Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    11-01-2021 10:07

General

  • Target

    imagnpdf0440690129912239vistaprevia02052329503adobeplayer02304293.exe

  • Size

    1.8MB

  • MD5

    5b2c784d7de1aeb2bbfcee269f138e00

  • SHA1

    9948f3bf9aa8c548139c2b6c969cb90b9ace4c3a

  • SHA256

    cb8642988cadd0d704adcd1025d24a0604416c9fbd92d9b74597e861c0a15d22

  • SHA512

    0eaacc0d76a93db04a0ed55878fa90d30b48debe23ff0a38dcc223d1daada1f53da558b1bfec052af04e9fdffcf0b979fa18309d2dd1954ff934f6491ed4e1cb

Malware Config

Extracted

Family

remcos

C2

cincuentayseisrem.duckdns.org:1012

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Windows security bypass 2 TTPs
  • Drops startup file 2 IoCs
  • Windows security modification 2 TTPs 9 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 14 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Delays execution with timeout.exe 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 58 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\imagnpdf0440690129912239vistaprevia02052329503adobeplayer02304293.exe
    "C:\Users\Admin\AppData\Local\Temp\imagnpdf0440690129912239vistaprevia02052329503adobeplayer02304293.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops startup file
    • Windows security modification
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1068
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\imagnpdf0440690129912239vistaprevia02052329503adobeplayer02304293.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:788
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\imagnpdf0440690129912239vistaprevia02052329503adobeplayer02304293.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2040
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\imagnpdf0440690129912239vistaprevia02052329503adobeplayer02304293.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1732
    • 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\imagnpdf0440690129912239vistaprevia02052329503adobeplayer02304293.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1692
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1584
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:292
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:760
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:556
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1772
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:952
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
      2⤵
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:600
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1068 -s 1976
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1976

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_3bf4f350-86fe-486e-8b87-41ab96d0ad9c
    MD5

    b6d38f250ccc9003dd70efd3b778117f

    SHA1

    d5a17c02cac698d4f0a4a9b7d71db2aa19e3f18a

    SHA256

    4de9d7b5ccab7b67ca8efc83084c7ee6e5e872b7216ed4683bc5da950bf41265

    SHA512

    67d8195836b7f280d3f9219fd0f58276342e55d5dfdd8a4c54355030d96685d73f1b2b6da0eb39322ec7c3a1d1c5ef06b52d22646cea30a96f822de1800d31e9

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_4408bb97-19ee-4815-b02c-5a0939dddad8
    MD5

    df44874327d79bd75e4264cb8dc01811

    SHA1

    1396b06debed65ea93c24998d244edebd3c0209d

    SHA256

    55de642c5c9e436ec01c57004dae797022442c3245daf7162d19a5585f221181

    SHA512

    95dc9298b8db059bbe746f67e6a7f8515781c7053cc60c01532e47623a996be7e1bd23d1bd8f5f2045adff27454f44930d503c15b695690088841cedbd2a06c3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_644b5728-e9b5-45ab-9104-7136ec814422
    MD5

    be4d72095faf84233ac17b94744f7084

    SHA1

    cc78ce5b9c57573bd214a8f423ee622b00ebb1ec

    SHA256

    b0d72c5c22e57913476ac8fc686a4593f137c6667d5094522c0a0685dabd7adc

    SHA512

    43856e9b1032b8690ceea810c931bed3655e9190414bb220fb6afc136f31b8335e07604dffb28405d4006f266a54cff424c527d29924b1b732c9647a3252b097

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_6532a425-51ae-4577-837f-c6e09d9fcfcf
    MD5

    75a8da7754349b38d64c87c938545b1b

    SHA1

    5c28c257d51f1c1587e29164cc03ea880c21b417

    SHA256

    bf08151c174b5d00c9dbc7907b2c6a01b4be76bfa3afce1e8bd98a04ad833c96

    SHA512

    798797bc74c56c874e9a5fdcb0157c04e37a1b3cce285ef064b01bceef8cec45f11a5198918c6c647220b62883606b5e12e3cca3ea369f3a66e69dea6e15f643

