Analysis
- max time kernel
101s - max time network
41s - platform
windows7_x64 - resource
win7v200722 - submitted
03/08/2020, 07:45
Static task
static1
Behavioral task
behavioral1
Sample
Invoice PI#54738 - Packing list [email protected]
Resource
win7v200722
Behavioral task
behavioral2
Sample
Invoice PI#54738 - Packing list [email protected]
Resource
win10v200722
General
- Target Invoice PI#54738 - Packing list [email protected]
- Size 615KB
- Sample200803-cfq31tca1e
- SHA256 528d0007809c7002553af6f0e778ecd2ea005b446263a226fe8857d163d2c7a8
- MD5 b6bdfdc433ab027c16774c91755af5db
- SHA1 ad2d8848334abce01d26ae3ee8da93a36f84dbfc
- SHA512 08e46db9d5c979d7fc5315c87ec66998398c2735a84ffc02a6b65f455a7c7b1cf1fc6f65378cb63a2789d63c4582751cbc3953b03604b9d8d10e64f711702f31
- MD5 SHA1 SHA512
Malware Config
Extracted
-
agenttesla
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Protocol
smtp
-
Host
smtp.yandex.com
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Port
587
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Username
-
Password
Sages101*
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 IoCs
resource yara_rule behavioral1/memory/1772-3-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1772-4-0x000000000044701E-mapping.dmp family_agenttesla behavioral1/memory/1772-5-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1772-6-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla - Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1060 set thread context of 1772 1060 Invoice PI#54738 - Packing list [email protected] 28 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1836 schtasks.exe - Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 1060 Invoice PI#54738 - Packing list [email protected] 1060 Invoice PI#54738 - Packing list [email protected] 1060 Invoice PI#54738 - Packing list [email protected] 1772 Invoice PI#54738 - Packing list [email protected] 1772 Invoice PI#54738 - Packing list [email protected] - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1060 Invoice PI#54738 - Packing list [email protected] Token: SeDebugPrivilege 1772 Invoice PI#54738 - Packing list [email protected] - Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 1060 wrote to memory of 1836 1060 Invoice PI#54738 - Packing list [email protected] 26 PID 1060 wrote to memory of 1836 1060 Invoice PI#54738 - Packing list [email protected] 26 PID 1060 wrote to memory of 1836 1060 Invoice PI#54738 - Packing list [email protected] 26 PID 1060 wrote to memory of 1836 1060 Invoice PI#54738 - Packing list [email protected] 26 PID 1060 wrote to memory of 1772 1060 Invoice PI#54738 - Packing list [email protected] 28 PID 1060 wrote to memory of 1772 1060 Invoice PI#54738 - Packing list [email protected] 28 PID 1060 wrote to memory of 1772 1060 Invoice PI#54738 - Packing list [email protected] 28 PID 1060 wrote to memory of 1772 1060 Invoice PI#54738 - Packing list [email protected] 28 PID 1060 wrote to memory of 1772 1060 Invoice PI#54738 - Packing list [email protected] 28 PID 1060 wrote to memory of 1772 1060 Invoice PI#54738 - Packing list [email protected] 28 PID 1060 wrote to memory of 1772 1060 Invoice PI#54738 - Packing list [email protected] 28 PID 1060 wrote to memory of 1772 1060 Invoice PI#54738 - Packing list [email protected] 28 PID 1060 wrote to memory of 1772 1060 Invoice PI#54738 - Packing list [email protected] 28
Processes
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C:\Users\Admin\AppData\Local\Temp\Invoice PI#54738 - Packing list [email protected]"C:\Users\Admin\AppData\Local\Temp\Invoice PI#54738 - Packing list [email protected]"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1060 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6CC6.tmp"2⤵
- Creates scheduled task(s)
PID:1836
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C:\Users\Admin\AppData\Local\Temp\Invoice PI#54738 - Packing list [email protected]"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1772
-