Analysis

  • max time kernel
    151s
  • max time network
    163s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    25-10-2021 04:20

General

  • Target

    4c9f558a0f698f7f8f07f7abd36790abd6611764be6e46a3804e90df5634eef8.exe

  • Size

    262KB

  • MD5

    fe04a1c950a58c44da9ccc5559408cf6

  • SHA1

    22bbb1045738a60f9fa88d26ac00ed4d348ac989

  • SHA256

    4c9f558a0f698f7f8f07f7abd36790abd6611764be6e46a3804e90df5634eef8

  • SHA512

    aa17ac62381ca1997c27b64d1569fd12611ca3cc0f5e5c7359ce620f49c54cc12d1a4a3ef77f26968b4f855513065e7170b1cd91eed26cb43787c7d089347fe2

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://xacokuo8.top/

http://hajezey1.top/

rc4.i32
rc4.i32

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 7 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Executes dropped EXE 8 IoCs
  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 4 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 37 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4c9f558a0f698f7f8f07f7abd36790abd6611764be6e46a3804e90df5634eef8.exe
    "C:\Users\Admin\AppData\Local\Temp\4c9f558a0f698f7f8f07f7abd36790abd6611764be6e46a3804e90df5634eef8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4044
    • C:\Users\Admin\AppData\Local\Temp\4c9f558a0f698f7f8f07f7abd36790abd6611764be6e46a3804e90df5634eef8.exe
      "C:\Users\Admin\AppData\Local\Temp\4c9f558a0f698f7f8f07f7abd36790abd6611764be6e46a3804e90df5634eef8.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:4340
  • C:\Users\Admin\AppData\Local\Temp\C427.exe
    C:\Users\Admin\AppData\Local\Temp\C427.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:984
    • C:\Users\Admin\AppData\Local\Temp\C427.exe
      C:\Users\Admin\AppData\Local\Temp\C427.exe
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:2972
  • C:\Users\Admin\AppData\Local\Temp\4A7E.exe
    C:\Users\Admin\AppData\Local\Temp\4A7E.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Users\Admin\AppData\Local\Temp\4A7E.exe
      C:\Users\Admin\AppData\Local\Temp\4A7E.exe
      2⤵
      • Executes dropped EXE
      PID:1508
    • C:\Users\Admin\AppData\Local\Temp\4A7E.exe
      C:\Users\Admin\AppData\Local\Temp\4A7E.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1616
  • C:\Users\Admin\AppData\Local\Temp\6059.exe
    C:\Users\Admin\AppData\Local\Temp\6059.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1676
    • C:\Users\Admin\AppData\Local\Temp\6059.exe
      C:\Users\Admin\AppData\Local\Temp\6059.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2340
  • C:\Users\Admin\AppData\Local\Temp\FC1D.exe
    C:\Users\Admin\AppData\Local\Temp\FC1D.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:5036

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\4A7E.exe.log

    MD5

    605f809fab8c19729d39d075f7ffdb53

    SHA1

    c546f877c9bd53563174a90312a8337fdfc5fdd9

    SHA256

    6904d540649e76c55f99530b81be17e099184bb4cad415aa9b9b39cc3677f556

    SHA512

    82cc12c3186ae23884b8d5c104638c8206272c4389ade56b926dfc1d437b03888159b3c790b188b54d277a262e731927e703e680ea642e1417faee27443fd5b3

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\6059.exe.log

    MD5

    41fbed686f5700fc29aaccf83e8ba7fd

    SHA1

    5271bc29538f11e42a3b600c8dc727186e912456

    SHA256

    df4e9d012687cdabd15e86bf37be15d6c822e1f50dde530a02468f0006586437

    SHA512

    234b2235c1ced25810a4121c5eabcbf9f269e82c126a1adc363ee34478173f8b462e90eb53f5f11533641663350b90ec1e2360fd805b10c041fab12f4da7a034

  • C:\Users\Admin\AppData\Local\Temp\4A7E.exe

    MD5

    4ae44e9cb5a3f3d5f40d52c71bdef439

    SHA1

    06d591028442b6e18e36f9495ee53d6be6d3a273

    SHA256

    153b903cf8c24a57937304fafc9c77e1abfa650244f29a141c57d1ba391dc1e0

    SHA512

    f42ab8cb503805282a03f6ecbb90d7db65fd057c3f4f9904fa814c488aeae6aa7105ca528c8a7b20d74ebceb4149c9f16c75f07a95db5f2bccbe3b5be2f1febf

  • C:\Users\Admin\AppData\Local\Temp\4A7E.exe

    MD5

    4ae44e9cb5a3f3d5f40d52c71bdef439

    SHA1

    06d591028442b6e18e36f9495ee53d6be6d3a273

    SHA256

    153b903cf8c24a57937304fafc9c77e1abfa650244f29a141c57d1ba391dc1e0

    SHA512

    f42ab8cb503805282a03f6ecbb90d7db65fd057c3f4f9904fa814c488aeae6aa7105ca528c8a7b20d74ebceb4149c9f16c75f07a95db5f2bccbe3b5be2f1febf