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_69670b6c-d49a-42a9-993a-10d18807f7c6
    MD5

    5e3c7184a75d42dda1a83606a45001d8

    SHA1

    94ca15637721d88f30eb4b6220b805c5be0360ed

    SHA256

    8278033a65d1ff48be4d86e11f87930d187692f59f8bf2f0a9d170de285afb59

    SHA512

    fae99b6e9b106e0f1c30aa4082b25ae1ad643455c1295c2c16ad534e3e611b9b08492353ffe1af1cfdddc9b2b7c330747a64012c45e62b8f4a4982dcc214e05b

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_7f45a795-9723-4ae3-b7ea-79ea7f92b87a
    MD5

    a725bb9fafcf91f3c6b7861a2bde6db2

    SHA1

    8bb5b83f3cc37ff1e5ea4f02acae38e72364c114

    SHA256

    51651f27f54c7261887037aa1de4eff0a26c6807906dfc34a15cd5a0b58a8431

    SHA512

    1c4b21dd5660bfec8347257bb3da64681b0a97c427790d9ab3484f687dac032bcff0e07876635953697b00cf83e7d37f97c44e0219627fd0533f60ed3024b97e

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_7f45a795-9723-4ae3-b7ea-79ea7f92b87a
    MD5

    a725bb9fafcf91f3c6b7861a2bde6db2

    SHA1

    8bb5b83f3cc37ff1e5ea4f02acae38e72364c114

    SHA256

    51651f27f54c7261887037aa1de4eff0a26c6807906dfc34a15cd5a0b58a8431

    SHA512

    1c4b21dd5660bfec8347257bb3da64681b0a97c427790d9ab3484f687dac032bcff0e07876635953697b00cf83e7d37f97c44e0219627fd0533f60ed3024b97e

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_7f45a795-9723-4ae3-b7ea-79ea7f92b87a
    MD5

    a725bb9fafcf91f3c6b7861a2bde6db2

    SHA1

    8bb5b83f3cc37ff1e5ea4f02acae38e72364c114

    SHA256

    51651f27f54c7261887037aa1de4eff0a26c6807906dfc34a15cd5a0b58a8431

    SHA512

    1c4b21dd5660bfec8347257bb3da64681b0a97c427790d9ab3484f687dac032bcff0e07876635953697b00cf83e7d37f97c44e0219627fd0533f60ed3024b97e

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_aacd219d-c7ba-43ff-a67c-9ddc2f632d63
    MD5

    597009ea0430a463753e0f5b1d1a249e

    SHA1

    4e38b8bb65ecbd5c9f0d3d8c47f7caba33de6c62

    SHA256

    3fd2a8217a845c43dbc0dc206c28be81d2687aa9ba62019d905aef10cfaec45d

    SHA512

    5d722fa908e64575b2497c60d142e182011a10c6ed33813b3b4796b3147ece1bc96938518b4c8911a1bac3b7560528ebe3e8e754c11015516d335df5d7c6871d

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_c713dad4-c36b-47c8-81c8-9659e9f7eee4
    MD5

    d89968acfbd0cd60b51df04860d99896

    SHA1

    b3c29916ccb81ce98f95bbf3aa8a73de16298b29

    SHA256

    1020cc7c929cd5a4e68ccb40353ca76f427df363f0d95e456eb79db039bdb2b9

    SHA512

    b0e886cce598371b59131fed1535e220c798691bad93ef9474ba440066f5a6bd77a60966604b7a5ff6298b2e200c9dd0c8f9f04aff208b2af423480ead4e8842

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_cc299466-e411-4965-8a83-06c8d7bddb03
    MD5

    a70ee38af4bb2b5ed3eeb7cbd1a12fa3

    SHA1

    81dbaeae4b0f9e1adc0a1e3d6d76a12396498ba9

    SHA256

    dd2f41f92f19c3fe031bdf5da68ab06768e26762d0077b290cd0094df1d5d58d

    SHA512

    8c69a5300c7545c5c4b25a0594e6813b6b7a85b5f3ae7fc5464b4074fe6f50b2f49d31cacf19bc20a02bb8e237656f1b9b2a3f6a3953e3a8478ca2adc154e0e3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_d6b8aa2c-7e46-42b0-a041-09456aad1e96
    MD5

