Analysis

  • max time kernel
    150s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    06-10-2023 16:09

General

  • Target

    NEAS.dfa1030b49da1997953542e47d394a5e3327ce225bc779a20a93f3f1ea7502f4_JC.exe

  • Size

    363KB

  • MD5

    dccb60fb185d8098f3844b5d5777a045

  • SHA1

    2b8e3b905310d713a443b844e110dbb71359b09c

  • SHA256

    dfa1030b49da1997953542e47d394a5e3327ce225bc779a20a93f3f1ea7502f4

  • SHA512

    edb8ee6fda1764a2958e9b932828e579c2408cdd29919331f461a02107d01be48d3e03f51329410630c614d933302b4df380efe38616cdaa7754cd267d566639

  • SSDEEP

    3072:wwH52YRs4UEbwIeG+p1C3nIsP3ozz6rRZ+pr4/lGW/o2xNbr7ZwVRU/qIUgd1Uvc:tEYC4UmwIeG/I+3Ks/UC7ZwV8Pyo

Malware Config

Extracted

Family

smokeloader

Botnet

0024

Extracted

Family

smokeloader

Version

2022

C2

https://utah-saints.com/search.php

https://atlanta-newspaper.com/search.php

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Kills process with taskkill 1 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.dfa1030b49da1997953542e47d394a5e3327ce225bc779a20a93f3f1ea7502f4_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.dfa1030b49da1997953542e47d394a5e3327ce225bc779a20a93f3f1ea7502f4_JC.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:2224
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\7399932605.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1164
      • C:\Users\Admin\AppData\Local\Temp\7399932605.exe
        "C:\Users\Admin\AppData\Local\Temp\7399932605.exe"
        3⤵
        • Executes dropped EXE
        • Checks SCSI registry key(s)
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        PID:548
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "NEAS.dfa1030b49da1997953542e47d394a5e3327ce225bc779a20a93f3f1ea7502f4_JC.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\NEAS.dfa1030b49da1997953542e47d394a5e3327ce225bc779a20a93f3f1ea7502f4_JC.exe" & exit
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:2732
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "NEAS.dfa1030b49da1997953542e47d394a5e3327ce225bc779a20a93f3f1ea7502f4_JC.exe" /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2824
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {2682D762-B5BE-4D1F-8A5E-8D3E42B39B27} S-1-5-21-86725733-3001458681-3405935542-1000:ZWKQHIWB\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1624
    • C:\Users\Admin\AppData\Roaming\eafbjjs
      C:\Users\Admin\AppData\Roaming\eafbjjs
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:2540

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    304B

    MD5

    21cea435ce98bb98416a18067b8c2549

    SHA1

    83640cc687bbc6cc2da5ec332edff90fe5b20c63

    SHA256

    d31e8bae7496f92aade3ee9c0e2047f64be7708aef72412ae491e9fd7e080e57

    SHA512

    0e1c2b598bd9fb3766b8646d10e05f988a8c0b997d9562cc0d14039ae3c4528f2bc3d44fa1fee1ea6ee5aab17da4da08b71364b5d7deec83cebdf9d7878240e5

  • C:\Users\Admin\AppData\Local\Temp\7399932605.exe

    Filesize

    274KB

    MD5

    ea6e8732d13f02bcb8cde4af291590a5

    SHA1

    49dfe71339cf21b1f749859f27ee6b4c29378caa

    SHA256

    4ccc468fd4c83387a765113d8006dcc8ee047813c788f2ac41534d5158eaae22

    SHA512

    fb3e837cdac980c4265321d5074316992f7c7ebeece9cac02f562d65639c65d0344020dea7bff83e79e32878569486218a5268b338dcfe2f2f5508a249bb206c

  • C:\Users\Admin\AppData\Local\Temp\7399932605.exe

    Filesize

    274KB

    MD5

    ea6e8732d13f02bcb8cde4af291590a5

    SHA1

    49dfe71339cf21b1f749859f27ee6b4c29378caa

    SHA256

    4ccc468fd4c83387a765113d8006dcc8ee047813c788f2ac41534d5158eaae22

    SHA512

    fb3e837cdac980c4265321d5074316992f7c7ebeece9cac02f562d65639c65d0344020dea7bff83e79e32878569486218a5268b338dcfe2f2f5508a249bb206c

  • C:\Users\Admin\AppData\Local\Temp\Cab827B.tmp

    Filesize

    61KB

    MD5

    f3441b8572aae8801c04f3060b550443

    SHA1

    4ef0a35436125d6821831ef36c28ffaf196cda15

    SHA256

    6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

    SHA512

    5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

  • C:\Users\Admin\AppData\Local\Temp\Tar8368.tmp

    Filesize

    163KB

    MD5

    9441737383d21192400eca82fda910ec

    SHA1

    725e0d606a4fc9ba44aa8ffde65bed15e65367e4

    SHA256

    bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

    SHA512

    7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

  • C:\Users\Admin\AppData\Roaming\eafbjjs

    Filesize

    274KB

    MD5

    ea6e8732d13f02bcb8cde4af291590a5

    SHA1

    49dfe71339cf21b1f749859f27ee6b4c29378caa

    SHA256

    4ccc468fd4c83387a765113d8006dcc8ee047813c788f2ac41534d5158eaae22

    SHA512

    fb3e837cdac980c4265321d5074316992f7c7ebeece9cac02f562d65639c65d0344020dea7bff83e79e32878569486218a5268b338dcfe2f2f5508a249bb206c

