Analysis

  • max time kernel
    123s
  • max time network
    123s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    27-12-2021 09:43

General

  • Target

    0f73f9885dc262aa08acb765fdd226d779265e017ca605da15cb887a2b4b9899.exe

  • Size

    2.7MB

  • MD5

    5289cac36220c353af14dc3f14faf91a

  • SHA1

    5080eb50ad81a2026d0e155af6149b66b21d2777

  • SHA256

    0f73f9885dc262aa08acb765fdd226d779265e017ca605da15cb887a2b4b9899

  • SHA512

    44225c2abded6d592b5aa33d5dd81b1ba638dd29237ebc6f781ca3d032cb272f36da0447230d32f556556ef201bd27433a48a289c5a65ed9cc49661b20e98d9c

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\0f73f9885dc262aa08acb765fdd226d779265e017ca605da15cb887a2b4b9899.exe
    "C:\Users\Admin\AppData\Local\Temp\0f73f9885dc262aa08acb765fdd226d779265e017ca605da15cb887a2b4b9899.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:2796
    • 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:1164
      • 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:1124
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\nNbfvhlaFqqW & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\0f73f9885dc262aa08acb765fdd226d779265e017ca605da15cb887a2b4b9899.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2324
      • C:\Windows\SysWOW64\timeout.exe
        timeout 4
        3⤵
        • Delays execution with timeout.exe
        PID:4064

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

    1d2a39112767125a8ee84c1b63d070fe

    SHA1

    f6ae7e6351d8c16cf470d59a481ed053cfc55dd5

    SHA256

    5f59627da5032edd29bca3798f9d9e67f441bec8a4fc3410360eb9a7bf567386

    SHA512

    cba766ca4b875dd804d32289e018140fbd0a7ec439188571d05ed4b7ac2f64c11217756e2e42cf85d76abdc2456f08f67fb666aa9d0bdbc73996842f5a1e5efa

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

    1d2a39112767125a8ee84c1b63d070fe

    SHA1

    f6ae7e6351d8c16cf470d59a481ed053cfc55dd5

    SHA256

    5f59627da5032edd29bca3798f9d9e67f441bec8a4fc3410360eb9a7bf567386

    SHA512

    cba766ca4b875dd804d32289e018140fbd0a7ec439188571d05ed4b7ac2f64c11217756e2e42cf85d76abdc2456f08f67fb666aa9d0bdbc73996842f5a1e5efa

  • C:\Users\Admin\AppData\Local\Temp\nNbfvhlaFqqW\SRMLRK~1.ZIP
    MD5

    e2ea2acfb868036e47c615198ec2bd58

    SHA1

    31d02c46557f502536a1ceede6747d8171314930

    SHA256

    81dced8e288bd5fe8448b61cbc1ab6c1ca733b5aaf86dffe0dc78a67f4269fb3

    SHA512

    4a6fb476c99dc5a012f87ef405b4bf18c3483280be06b65a79056fc7cd8d30e6df7a1c547468d8cc5b6e8b19aa3ebef267909b6b6fb9f78962133edad231caf6

  • C:\Users\Admin\AppData\Local\Temp\nNbfvhlaFqqW\TDYFDL~1.ZIP
    MD5

    024b7efed5454816013c994863ca2c45

    SHA1

    4f2bc392fcb425c599a1e50eac15e052d8a7469d

    SHA256

    767f42cdf35262cdf330298d80a12035eb105ff2892101ae9c3a11bd5057705e

    SHA512

    0380500c0aa8ca540eacb517d6b0bedebc047610931b73aa63e135b13b4c5bd7f5bc22c6c547942e6c6587f44fdc6ca0add4070b1a2d79963fe2c6c5b03e50ec

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

    f4b8e6e7ca32ed5ab1653cc327475cc0

    SHA1

    e7c30740b8cc28534d398ff4036e0cc6649619ce

    SHA256

    34abcff7dd7e3157dc78b58d9fc7ce57be556a550bcc6a2b2257c9b08107cbe2

    SHA512

    edc72a374b28b984d8d3ced5a27ddb1a91e843ab873f7b700eecea87c0dfea961359f7931ea127ee2b8edc2602968795c6b9f121622dffca23241736c44d8ae2

