Analysis
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max time kernel
142s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system -
submitted
28-11-2023 06:50
Static task
static1
Behavioral task
behavioral1
Sample
INV.exe
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
INV.exe
Resource
win10v2004-20231127-en
General
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Target
INV.exe
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Size
674KB
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MD5
b7d48d8454f4aa3ae1b0ed7e53559628
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SHA1
acbe3e258e28449feaffd199cdf005dd3bec231c
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SHA256
7c1725edad4a3366d166366f35d611e65705a084dc67f886b1963857f8dfa641
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SHA512
a8509642e21e8c28cb8aa5959a63c0fb8affbf27c8102cc381734781b959d3122991498ee9f302b4a381b4e733beeed31316ef912e83c9fc41f08d2e0f482424
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SSDEEP
12288:Tuid7BR6wTuHt1fKOGyfoAuuCQ1RP+OSMOcNojh31Pm+HX+Si:CipBelrGDAuuCQCGojh31e+3S
Malware Config
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/2876-21-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
INV.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3635043082-2972811465-3176142135-1000\Control Panel\International\Geo\Nation INV.exe -
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:
INV.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3635043082-2972811465-3176142135-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV.exe Key opened \REGISTRY\USER\S-1-5-21-3635043082-2972811465-3176142135-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV.exe Key opened \REGISTRY\USER\S-1-5-21-3635043082-2972811465-3176142135-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV.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.
Processes:
flow ioc 25 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
INV.exedescription pid process target process PID 4052 set thread context of 2876 4052 INV.exe INV.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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:
INV.exepowershell.exepid process 2876 INV.exe 4356 powershell.exe 4356 powershell.exe 2876 INV.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
INV.exepowershell.exedescription pid process Token: SeDebugPrivilege 2876 INV.exe Token: SeDebugPrivilege 4356 powershell.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
INV.exedescription pid process target process PID 4052 wrote to memory of 4356 4052 INV.exe powershell.exe PID 4052 wrote to memory of 4356 4052 INV.exe powershell.exe PID 4052 wrote to memory of 4356 4052 INV.exe powershell.exe PID 4052 wrote to memory of 3348 4052 INV.exe schtasks.exe PID 4052 wrote to memory of 3348 4052 INV.exe schtasks.exe PID 4052 wrote to memory of 3348 4052 INV.exe schtasks.exe PID 4052 wrote to memory of 2876 4052 INV.exe INV.exe PID 4052 wrote to memory of 2876 4052 INV.exe INV.exe PID 4052 wrote to memory of 2876 4052 INV.exe INV.exe PID 4052 wrote to memory of 2876 4052 INV.exe INV.exe PID 4052 wrote to memory of 2876 4052 INV.exe INV.exe PID 4052 wrote to memory of 2876 4052 INV.exe INV.exe PID 4052 wrote to memory of 2876 4052 INV.exe INV.exe PID 4052 wrote to memory of 2876 4052 INV.exe INV.exe -
outlook_office_path 1 IoCs
Processes:
INV.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3635043082-2972811465-3176142135-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV.exe -
outlook_win_path 1 IoCs
Processes:
INV.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3635043082-2972811465-3176142135-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INV.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\INV.exe"C:\Users\Admin\AppData\Local\Temp\INV.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4052 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\VedVuxqfLPu.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4356 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VedVuxqfLPu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7CFB.tmp"2⤵
- Creates scheduled task(s)
PID:3348 -
C:\Users\Admin\AppData\Local\Temp\INV.exe"C:\Users\Admin\AppData\Local\Temp\INV.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2876
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD5c946095490d5d45136beb87cd5372308
SHA131975f784bdcd67ae113a0709bb4b69d2c02d22a
SHA256621070fe652f5149d589f15c703861d0b099e226b596f0decd69d1dd11f39231
SHA512cdea23e65c07b1a8a488c76f6ecf7f6ff372042be1f67798dd0c974b4fd8b8f878f5e5c4ada5f4998a5121c17bbb12b63090ca54bd9305bd9497a0627647ef3a