Analysis

  • max time kernel
    151s
  • max time network
    102s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    26-09-2021 14:01

General

  • Target

    231bd999a5103521852e4c3e283bb649.exe

  • Size

    199KB

  • MD5

    231bd999a5103521852e4c3e283bb649

  • SHA1

    27fd4940930c42ea737669760640400748b1124c

  • SHA256

    fe182a93d10cf8b048cb1a72b07f80ded9f6e2e0177f74f2baf9f17ede242ee9

  • SHA512

    d2df51691783e348f72b1f7ef660225d89f8c0f07561102b5f3bace3261e68be28a5c5a4d8a9b5ef73c92039d8857cfd82fb846757c2e68779590ba6d02863cd

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://naghenrietti1.top/

http://kimballiett2.top/

http://xadriettany3.top/

http://jebeccallis4.top/

http://nityanneron5.top/

http://umayaniela6.top/

http://lynettaram7.top/

http://sadineyalas8.top/

http://geenaldencia9.top/

http://aradysiusep10.top/

rc4.i32
rc4.i32

Extracted

Family

raccoon

Botnet

5ff0ccb2bc00dc52d1ad09949e9c7663bc9ca4d4

Attributes
  • url4cnc

    https://t.me/agrybirdsgamerept

rc4.plain
rc4.plain

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Arkei Stealer Payload 1 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 8 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 2 IoCs

    Detects Themida, an advanced Windows software protection system.

  • 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.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 32 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\231bd999a5103521852e4c3e283bb649.exe
    "C:\Users\Admin\AppData\Local\Temp\231bd999a5103521852e4c3e283bb649.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:900
    • C:\Users\Admin\AppData\Local\Temp\231bd999a5103521852e4c3e283bb649.exe
      "C:\Users\Admin\AppData\Local\Temp\231bd999a5103521852e4c3e283bb649.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:840
  • C:\Users\Admin\AppData\Local\Temp\EC20.exe
    C:\Users\Admin\AppData\Local\Temp\EC20.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:2368
  • C:\Users\Admin\AppData\Local\Temp\F1AF.exe
    C:\Users\Admin\AppData\Local\Temp\F1AF.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3784
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\F1AF.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:636
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:1328
  • C:\Users\Admin\AppData\Local\Temp\F682.exe
    C:\Users\Admin\AppData\Local\Temp\F682.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:3832
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3832 -s 1320
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:496

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\EC20.exe
    MD5

    a8f923639f9b10392a12e409a4b65d80

    SHA1

    5dc1b8d6751f37ac2cfa526e35de2bedac479332

    SHA256

    ec9c47685aaf2711429538df1efddeace58992d79f685387778f0a99af4cdbe5

    SHA512

    57a34ad6388e675c69dcce9a5a8761d9d7ec80be3229545b82dfd8bf16f0702ccdf6a51b8316d569f10f8a6e2e9b9e78ee07227b73d356984a10061b63921214

  • C:\Users\Admin\AppData\Local\Temp\F1AF.exe
    MD5

    15f4beea08a4d087fc859abefac17fc7

    SHA1

    dbffa25e492c5e9f8c95f8f4831c14dec7f3f9da

    SHA256

    e6c8bc74b134a6e758d09ac2756cf9256fefd5ab2985a3bea7fcd4e9593c1926

    SHA512

    e1aa86c2cca518fd103822fa68dbf0670b1daa728a1537857b9e33fcff50a91c99bada6228e058805474c95c6f1ed07d1ded891aaa498414346e814a302c919c

  • C:\Users\Admin\AppData\Local\Temp\F1AF.exe
    MD5

    15f4beea08a4d087fc859abefac17fc7

    SHA1

    dbffa25e492c5e9f8c95f8f4831c14dec7f3f9da

    SHA256

    e6c8bc74b134a6e758d09ac2756cf9256fefd5ab2985a3bea7fcd4e9593c1926

    SHA512

    e1aa86c2cca518fd103822fa68dbf0670b1daa728a1537857b9e33fcff50a91c99bada6228e058805474c95c6f1ed07d1ded891aaa498414346e814a302c919c