  • C:\Users\Admin\AppData\Local\Temp\4A7E.exe

    MD5

    4ae44e9cb5a3f3d5f40d52c71bdef439

    SHA1

    06d591028442b6e18e36f9495ee53d6be6d3a273

    SHA256

    153b903cf8c24a57937304fafc9c77e1abfa650244f29a141c57d1ba391dc1e0

    SHA512

    f42ab8cb503805282a03f6ecbb90d7db65fd057c3f4f9904fa814c488aeae6aa7105ca528c8a7b20d74ebceb4149c9f16c75f07a95db5f2bccbe3b5be2f1febf

  • C:\Users\Admin\AppData\Local\Temp\4A7E.exe

    MD5

    4ae44e9cb5a3f3d5f40d52c71bdef439

    SHA1

    06d591028442b6e18e36f9495ee53d6be6d3a273

    SHA256

    153b903cf8c24a57937304fafc9c77e1abfa650244f29a141c57d1ba391dc1e0

    SHA512

    f42ab8cb503805282a03f6ecbb90d7db65fd057c3f4f9904fa814c488aeae6aa7105ca528c8a7b20d74ebceb4149c9f16c75f07a95db5f2bccbe3b5be2f1febf

  • C:\Users\Admin\AppData\Local\Temp\6059.exe

    MD5

    0cafd553a0f55d525a5ec0ec6c2c06bd

    SHA1

    621e411916749c72cdc4d97f46b843bb758659c1

    SHA256

    3acca9f2af679c0cba972e71c88871397132c5f389a5beffa7710204b0c81987

    SHA512

    b56e4a59cc314ba533cb0c2d763482de28320f7f2c8eb73d9209745f61b4e22b041756d5c20775a0afab67f86eb68c1267b76b5da1baffbadc75b6ffeda3fdb9

  • C:\Users\Admin\AppData\Local\Temp\6059.exe

    MD5

    0cafd553a0f55d525a5ec0ec6c2c06bd

    SHA1

    621e411916749c72cdc4d97f46b843bb758659c1

    SHA256

    3acca9f2af679c0cba972e71c88871397132c5f389a5beffa7710204b0c81987

    SHA512

    b56e4a59cc314ba533cb0c2d763482de28320f7f2c8eb73d9209745f61b4e22b041756d5c20775a0afab67f86eb68c1267b76b5da1baffbadc75b6ffeda3fdb9

  • C:\Users\Admin\AppData\Local\Temp\6059.exe

    MD5

    0cafd553a0f55d525a5ec0ec6c2c06bd

    SHA1

    621e411916749c72cdc4d97f46b843bb758659c1

    SHA256

    3acca9f2af679c0cba972e71c88871397132c5f389a5beffa7710204b0c81987

    SHA512

    b56e4a59cc314ba533cb0c2d763482de28320f7f2c8eb73d9209745f61b4e22b041756d5c20775a0afab67f86eb68c1267b76b5da1baffbadc75b6ffeda3fdb9

  • C:\Users\Admin\AppData\Local\Temp\C427.exe

    MD5

    fe04a1c950a58c44da9ccc5559408cf6

    SHA1

    22bbb1045738a60f9fa88d26ac00ed4d348ac989

    SHA256

    4c9f558a0f698f7f8f07f7abd36790abd6611764be6e46a3804e90df5634eef8

    SHA512

    aa17ac62381ca1997c27b64d1569fd12611ca3cc0f5e5c7359ce620f49c54cc12d1a4a3ef77f26968b4f855513065e7170b1cd91eed26cb43787c7d089347fe2

  • C:\Users\Admin\AppData\Local\Temp\C427.exe

    MD5

    fe04a1c950a58c44da9ccc5559408cf6

    SHA1

    22bbb1045738a60f9fa88d26ac00ed4d348ac989

    SHA256

    4c9f558a0f698f7f8f07f7abd36790abd6611764be6e46a3804e90df5634eef8

    SHA512

    aa17ac62381ca1997c27b64d1569fd12611ca3cc0f5e5c7359ce620f49c54cc12d1a4a3ef77f26968b4f855513065e7170b1cd91eed26cb43787c7d089347fe2

  • C:\Users\Admin\AppData\Local\Temp\C427.exe

    MD5

    fe04a1c950a58c44da9ccc5559408cf6

    SHA1

    22bbb1045738a60f9fa88d26ac00ed4d348ac989

    SHA256

    4c9f558a0f698f7f8f07f7abd36790abd6611764be6e46a3804e90df5634eef8

    SHA512

    aa17ac62381ca1997c27b64d1569fd12611ca3cc0f5e5c7359ce620f49c54cc12d1a4a3ef77f26968b4f855513065e7170b1cd91eed26cb43787c7d089347fe2

