Analysis
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max time kernel
127s -
max time network
100s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
26-11-2022 22:18
Static task
static1
Behavioral task
behavioral1
Sample
CONTRACT #683793.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
CONTRACT #683793.exe
Resource
win10v2004-20221111-en
General
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Target
CONTRACT #683793.exe
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Size
966KB
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MD5
20fc35db368eec91fa1068dc03147015
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SHA1
50ad1f61e404b32795bc7c1a84bf66e1bc424182
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SHA256
52f21a43347e87dc80a1c50c97e68535687bc95425289b5797e59d96b7edcd57
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SHA512
294ac1dc9800d2caf47c0932ca33d039fc10088b10cd5ebc9d28dd1857d77826b0cb07c8dcabb964b34b51a12e611f26851ef6132260220f329dc5a4e1822a1b
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SSDEEP
24576:sCOqU376Cs7kFgJCUVsuICz/B38/qjI9J0zRT8WWSig+IyXt:srMkbkstmJ3eqj9RJWSigAX
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.southernboilers.org - Port:
587 - Username:
[email protected] - Password:
Sksmoke2018# - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
CONTRACT #683793.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CONTRACT #683793.exe Key opened \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CONTRACT #683793.exe Key opened \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CONTRACT #683793.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 api.ipify.org 5 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
CONTRACT #683793.exedescription pid process target process PID 1220 set thread context of 1152 1220 CONTRACT #683793.exe CONTRACT #683793.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:
CONTRACT #683793.exeCONTRACT #683793.exepid process 1220 CONTRACT #683793.exe 1152 CONTRACT #683793.exe 1152 CONTRACT #683793.exe 1152 CONTRACT #683793.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
CONTRACT #683793.exeCONTRACT #683793.exedescription pid process Token: SeDebugPrivilege 1220 CONTRACT #683793.exe Token: SeDebugPrivilege 1152 CONTRACT #683793.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
CONTRACT #683793.exedescription pid process target process PID 1220 wrote to memory of 1468 1220 CONTRACT #683793.exe schtasks.exe PID 1220 wrote to memory of 1468 1220 CONTRACT #683793.exe schtasks.exe PID 1220 wrote to memory of 1468 1220 CONTRACT #683793.exe schtasks.exe PID 1220 wrote to memory of 1468 1220 CONTRACT #683793.exe schtasks.exe PID 1220 wrote to memory of 1152 1220 CONTRACT #683793.exe CONTRACT #683793.exe PID 1220 wrote to memory of 1152 1220 CONTRACT #683793.exe CONTRACT #683793.exe PID 1220 wrote to memory of 1152 1220 CONTRACT #683793.exe CONTRACT #683793.exe PID 1220 wrote to memory of 1152 1220 CONTRACT #683793.exe CONTRACT #683793.exe PID 1220 wrote to memory of 1152 1220 CONTRACT #683793.exe CONTRACT #683793.exe PID 1220 wrote to memory of 1152 1220 CONTRACT #683793.exe CONTRACT #683793.exe PID 1220 wrote to memory of 1152 1220 CONTRACT #683793.exe CONTRACT #683793.exe PID 1220 wrote to memory of 1152 1220 CONTRACT #683793.exe CONTRACT #683793.exe PID 1220 wrote to memory of 1152 1220 CONTRACT #683793.exe CONTRACT #683793.exe -
outlook_office_path 1 IoCs
Processes:
CONTRACT #683793.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CONTRACT #683793.exe -
outlook_win_path 1 IoCs
Processes:
CONTRACT #683793.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CONTRACT #683793.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\CONTRACT #683793.exe"C:\Users\Admin\AppData\Local\Temp\CONTRACT #683793.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1220 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FGyxgJerZQEg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6807.tmp"2⤵
- Creates scheduled task(s)
PID:1468 -
C:\Users\Admin\AppData\Local\Temp\CONTRACT #683793.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1152
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp6807.tmpFilesize
1KB
MD56909e08ca7767366d420b93d640b2868
SHA1053c3b46c5ee11430a86f787c3e3570011d8643c
SHA2566db02a3202f5c14589aa48bc76eb6940adf695012d8286e0f91772e139b11904
SHA512ce8dbb1475bee0bd8b12dc7bbb11a4ee4a009e91eea4024b0e4bfb5717272393ff098f132d9fe97ccc149af49f75ddc20c5f14cd879e430ddbb78ee3347e0b86
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memory/1152-64-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1152-66-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1152-71-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1152-69-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1152-67-0x0000000000437B8E-mapping.dmp
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memory/1152-65-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1152-61-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1152-62-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1220-54-0x0000000001210000-0x0000000001308000-memory.dmpFilesize
992KB
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memory/1220-55-0x0000000074D81000-0x0000000074D83000-memory.dmpFilesize
8KB
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memory/1220-56-0x0000000000710000-0x0000000000722000-memory.dmpFilesize
72KB
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memory/1220-58-0x0000000005F40000-0x0000000005FBA000-memory.dmpFilesize
488KB
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memory/1220-57-0x0000000005740000-0x00000000057FE000-memory.dmpFilesize
760KB
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memory/1468-59-0x0000000000000000-mapping.dmp