  • C:\Users\Admin\AppData\Local\Temp\F682.exe
    MD5

    4bb4625eefca3f9dfa7ceb06e2ed0acf

    SHA1

    17eef61253fb891fefe31852db649c328e718c1f

    SHA256

    4bf0b22a3a3a941e5e656212af53bdacd3cc42a104bfdf0a331f3819d82384d5

    SHA512

    d2893a37226007207c2ad04f2b40e0ec9aa91478fc65792c8f487435d018368b7f85ddd639212cf0b827f5e7c8cfffa1449962a803a18e3efc3c5cfd6c05792b

  • C:\Users\Admin\AppData\Local\Temp\F682.exe
    MD5

    4bb4625eefca3f9dfa7ceb06e2ed0acf

    SHA1

    17eef61253fb891fefe31852db649c328e718c1f

    SHA256

    4bf0b22a3a3a941e5e656212af53bdacd3cc42a104bfdf0a331f3819d82384d5

    SHA512

    d2893a37226007207c2ad04f2b40e0ec9aa91478fc65792c8f487435d018368b7f85ddd639212cf0b827f5e7c8cfffa1449962a803a18e3efc3c5cfd6c05792b

  • \ProgramData\mozglue.dll
    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • \ProgramData\nss3.dll
    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • \ProgramData\sqlite3.dll
    MD5

    e477a96c8f2b18d6b5c27bde49c990bf

    SHA1

    e980c9bf41330d1e5bd04556db4646a0210f7409

    SHA256

    16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

    SHA512

    335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

  • \Users\Admin\AppData\LocalLow\sqlite3.dll
    MD5

    f964811b68f9f1487c2b41e1aef576ce

    SHA1

    b423959793f14b1416bc3b7051bed58a1034025f

    SHA256

    83bc57dcf282264f2b00c21ce0339eac20fcb7401f7c5472c0cd0c014844e5f7

    SHA512

    565b1a7291c6fcb63205907fcd9e72fc2e11ca945afc4468c378edba882e2f314c2ac21a7263880ff7d4b84c2a1678024c1ac9971ac1c1de2bfa4248ec0f98c4

  • \Users\Admin\AppData\LocalLow\uS0wV5wY9qH3\freebl3.dll
    MD5

    60acd24430204ad2dc7f148b8cfe9bdc

    SHA1

    989f377b9117d7cb21cbe92a4117f88f9c7693d9

    SHA256

    9876c53134dbbec4dcca67581f53638eba3fea3a15491aa3cf2526b71032da97

    SHA512

    626c36e9567f57fa8ec9c36d96cbadede9c6f6734a7305ecfb9f798952bbacdfa33a1b6c4999ba5b78897dc2ec6f91870f7ec25b2ceacbaee4be942fe881db01

  • \Users\Admin\AppData\LocalLow\uS0wV5wY9qH3\mozglue.dll
    MD5

    eae9273f8cdcf9321c6c37c244773139

    SHA1

    8378e2a2f3635574c106eea8419b5eb00b8489b0

    SHA256

    a0c6630d4012ae0311ff40f4f06911bcf1a23f7a4762ce219b8dffa012d188cc

    SHA512

    06e43e484a89cea9ba9b9519828d38e7c64b040f44cdaeb321cbda574e7551b11fea139ce3538f387a0a39a3d8c4cba7f4cf03e4a3c98db85f8121c2212a9097

  • \Users\Admin\AppData\LocalLow\uS0wV5wY9qH3\nss3.dll
    MD5

    02cc7b8ee30056d5912de54f1bdfc219

    SHA1

    a6923da95705fb81e368ae48f93d28522ef552fb

    SHA256

    1989526553fd1e1e49b0fea8036822ca062d3d39c4cab4a37846173d0f1753d5

    SHA512

    0d5dfcf4fb19b27246fa799e339d67cd1b494427783f379267fb2d10d615ffb734711bab2c515062c078f990a44a36f2d15859b1dacd4143dcc35b5c0cee0ef5

