Processes:
resource yara_rule behavioral2/memory/1744-121-0x0000000006DE0000-0x0000000006E01000-memory.dmp agile_net behavioral2/memory/1744-124-0x0000000005A30000-0x0000000005F2E000-memory.dmp agile_net -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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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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Suspicious use of SetThreadContext 1 IoCs
Processes:
Thalesnano.exedescription pid process target process PID 1744 set thread context of 2104 1744 Thalesnano.exe InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
Thalesnano.exeInstallUtil.exepid process 1744 Thalesnano.exe 1744 Thalesnano.exe 2104 InstallUtil.exe 2104 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Thalesnano.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 1744 Thalesnano.exe Token: SeDebugPrivilege 2104 InstallUtil.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
InstallUtil.exepid process 2104 InstallUtil.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
Thalesnano.exedescription pid process target process PID 1744 wrote to memory of 2104 1744 Thalesnano.exe InstallUtil.exe PID 1744 wrote to memory of 2104 1744 Thalesnano.exe InstallUtil.exe PID 1744 wrote to memory of 2104 1744 Thalesnano.exe InstallUtil.exe PID 1744 wrote to memory of 2104 1744 Thalesnano.exe InstallUtil.exe PID 1744 wrote to memory of 2104 1744 Thalesnano.exe InstallUtil.exe PID 1744 wrote to memory of 2104 1744 Thalesnano.exe InstallUtil.exe PID 1744 wrote to memory of 2104 1744 Thalesnano.exe InstallUtil.exe PID 1744 wrote to memory of 2104 1744 Thalesnano.exe InstallUtil.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Thalesnano.exe"C:\Users\Admin\AppData\Local\Temp\Thalesnano.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeMD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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memory/1744-120-0x0000000005A30000-0x0000000005F2E000-memory.dmpFilesize
5.0MB
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memory/1744-116-0x0000000005F30000-0x0000000005F31000-memory.dmpFilesize
4KB
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memory/1744-114-0x0000000000FF0000-0x0000000000FF1000-memory.dmpFilesize
4KB
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memory/1744-121-0x0000000006DE0000-0x0000000006E01000-memory.dmpFilesize
132KB
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memory/1744-122-0x0000000006EA0000-0x0000000006EA1000-memory.dmpFilesize
4KB
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memory/1744-123-0x0000000006D90000-0x0000000006D91000-memory.dmpFilesize
4KB
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memory/1744-124-0x0000000005A30000-0x0000000005F2E000-memory.dmpFilesize
5.0MB
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memory/1744-125-0x0000000007430000-0x000000000743B000-memory.dmpFilesize
44KB
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memory/1744-126-0x00000000099D0000-0x00000000099D1000-memory.dmpFilesize
4KB
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memory/1744-118-0x0000000005A30000-0x0000000005A31000-memory.dmpFilesize
4KB
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memory/1744-117-0x0000000005930000-0x0000000005931000-memory.dmpFilesize
4KB
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memory/2104-128-0x000000000043762E-mapping.dmp
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memory/2104-131-0x0000000000780000-0x00000000007BC000-memory.dmpFilesize
240KB
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memory/2104-135-0x0000000004C40000-0x0000000004C41000-memory.dmpFilesize
4KB
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memory/2104-136-0x0000000004D90000-0x0000000004D91000-memory.dmpFilesize
4KB
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memory/2104-139-0x0000000000D10000-0x0000000000D11000-memory.dmpFilesize
4KB
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memory/2104-140-0x0000000004C41000-0x0000000004C42000-memory.dmpFilesize
4KB