Analysis

  • max time kernel
    146s
  • max time network
    14s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    03-05-2021 12:49

General

  • Target

    Invoiceo.exe

  • Size

    749KB

  • MD5

    8f2489d7ce50e99109af9925818daf2b

  • SHA1

    5481d53e59fda1e0d849b677e15b410ba6f64fbc

  • SHA256

    0013853950647289e952326b93ce46aa3e73db654367ef3c005e29257db31fba

  • SHA512

    e68ac0d33ddecb3712068f94b3a1459f57b26a9e74e970cb7f4ce2f1e64341d72294b2907049e738d115807ef9bd9e622483b64c2e2b26cc228df52a42195268

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.swim-maki.com/csi/

Decoy

crazyonlineboutique.com

nelivo.com

chibimama-blog.com

teachersofnyc.com

rare-snare.com

sunriseatlennox.com

innovate-nation.com

mahowebcam.com

foodbyroyalbites.com

nkm580.com

premiumplanterboxes.com

uspaypausa.com

wto2b.com

evoocb.com

missilenttech.com

adtlive.com

guapeco.com

keepfaithful.com

djayhoward.com

cora-designstj.com

Signatures

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • Formbook Payload 3 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Deletes itself 1 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 14 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1200
    • C:\Users\Admin\AppData\Local\Temp\Invoiceo.exe
      "C:\Users\Admin\AppData\Local\Temp\Invoiceo.exe"
      2⤵
      • Checks BIOS information in registry
      • Maps connected drives based on registry
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1824
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Invoiceo.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1512
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yYxmxiApi.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:896
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yYxmxiApi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5B3A.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:768
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yYxmxiApi.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1716
      • C:\Users\Admin\AppData\Local\Temp\Invoiceo.exe
        "C:\Users\Admin\AppData\Local\Temp\Invoiceo.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:1076
    • C:\Windows\SysWOW64\autoconv.exe
      "C:\Windows\SysWOW64\autoconv.exe"
      2⤵
        PID:1588
      • C:\Windows\SysWOW64\svchost.exe
        "C:\Windows\SysWOW64\svchost.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1356
        • C:\Windows\SysWOW64\cmd.exe
          /c del "C:\Users\Admin\AppData\Local\Temp\Invoiceo.exe"
          3⤵
          • Deletes itself
          PID:1816

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_051c572a-2f4f-4253-a91c-c972a154010a

      MD5

      a70ee38af4bb2b5ed3eeb7cbd1a12fa3

      SHA1

      81dbaeae4b0f9e1adc0a1e3d6d76a12396498ba9

      SHA256

      dd2f41f92f19c3fe031bdf5da68ab06768e26762d0077b290cd0094df1d5d58d

      SHA512

      8c69a5300c7545c5c4b25a0594e6813b6b7a85b5f3ae7fc5464b4074fe6f50b2f49d31cacf19bc20a02bb8e237656f1b9b2a3f6a3953e3a8478ca2adc154e0e3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_10a2719f-ab19-452c-9537-375fecbe5f96

      MD5

      df44874327d79bd75e4264cb8dc01811

      SHA1

      1396b06debed65ea93c24998d244edebd3c0209d

      SHA256

      55de642c5c9e436ec01c57004dae797022442c3245daf7162d19a5585f221181

      SHA512

      95dc9298b8db059bbe746f67e6a7f8515781c7053cc60c01532e47623a996be7e1bd23d1bd8f5f2045adff27454f44930d503c15b695690088841cedbd2a06c3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_14d5f303-8d3e-4659-8f87-0a0ebbb12511

      MD5

      354b8209f647a42e2ce36d8cf326cc92

      SHA1

      98c3117f797df69935f8b09fc9e95accfe3d8346

      SHA256

      feae405d288fdd38438f9d9b54f791f3ce3805f1bb88780da5aca402ad372239

      SHA512

      420be869b58e9a7a2c31f2550ac269df832935692a6431d455a10d9b426781e79d91e30ace2c465633b8a7ff2be1bf49734d8b99a390090dc4b36411d4391ff0

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_1abda922-9e0e-4200-89d0-60796083afcc