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

    b608d407fc15adea97c26936bc6f03f6

    SHA1

    953e7420801c76393902c0d6bb56148947e41571

    SHA256

    b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

    SHA512

    cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

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

    055c8c5c47424f3c2e7a6fc2ee904032

    SHA1

    5952781d22cff35d94861fac25d89a39af6d0a87

    SHA256

    531b3121bd59938df4933972344d936a67e75d8b1741807a8a51c898d185dd2a

    SHA512

    c2772893695f49cb185add62c35284779b20d45adc01184f1912613fa8b2d70c8e785f0d7cfa3bfaf1d2d58e7cdc74f4304fd973a956601927719d6d370dd57a

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

    8ee018331e95a610680a789192a9d362

    SHA1

    e1fba0ac3f3d8689acf6c2ee26afdfd0c8e02df9

    SHA256

    94354ea6703c5ef5fa052aeb1d29715587d80300858ebc063a61c02b7e6e9575

    SHA512

    4b89b5adc77641e497eda7db62a48fee7b4b8dda83bff637cac850645d31deb93aafee5afeb41390e07fd16505a63f418b6cb153a1d35777c483e2d6d3f783b4

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

    e0e8dfa46f05977c9d4682bf7efcddc2

    SHA1

    1169188d013349d9f38fbe1bf1d0276ac876d09b

    SHA256

    39bbb6ea063dd5bc6ab9347ead3cf32f33a70d2dec464249dc65640ca0387a72

    SHA512

    cf808d055bd00d7b7ea0405a09f99f878ef4b2f4e52c061eaf1af27978e6780819f5d550a0fc857f26540835753f69104d2d7a5b3e0f6ecf70f7800631247c1b

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

    825b732b6e2fd98346f22c3b89a75392

    SHA1

    10633534c7fe2bc1d81e63149b5a4466326e2b20

    SHA256

    db3642adc37a182493cc36f6a85f3dd17988ff5896791aea9ab017c2a29882ac

    SHA512

    e4ec54c67da18f4b6d3e4191965eb0ed23f8edc3d9fbef9fbea18d216643c535fb5156990e85ce08cd18d2b09b98559810781efe20ac0cb92066e499907c066f

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

    825b732b6e2fd98346f22c3b89a75392

    SHA1

    10633534c7fe2bc1d81e63149b5a4466326e2b20

    SHA256

    db3642adc37a182493cc36f6a85f3dd17988ff5896791aea9ab017c2a29882ac

    SHA512

    e4ec54c67da18f4b6d3e4191965eb0ed23f8edc3d9fbef9fbea18d216643c535fb5156990e85ce08cd18d2b09b98559810781efe20ac0cb92066e499907c066f

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

    e0e8dfa46f05977c9d4682bf7efcddc2

    SHA1

    1169188d013349d9f38fbe1bf1d0276ac876d09b

    SHA256

    39bbb6ea063dd5bc6ab9347ead3cf32f33a70d2dec464249dc65640ca0387a72

    SHA512

    cf808d055bd00d7b7ea0405a09f99f878ef4b2f4e52c061eaf1af27978e6780819f5d550a0fc857f26540835753f69104d2d7a5b3e0f6ecf70f7800631247c1b

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

    f4b8e6e7ca32ed5ab1653cc327475cc0

    SHA1

    e7c30740b8cc28534d398ff4036e0cc6649619ce

    SHA256

    34abcff7dd7e3157dc78b58d9fc7ce57be556a550bcc6a2b2257c9b08107cbe2

    SHA512

    edc72a374b28b984d8d3ced5a27ddb1a91e843ab873f7b700eecea87c0dfea961359f7931ea127ee2b8edc2602968795c6b9f121622dffca23241736c44d8ae2