  • C:\Users\Admin\AppData\Roaming\eafbjjs

    Filesize

    274KB

    MD5

    ea6e8732d13f02bcb8cde4af291590a5

    SHA1

    49dfe71339cf21b1f749859f27ee6b4c29378caa

    SHA256

    4ccc468fd4c83387a765113d8006dcc8ee047813c788f2ac41534d5158eaae22

    SHA512

    fb3e837cdac980c4265321d5074316992f7c7ebeece9cac02f562d65639c65d0344020dea7bff83e79e32878569486218a5268b338dcfe2f2f5508a249bb206c

  • C:\Users\Admin\AppData\Roaming\eafbjjs

    Filesize

    274KB

    MD5

    ea6e8732d13f02bcb8cde4af291590a5

    SHA1

    49dfe71339cf21b1f749859f27ee6b4c29378caa

    SHA256

    4ccc468fd4c83387a765113d8006dcc8ee047813c788f2ac41534d5158eaae22

    SHA512

    fb3e837cdac980c4265321d5074316992f7c7ebeece9cac02f562d65639c65d0344020dea7bff83e79e32878569486218a5268b338dcfe2f2f5508a249bb206c

  • \Users\Admin\AppData\Local\Temp\7399932605.exe

    Filesize

    274KB

    MD5

    ea6e8732d13f02bcb8cde4af291590a5

    SHA1

    49dfe71339cf21b1f749859f27ee6b4c29378caa

    SHA256

    4ccc468fd4c83387a765113d8006dcc8ee047813c788f2ac41534d5158eaae22

    SHA512

    fb3e837cdac980c4265321d5074316992f7c7ebeece9cac02f562d65639c65d0344020dea7bff83e79e32878569486218a5268b338dcfe2f2f5508a249bb206c

  • \Users\Admin\AppData\Local\Temp\7399932605.exe

    Filesize

    274KB

    MD5

    ea6e8732d13f02bcb8cde4af291590a5

    SHA1

    49dfe71339cf21b1f749859f27ee6b4c29378caa

    SHA256

    4ccc468fd4c83387a765113d8006dcc8ee047813c788f2ac41534d5158eaae22

    SHA512

    fb3e837cdac980c4265321d5074316992f7c7ebeece9cac02f562d65639c65d0344020dea7bff83e79e32878569486218a5268b338dcfe2f2f5508a249bb206c

  • memory/548-103-0x0000000000400000-0x000000000228B000-memory.dmp

    Filesize

    30.5MB

  • memory/548-98-0x0000000000220000-0x0000000000229000-memory.dmp

    Filesize

    36KB

  • memory/548-95-0x0000000002410000-0x0000000002510000-memory.dmp

    Filesize

    1024KB

  • memory/548-96-0x0000000000400000-0x000000000228B000-memory.dmp

    Filesize

    30.5MB

  • memory/1204-102-0x0000000002A70000-0x0000000002A86000-memory.dmp

    Filesize

    88KB

  • memory/1204-114-0x0000000002AA0000-0x0000000002AB6000-memory.dmp

    Filesize

    88KB

  • memory/2224-100-0x0000000000250000-0x000000000028E000-memory.dmp

    Filesize

    248KB

  • memory/2224-101-0x0000000002410000-0x0000000002510000-memory.dmp

    Filesize

    1024KB

  • memory/2224-1-0x0000000002410000-0x0000000002510000-memory.dmp

    Filesize

    1024KB

  • memory/2224-99-0x0000000000400000-0x00000000022A1000-memory.dmp

    Filesize

    30.6MB

  • memory/2224-3-0x0000000000400000-0x00000000022A1000-memory.dmp

    Filesize

    30.6MB

  • memory/2224-2-0x0000000000250000-0x000000000028E000-memory.dmp

    Filesize

    248KB

  • memory/2224-97-0x0000000002410000-0x0000000002510000-memory.dmp

    Filesize

    1024KB

  • memory/2540-112-0x0000000000250000-0x0000000000350000-memory.dmp

    Filesize

    1024KB

  • memory/2540-113-0x0000000000400000-0x000000000228B000-memory.dmp

    Filesize

    30.5MB

  • memory/2540-115-0x0000000000400000-0x000000000228B000-memory.dmp

    Filesize

    30.5MB

  • memory/2540-118-0x0000000000250000-0x0000000000350000-memory.dmp

    Filesize

    1024KB