Analysis
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max time kernel
128s -
max time network
110s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
19-04-2021 18:13
Static task
static1
Behavioral task
behavioral1
Sample
shipping document.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
shipping document.exe
Resource
win10v20210410
General
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Target
shipping document.exe
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Size
903KB
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MD5
b2e8cb36e8ed07eeb5873988a10e629e
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SHA1
4c27ed343a8991373edcab4856ee5455e060aa0d
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SHA256
1591047265c7c48f80cfaae3ce6745bd132236aad0cd93515f384fd94e583502
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SHA512
5c572770494269f70f00352c5d329fe757cd17f7cfebdc838675feec14ea2d7b2fe7d12fb5eb8a86836328666763ae4b4443a3c66b129c9e1da06ae84746328f
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.a-k.co.ir - Port:
587 - Username:
[email protected] - Password:
09133434194
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 4 IoCs
Processes:
resource yara_rule behavioral2/memory/3908-125-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral2/memory/3908-126-0x00000000004375FE-mapping.dmp family_agenttesla behavioral2/memory/3908-132-0x00000000051B0000-0x00000000056AE000-memory.dmp family_agenttesla behavioral2/memory/3908-137-0x00000000051B0000-0x00000000056AE000-memory.dmp family_agenttesla -
Drops file in Drivers directory 1 IoCs
Processes:
shipping document.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts shipping document.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:
shipping document.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\kprUEGC = "C:\\Users\\Admin\\AppData\\Roaming\\kprUEGC\\kprUEGC.exe" shipping document.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
shipping document.exedescription pid process target process PID 3172 set thread context of 3908 3172 shipping document.exe shipping document.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
shipping document.exepid process 3908 shipping document.exe 3908 shipping document.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
shipping document.exedescription pid process Token: SeDebugPrivilege 3908 shipping document.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
shipping document.exepid process 3908 shipping document.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
shipping document.exedescription pid process target process PID 3172 wrote to memory of 3908 3172 shipping document.exe shipping document.exe PID 3172 wrote to memory of 3908 3172 shipping document.exe shipping document.exe PID 3172 wrote to memory of 3908 3172 shipping document.exe shipping document.exe PID 3172 wrote to memory of 3908 3172 shipping document.exe shipping document.exe PID 3172 wrote to memory of 3908 3172 shipping document.exe shipping document.exe PID 3172 wrote to memory of 3908 3172 shipping document.exe shipping document.exe PID 3172 wrote to memory of 3908 3172 shipping document.exe shipping document.exe PID 3172 wrote to memory of 3908 3172 shipping document.exe shipping document.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\shipping document.exe"C:\Users\Admin\AppData\Local\Temp\shipping document.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\shipping document.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
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\shipping document.exe.logMD5
0c2899d7c6746f42d5bbe088c777f94c
SHA1622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1
SHA2565b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458
SHA512ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078
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memory/3172-119-0x0000000005460000-0x00000000054F2000-memory.dmpFilesize
584KB
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memory/3172-122-0x000000007E700000-0x000000007E701000-memory.dmpFilesize
4KB
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memory/3172-118-0x00000000054C0000-0x00000000054C1000-memory.dmpFilesize
4KB
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memory/3172-114-0x0000000000BA0000-0x0000000000BA1000-memory.dmpFilesize
4KB
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memory/3172-124-0x00000000014E0000-0x000000000155F000-memory.dmpFilesize
508KB
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memory/3172-121-0x00000000070C0000-0x00000000070C5000-memory.dmpFilesize
20KB
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memory/3172-117-0x0000000005500000-0x0000000005501000-memory.dmpFilesize
4KB
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memory/3172-123-0x0000000007C20000-0x0000000007CDF000-memory.dmpFilesize
764KB
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memory/3172-120-0x00000000070F0000-0x00000000070F1000-memory.dmpFilesize
4KB
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memory/3172-116-0x0000000005B50000-0x0000000005B51000-memory.dmpFilesize
4KB
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memory/3908-126-0x00000000004375FE-mapping.dmp
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memory/3908-125-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/3908-132-0x00000000051B0000-0x00000000056AE000-memory.dmpFilesize
5.0MB
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memory/3908-133-0x0000000005370000-0x0000000005371000-memory.dmpFilesize
4KB
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memory/3908-134-0x0000000005F10000-0x0000000005F11000-memory.dmpFilesize
4KB
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memory/3908-137-0x00000000051B0000-0x00000000056AE000-memory.dmpFilesize
5.0MB