Analysis
- max time kernel
150s - max time network
134s - platform
windows10_x64 - resource
win10 - submitted
24/06/2020, 14:54
Static task
static1
Behavioral task
behavioral1
Sample
ENQUIRY2.exe
Resource
win7
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
ENQUIRY2.exe
Resource
win10
windows10_x64
0 signatures
0 seconds
General
- Target ENQUIRY2.exe
- Size 1.1MB
- Sample200624-e8ztkqwhmj
- SHA256 8bc57dbd7aa1c3ac5b3e4f743eb616b93aec9bae6975ccdaa9ad596ada32275b
- MD5 3be28133b28c2bbeee9dcf40db704e95
- SHA1 0208cbf4f8c217b50eacf1b55c87eb666e8225ce
- SHA512 e8dc4639629faea01ebd68e3856cad2f80ab9b4eb540868b8fa75ed1e734b7ba3f6069a812a0868e1b0dadd9b86ecc43ddaae1202fea74ed9b1be95030c73248
- MD5 SHA1 SHA512
Malware Config
Extracted
Family
-
agenttesla
Credentials
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
esut96092
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
resource yara_rule behavioral2/memory/2080-6-0x0000000000540000-0x0000000000AD1000-memory.dmp family_agenttesla behavioral2/memory/2080-7-0x0000000000586A7E-mapping.dmp family_agenttesla - Executes dropped EXE 2 IoCs
pid Process 1892 rxss.pif 2080 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 rxss.pif Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\file.exe = "c:\\27027319\\rxss.pif c:\\27027319\\qtooki.jwq" rxss.pif - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1892 set thread context of 2080 1892 rxss.pif 69 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1892 rxss.pif 1892 rxss.pif 2080 RegSvcs.exe 2080 RegSvcs.exe 2080 RegSvcs.exe 2080 RegSvcs.exe 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 2080 RegSvcs.exe 2080 RegSvcs.exe 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif 1892 rxss.pif - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2080 RegSvcs.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2080 RegSvcs.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2460 wrote to memory of 1892 2460 ENQUIRY2.exe 67 PID 2460 wrote to memory of 1892 2460 ENQUIRY2.exe 67 PID 2460 wrote to memory of 1892 2460 ENQUIRY2.exe 67 PID 1892 wrote to memory of 2080 1892 rxss.pif 69 PID 1892 wrote to memory of 2080 1892 rxss.pif 69 PID 1892 wrote to memory of 2080 1892 rxss.pif 69 PID 1892 wrote to memory of 2080 1892 rxss.pif 69 PID 1892 wrote to memory of 2080 1892 rxss.pif 69
Processes
-
C:\Users\Admin\AppData\Local\Temp\ENQUIRY2.exe"C:\Users\Admin\AppData\Local\Temp\ENQUIRY2.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2460 -
C:\27027319\rxss.pif"C:\27027319\rxss.pif" qtooki.jwq2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1892 -
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
- Suspicious use of SetWindowsHookEx
PID:2080
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