    7f79b990cb5ed648f9e583fe35527aa7

    SHA1

    71b177b48c8bd745ef02c2affad79ca222da7c33

    SHA256

    080ec69d3f2abac629a0bdc314f150ad42a9a1b0a031b1d5c7b5b80051c48683

    SHA512

    20926edf7f0b990da4bd8d7ba91bd8bf7b952b75080f687afa7197a91777604688303d38b4a0a7240b558c23f2e0cd927d3590765109f8be0551f5eb050eafda

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_e9f9468a-8cbd-4472-b808-e8b3772f4134
    MD5

    02ff38ac870de39782aeee04d7b48231

    SHA1

    0390d39fa216c9b0ecdb38238304e518fb2b5095

    SHA256

    fbd66a9baf753db31b8de23f2d51b67f8676687503653103080c45b16f1dc876

    SHA512

    24a1ff76ee42ff7a5ea42843928c4df07b06178f7781cd840e1e086e88735d81506eb67259ff1e6ce5aaa7c5baea03886da265eb7e025ff4dc4c4b5f8cd3e341

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_ec99464c-e72c-44a5-9c8d-3e5e30263ffd
    MD5

    354b8209f647a42e2ce36d8cf326cc92

    SHA1

    98c3117f797df69935f8b09fc9e95accfe3d8346

    SHA256

    feae405d288fdd38438f9d9b54f791f3ce3805f1bb88780da5aca402ad372239

    SHA512

    420be869b58e9a7a2c31f2550ac269df832935692a6431d455a10d9b426781e79d91e30ace2c465633b8a7ff2be1bf49734d8b99a390090dc4b36411d4391ff0

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex
    MD5

    42559a26255caf7c038184647132a8f5

    SHA1

    7ae5d645e05c942335f2b6272e570a960a76629b

    SHA256

    fa06b73bbb3fa7090de72f5248aeaa0b9d4ef89c0a86660a2fbc2ebd2d682f40

    SHA512

    8b1a7d0a44aaad8d9b3c0be0cf82696c8257bcfd427e512d6cdc17f6996f5c0c838dccd38ff3b667b5e8a679db1fd6fc3226bd94901acb83bcd2b26c7ec89c34

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex
    MD5

    ae703fd92300de1470522a4813859e0b

    SHA1

    6f1109bcabe05fea48e8d29c2665817e8ef19567

    SHA256

    f3281d548f91833d417e0900689c3f2bef77c7fa93f75b66e5b2e79e6e471c29

    SHA512

    9b8b9f98b7c8df2414beac8bb31148043a91b58ce4bdbc6cf24bcc03e04a602a17b6f1ecdad3402a068f64f64bc75686df05be5c1fc54824a48b2f6b4e9d418d

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex
    MD5

    b83c9f9bd949261bf1945b43e31641a8

    SHA1

    7a1e221ee1049889446aedd3cfc9520ae34f6149

    SHA256

    7fbd14fcd9720e8496350a6c1ae865c7581a841694331daa751a386b809279f3

    SHA512

    e9b5d6f144e3f0c00629760a80d5ee8c346cff7e2305533dcfc66084228583591f26645b3f6a0dfad181af95622defd2fd2735c02c45881bae6dc9199882aed7

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex
    MD5

    b83c9f9bd949261bf1945b43e31641a8

    SHA1

    7a1e221ee1049889446aedd3cfc9520ae34f6149

    SHA256

    7fbd14fcd9720e8496350a6c1ae865c7581a841694331daa751a386b809279f3

    SHA512

    e9b5d6f144e3f0c00629760a80d5ee8c346cff7e2305533dcfc66084228583591f26645b3f6a0dfad181af95622defd2fd2735c02c45881bae6dc9199882aed7

