Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    26-11-2020 08:47

General

  • Target

    Order 51897.exe

  • Size

    142KB

  • MD5

    a91e329eddf0be4953e2a6e8900f0c0b

  • SHA1

    b3883a90173d28154794ac430fec790716bcc0cb

  • SHA256

    52d815927044f076244cd3c57b5ac83b3354750b9e4a062471c9e6ed87e2adcc

  • SHA512

    9aa58e2886efc37a26129ac123a4604a31c4c46f29c10d875acd472960f04148aaa0d2bc1c21c1c731d9b704945b6dd7b31052b083118bdfd2cba51132eb3fce

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.gayaceramic.com
  • Port:
    587
  • Username:
    info@gayaceramic.com
  • Password:
    2019gaya

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Windows security bypass 2 TTPs
  • AgentTesla Payload 4 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.

  • 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
  • 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 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Order 51897.exe
    "C:\Users\Admin\AppData\Local\Temp\Order 51897.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks BIOS information in registry
    • Drops startup file
    • Windows security modification
    • Adds Run key to start application
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:308
    • C:\Windows\SysWOW64\timeout.exe
      timeout 4
      2⤵
      • Delays execution with timeout.exe
      PID:1216
    • 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\Order 51897.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1616
    • 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\Order 51897.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:432
    • 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\Order 51897.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:332
    • 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\Order 51897.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1476
    • C:\Users\Admin\AppData\Local\Temp\Order 51897.exe
      "C:\Users\Admin\AppData\Local\Temp\Order 51897.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1640

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

5
T1112

Disabling Security Tools

3
T1089

Virtualization/Sandbox Evasion

2
T1497

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_03bfaf74-c48a-406b-812c-2684df821d22
    MD5

    597009ea0430a463753e0f5b1d1a249e

    SHA1

    4e38b8bb65ecbd5c9f0d3d8c47f7caba33de6c62

    SHA256

    3fd2a8217a845c43dbc0dc206c28be81d2687aa9ba62019d905aef10cfaec45d

    SHA512

    5d722fa908e64575b2497c60d142e182011a10c6ed33813b3b4796b3147ece1bc96938518b4c8911a1bac3b7560528ebe3e8e754c11015516d335df5d7c6871d

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_05256018-9cc5-4a61-8b1f-8935bf0e065b
    MD5

    354b8209f647a42e2ce36d8cf326cc92

    SHA1

    98c3117f797df69935f8b09fc9e95accfe3d8346

    SHA256

    feae405d288fdd38438f9d9b54f791f3ce3805f1bb88780da5aca402ad372239

    SHA512

    420be869b58e9a7a2c31f2550ac269df832935692a6431d455a10d9b426781e79d91e30ace2c465633b8a7ff2be1bf49734d8b99a390090dc4b36411d4391ff0

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_1b0b2f5a-4fa9-4284-9780-9a1da7b14a47
    MD5

    02ff38ac870de39782aeee04d7b48231

    SHA1

    0390d39fa216c9b0ecdb38238304e518fb2b5095

    SHA256

    fbd66a9baf753db31b8de23f2d51b67f8676687503653103080c45b16f1dc876

    SHA512

    24a1ff76ee42ff7a5ea42843928c4df07b06178f7781cd840e1e086e88735d81506eb67259ff1e6ce5aaa7c5baea03886da265eb7e025ff4dc4c4b5f8cd3e341

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_70fd8ce2-0a89-419c-ac61-d1034b756946
    MD5

    d89968acfbd0cd60b51df04860d99896

    SHA1

    b3c29916ccb81ce98f95bbf3aa8a73de16298b29

    SHA256

    1020cc7c929cd5a4e68ccb40353ca76f427df363f0d95e456eb79db039bdb2b9

    SHA512

    b0e886cce598371b59131fed1535e220c798691bad93ef9474ba440066f5a6bd77a60966604b7a5ff6298b2e200c9dd0c8f9f04aff208b2af423480ead4e8842

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_85c7c16f-de6b-4cda-bf8a-ede9c5910d3d
    MD5

    df44874327d79bd75e4264cb8dc01811

    SHA1

    1396b06debed65ea93c24998d244edebd3c0209d

    SHA256

    55de642c5c9e436ec01c57004dae797022442c3245daf7162d19a5585f221181

    SHA512

    95dc9298b8db059bbe746f67e6a7f8515781c7053cc60c01532e47623a996be7e1bd23d1bd8f5f2045adff27454f44930d503c15b695690088841cedbd2a06c3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_9568998d-9d05-48fc-8ef7-46f281f2dfdd
    MD5

    a70ee38af4bb2b5ed3eeb7cbd1a12fa3

    SHA1

    81dbaeae4b0f9e1adc0a1e3d6d76a12396498ba9

    SHA256

    dd2f41f92f19c3fe031bdf5da68ab06768e26762d0077b290cd0094df1d5d58d

    SHA512

    8c69a5300c7545c5c4b25a0594e6813b6b7a85b5f3ae7fc5464b4074fe6f50b2f49d31cacf19bc20a02bb8e237656f1b9b2a3f6a3953e3a8478ca2adc154e0e3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_9eaceecd-4d14-4add-b9a5-e9236465e849
    MD5

