Analysis
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max time kernel
147s -
max time network
111s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
26-01-2021 14:14
Static task
static1
Behavioral task
behavioral1
Sample
JUSTF2.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
JUSTF2.exe
Resource
win10v20201028
General
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Target
JUSTF2.exe
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.ionos.es - Port:
587 - Username:
[email protected] - Password:
9p9aB43$
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/3608-3-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral2/memory/3608-4-0x00000000004374EE-mapping.dmp family_agenttesla -
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:
JUSTF2.exedescription pid process target process PID 4028 set thread context of 3608 4028 JUSTF2.exe JUSTF2.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
JUSTF2.exepid process 3608 JUSTF2.exe 3608 JUSTF2.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
JUSTF2.exedescription pid process Token: SeDebugPrivilege 3608 JUSTF2.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
JUSTF2.exedescription pid process target process PID 4028 wrote to memory of 3608 4028 JUSTF2.exe JUSTF2.exe PID 4028 wrote to memory of 3608 4028 JUSTF2.exe JUSTF2.exe PID 4028 wrote to memory of 3608 4028 JUSTF2.exe JUSTF2.exe PID 4028 wrote to memory of 3608 4028 JUSTF2.exe JUSTF2.exe PID 4028 wrote to memory of 3608 4028 JUSTF2.exe JUSTF2.exe PID 4028 wrote to memory of 3608 4028 JUSTF2.exe JUSTF2.exe PID 4028 wrote to memory of 3608 4028 JUSTF2.exe JUSTF2.exe PID 4028 wrote to memory of 3608 4028 JUSTF2.exe JUSTF2.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\JUSTF2.exe"C:\Users\Admin\AppData\Local\Temp\JUSTF2.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4028 -
C:\Users\Admin\AppData\Local\Temp\JUSTF2.exe"C:\Users\Admin\AppData\Local\Temp\JUSTF2.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3608
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\JUSTF2.exe.logMD5
5e7bb97636a484b5a87e60373614279a
SHA136bfdec32eedb141a4a106d89a453326f62593ee
SHA25612ed6e1df2c57556c59dfd6630fd454a9df76166f340c41ee6bc54d98e709e20
SHA512448c62d538e646045d7315ff902b86f614e2dc1eb0959c22c6618fd2c8767c330d24692357559310e6b55b0c35415a14a6ab2d6d9b8d2a03186949b97190fd56
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memory/3608-3-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/3608-4-0x00000000004374EE-mapping.dmp
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memory/3608-6-0x0000000002C20000-0x0000000002C21000-memory.dmpFilesize
4KB
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memory/3608-7-0x0000000002C21000-0x0000000002C22000-memory.dmpFilesize
4KB
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memory/3608-8-0x0000000002C22000-0x0000000002C23000-memory.dmpFilesize
4KB
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memory/4028-2-0x0000000001070000-0x0000000001071000-memory.dmpFilesize
4KB