Analysis

  • max time kernel
    78s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    27-12-2021 22:31

General

  • Target

    314259cc43c8619b5f8e1ec548b34b64d6b8084342cdd6d8a970718c2d791da8.exe

  • Size

    2.6MB

  • MD5

    35eb63390faa38437c456a1966d2e51a

  • SHA1

    0138a5c885e85ab7960f681f94c552f1cd2b45e9

  • SHA256

    314259cc43c8619b5f8e1ec548b34b64d6b8084342cdd6d8a970718c2d791da8

  • SHA512

    8abef3dde447c025aa69b1524867513a0ecca523583098407bc18f6462acfa38e6e06d621c1943a6c1f6d88030edfdf71c48c2805fa0f5403183bab22c370048

Malware Config

Extracted

Family

cryptbot

C2

hevbaw12.top

morgki01.top

Attributes
  • payload_url

    http://kyvihm01.top/download.php?file=brunei.exe

Signatures

  • CryptBot

    A C++ stealer distributed widely in bundle with other software.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Checks BIOS information in registry 2 TTPs 6 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 16 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 3 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\314259cc43c8619b5f8e1ec548b34b64d6b8084342cdd6d8a970718c2d791da8.exe
    "C:\Users\Admin\AppData\Local\Temp\314259cc43c8619b5f8e1ec548b34b64d6b8084342cdd6d8a970718c2d791da8.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1052
    • C:\Users\Admin\AppData\Local\Temp\File.exe
      "C:\Users\Admin\AppData\Local\Temp\File.exe"
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:68
      • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
        "C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe"
        3⤵
        • Executes dropped EXE
        • Checks BIOS information in registry
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        PID:8
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\314259cc43c8619b5f8e1ec548b34b64d6b8084342cdd6d8a970718c2d791da8.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3540
      • C:\Windows\SysWOW64\timeout.exe
        timeout 4
        3⤵
        • Delays execution with timeout.exe
        PID:1664

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

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

    80a0a602ebe77861d4e00590e219d760

    SHA1

    ebc78b8a2442d821553975ef9f5f220da93fe808

    SHA256

    fd8dec0ae0f21544640589d89a8cf1eeb61fb4c37da206e51be20248aa0d85f6

    SHA512

    28d6572743e2881c11e629f34219471cda7a9975f70efa5442b56f1973b1f9e6062cc6f6d2dadfa253ffc0cabad2e3f7d420c595109e39994f120a952e119bba

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

    80a0a602ebe77861d4e00590e219d760

    SHA1

    ebc78b8a2442d821553975ef9f5f220da93fe808

    SHA256

    fd8dec0ae0f21544640589d89a8cf1eeb61fb4c37da206e51be20248aa0d85f6

    SHA512

    28d6572743e2881c11e629f34219471cda7a9975f70efa5442b56f1973b1f9e6062cc6f6d2dadfa253ffc0cabad2e3f7d420c595109e39994f120a952e119bba

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\QEDTPT~1.ZIP
    MD5

    1cd66c665cf5736bfd7f8d5818e4bb41

    SHA1

    05795c08bfc17602c0cc3411a2836786cb328ec5

    SHA256

    773e86b224f4532b85a520a926a2cc3d7023c28d7f6b84f69b037209b4c2df89

    SHA512

    7549cd75aaa3eb1366ba0b4ed678a8dd060c2a4a30e9a062b27fa3d64a7738c056695b60b3dc3cb15c81ed3ff322e170edd8375d9fb2746c2f71d53313163d04

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\SNDUFW~1.ZIP
    MD5

    19a237b16544c223102a5cb19895694a

    SHA1

    7618ba6d699aca380ddbf2eb722b37005e83ee7b

    SHA256

    9af3716993a5cf60ae62c8494ecaef88b01de3b4596be8bb7e8afb535766f654

    SHA512

    c4e43f0c3343884467964299af745064321d7114a1335392db083a0ba2275967344168860c99d3b1f53b314c05a3a9b14efbd8fabfc72d18290a09b5f4e8428e

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\_Files\_Chrome\DEFAUL~1.BIN
    MD5

    09500b419541e759ce53d87e324fe8fc

    SHA1

    4b882732508d2fc28536f8281c3b58777720c7da

    SHA256

    f80e7db7d3a06c87f03f5d0a9c7ab592ef05bc4fa5a8ab65c318c8455bd94476

    SHA512

    45e04f6283559638be00bffaf1a52a52a6998f835d5d40f756806a2323623074cb7ee9f802f4eba7d7523ccf3170f8986f89349ffbc1f2514ce25fdae0114fde