      MD5

      be4d72095faf84233ac17b94744f7084

      SHA1

      cc78ce5b9c57573bd214a8f423ee622b00ebb1ec

      SHA256

      b0d72c5c22e57913476ac8fc686a4593f137c6667d5094522c0a0685dabd7adc

      SHA512

      43856e9b1032b8690ceea810c931bed3655e9190414bb220fb6afc136f31b8335e07604dffb28405d4006f266a54cff424c527d29924b1b732c9647a3252b097

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_32b21970-4839-4ac5-a2ad-cc925aecc47c

      MD5

      a725bb9fafcf91f3c6b7861a2bde6db2

      SHA1

      8bb5b83f3cc37ff1e5ea4f02acae38e72364c114

      SHA256

      51651f27f54c7261887037aa1de4eff0a26c6807906dfc34a15cd5a0b58a8431

      SHA512

      1c4b21dd5660bfec8347257bb3da64681b0a97c427790d9ab3484f687dac032bcff0e07876635953697b00cf83e7d37f97c44e0219627fd0533f60ed3024b97e

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_32b21970-4839-4ac5-a2ad-cc925aecc47c

      MD5

      a725bb9fafcf91f3c6b7861a2bde6db2

      SHA1

      8bb5b83f3cc37ff1e5ea4f02acae38e72364c114

      SHA256

      51651f27f54c7261887037aa1de4eff0a26c6807906dfc34a15cd5a0b58a8431

      SHA512

      1c4b21dd5660bfec8347257bb3da64681b0a97c427790d9ab3484f687dac032bcff0e07876635953697b00cf83e7d37f97c44e0219627fd0533f60ed3024b97e

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_3b3b2e74-21c6-44d5-bf69-8b4109eb240b

      MD5

      7f79b990cb5ed648f9e583fe35527aa7

      SHA1

      71b177b48c8bd745ef02c2affad79ca222da7c33

      SHA256

      080ec69d3f2abac629a0bdc314f150ad42a9a1b0a031b1d5c7b5b80051c48683

      SHA512

      20926edf7f0b990da4bd8d7ba91bd8bf7b952b75080f687afa7197a91777604688303d38b4a0a7240b558c23f2e0cd927d3590765109f8be0551f5eb050eafda

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_60554f64-a36e-4439-8748-76f202d7cb75

      MD5

      02ff38ac870de39782aeee04d7b48231

      SHA1

      0390d39fa216c9b0ecdb38238304e518fb2b5095

      SHA256

      fbd66a9baf753db31b8de23f2d51b67f8676687503653103080c45b16f1dc876

      SHA512

      24a1ff76ee42ff7a5ea42843928c4df07b06178f7781cd840e1e086e88735d81506eb67259ff1e6ce5aaa7c5baea03886da265eb7e025ff4dc4c4b5f8cd3e341

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_6ccb18ff-7a22-469e-90e7-ccc861e1432b

      MD5

      b6d38f250ccc9003dd70efd3b778117f

      SHA1

      d5a17c02cac698d4f0a4a9b7d71db2aa19e3f18a

      SHA256

      4de9d7b5ccab7b67ca8efc83084c7ee6e5e872b7216ed4683bc5da950bf41265

      SHA512

      67d8195836b7f280d3f9219fd0f58276342e55d5dfdd8a4c54355030d96685d73f1b2b6da0eb39322ec7c3a1d1c5ef06b52d22646cea30a96f822de1800d31e9

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_7bc5ca8a-50eb-4a28-856a-31595e01418a

      MD5

      597009ea0430a463753e0f5b1d1a249e

      SHA1

      4e38b8bb65ecbd5c9f0d3d8c47f7caba33de6c62

      SHA256

      3fd2a8217a845c43dbc0dc206c28be81d2687aa9ba62019d905aef10cfaec45d

      SHA512

      5d722fa908e64575b2497c60d142e182011a10c6ed33813b3b4796b3147ece1bc96938518b4c8911a1bac3b7560528ebe3e8e754c11015516d335df5d7c6871d

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_ba497937-2e50-4b6d-9dce-a89fd55f6f3d

      MD5

      d89968acfbd0cd60b51df04860d99896

      SHA1

      b3c29916ccb81ce98f95bbf3aa8a73de16298b29

      SHA256

      1020cc7c929cd5a4e68ccb40353ca76f427df363f0d95e456eb79db039bdb2b9

      SHA512

      b0e886cce598371b59131fed1535e220c798691bad93ef9474ba440066f5a6bd77a60966604b7a5ff6298b2e200c9dd0c8f9f04aff208b2af423480ead4e8842

