Analysis
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max time kernel
143s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
17/03/2023, 14:11
Static task
static1
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
tmp.exe
Resource
win10v2004-20230220-en
General
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Target
tmp.exe
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Size
701KB
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MD5
8464e5ded61cc6085adeb10e81fc6483
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SHA1
f028454b3e57fed009783c737497983b929fad85
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SHA256
39284637e45691feb034477cb6d51b662892a17b883ce42cee8d8e2fcdda4817
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SHA512
4261dd426d57e6085e52e4bcc4b12eb67927e72f227dab79d7e393e63a8c1ab9bcd9cea63915cad88d6417f268b12bef6dc8222c1e061bda4cdd03fb8c961d8e
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SSDEEP
12288:7C42YzjMYQo4AqrgGiG5Ni1vKkyg2BWRShmxP+BXXKPURUfhaDSwXXJGRTw:7C4z9boNe3RUM+BXrYHwHJT
Malware Config
Extracted
snakekeylogger
https://api.telegram.org/bot6041013494:AAH-I-5N7YCs5dQrpIdJ8toHohqsTM_GsfI/sendMessage?chat_id=6291600401
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 1 IoCs
resource yara_rule behavioral2/memory/4400-147-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation tmp.exe -
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-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp.exe Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp.exe Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp.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 33 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1456 set thread context of 4400 1456 tmp.exe 97 -
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 4224 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 1456 tmp.exe 1456 tmp.exe 1456 tmp.exe 1456 tmp.exe 4444 powershell.exe 4400 tmp.exe 4444 powershell.exe 4400 tmp.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1456 tmp.exe Token: SeDebugPrivilege 4444 powershell.exe Token: SeDebugPrivilege 4400 tmp.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 1456 wrote to memory of 4444 1456 tmp.exe 93 PID 1456 wrote to memory of 4444 1456 tmp.exe 93 PID 1456 wrote to memory of 4444 1456 tmp.exe 93 PID 1456 wrote to memory of 4224 1456 tmp.exe 95 PID 1456 wrote to memory of 4224 1456 tmp.exe 95 PID 1456 wrote to memory of 4224 1456 tmp.exe 95 PID 1456 wrote to memory of 4400 1456 tmp.exe 97 PID 1456 wrote to memory of 4400 1456 tmp.exe 97 PID 1456 wrote to memory of 4400 1456 tmp.exe 97 PID 1456 wrote to memory of 4400 1456 tmp.exe 97 PID 1456 wrote to memory of 4400 1456 tmp.exe 97 PID 1456 wrote to memory of 4400 1456 tmp.exe 97 PID 1456 wrote to memory of 4400 1456 tmp.exe 97 PID 1456 wrote to memory of 4400 1456 tmp.exe 97 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1456 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CiljFQLUOyjbPW.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4444
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CiljFQLUOyjbPW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp18F6.tmp"2⤵
- Creates scheduled task(s)
PID:4224
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C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4400
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD5e95c3153dfa4d0e0f0aa629c20918360
SHA1f232e1868d49e22a79996f74faaff113cb225510
SHA2562d7f669e710214b3396d2b41a856b92075fe33e3f4b31b22d26872a454c7f84c
SHA51278fdac8b4d4421fb3cab520dcaa015afaaf8dcb65c4f238a77de388f9cbec016363d4fe9a5e2b79cd38bd20ebdedce195920340d5dd77b81459af079b753bd62