Analysis
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max time kernel
95s -
max time network
70s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
27-07-2021 14:05
Static task
static1
Behavioral task
behavioral1
Sample
TT COPY.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
TT COPY.exe
Resource
win10v20210408
General
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Target
TT COPY.exe
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Size
988KB
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MD5
197e571bfcf3f22816e245fef4f86b4f
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SHA1
60df9b31aeb301c4c480da58f75be14d775cb604
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SHA256
fc22aaa35e5504461dd5ace02d041f7715bc25acf329d2070e02e854b54d4de0
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SHA512
f7bc869cae343ee6dc5230d54eb6e775490733df911e36e3427dda88b75d240131ff8c1bd0e23d6f93c28e4691566cc90a2c092111f9d38b241365d3f483558a
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
paola.micheli@copangroup.xyz - Password:
gibson.1990
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 behavioral2/memory/4028-124-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral2/memory/4028-125-0x000000000043760E-mapping.dmp family_agenttesla behavioral2/memory/4028-131-0x00000000050D0000-0x00000000055CE000-memory.dmp family_agenttesla -
Drops file in Drivers directory 1 IoCs
Processes:
TT COPY.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts TT COPY.exe -
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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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
TT COPY.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\NXLun = "C:\\Users\\Admin\\AppData\\Roaming\\NXLun\\NXLun.exe" TT COPY.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
TT COPY.exedescription pid process target process PID 652 set thread context of 4028 652 TT COPY.exe TT COPY.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
TT COPY.exeTT COPY.exepid process 652 TT COPY.exe 652 TT COPY.exe 652 TT COPY.exe 652 TT COPY.exe 4028 TT COPY.exe 4028 TT COPY.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
TT COPY.exeTT COPY.exedescription pid process Token: SeDebugPrivilege 652 TT COPY.exe Token: SeDebugPrivilege 4028 TT COPY.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
TT COPY.exedescription pid process target process PID 652 wrote to memory of 3500 652 TT COPY.exe TT COPY.exe PID 652 wrote to memory of 3500 652 TT COPY.exe TT COPY.exe PID 652 wrote to memory of 3500 652 TT COPY.exe TT COPY.exe PID 652 wrote to memory of 3784 652 TT COPY.exe TT COPY.exe PID 652 wrote to memory of 3784 652 TT COPY.exe TT COPY.exe PID 652 wrote to memory of 3784 652 TT COPY.exe TT COPY.exe PID 652 wrote to memory of 4028 652 TT COPY.exe TT COPY.exe PID 652 wrote to memory of 4028 652 TT COPY.exe TT COPY.exe PID 652 wrote to memory of 4028 652 TT COPY.exe TT COPY.exe PID 652 wrote to memory of 4028 652 TT COPY.exe TT COPY.exe PID 652 wrote to memory of 4028 652 TT COPY.exe TT COPY.exe PID 652 wrote to memory of 4028 652 TT COPY.exe TT COPY.exe PID 652 wrote to memory of 4028 652 TT COPY.exe TT COPY.exe PID 652 wrote to memory of 4028 652 TT COPY.exe TT COPY.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\TT COPY.exe"C:\Users\Admin\AppData\Local\Temp\TT COPY.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\TT COPY.exe"C:\Users\Admin\AppData\Local\Temp\TT COPY.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\TT COPY.exe"C:\Users\Admin\AppData\Local\Temp\TT COPY.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\TT COPY.exe"C:\Users\Admin\AppData\Local\Temp\TT COPY.exe"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\TT COPY.exe.logMD5
a31dce488913906093df2ebc9493f627
SHA170873fcb856c1614fd605128e926229b04c838d7
SHA2567795df31e5563550e636a862760067408a3bd84f7c258376895f58d55cd6aebd
SHA5125a0913b1d03510b58a9596d718c975cfdf3e9d570460caed07acebf5a4b19cf1cf729f2d4a1a33c832a761028030cf05da8dee5c34a4120b22f55a5f6d26c495
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memory/652-123-0x00000000056C0000-0x00000000056CF000-memory.dmpFilesize
60KB
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memory/652-116-0x0000000005BF0000-0x0000000005BF1000-memory.dmpFilesize
4KB
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memory/652-118-0x0000000005790000-0x0000000005791000-memory.dmpFilesize
4KB
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memory/652-119-0x0000000005810000-0x0000000005811000-memory.dmpFilesize
4KB
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memory/652-120-0x0000000005620000-0x00000000056BC000-memory.dmpFilesize
624KB
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memory/652-121-0x0000000005660000-0x0000000005661000-memory.dmpFilesize
4KB
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memory/652-117-0x00000000056F0000-0x00000000056F1000-memory.dmpFilesize
4KB
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memory/652-114-0x0000000000D70000-0x0000000000D71000-memory.dmpFilesize
4KB
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memory/652-122-0x0000000005950000-0x00000000059B8000-memory.dmpFilesize
416KB
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memory/4028-125-0x000000000043760E-mapping.dmp
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memory/4028-124-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/4028-131-0x00000000050D0000-0x00000000055CE000-memory.dmpFilesize
4MB
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memory/4028-132-0x00000000055A0000-0x00000000055A1000-memory.dmpFilesize
4KB
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memory/4028-133-0x0000000005E30000-0x0000000005E31000-memory.dmpFilesize
4KB
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memory/4028-135-0x0000000000F30000-0x0000000000F31000-memory.dmpFilesize
4KB