  • C:\Users\Admin\AppData\Local\Temp\FC1D.exe

    MD5

    ee7fa94d11e33a49aec16497e6085bb4

    SHA1

    96b627914c8f66db127b5d6575c4ff1ea20a4820

    SHA256

    8ca16079011214a3a575e900624f20fd9227791fa2c0bf91e1d081c75b5cd46f

    SHA512

    06fd914ada4748bd762b09e25071c0ddc93683345e882afc133fa2038ab61203c05453160a7f79ac07bce014ebbc5049d3aa7b2d9b2d232a5dc0a198763a5295

  • C:\Users\Admin\AppData\Local\Temp\FC1D.exe

    MD5

    ee7fa94d11e33a49aec16497e6085bb4

    SHA1

    96b627914c8f66db127b5d6575c4ff1ea20a4820

    SHA256

    8ca16079011214a3a575e900624f20fd9227791fa2c0bf91e1d081c75b5cd46f

    SHA512

    06fd914ada4748bd762b09e25071c0ddc93683345e882afc133fa2038ab61203c05453160a7f79ac07bce014ebbc5049d3aa7b2d9b2d232a5dc0a198763a5295

  • memory/984-120-0x0000000000000000-mapping.dmp

  • memory/1044-128-0x0000000000000000-mapping.dmp

  • memory/1044-131-0x0000000000B20000-0x0000000000B21000-memory.dmp

    Filesize

    4KB

  • memory/1616-142-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1616-173-0x0000000006830000-0x0000000006831000-memory.dmp

    Filesize

    4KB

  • memory/1616-174-0x0000000006F30000-0x0000000006F31000-memory.dmp

    Filesize

    4KB

  • memory/1616-171-0x0000000005D60000-0x0000000005D61000-memory.dmp

    Filesize

    4KB

  • memory/1616-168-0x0000000005090000-0x0000000005091000-memory.dmp

    Filesize

    4KB

  • memory/1616-155-0x0000000004DC0000-0x0000000004DC1000-memory.dmp

    Filesize

    4KB

  • memory/1616-154-0x0000000004D50000-0x0000000004D51000-memory.dmp

    Filesize

    4KB

  • memory/1616-143-0x000000000043713E-mapping.dmp

  • memory/1616-153-0x0000000004E40000-0x0000000004E41000-memory.dmp

    Filesize

    4KB

  • memory/1616-152-0x0000000004CF0000-0x0000000004CF1000-memory.dmp

    Filesize

    4KB

  • memory/1616-151-0x0000000005450000-0x0000000005451000-memory.dmp

    Filesize

    4KB

  • memory/1616-149-0x0000000004E30000-0x0000000004E31000-memory.dmp

    Filesize

    4KB

  • memory/1616-150-0x00000000026D0000-0x00000000026D1000-memory.dmp

    Filesize

    4KB

  • memory/1676-140-0x0000000004D40000-0x0000000004D41000-memory.dmp

    Filesize

    4KB

  • memory/1676-137-0x0000000000550000-0x0000000000551000-memory.dmp

    Filesize

    4KB

  • memory/1676-134-0x0000000000000000-mapping.dmp

  • memory/1676-139-0x0000000004DA0000-0x0000000004DA1000-memory.dmp

    Filesize

    4KB

  • memory/1676-141-0x0000000005450000-0x0000000005451000-memory.dmp

    Filesize

    4KB

  • memory/1676-148-0x0000000004F40000-0x0000000004F41000-memory.dmp

    Filesize

    4KB

  • memory/2340-156-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/2340-167-0x0000000004D50000-0x0000000005356000-memory.dmp

    Filesize

    6.0MB

  • memory/2340-157-0x0000000000418D2A-mapping.dmp

  • memory/2452-127-0x0000000000BB0000-0x0000000000BC6000-memory.dmp

    Filesize

    88KB

  • memory/2452-119-0x0000000000AC0000-0x0000000000AD6000-memory.dmp

    Filesize

    88KB

  • memory/2972-125-0x0000000000402E0C-mapping.dmp

  • memory/4044-115-0x0000000001251000-0x0000000001262000-memory.dmp

    Filesize

    68KB

  • memory/4044-118-0x0000000000030000-0x0000000000039000-memory.dmp

    Filesize

    36KB

  • memory/4340-116-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/4340-117-0x0000000000402E0C-mapping.dmp

  • memory/5036-182-0x0000000000000000-mapping.dmp

  • memory/5036-185-0x0000000000150000-0x0000000000151000-memory.dmp

    Filesize

    4KB

  • memory/5036-191-0x0000000004A20000-0x0000000004A21000-memory.dmp

    Filesize

    4KB

  • memory/5036-192-0x00000000048D0000-0x0000000004ED6000-memory.dmp

    Filesize

    6.0MB