  • \Users\Admin\AppData\LocalLow\uS0wV5wY9qH3\softokn3.dll
    MD5

    4e8df049f3459fa94ab6ad387f3561ac

    SHA1

    06ed392bc29ad9d5fc05ee254c2625fd65925114

    SHA256

    25a4dae37120426ab060ebb39b7030b3e7c1093cc34b0877f223b6843b651871

    SHA512

    3dd4a86f83465989b2b30c240a7307edd1b92d5c1d5c57d47eff287dc9daa7bace157017908d82e00be90f08ff5badb68019ffc9d881440229dcea5038f61cd6

  • memory/636-152-0x0000000000000000-mapping.dmp
  • memory/840-114-0x0000000000400000-0x0000000000409000-memory.dmp
    Filesize

    36KB

  • memory/840-115-0x0000000000402FA5-mapping.dmp
  • memory/900-116-0x00000000004C0000-0x000000000056E000-memory.dmp
    Filesize

    696KB

  • memory/1328-154-0x0000000000000000-mapping.dmp
  • memory/2368-125-0x0000000000F20000-0x0000000000F21000-memory.dmp
    Filesize

    4KB

  • memory/2368-150-0x0000000006D00000-0x0000000006D01000-memory.dmp
    Filesize

    4KB

  • memory/2368-157-0x0000000007B60000-0x0000000007B61000-memory.dmp
    Filesize

    4KB

  • memory/2368-156-0x0000000006FB0000-0x0000000006FB1000-memory.dmp
    Filesize

    4KB

  • memory/2368-155-0x0000000007C60000-0x0000000007C61000-memory.dmp
    Filesize

    4KB

  • memory/2368-134-0x00000000053F0000-0x00000000053F1000-memory.dmp
    Filesize

    4KB

  • memory/2368-153-0x0000000007010000-0x0000000007011000-memory.dmp
    Filesize

    4KB

  • memory/2368-133-0x0000000000660000-0x0000000000661000-memory.dmp
    Filesize

    4KB

  • memory/2368-118-0x0000000000000000-mapping.dmp
  • memory/2368-129-0x0000000005500000-0x0000000005501000-memory.dmp
    Filesize

    4KB

  • memory/2368-128-0x0000000003160000-0x0000000003161000-memory.dmp
    Filesize

    4KB

  • memory/2368-127-0x0000000005A00000-0x0000000005A01000-memory.dmp
    Filesize

    4KB

  • memory/2368-151-0x0000000006EF0000-0x0000000006EF1000-memory.dmp
    Filesize

    4KB

  • memory/2368-120-0x0000000077020000-0x00000000771AE000-memory.dmp
    Filesize

    1.6MB

  • memory/2368-148-0x0000000006B30000-0x0000000006B31000-memory.dmp
    Filesize

    4KB

  • memory/2368-149-0x0000000007230000-0x0000000007231000-memory.dmp
    Filesize

    4KB

  • memory/2368-135-0x0000000005430000-0x0000000005431000-memory.dmp
    Filesize

    4KB

  • memory/3024-117-0x00000000005D0000-0x00000000005E6000-memory.dmp
    Filesize

    88KB

  • memory/3784-122-0x0000000000000000-mapping.dmp
  • memory/3784-140-0x0000000000400000-0x0000000000500000-memory.dmp
    Filesize

    1024KB

  • memory/3784-137-0x0000000002140000-0x00000000021D0000-memory.dmp
    Filesize

    576KB

  • memory/3832-130-0x0000000000000000-mapping.dmp
  • memory/3832-138-0x0000000000400000-0x000000000044D000-memory.dmp
    Filesize

    308KB

  • memory/3832-136-0x00000000005E0000-0x000000000060D000-memory.dmp
    Filesize

    180KB