Analysis
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max time kernel
123s -
max time network
135s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
28-07-2021 10:03
Static task
static1
Behavioral task
behavioral1
Sample
bank account.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
bank account.exe
Resource
win10v20210410
General
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Target
bank account.exe
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Size
780KB
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MD5
a5640ac4a8b294df8ced6dfd0ca544f3
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SHA1
94fc2bc720e88f5f1bcab268fd441c3f640d63c3
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SHA256
c57c8d4d2e724683791c90f26d4499886ab0498688740b5433e1c4a36680564e
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SHA512
c49a3f261ee1832bc41d887bf0b195ea707a4eb4fd15f46bd3ec55329169ae97d1953338e736532219b483b2954f76545544eb1e7fc632ea78c48b31bb012fbd
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
Mail.jingtai.com.vn - Port:
587 - Username:
[email protected] - Password:
truongtuyen2209
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/3264-126-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral2/memory/3264-127-0x000000000043768E-mapping.dmp family_agenttesla behavioral2/memory/3264-133-0x0000000005150000-0x000000000564E000-memory.dmp family_agenttesla -
Drops file in Drivers directory 1 IoCs
Processes:
bank account.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts bank account.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:
bank account.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\hgvQCmQ = "C:\\Users\\Admin\\AppData\\Roaming\\hgvQCmQ\\hgvQCmQ.exe" bank account.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
bank account.exedescription pid process target process PID 4076 set thread context of 3264 4076 bank account.exe bank account.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:
bank account.exebank account.exepid process 4076 bank account.exe 4076 bank account.exe 3264 bank account.exe 3264 bank account.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
bank account.exebank account.exedescription pid process Token: SeDebugPrivilege 4076 bank account.exe Token: SeDebugPrivilege 3264 bank account.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
bank account.exedescription pid process target process PID 4076 wrote to memory of 1224 4076 bank account.exe schtasks.exe PID 4076 wrote to memory of 1224 4076 bank account.exe schtasks.exe PID 4076 wrote to memory of 1224 4076 bank account.exe schtasks.exe PID 4076 wrote to memory of 1088 4076 bank account.exe bank account.exe PID 4076 wrote to memory of 1088 4076 bank account.exe bank account.exe PID 4076 wrote to memory of 1088 4076 bank account.exe bank account.exe PID 4076 wrote to memory of 3264 4076 bank account.exe bank account.exe PID 4076 wrote to memory of 3264 4076 bank account.exe bank account.exe PID 4076 wrote to memory of 3264 4076 bank account.exe bank account.exe PID 4076 wrote to memory of 3264 4076 bank account.exe bank account.exe PID 4076 wrote to memory of 3264 4076 bank account.exe bank account.exe PID 4076 wrote to memory of 3264 4076 bank account.exe bank account.exe PID 4076 wrote to memory of 3264 4076 bank account.exe bank account.exe PID 4076 wrote to memory of 3264 4076 bank account.exe bank account.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\bank account.exe"C:\Users\Admin\AppData\Local\Temp\bank account.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\IVNmTSJGrzid" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9D11.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\bank account.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\bank account.exe"{path}"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\bank account.exe.logMD5
0c2899d7c6746f42d5bbe088c777f94c
SHA1622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1
SHA2565b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458
SHA512ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078
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C:\Users\Admin\AppData\Local\Temp\tmp9D11.tmpMD5
98edd11150c6e1baf4103e52bc1ab008
SHA13e6b92d892253c2b954b48783fe81a7c76092f23
SHA256b307d1e10279f111b747aa4a5bb80323bd7209a805c50018138968d406990c66
SHA512f06feac345076793009e9e26a86d2f753eec82b518c1b3d6a846abee21f7735fc8309e271b4a886b2f3633925a9f866cc1c570c7da1b5426c0f429d360176351
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memory/1224-124-0x0000000000000000-mapping.dmp
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memory/3264-135-0x0000000005E40000-0x0000000005E41000-memory.dmpFilesize
4KB
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memory/3264-134-0x0000000005160000-0x0000000005161000-memory.dmpFilesize
4KB
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memory/3264-133-0x0000000005150000-0x000000000564E000-memory.dmpFilesize
5.0MB
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memory/3264-127-0x000000000043768E-mapping.dmp
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memory/3264-126-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/4076-119-0x0000000005AD0000-0x0000000005AD2000-memory.dmpFilesize
8KB
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memory/4076-123-0x00000000072F0000-0x0000000007328000-memory.dmpFilesize
224KB
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memory/4076-122-0x00000000073B0000-0x000000000742D000-memory.dmpFilesize
500KB
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memory/4076-121-0x0000000003030000-0x0000000003031000-memory.dmpFilesize
4KB
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memory/4076-120-0x0000000008C40000-0x0000000008C41000-memory.dmpFilesize
4KB
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memory/4076-114-0x0000000000D90000-0x0000000000D91000-memory.dmpFilesize
4KB
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memory/4076-118-0x00000000056A0000-0x00000000056A1000-memory.dmpFilesize
4KB
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memory/4076-117-0x0000000005700000-0x0000000005701000-memory.dmpFilesize
4KB
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memory/4076-116-0x0000000005B60000-0x0000000005B61000-memory.dmpFilesize
4KB