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Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    12-04-2024 13:18

General

  • Target

    stub_tor.exe

  • Size

    7.8MB

  • MD5

    c76390d9e1052d9e708940d67b5c135d

  • SHA1

    a370a73a9dd746584428e8a939288ecffd3c80f7

  • SHA256

    caf48b67e7bb94a178426fc7ce6b9ed50ffb2f3813a7c68900f21bfffb24e44f

  • SHA512

    4d2d38d8719cdac8a406cfa96944ee99d2d926511e64d6b6aa964d40d0d9ddb1dc6e4e6253bcb1e77b32613c0b4409ab32ea54c476018fee963574edb043dd3b

  • SSDEEP

    196608:oIRcbH4jSteTGvExwhzav1yo31CPwDv3uFZjeg2EeJUO9WLQkDxtw3iFFrS6XOf:odHsfuExwZ6v1CPwDv3uFteg2EeJUO9E

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

7sbl4dpbubwjjghdquwg47fyq7rookd4bgm2ypm2kjzkivd7tomvczqd.onion:440

Attributes
  • communication_password

    4124bc0a9335c27f086f24ba207a4912

  • install_dir

    Minecraft

  • install_file

    Runtime_Broker

  • tor_process

    tor

Signatures

  • BitRAT

    BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

  • ACProtect 1.3x - 1.4x DLL software 7 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 24 IoCs
  • UPX packed file 43 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 3 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: RenamesItself 28 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\stub_tor.exe
    "C:\Users\Admin\AppData\Local\Temp\stub_tor.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:396
    • C:\Users\Admin\AppData\Local\a5b260eb\tor\tor.exe
      "C:\Users\Admin\AppData\Local\a5b260eb\tor\tor.exe" -f torrc
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:456
    • C:\Users\Admin\AppData\Local\a5b260eb\tor\tor.exe
      "C:\Users\Admin\AppData\Local\a5b260eb\tor\tor.exe" -f torrc
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:3928
    • C:\Users\Admin\AppData\Local\a5b260eb\tor\tor.exe
      "C:\Users\Admin\AppData\Local\a5b260eb\tor\tor.exe" -f torrc
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:2484

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\data\cached-certs
    Filesize

    20KB

    MD5

    81e73a37f2df7bb6f40ca8c299852cf6

    SHA1

    3563b4c90757b002f4c068c52ab02d39b6f4fd49

    SHA256

    f8b70035935a3800acec3218225eea0dbf27756cddfc2201b3f083d8a61d76b9

    SHA512

    520984499f2cd43efa3904c0f7e6945b40849cd89c71d4816fa835ca4951be6a049e63509b1f3761ea49bd6e6be27f5e14f568f26abb46f75e0e8d71d785b971

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\data\cached-microdesc-consensus
    Filesize

    2.7MB

    MD5

    bd169440e5172999c9752977e42dd84c

    SHA1

    74e4b0c0a08e16fb76ef1d0d64b0cfdd8d8ce1a4

    SHA256

    1b9122b9faabbeccac50893248c8bb728ebf224a011a7f4db5d6f06e59e9e995

    SHA512

    8d72f5a5c0fb829db8a75d003a90f668918cc4bc13f4c086c4dec3efa30af0583ccf82af06d3bfb0f16086dcc702c81947e16ea8cda78753c747cb8dcee0cbfd

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\data\cached-microdescs.new
    Filesize

    20.3MB

    MD5

    4ee5dd15e7a651f278ddc74e005fce05

    SHA1

    747db2181ccc08e395a5e795aa0d2affc1c23b83

    SHA256

    5eb26c87e0e1bcdb38069e0de6b43721c3662e6cc50de6457c2514b9e230ba96

    SHA512

    83f3944f3fd57c640f3a7a890e2a52cb6592f2ffeb682e312190a3a63178f78669698881a010a8595b132764d382b56cd318a3f3fb835bfe7e2250a13b0e42f3

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\data\cached-microdescs.new
    Filesize