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
    MD5

    434cd326d2b1962d81511e5918ec09ef

    SHA1

    edf56d60e1bb91f314ff9188b38fba2eff9deb22

    SHA256

    40ca2576136e5e67d460051c1ca6ab5393546c543aba93dac24a4703a7fbbf08

    SHA512

    65d5f2991f492183a1ddabe743a50c055bcf1332a727c39ff643a955c24579dcacf6096b71dbab62c9ed9197d55d2daa6a3fda2bda9504817c35dcad83bd0206

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
    MD5

    434cd326d2b1962d81511e5918ec09ef

    SHA1

    edf56d60e1bb91f314ff9188b38fba2eff9deb22

    SHA256

    40ca2576136e5e67d460051c1ca6ab5393546c543aba93dac24a4703a7fbbf08

    SHA512

    65d5f2991f492183a1ddabe743a50c055bcf1332a727c39ff643a955c24579dcacf6096b71dbab62c9ed9197d55d2daa6a3fda2bda9504817c35dcad83bd0206

  • memory/292-41-0x0000000000000000-mapping.dmp
  • memory/556-76-0x0000000000000000-mapping.dmp
  • memory/600-88-0x0000000000400000-0x0000000000421000-memory.dmp
    Filesize

    132KB

  • memory/600-89-0x0000000000413A84-mapping.dmp
  • memory/600-90-0x0000000000400000-0x0000000000421000-memory.dmp
    Filesize

    132KB

  • memory/760-73-0x0000000000000000-mapping.dmp
  • memory/788-6-0x0000000000000000-mapping.dmp
  • memory/788-39-0x00000000056B0000-0x00000000056B1000-memory.dmp
    Filesize

    4KB

  • memory/788-13-0x0000000000BE0000-0x0000000000BE1000-memory.dmp
    Filesize

    4KB

  • memory/788-56-0x00000000055D0000-0x00000000055D1000-memory.dmp
    Filesize

    4KB

  • memory/788-71-0x00000000062C0000-0x00000000062C1000-memory.dmp
    Filesize

    4KB

  • memory/788-72-0x00000000062D0000-0x00000000062D1000-memory.dmp
    Filesize

    4KB

  • memory/788-10-0x0000000074EE0000-0x00000000755CE000-memory.dmp
    Filesize

    6.9MB

  • memory/788-49-0x00000000058B0000-0x00000000058B1000-memory.dmp
    Filesize

    4KB

  • memory/788-34-0x0000000005610000-0x0000000005611000-memory.dmp
    Filesize

    4KB

  • memory/788-42-0x0000000005750000-0x0000000005751000-memory.dmp
    Filesize

    4KB

  • memory/952-87-0x0000000000000000-mapping.dmp
  • memory/1068-2-0x0000000074EE0000-0x00000000755CE000-memory.dmp
    Filesize

    6.9MB

  • memory/1068-5-0x0000000001E40000-0x0000000001E7E000-memory.dmp
    Filesize

    248KB

  • memory/1068-3-0x0000000000050000-0x0000000000051000-memory.dmp
    Filesize

    4KB

  • memory/1584-40-0x0000000000000000-mapping.dmp
  • memory/1692-9-0x0000000000000000-mapping.dmp
  • memory/1692-18-0x0000000074EE0000-0x00000000755CE000-memory.dmp
    Filesize

    6.9MB

  • memory/1732-24-0x0000000002190000-0x0000000002191000-memory.dmp
    Filesize

    4KB

  • memory/1732-8-0x0000000000000000-mapping.dmp
  • memory/1732-15-0x0000000074EE0000-0x00000000755CE000-memory.dmp
    Filesize

    6.9MB

  • memory/1772-86-0x0000000000000000-mapping.dmp
  • memory/1976-91-0x0000000000000000-mapping.dmp
  • memory/1976-92-0x0000000001E40000-0x0000000001E51000-memory.dmp
    Filesize

    68KB

  • memory/2040-28-0x00000000026D0000-0x00000000026D1000-memory.dmp
    Filesize

    4KB

  • memory/2040-17-0x0000000004990000-0x0000000004991000-memory.dmp
    Filesize

    4KB

  • memory/2040-7-0x0000000000000000-mapping.dmp
  • memory/2040-12-0x0000000074EE0000-0x00000000755CE000-memory.dmp
    Filesize

    6.9MB