Analysis
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max time kernel
110s -
max time network
97s -
platform
windows10_x64 -
resource
win10v200430 -
submitted
17-07-2020 20:23
Static task
static1
Behavioral task
behavioral1
Sample
BL Draft DOC-20200716-PL#73820.exe
Resource
win7v200430
Behavioral task
behavioral2
Sample
BL Draft DOC-20200716-PL#73820.exe
Resource
win10v200430
General
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Target
BL Draft DOC-20200716-PL#73820.exe
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Size
569KB
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MD5
9d053999325a2bec268f87221c67e989
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SHA1
76f78a2db52f185dae549602630cd3e4fb840b48
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SHA256
7dca78670f25be48dc43566c5d13185a9f6fa638f7bca006ebbb16f433b6bba1
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SHA512
ecba794cd2d13b55339964c02ab28e784fc1ca89ce2eda5eb571b0cef06af70c34f4a747cfce5d5bd3bbb3028f0db416aa222294def7ad82743eba4cd2dd49f8
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
Sages101*
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
resource yara_rule behavioral2/memory/2728-2-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral2/memory/2728-3-0x000000000044701E-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
description pid Process procid_target PID 2564 set thread context of 2728 2564 BL Draft DOC-20200716-PL#73820.exe 74 -
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.
pid Process 2192 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2728 BL Draft DOC-20200716-PL#73820.exe 2728 BL Draft DOC-20200716-PL#73820.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2728 BL Draft DOC-20200716-PL#73820.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 2564 wrote to memory of 2192 2564 BL Draft DOC-20200716-PL#73820.exe 72 PID 2564 wrote to memory of 2192 2564 BL Draft DOC-20200716-PL#73820.exe 72 PID 2564 wrote to memory of 2192 2564 BL Draft DOC-20200716-PL#73820.exe 72 PID 2564 wrote to memory of 2728 2564 BL Draft DOC-20200716-PL#73820.exe 74 PID 2564 wrote to memory of 2728 2564 BL Draft DOC-20200716-PL#73820.exe 74 PID 2564 wrote to memory of 2728 2564 BL Draft DOC-20200716-PL#73820.exe 74 PID 2564 wrote to memory of 2728 2564 BL Draft DOC-20200716-PL#73820.exe 74 PID 2564 wrote to memory of 2728 2564 BL Draft DOC-20200716-PL#73820.exe 74 PID 2564 wrote to memory of 2728 2564 BL Draft DOC-20200716-PL#73820.exe 74 PID 2564 wrote to memory of 2728 2564 BL Draft DOC-20200716-PL#73820.exe 74 PID 2564 wrote to memory of 2728 2564 BL Draft DOC-20200716-PL#73820.exe 74
Processes
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C:\Users\Admin\AppData\Local\Temp\BL Draft DOC-20200716-PL#73820.exe"C:\Users\Admin\AppData\Local\Temp\BL Draft DOC-20200716-PL#73820.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2564 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\Halnza" /XML "C:\Users\Admin\AppData\Local\Temp\tmp49D0.tmp"2⤵
- Creates scheduled task(s)
PID:2192
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C:\Users\Admin\AppData\Local\Temp\BL Draft DOC-20200716-PL#73820.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2728
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