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\_Files\_Chrome\DEFAUL~1.DB
    MD5

    b608d407fc15adea97c26936bc6f03f6

    SHA1

    953e7420801c76393902c0d6bb56148947e41571

    SHA256

    b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

    SHA512

    cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\_Files\_Chrome\DEFAUL~2.DB
    MD5

    055c8c5c47424f3c2e7a6fc2ee904032

    SHA1

    5952781d22cff35d94861fac25d89a39af6d0a87

    SHA256

    531b3121bd59938df4933972344d936a67e75d8b1741807a8a51c898d185dd2a

    SHA512

    c2772893695f49cb185add62c35284779b20d45adc01184f1912613fa8b2d70c8e785f0d7cfa3bfaf1d2d58e7cdc74f4304fd973a956601927719d6d370dd57a

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\_Files\_Chrome\DEFAUL~3.DB
    MD5

    8ee018331e95a610680a789192a9d362

    SHA1

    e1fba0ac3f3d8689acf6c2ee26afdfd0c8e02df9

    SHA256

    94354ea6703c5ef5fa052aeb1d29715587d80300858ebc063a61c02b7e6e9575

    SHA512

    4b89b5adc77641e497eda7db62a48fee7b4b8dda83bff637cac850645d31deb93aafee5afeb41390e07fd16505a63f418b6cb153a1d35777c483e2d6d3f783b4

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\_Files\_INFOR~1.TXT
    MD5

    20c19b79dd64244de503657dac6c3dc5

    SHA1

    5f580f5e9d39e09b9109ceae4b13261018c41672

    SHA256

    cbdfb6576046b3a340bda332aa9e95f76d49ad43b88d5031df6c19a0a2c76809

    SHA512

    f4ff67f28a6179b2dba19e4c9c3dad5bea88ad6c9aa7c393509c37a26c3f8167701acc653d617362b1c164a775accbf66359f02e3709d2a0428468c49750ec9f

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\_Files\_SCREE~1.JPE
    MD5

    c06e501fed7d086d1ab8b0c2a24eb9d5

    SHA1

    ded5c044806be3da8d2f52709cc57f60ca1c5c63

    SHA256

    4aab182e0e9162a346f07c4ae4bdec0747098463ce77794ed9ceb724c2efd6b5

    SHA512

    dbce7b6270999fbb3fb7c608d044298c9837227f6697f2ac2b8e4942254c9499d2b5aeba6456bb8c14e226c7e69d431986f7098a5040bc1185218e8c4a3b51fc

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\files_\SCREEN~1.JPG
    MD5

    c06e501fed7d086d1ab8b0c2a24eb9d5

    SHA1

    ded5c044806be3da8d2f52709cc57f60ca1c5c63

    SHA256

    4aab182e0e9162a346f07c4ae4bdec0747098463ce77794ed9ceb724c2efd6b5

    SHA512

    dbce7b6270999fbb3fb7c608d044298c9837227f6697f2ac2b8e4942254c9499d2b5aeba6456bb8c14e226c7e69d431986f7098a5040bc1185218e8c4a3b51fc

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\files_\SYSTEM~1.TXT
    MD5

    20c19b79dd64244de503657dac6c3dc5

    SHA1

    5f580f5e9d39e09b9109ceae4b13261018c41672

    SHA256

    cbdfb6576046b3a340bda332aa9e95f76d49ad43b88d5031df6c19a0a2c76809

    SHA512

    f4ff67f28a6179b2dba19e4c9c3dad5bea88ad6c9aa7c393509c37a26c3f8167701acc653d617362b1c164a775accbf66359f02e3709d2a0428468c49750ec9f

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\files_\_Chrome\DEFAUL~1.BIN
    MD5

    09500b419541e759ce53d87e324fe8fc

    SHA1

    4b882732508d2fc28536f8281c3b58777720c7da

    SHA256

    f80e7db7d3a06c87f03f5d0a9c7ab592ef05bc4fa5a8ab65c318c8455bd94476

    SHA512

    45e04f6283559638be00bffaf1a52a52a6998f835d5d40f756806a2323623074cb7ee9f802f4eba7d7523ccf3170f8986f89349ffbc1f2514ce25fdae0114fde