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

    b608d407fc15adea97c26936bc6f03f6

    SHA1

    953e7420801c76393902c0d6bb56148947e41571

    SHA256

    b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

    SHA512

    cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

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

    055c8c5c47424f3c2e7a6fc2ee904032

    SHA1

    5952781d22cff35d94861fac25d89a39af6d0a87

    SHA256

    531b3121bd59938df4933972344d936a67e75d8b1741807a8a51c898d185dd2a

    SHA512

    c2772893695f49cb185add62c35284779b20d45adc01184f1912613fa8b2d70c8e785f0d7cfa3bfaf1d2d58e7cdc74f4304fd973a956601927719d6d370dd57a

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

    8ee018331e95a610680a789192a9d362

    SHA1

    e1fba0ac3f3d8689acf6c2ee26afdfd0c8e02df9

    SHA256

    94354ea6703c5ef5fa052aeb1d29715587d80300858ebc063a61c02b7e6e9575

    SHA512

    4b89b5adc77641e497eda7db62a48fee7b4b8dda83bff637cac850645d31deb93aafee5afeb41390e07fd16505a63f418b6cb153a1d35777c483e2d6d3f783b4

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

    1d2a39112767125a8ee84c1b63d070fe

    SHA1

    f6ae7e6351d8c16cf470d59a481ed053cfc55dd5

    SHA256

    5f59627da5032edd29bca3798f9d9e67f441bec8a4fc3410360eb9a7bf567386

    SHA512

    cba766ca4b875dd804d32289e018140fbd0a7ec439188571d05ed4b7ac2f64c11217756e2e42cf85d76abdc2456f08f67fb666aa9d0bdbc73996842f5a1e5efa

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

    1d2a39112767125a8ee84c1b63d070fe

    SHA1

    f6ae7e6351d8c16cf470d59a481ed053cfc55dd5

    SHA256

    5f59627da5032edd29bca3798f9d9e67f441bec8a4fc3410360eb9a7bf567386

    SHA512

    cba766ca4b875dd804d32289e018140fbd0a7ec439188571d05ed4b7ac2f64c11217756e2e42cf85d76abdc2456f08f67fb666aa9d0bdbc73996842f5a1e5efa

  • memory/1124-144-0x0000000000000000-mapping.dmp
  • memory/1124-150-0x0000000000330000-0x0000000000A32000-memory.dmp
    Filesize

    7.0MB

  • memory/1124-151-0x0000000000330000-0x0000000000A32000-memory.dmp
    Filesize

    7.0MB

  • memory/1124-149-0x0000000077140000-0x00000000772CE000-memory.dmp
    Filesize

    1.6MB

  • memory/1124-148-0x0000000000330000-0x0000000000A32000-memory.dmp
    Filesize

    7.0MB

  • memory/1124-147-0x0000000000330000-0x0000000000A32000-memory.dmp
    Filesize

    7.0MB

  • memory/1164-141-0x00000000011E0000-0x00000000018E2000-memory.dmp
    Filesize

    7.0MB

  • memory/1164-140-0x00000000011E0000-0x00000000018E2000-memory.dmp
    Filesize

    7.0MB

  • memory/1164-142-0x00000000011E0000-0x00000000018E2000-memory.dmp
    Filesize

    7.0MB

  • memory/1164-143-0x00000000011E0000-0x00000000018E2000-memory.dmp
    Filesize

    7.0MB

  • memory/1164-139-0x0000000077140000-0x00000000772CE000-memory.dmp
    Filesize

    1.6MB

  • memory/1164-120-0x0000000000000000-mapping.dmp
  • memory/2324-123-0x0000000000000000-mapping.dmp
  • memory/2796-115-0x0000000000A20000-0x0000000001114000-memory.dmp
    Filesize

    7.0MB

  • memory/2796-116-0x0000000000A20000-0x0000000001114000-memory.dmp
    Filesize

    7.0MB

  • memory/2796-117-0x0000000077140000-0x00000000772CE000-memory.dmp
    Filesize

    1.6MB

  • memory/2796-118-0x0000000000A20000-0x0000000001114000-memory.dmp
    Filesize

    7.0MB

  • memory/2796-119-0x0000000000A20000-0x0000000001114000-memory.dmp
    Filesize

    7.0MB

  • memory/4064-138-0x0000000000000000-mapping.dmp