Analysis

  • max time kernel
    118s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    28-12-2023 20:13

General

  • Target

    f51b489073e0a0e9fff1a9d8f0e09185.exe

  • Size

    5.4MB

  • MD5

    f51b489073e0a0e9fff1a9d8f0e09185

  • SHA1

    c8a2cf999334870c51ead8e366ce51ee916b6e3f

  • SHA256

    e4c2460165de097c187d1a646cfc513d32a9130a0e3fe40a359f82b54987bb23

  • SHA512

    c724d3245868a6a6a90ad0f169ba39857f192809ac0e0b7919ebd53ca7669080703571fd235e129130ddc157286534905dcb6ca7e951e7d8ce3347184eb89484

  • SSDEEP

    98304:7aK90IOLFoFMy2Wt6E8jtpOEv9NdHkyLhiCyIgFfffHyBUMUbv5wOJERH:X9POJa2WD69Nay8Mg1ffS2/K4ER

Malware Config

Signatures

  • Growtopia

    Growtopa is an opensource modular stealer written in C#.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • VMProtect packed file 4 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Modifies system certificate store 2 TTPs 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f51b489073e0a0e9fff1a9d8f0e09185.exe
    "C:\Users\Admin\AppData\Local\Temp\f51b489073e0a0e9fff1a9d8f0e09185.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2508
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\MAC.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2600
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell get-NetAdapter
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2848
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\GenReg.exe" [29548]--[441325395]--[14774,14774c,14774w,14774wc]--[330994046,330994046c]
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3068
      • C:\Users\Admin\AppData\Local\Temp\GenReg.exe
        C:\Users\Admin\AppData\Local\Temp\GenReg.exe [29548]--[441325395]--[14774,14774c,14774w,14774wc]--[330994046,330994046c]
        3⤵
        • Executes dropped EXE
        PID:2184

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\AAP-Bypass.reg

    Filesize

    394B

    MD5

    fdb73e31fa606345617f0f2a91daf564

    SHA1

    c2f44afe74166cfaa6683003d40918119861aa1d

    SHA256

    bd7de6b7ab15b5da80ebaa32e93c8bc9986764b0e75681c1ed108e78a8a7b9a4

    SHA512

    86885f52fc645f889ef5fc8b7e40b47ddbd29f79c068da3bb19bc8733d6d4813c2107d5537f1bf8d9b87b7fdb6363ec7bcab1b11f4ea751dce2a79f11bb6bbb9

  • C:\Users\Admin\AppData\Local\Temp\Cab6F58.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\MAC.bat

    Filesize

    42B

    MD5

    56120ea7d97e691243935b98d32f4b65

    SHA1

    f89f6249a946882410de06765ec07e11f2608177

    SHA256

    1d6a29ec8b4f624b3246450c2a34ae1a8b3e35cdc7f3fa86a680e14169e01a67

    SHA512

    4cda70d6283fc48105a64c157c50fbe61bc5c77aa0f28e8c1176943cfdfa4345df77f09573d49ff896830cfc8315547a453a7bcbe68c00dd140b99ead94c8b5b

  • C:\Users\Admin\AppData\Local\Temp\MAC.zb

    Filesize

    423B

    MD5

    dfd4ca0036d729b95ec5a67081801628

    SHA1

    d213288411a38c9b60b606321e5617180805a7c3

    SHA256

    663431f49b93a7cc72370896bb20920edae4764b1fac6da2c31717c0ebdfd1e4

    SHA512

    c844edabab2dac76b0ee6f3203dca97a9009443df3466621616e2536570c1be04177e5080d83330440d2e4b6b58de604d93f040fb49cd109e4849fcc383a5316

  • C:\Users\Admin\AppData\Local\Temp\Tar7055.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

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

    Filesize

    9KB

    MD5

    511b735aafc5cfcfd307b350b6099c32

    SHA1

    68e0c6c6c504a45ad491150017fbfcc1e1c4f91d

    SHA256

    51c145f8bcc871263f1ceb7a85ed43915aae7b79aa175817c5d8c6edfb712ace

    SHA512

    af347e6623849c452663066a919db1d98aa28b4f4f7149a2b1209e02d56b9e79658cbb02416dd0a0bce40c622308f8244457c1056fa8c4d06f189800867bf1df

  • memory/2184-130-0x00000000737C0000-0x0000000073EAE000-memory.dmp

    Filesize

    6.9MB

  • memory/2184-128-0x0000000004760000-0x00000000047A0000-memory.dmp

    Filesize

    256KB

  • memory/2184-127-0x0000000000C40000-0x0000000000C48000-memory.dmp

    Filesize

    32KB

  • memory/2184-126-0x00000000737C0000-0x0000000073EAE000-memory.dmp

    Filesize

    6.9MB

  • memory/2508-8-0x0000000077AC0000-0x0000000077AC1000-memory.dmp

    Filesize

    4KB

  • memory/2508-107-0x0000000001150000-0x0000000001A00000-memory.dmp

    Filesize

    8.7MB

  • memory/2508-0-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/2508-5-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/2508-6-0x0000000001150000-0x0000000001A00000-memory.dmp

    Filesize

    8.7MB

  • memory/2508-2-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/2508-3-0x0000000001150000-0x0000000001A00000-memory.dmp

    Filesize

    8.7MB

  • memory/2508-132-0x0000000001150000-0x0000000001A00000-memory.dmp

    Filesize

    8.7MB

  • memory/2848-114-0x0000000002680000-0x00000000026C0000-memory.dmp

    Filesize

    256KB

  • memory/2848-115-0x0000000002680000-0x00000000026C0000-memory.dmp

    Filesize

    256KB

  • memory/2848-113-0x0000000073900000-0x0000000073EAB000-memory.dmp

    Filesize

    5.7MB

  • memory/2848-116-0x0000000073900000-0x0000000073EAB000-memory.dmp

    Filesize

    5.7MB

  • memory/2848-112-0x0000000073900000-0x0000000073EAB000-memory.dmp

    Filesize

    5.7MB