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\files_\_Chrome\DEFAUL~1.DB
    MD5

    b608d407fc15adea97c26936bc6f03f6

    SHA1

    953e7420801c76393902c0d6bb56148947e41571

    SHA256

    b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

    SHA512

    cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\files_\_Chrome\DEFAUL~2.DB
    MD5

    055c8c5c47424f3c2e7a6fc2ee904032

    SHA1

    5952781d22cff35d94861fac25d89a39af6d0a87

    SHA256

    531b3121bd59938df4933972344d936a67e75d8b1741807a8a51c898d185dd2a

    SHA512

    c2772893695f49cb185add62c35284779b20d45adc01184f1912613fa8b2d70c8e785f0d7cfa3bfaf1d2d58e7cdc74f4304fd973a956601927719d6d370dd57a

  • C:\Users\Admin\AppData\Local\Temp\bkLXbknWkMC\files_\_Chrome\DEFAUL~3.DB
    MD5

    8ee018331e95a610680a789192a9d362

    SHA1

    e1fba0ac3f3d8689acf6c2ee26afdfd0c8e02df9

    SHA256

    94354ea6703c5ef5fa052aeb1d29715587d80300858ebc063a61c02b7e6e9575

    SHA512

    4b89b5adc77641e497eda7db62a48fee7b4b8dda83bff637cac850645d31deb93aafee5afeb41390e07fd16505a63f418b6cb153a1d35777c483e2d6d3f783b4

  • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
    MD5

    80a0a602ebe77861d4e00590e219d760

    SHA1

    ebc78b8a2442d821553975ef9f5f220da93fe808

    SHA256

    fd8dec0ae0f21544640589d89a8cf1eeb61fb4c37da206e51be20248aa0d85f6

    SHA512

    28d6572743e2881c11e629f34219471cda7a9975f70efa5442b56f1973b1f9e6062cc6f6d2dadfa253ffc0cabad2e3f7d420c595109e39994f120a952e119bba

  • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
    MD5

    80a0a602ebe77861d4e00590e219d760

    SHA1

    ebc78b8a2442d821553975ef9f5f220da93fe808

    SHA256

    fd8dec0ae0f21544640589d89a8cf1eeb61fb4c37da206e51be20248aa0d85f6

    SHA512

    28d6572743e2881c11e629f34219471cda7a9975f70efa5442b56f1973b1f9e6062cc6f6d2dadfa253ffc0cabad2e3f7d420c595109e39994f120a952e119bba

  • memory/8-144-0x0000000000000000-mapping.dmp
  • memory/8-151-0x0000000000A30000-0x0000000001116000-memory.dmp
    Filesize

    6.9MB

  • memory/8-150-0x0000000000A30000-0x0000000001116000-memory.dmp
    Filesize

    6.9MB

  • memory/8-149-0x0000000000A30000-0x0000000001116000-memory.dmp
    Filesize

    6.9MB

  • memory/8-148-0x0000000000A30000-0x0000000001116000-memory.dmp
    Filesize

    6.9MB

  • memory/8-147-0x0000000077DE0000-0x0000000077F6E000-memory.dmp
    Filesize

    1.6MB

  • memory/68-140-0x0000000077DE0000-0x0000000077F6E000-memory.dmp
    Filesize

    1.6MB

  • memory/68-120-0x0000000000000000-mapping.dmp
  • memory/68-127-0x0000000000B20000-0x0000000001206000-memory.dmp
    Filesize

    6.9MB

  • memory/68-124-0x0000000000B20000-0x0000000001206000-memory.dmp
    Filesize

    6.9MB

  • memory/68-125-0x0000000000B20000-0x0000000001206000-memory.dmp
    Filesize

    6.9MB

  • memory/68-126-0x0000000000B20000-0x0000000001206000-memory.dmp
    Filesize

    6.9MB

  • memory/1052-118-0x0000000000880000-0x0000000000F64000-memory.dmp
    Filesize

    6.9MB

  • memory/1052-117-0x0000000000880000-0x0000000000F64000-memory.dmp
    Filesize

    6.9MB

  • memory/1052-116-0x0000000000880000-0x0000000000F64000-memory.dmp
    Filesize

    6.9MB

  • memory/1052-119-0x0000000000880000-0x0000000000F64000-memory.dmp
    Filesize

    6.9MB

  • memory/1052-115-0x0000000077DE0000-0x0000000077F6E000-memory.dmp
    Filesize

    1.6MB

  • memory/1664-143-0x0000000000000000-mapping.dmp
  • memory/3540-123-0x0000000000000000-mapping.dmp