    7f79b990cb5ed648f9e583fe35527aa7

    SHA1

    71b177b48c8bd745ef02c2affad79ca222da7c33

    SHA256

    080ec69d3f2abac629a0bdc314f150ad42a9a1b0a031b1d5c7b5b80051c48683

    SHA512

    20926edf7f0b990da4bd8d7ba91bd8bf7b952b75080f687afa7197a91777604688303d38b4a0a7240b558c23f2e0cd927d3590765109f8be0551f5eb050eafda

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_a02197da-f9c8-43e6-9ff1-846e01d2d404
    MD5

    75a8da7754349b38d64c87c938545b1b

    SHA1

    5c28c257d51f1c1587e29164cc03ea880c21b417

    SHA256

    bf08151c174b5d00c9dbc7907b2c6a01b4be76bfa3afce1e8bd98a04ad833c96

    SHA512

    798797bc74c56c874e9a5fdcb0157c04e37a1b3cce285ef064b01bceef8cec45f11a5198918c6c647220b62883606b5e12e3cca3ea369f3a66e69dea6e15f643

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_b771b377-145f-49e9-bf64-45e69646f7b9
    MD5

    5e3c7184a75d42dda1a83606a45001d8

    SHA1

    94ca15637721d88f30eb4b6220b805c5be0360ed

    SHA256

    8278033a65d1ff48be4d86e11f87930d187692f59f8bf2f0a9d170de285afb59

    SHA512

    fae99b6e9b106e0f1c30aa4082b25ae1ad643455c1295c2c16ad534e3e611b9b08492353ffe1af1cfdddc9b2b7c330747a64012c45e62b8f4a4982dcc214e05b

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_c356f451-13b2-41fc-8d4c-54a293efa6e1
    MD5

    b6d38f250ccc9003dd70efd3b778117f

    SHA1

    d5a17c02cac698d4f0a4a9b7d71db2aa19e3f18a

    SHA256

    4de9d7b5ccab7b67ca8efc83084c7ee6e5e872b7216ed4683bc5da950bf41265

    SHA512

    67d8195836b7f280d3f9219fd0f58276342e55d5dfdd8a4c54355030d96685d73f1b2b6da0eb39322ec7c3a1d1c5ef06b52d22646cea30a96f822de1800d31e9

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_ce569c42-07bf-442e-b377-8e9695c9383c
    MD5

    be4d72095faf84233ac17b94744f7084

    SHA1

    cc78ce5b9c57573bd214a8f423ee622b00ebb1ec

    SHA256

    b0d72c5c22e57913476ac8fc686a4593f137c6667d5094522c0a0685dabd7adc

    SHA512

    43856e9b1032b8690ceea810c931bed3655e9190414bb220fb6afc136f31b8335e07604dffb28405d4006f266a54cff424c527d29924b1b732c9647a3252b097

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_dadf780e-0f00-49bb-86e1-35585efd8a97
    MD5

    a725bb9fafcf91f3c6b7861a2bde6db2

    SHA1

    8bb5b83f3cc37ff1e5ea4f02acae38e72364c114

    SHA256

    51651f27f54c7261887037aa1de4eff0a26c6807906dfc34a15cd5a0b58a8431

    SHA512

    1c4b21dd5660bfec8347257bb3da64681b0a97c427790d9ab3484f687dac032bcff0e07876635953697b00cf83e7d37f97c44e0219627fd0533f60ed3024b97e

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_dadf780e-0f00-49bb-86e1-35585efd8a97
    MD5

    a725bb9fafcf91f3c6b7861a2bde6db2

    SHA1

    8bb5b83f3cc37ff1e5ea4f02acae38e72364c114

    SHA256

    51651f27f54c7261887037aa1de4eff0a26c6807906dfc34a15cd5a0b58a8431

    SHA512

    1c4b21dd5660bfec8347257bb3da64681b0a97c427790d9ab3484f687dac032bcff0e07876635953697b00cf83e7d37f97c44e0219627fd0533f60ed3024b97e

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_dadf780e-0f00-49bb-86e1-35585efd8a97
    MD5

    a725bb9fafcf91f3c6b7861a2bde6db2

    SHA1

    8bb5b83f3cc37ff1e5ea4f02acae38e72364c114

    SHA256

    51651f27f54c7261887037aa1de4eff0a26c6807906dfc34a15cd5a0b58a8431

    SHA512

    1c4b21dd5660bfec8347257bb3da64681b0a97c427790d9ab3484f687dac032bcff0e07876635953697b00cf83e7d37f97c44e0219627fd0533f60ed3024b97e

