Analysis
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max time kernel
58s -
max time network
63s -
platform
windows10-1703_x64 -
resource
win10-20220812-ja -
resource tags
arch:x64arch:x86image:win10-20220812-jalocale:ja-jpos:windows10-1703-x64systemwindows -
submitted
17-10-2022 13:09
Static task
static1
Behavioral task
behavioral1
Sample
b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe
Resource
win10-20220812-ja
Behavioral task
behavioral2
Sample
b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe
Resource
win10v2004-20220812-ja
General
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Target
b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe
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Size
798KB
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MD5
d6e177e8a6efdbb56fc0c4bbc8d38bc1
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SHA1
2e74ee7b4684c4b2792fc544a46b406342282490
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SHA256
b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e
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SHA512
1e20b6e80ab27d7781600611a397dd24bcf5392928c23466a4404186e15c2aa3ef2e8f179b8858f35dea41e0f5c3ddead49245b4a6f78c2067421643b4fca4b7
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SSDEEP
12288:/wRfEuYbi5DyeIwAgw8PWb3DkY4pR/SxazhMo8TpCRGr8rCqDmut:lmF5w8PWbgjhMoqpi1
Malware Config
Extracted
snakekeylogger
https://api.telegram.org/bot5336386315:AAFr4275liluBmKq3DdynSzdvBY-y98fXrU/sendMessage?chat_id=1736922894
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 2 IoCs
resource yara_rule behavioral1/memory/3184-251-0x000000000042014E-mapping.dmp family_snakekeylogger behavioral1/memory/3184-315-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger -
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
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe Key opened \REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe Key opened \REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 12 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 5060 set thread context of 3184 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 72 -
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 1968 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4512 powershell.exe 3184 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 4512 powershell.exe 4512 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4512 powershell.exe Token: SeDebugPrivilege 3184 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 5060 wrote to memory of 4512 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 68 PID 5060 wrote to memory of 4512 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 68 PID 5060 wrote to memory of 4512 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 68 PID 5060 wrote to memory of 1968 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 69 PID 5060 wrote to memory of 1968 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 69 PID 5060 wrote to memory of 1968 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 69 PID 5060 wrote to memory of 3184 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 72 PID 5060 wrote to memory of 3184 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 72 PID 5060 wrote to memory of 3184 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 72 PID 5060 wrote to memory of 3184 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 72 PID 5060 wrote to memory of 3184 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 72 PID 5060 wrote to memory of 3184 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 72 PID 5060 wrote to memory of 3184 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 72 PID 5060 wrote to memory of 3184 5060 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe 72 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe"C:\Users\Admin\AppData\Local\Temp\b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5060 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\solgutrgvA.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4512
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\solgutrgvA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp31DD.tmp"2⤵
- Creates scheduled task(s)
PID:1968
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C:\Users\Admin\AppData\Local\Temp\b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe"C:\Users\Admin\AppData\Local\Temp\b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3184
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\b494899f8b5837b0fd6c11cf251967fecd3a77c73bf19b688813d6da1d04ec5e.exe.log
Filesize1KB
MD512557ab909651a6f99d3503d614d3562
SHA1b86745768059a514bea3a438e1e96086af463246
SHA2569589c869703e95d40d5870c60f66d8460f7914e9fe8dd579533c84148112babd
SHA51210cdb2fa7cf054af937b4aeddfe16fe755d6b09db5a51f7052adbf472b4b435e16c141f3712762f3b67f990c3efcfa47659576988e321214c747d6cd98e75521
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Filesize
1KB
MD5037446c653f7d75b8ad4cace96b7b622
SHA1e50fcc0919785182c826e3525ab69d969841dccd
SHA25613c42816ec631b18d52675aa20d5443e3ec70a3c4466109118eade78d08d4f05
SHA512ea0574145601591add980cf895c9633a6b1bf001148a094ad852476d9b8262c618c01b57cb8e9c21795c46fe96a426b10185020942bdd588ba435476e97fe78e