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_bd47eb21-a96b-4ccd-99d7-0d9f3f6c10b6

      MD5

      75a8da7754349b38d64c87c938545b1b

      SHA1

      5c28c257d51f1c1587e29164cc03ea880c21b417

      SHA256

      bf08151c174b5d00c9dbc7907b2c6a01b4be76bfa3afce1e8bd98a04ad833c96

      SHA512

      798797bc74c56c874e9a5fdcb0157c04e37a1b3cce285ef064b01bceef8cec45f11a5198918c6c647220b62883606b5e12e3cca3ea369f3a66e69dea6e15f643

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_c9b427a0-6073-4eb8-9b09-f8e4712d7ab5

      MD5

      5e3c7184a75d42dda1a83606a45001d8

      SHA1

      94ca15637721d88f30eb4b6220b805c5be0360ed

      SHA256

      8278033a65d1ff48be4d86e11f87930d187692f59f8bf2f0a9d170de285afb59

      SHA512

      fae99b6e9b106e0f1c30aa4082b25ae1ad643455c1295c2c16ad534e3e611b9b08492353ffe1af1cfdddc9b2b7c330747a64012c45e62b8f4a4982dcc214e05b

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex

      MD5

      dcbef273155868d4f0749d63fe40be36

      SHA1

      73ab89ffec76206c03414830ee43686f46ec374a

      SHA256

      4383fd332740c710ee419a5a420734868faf5fc892b1925322782a321924200b

      SHA512

      1d5d1aba775db7472db6e9ed1750205a9a466d57d74783261c5231c3ed30b68539932353b939d11cdd544a15532b58c927cf65be3089687f20d3c6d648a52851

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex

      MD5

      aa41ce23d473a43c22b1f85e7d29f293

      SHA1

      916194069331732cd56aebc1ec39852ffc358744

      SHA256

      08c556b8aa0474f61dee02edf7507c48c0f7df1f5645b68a856a764594a0571d

      SHA512

      13ce9935ea8506b0a5868d7b3e6a78b725b2a86fb59bb7a9ffa2463e174570993c4b0f142ea5be7aa26f17203ba54e100faeed56309dc9a24699662f882214f6

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex

      MD5

      c729424ef9d0749ad00bdca32fd6e03c

      SHA1

      85f6fdcb545c71b4ae052a19dadceebc0b56a4d6

      SHA256

      5cd6be12e843719b701cb4c37addc756ac81673aadd76ac770b051d9f29857f7

      SHA512

      024e9160af8e25c1566b5cdc23684ef7de86a01d48f16e93f2736f2ec2c42ff79f503c281a1d98252569df3367a01a52ad967d816772fcb0239329ef5d298606

    • C:\Users\Admin\AppData\Local\Temp\tmp5B3A.tmp

      MD5

      1fb5cb6c4dd0ab8e7a837018d146c322

      SHA1

      ffb35430e7fdcf4beb55fe0d3d193b9f52eec289

      SHA256

      3bf21ef9d33a4dfc26ba71684dd88cb467525bb81eb842248958e082c3dd98fa

      SHA512

      08fc3219689316afc2d0a8c8ea0cab4bd53be04e3bdc0fcb6a55938f4565401b896c6fdda6a973ea6cec3339d11bf34c177586243785c867be82a7fc6390577c

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

      MD5

      3609684fd336a76be9621b9f40e3f07b

      SHA1

      e20685d3a80a42fdc2c0a1e33988fd82195aba94

      SHA256

      15129dac479489a0acc3612c91eef82ae30edb4a801be670efaae382570b69f6

      SHA512

      17c2567e20e050eef5781e613ee656500569bd508ccbbd63e4285d2152c675ff8c55f153cf83dd8da774b690bfb4977da54384a7e4eb638c50f784fe17b37757

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

      MD5

      3609684fd336a76be9621b9f40e3f07b

      SHA1

      e20685d3a80a42fdc2c0a1e33988fd82195aba94

      SHA256

      15129dac479489a0acc3612c91eef82ae30edb4a801be670efaae382570b69f6

      SHA512

      17c2567e20e050eef5781e613ee656500569bd508ccbbd63e4285d2152c675ff8c55f153cf83dd8da774b690bfb4977da54384a7e4eb638c50f784fe17b37757