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

    9fbfea43e24d1d377f5a90b5ae7fb12d

    SHA1

    de9499ca54947131be9f4afc2f0e249d9e449065

    SHA256

    8ed158665a65215d9ce30cb96a91a586c4b873cdea765da0227b7be3810b5ee6

    SHA512

    bca83274e2243d3744cf876bed4d8cbfc97361bdff8646ccd2a9adf12792aa36dd66c1d0720f0b0e0962fb058d00609af6249f895c9658fbcb4417817e380891

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

    5e2bd31f201a1828216b61451a072ca3

    SHA1

    e000a10c9b4a89b0c046a367d9293e89bf9334a7

    SHA256

    bc32f42a891396c26f9330731bda6aa35393dbbe1fa61530196c74a35d2d792c

    SHA512

    343bb976e8a678447e71fd16fd5292cb44ad005c97e599de4ddb4372c7ce4b879bbe9a0a5ba5c95c8c471b1f233ba1c7a5522fe99ac1940478a6ab24569f0139

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

    0660be38c80e45a041333a1c70f6e71f

    SHA1

    0527e3241f7cb1d4a179277e25ed501239274060

    SHA256

    c203cdff8419d27d83bbafd747e6070cfd8a97aa671b8a40d0213943e81965ba

    SHA512

    b250215734794233bd8db7b25c9e93722e79daba1635f161a5dc08b77d25e33290b46d0f0fac4fe6200f3d41e7e88a015cc757d2249001aa0736358eaac4505e

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

    dbaba46d8b439035535e0ddc6346d4e7

    SHA1

    2d1ae22958524120d6e94bcf9a56418e5bfdea23

    SHA256

    5ad58e0766b135a1d9080dc35216faea428fd903dc0c151ca3674b6af7f858c8

    SHA512

    327529a71d586b7dd404b2c9fb3a3404e179255ffca497e08bc4843c317a26b43ce183c03d2189c329d3754e037c7f6fa3806079201b62616d57de5dcce7d745

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

    8064a1ac312cd17954201b7b19751633

    SHA1

    418268e3fb0facebdfa784de74fc87a08e71f183

    SHA256

    da8678cf7aeed65cc43c53e2cf3833a35aa8ee5dff7217c6348497a87d173e17

    SHA512

    2b1607960b8945e41e3eceb55edcc5aae2bfb23bdaa7456cc112ca6e46c1183e9c70c2afd0e9b689146312b2bd5ccf291e2681fa5c6bb8fbded49e5ca494a395

  • memory/308-0-0x00000000740C0000-0x00000000747AE000-memory.dmp
    Filesize

    6.9MB

  • memory/308-3-0x00000000057E0000-0x00000000058EC000-memory.dmp
    Filesize

    1.0MB

  • memory/308-1-0x0000000000300000-0x0000000000301000-memory.dmp
    Filesize

    4KB

  • memory/332-11-0x00000000740C0000-0x00000000747AE000-memory.dmp
    Filesize

    6.9MB

  • memory/332-6-0x0000000000000000-mapping.dmp
  • memory/432-5-0x0000000000000000-mapping.dmp
  • memory/432-10-0x00000000740C0000-0x00000000747AE000-memory.dmp
    Filesize

    6.9MB

  • memory/1216-2-0x0000000000000000-mapping.dmp
  • memory/1476-17-0x0000000004940000-0x0000000004941000-memory.dmp
    Filesize

    4KB

  • memory/1476-32-0x0000000005240000-0x0000000005241000-memory.dmp
    Filesize

    4KB

  • memory/1476-7-0x0000000000000000-mapping.dmp
  • memory/1476-9-0x00000000740C0000-0x00000000747AE000-memory.dmp
    Filesize

    6.9MB

  • memory/1476-13-0x0000000001EF0000-0x0000000001EF1000-memory.dmp
    Filesize

    4KB

  • memory/1616-74-0x0000000006310000-0x0000000006311000-memory.dmp
    Filesize

    4KB

  • memory/1616-12-0x00000000740C0000-0x00000000747AE000-memory.dmp
    Filesize

    6.9MB

  • memory/1616-73-0x0000000006300000-0x0000000006301000-memory.dmp
    Filesize

    4KB

  • memory/1616-43-0x0000000006040000-0x0000000006041000-memory.dmp
    Filesize

    4KB

  • memory/1616-21-0x0000000002580000-0x0000000002581000-memory.dmp
    Filesize

    4KB

  • memory/1616-58-0x00000000061E0000-0x00000000061E1000-memory.dmp
    Filesize

    4KB

  • memory/1616-44-0x00000000060A0000-0x00000000060A1000-memory.dmp
    Filesize

    4KB

  • memory/1616-4-0x0000000000000000-mapping.dmp
  • memory/1616-51-0x0000000006280000-0x0000000006281000-memory.dmp
    Filesize

    4KB

  • memory/1616-38-0x0000000005650000-0x0000000005651000-memory.dmp
    Filesize

    4KB

  • memory/1640-29-0x00000000740C0000-0x00000000747AE000-memory.dmp
    Filesize

    6.9MB

  • memory/1640-28-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1640-27-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1640-25-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1640-26-0x000000000043766E-mapping.dmp