Analysis

  • 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

General

  • Target

    INV.exe

  • Size

    674KB

  • MD5

    b7d48d8454f4aa3ae1b0ed7e53559628

  • SHA1

    acbe3e258e28449feaffd199cdf005dd3bec231c

  • SHA256

    7c1725edad4a3366d166366f35d611e65705a084dc67f886b1963857f8dfa641

  • SHA512

    a8509642e21e8c28cb8aa5959a63c0fb8affbf27c8102cc381734781b959d3122991498ee9f302b4a381b4e733beeed31316ef912e83c9fc41f08d2e0f482424

  • SSDEEP

    12288:Tuid7BR6wTuHt1fKOGyfoAuuCQ1RP+OSMOcNojh31Pm+HX+Si:CipBelrGDAuuCQCGojh31e+3S

Malware Config

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • 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

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\INV.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pylvkozl.gxc.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp7CFB.tmp

    Filesize

    1KB

    MD5

    c946095490d5d45136beb87cd5372308

    SHA1

    31975f784bdcd67ae113a0709bb4b69d2c02d22a

    SHA256

    621070fe652f5149d589f15c703861d0b099e226b596f0decd69d1dd11f39231

    SHA512

    cdea23e65c07b1a8a488c76f6ecf7f6ff372042be1f67798dd0c974b4fd8b8f878f5e5c4ada5f4998a5121c17bbb12b63090ca54bd9305bd9497a0627647ef3a

  • memory/2876-71-0x0000000005130000-0x0000000005140000-memory.dmp

    Filesize

    64KB

  • memory/2876-27-0x0000000005130000-0x0000000005140000-memory.dmp

    Filesize

    64KB

  • memory/2876-25-0x00000000752A0000-0x0000000075A50000-memory.dmp

    Filesize

    7.7MB

  • memory/2876-66-0x0000000006460000-0x00000000064B0000-memory.dmp

    Filesize

    320KB

  • memory/2876-21-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2876-67-0x0000000006680000-0x0000000006842000-memory.dmp

    Filesize

    1.8MB

  • memory/2876-70-0x00000000752A0000-0x0000000075A50000-memory.dmp

    Filesize

    7.7MB

  • memory/4052-6-0x0000000005B00000-0x0000000005B1A000-memory.dmp

    Filesize

    104KB

  • memory/4052-0-0x00000000752A0000-0x0000000075A50000-memory.dmp

    Filesize

    7.7MB

  • memory/4052-12-0x0000000005500000-0x0000000005510000-memory.dmp

    Filesize

    64KB

  • memory/4052-10-0x000000000FAB0000-0x000000000FB4C000-memory.dmp

    Filesize

    624KB

  • memory/4052-9-0x000000000C410000-0x000000000C48A000-memory.dmp

    Filesize

    488KB

  • memory/4052-8-0x0000000005B30000-0x0000000005B3A000-memory.dmp

    Filesize

    40KB

  • memory/4052-7-0x0000000005B20000-0x0000000005B28000-memory.dmp

    Filesize

    32KB

  • memory/4052-11-0x00000000752A0000-0x0000000075A50000-memory.dmp

    Filesize

    7.7MB

  • memory/4052-5-0x0000000005520000-0x000000000552A000-memory.dmp

    Filesize

    40KB

  • memory/4052-4-0x0000000005500000-0x0000000005510000-memory.dmp

    Filesize

    64KB

  • memory/4052-3-0x0000000005590000-0x0000000005622000-memory.dmp

    Filesize

    584KB

  • memory/4052-26-0x00000000752A0000-0x0000000075A50000-memory.dmp

    Filesize

    7.7MB

  • memory/4052-2-0x0000000005B40000-0x00000000060E4000-memory.dmp

    Filesize

    5.6MB

  • memory/4052-1-0x0000000000A60000-0x0000000000B0E000-memory.dmp

    Filesize

    696KB

  • memory/4356-29-0x0000000004F10000-0x0000000004F76000-memory.dmp

    Filesize

    408KB

  • memory/4356-59-0x00000000071F0000-0x00000000071FA000-memory.dmp

    Filesize

    40KB

  • memory/4356-28-0x0000000004D70000-0x0000000004D92000-memory.dmp

    Filesize

    136KB

  • memory/4356-40-0x00000000057E0000-0x0000000005B34000-memory.dmp

    Filesize

    3.3MB

  • memory/4356-41-0x0000000005E50000-0x0000000005E6E000-memory.dmp

    Filesize

    120KB

  • memory/4356-42-0x0000000005E70000-0x0000000005EBC000-memory.dmp

    Filesize

    304KB

  • memory/4356-43-0x00000000026E0000-0x00000000026F0000-memory.dmp

    Filesize

    64KB

  • memory/4356-44-0x0000000006440000-0x0000000006472000-memory.dmp

    Filesize

    200KB

  • memory/4356-45-0x0000000070B80000-0x0000000070BCC000-memory.dmp

    Filesize

    304KB

  • memory/4356-55-0x0000000006420000-0x000000000643E000-memory.dmp

    Filesize

    120KB

  • memory/4356-56-0x0000000006E40000-0x0000000006EE3000-memory.dmp

    Filesize

    652KB

  • memory/4356-57-0x00000000077C0000-0x0000000007E3A000-memory.dmp

    Filesize

    6.5MB

  • memory/4356-58-0x0000000007170000-0x000000000718A000-memory.dmp

    Filesize

    104KB

  • memory/4356-30-0x00000000056F0000-0x0000000005756000-memory.dmp

    Filesize

    408KB

  • memory/4356-60-0x00000000073F0000-0x0000000007486000-memory.dmp

    Filesize

    600KB

  • memory/4356-61-0x0000000007370000-0x0000000007381000-memory.dmp

    Filesize

    68KB

  • memory/4356-62-0x00000000073A0000-0x00000000073AE000-memory.dmp

    Filesize

    56KB

  • memory/4356-63-0x00000000073B0000-0x00000000073C4000-memory.dmp

    Filesize

    80KB

  • memory/4356-64-0x00000000074B0000-0x00000000074CA000-memory.dmp

    Filesize

    104KB

  • memory/4356-65-0x0000000007490000-0x0000000007498000-memory.dmp

    Filesize

    32KB

  • memory/4356-24-0x00000000050C0000-0x00000000056E8000-memory.dmp

    Filesize

    6.2MB

  • memory/4356-19-0x0000000002570000-0x00000000025A6000-memory.dmp

    Filesize

    216KB

  • memory/4356-69-0x00000000752A0000-0x0000000075A50000-memory.dmp

    Filesize

    7.7MB

  • memory/4356-18-0x00000000026E0000-0x00000000026F0000-memory.dmp

    Filesize

    64KB

  • memory/4356-17-0x00000000752A0000-0x0000000075A50000-memory.dmp

    Filesize

    7.7MB