    • memory/768-73-0x0000000000000000-mapping.dmp

    • memory/896-77-0x00000000048A0000-0x00000000048A1000-memory.dmp

      Filesize

      4KB

    • memory/896-71-0x0000000000000000-mapping.dmp

    • memory/896-78-0x00000000048A2000-0x00000000048A3000-memory.dmp

      Filesize

      4KB

    • memory/1076-82-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB

    • memory/1076-90-0x0000000000930000-0x0000000000C33000-memory.dmp

      Filesize

      3.0MB

    • memory/1076-91-0x0000000000190000-0x00000000001A4000-memory.dmp

      Filesize

      80KB

    • memory/1076-84-0x000000000041EB60-mapping.dmp

    • memory/1200-154-0x0000000002AA0000-0x0000000002B49000-memory.dmp

      Filesize

      676KB

    • memory/1200-92-0x0000000003EA0000-0x0000000003FB4000-memory.dmp

      Filesize

      1.1MB

    • memory/1356-97-0x0000000000880000-0x0000000000888000-memory.dmp

      Filesize

      32KB

    • memory/1356-153-0x00000000006D0000-0x0000000000763000-memory.dmp

      Filesize

      588KB

    • memory/1356-99-0x0000000000890000-0x0000000000B93000-memory.dmp

      Filesize

      3.0MB

    • memory/1356-98-0x0000000000080000-0x00000000000AE000-memory.dmp

      Filesize

      184KB

    • memory/1356-96-0x0000000000000000-mapping.dmp

    • memory/1512-93-0x0000000002550000-0x0000000002551000-memory.dmp

      Filesize

      4KB

    • memory/1512-101-0x0000000005240000-0x0000000005241000-memory.dmp

      Filesize

      4KB

    • memory/1512-65-0x0000000000000000-mapping.dmp

    • memory/1512-66-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

      Filesize

      8KB

    • memory/1512-67-0x0000000002060000-0x0000000002061000-memory.dmp

      Filesize

      4KB

    • memory/1512-68-0x0000000004890000-0x0000000004891000-memory.dmp

      Filesize

      4KB

    • memory/1512-70-0x00000000021D2000-0x00000000021D3000-memory.dmp

      Filesize

      4KB

    • memory/1512-69-0x00000000021D0000-0x00000000021D1000-memory.dmp

      Filesize

      4KB

    • memory/1716-120-0x0000000006310000-0x0000000006311000-memory.dmp

      Filesize

      4KB

    • memory/1716-111-0x0000000005770000-0x0000000005771000-memory.dmp

      Filesize

      4KB

    • memory/1716-127-0x00000000056D0000-0x00000000056D1000-memory.dmp

      Filesize

      4KB

    • memory/1716-80-0x0000000000000000-mapping.dmp

    • memory/1716-142-0x00000000063C0000-0x00000000063C1000-memory.dmp

      Filesize

      4KB

    • memory/1716-143-0x00000000063D0000-0x00000000063D1000-memory.dmp

      Filesize

      4KB

    • memory/1716-89-0x0000000004A12000-0x0000000004A13000-memory.dmp

      Filesize

      4KB

    • memory/1716-113-0x000000007EF30000-0x000000007EF31000-memory.dmp

      Filesize

      4KB

    • memory/1716-112-0x0000000006210000-0x0000000006211000-memory.dmp

      Filesize

      4KB

    • memory/1716-88-0x0000000004A10000-0x0000000004A11000-memory.dmp

      Filesize

      4KB

    • memory/1716-106-0x0000000005710000-0x0000000005711000-memory.dmp

      Filesize

      4KB

    • memory/1816-100-0x0000000000000000-mapping.dmp

    • memory/1824-64-0x0000000000EC0000-0x0000000000F23000-memory.dmp

      Filesize

      396KB

    • memory/1824-63-0x00000000050C0000-0x000000000516B000-memory.dmp

      Filesize

      684KB

    • memory/1824-62-0x0000000000550000-0x000000000055E000-memory.dmp

      Filesize

      56KB

    • memory/1824-61-0x00000000051E0000-0x00000000051E1000-memory.dmp

      Filesize

      4KB

    • memory/1824-59-0x0000000001210000-0x0000000001211000-memory.dmp

      Filesize

      4KB