Analysis
- max time kernel
145s - max time network
147s - platform
windows10_x64 - resource
win10v200430 - submitted
11/07/2020, 16:53
Static task
static1
Behavioral task
behavioral1
Sample
Remittance Advice 001-ADEG001pdf.exe
Resource
win7
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
Remittance Advice 001-ADEG001pdf.exe
Resource
win10v200430
windows10_x64
0 signatures
0 seconds
General
- Target Remittance Advice 001-ADEG001pdf.exe
- Size 1.0MB
- Sample200711-dv7hm5ndt6
- SHA256 1095767d566c69cb1b2b6c80eef101d62dc9736e3ef294b43fc23f3d0378ea60
- MD5 9001a87083fbb220841ba6e7d03008e0
- SHA1 dfbb86ff5c1d83decd1850c622c512f14c9bf2d2
- SHA512 dbbd331fcde2034b8223ea9842a95bcb9b847d3c67e588ac544663bc788303124c32374a2e5a8db3845e6bfe4b044fda32017866e9f1d54feda3e967562e2ab7
- MD5 SHA1 SHA512
Malware Config
Extracted
Family
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agenttesla
Credentials
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Protocol
smtp
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Host
smtp.yandex.com
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Port
587
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Username
-
Password
999999xxxsss011x1
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 24 IoCs
resource yara_rule behavioral2/memory/3836-6-0x0000000000D00000-0x000000000141A000-memory.dmp family_agenttesla behavioral2/memory/3836-7-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-11-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-12-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-13-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-14-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-15-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-16-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-17-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-18-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-19-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-21-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-20-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-45-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-46-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-47-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-48-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-49-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-50-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-51-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-52-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-53-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-54-0x0000000000D47A7E-mapping.dmp family_agenttesla behavioral2/memory/3836-55-0x0000000000D47A7E-mapping.dmp family_agenttesla - Executes dropped EXE 2 IoCs
pid Process 2120 dtcqsj.pif 3836 RegSvcs.exe - 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.
- Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run dtcqsj.pif Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\winlogon.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\51308355\\dtcqsj.pif C:\\Users\\Admin\\AppData\\Local\\Temp\\51308355\\LUVKGV~1.NJP" dtcqsj.pif - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2120 set thread context of 3836 2120 dtcqsj.pif 70 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
pid pid_target Process procid_target 3056 3836 WerFault.exe 70 - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 3836 RegSvcs.exe 3836 RegSvcs.exe 3836 RegSvcs.exe 3836 RegSvcs.exe 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 3836 RegSvcs.exe 3836 RegSvcs.exe 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif 2120 dtcqsj.pif - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3836 RegSvcs.exe Token: SeRestorePrivilege 3056 WerFault.exe Token: SeBackupPrivilege 3056 WerFault.exe Token: SeDebugPrivilege 3056 WerFault.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 896 wrote to memory of 2120 896 Remittance Advice 001-ADEG001pdf.exe 68 PID 896 wrote to memory of 2120 896 Remittance Advice 001-ADEG001pdf.exe 68 PID 896 wrote to memory of 2120 896 Remittance Advice 001-ADEG001pdf.exe 68 PID 2120 wrote to memory of 3836 2120 dtcqsj.pif 70 PID 2120 wrote to memory of 3836 2120 dtcqsj.pif 70 PID 2120 wrote to memory of 3836 2120 dtcqsj.pif 70 PID 2120 wrote to memory of 3836 2120 dtcqsj.pif 70 PID 2120 wrote to memory of 3836 2120 dtcqsj.pif 70
Processes
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C:\Users\Admin\AppData\Local\Temp\Remittance Advice 001-ADEG001pdf.exe"C:\Users\Admin\AppData\Local\Temp\Remittance Advice 001-ADEG001pdf.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:896 -
C:\Users\Admin\AppData\Local\Temp\51308355\dtcqsj.pif"C:\Users\Admin\AppData\Local\Temp\51308355\dtcqsj.pif" luvkgvlmt.njp2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2120 -
C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3836 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3836 -s 13204⤵
- Program crash
- Suspicious use of AdjustPrivilegeToken
PID:3056
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