    5.6MB

    MD5

    f11a23bc92e8b06b1cdea98e3fa1740c

    SHA1

    26995bb93ab52b872d5761162ac86850cb3003c0

    SHA256

    69a0ff5f776a0edf3f6df514da7b2e5445444a60586ed3dbf9450a0938c86618

    SHA512

    3a40305471ea2e1e3bb25d71afef0256988d96d6771711cd6df7eeeb3b118a761047e31d0068b5b1d4cfb32663474e01cba8e651a1b0989c5b1219ebcb8e577c

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\data\state
    Filesize

    232B

    MD5

    cc0a1f873584ef75e9eead12e8c8fb55

    SHA1

    cc75dc2fe43204638815f695564cc0a09b2da9c0

    SHA256

    48f0554225e8c723935d21aa128006b1703fb43a925d4aeed207c4a655932558

    SHA512

    d6730d2765fd642b479bb928e5d1286938c28575371e58915192152bedc57e99f53f23c7d7fb16e2782ba85ddb15f641eb74b0d1dc43a85ef2b2d487046f1a81

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\libcrypto-1_1.dll
    Filesize

    1.7MB

    MD5

    2384a02c4a1f7ec481adde3a020607d3

    SHA1

    7e848d35a10bf9296c8fa41956a3daa777f86365

    SHA256

    c8db0ff0f7047ed91b057005e86ad3a23eae616253313aa047c560d9eb398369

    SHA512

    1ac74dd2d863acd7415ef8b9490a5342865462fbabdad0645da22424b0d56f5e9c389a3d7c41386f2414d6c4715c79a6ddecb6e6cff29e98319e1fd1060f4503

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\libevent-2-1-6.dll
    Filesize

    366KB

    MD5

    099983c13bade9554a3c17484e5481f1

    SHA1

    a84e69ad9722f999252d59d0ed9a99901a60e564

    SHA256

    b65f9aa0c7912af64bd9b05e9322e994339a11b0c8907e6a6166d7b814bda838

    SHA512

    89f1a963de77873296395662d4150e3eff7a2d297fb9ec54ec06aa2e40d41e5f4fc4611e9bc34126d760c9134f2907fea3bebdf2fbbd7eaddad99f8e4be1f5e2

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\libgcc_s_sjlj-1.dll
    Filesize

    286KB

    MD5

    b0d98f7157d972190fe0759d4368d320

    SHA1

    5715a533621a2b642aad9616e603c6907d80efc4

    SHA256

    2922193133dabab5b82088d4e87484e2fac75e9e0c765dacaf22eb5f4f18b0c5

    SHA512

    41ce56c428158533bf8b8ffe0a71875b5a3abc549b88d7d3e69acc6080653abea344d6d66fff39c04bf019fcaa295768d620377d85a933ddaf17f3d90df29496

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\libssl-1_1.dll
    Filesize

    439KB

    MD5

    c88826ac4bb879622e43ead5bdb95aeb

    SHA1

    87d29853649a86f0463bfd9ad887b85eedc21723

    SHA256

    c4d898b1a4285a45153af9ed88d79aa2a073dcb7225961b6b276b532b4d18b6f

    SHA512

    f733041ef35b9b8058fbcf98faa0d1fea5c0858fea941ecebbe9f083cd73e3e66323afffd8d734097fcdd5e6e59db4d94f51fca5874edbcd2a382d9ba6cd97b3

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\libssp-0.dll
    Filesize

    88KB

    MD5

    2c916456f503075f746c6ea649cf9539

    SHA1

    fa1afc1f3d728c89b2e90e14ca7d88b599580a9d

    SHA256

    cbb5236d923d4f4baf2f0d2797c72a2cbae42ef7ac0acce786daf5fdc5b456e6

    SHA512

    1c1995e1aa7c33c597c64122395275861d9219e46d45277d4f1768a2e06227b353d5d77d6b7cb655082dc6fb9736ad6f7cfcc0c90e02776e27d50857e792e3fd

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\libwinpthread-1.dll
    Filesize

    188KB

    MD5

    d407cc6d79a08039a6f4b50539e560b8

    SHA1

    21171adbc176dc19aaa5e595cd2cd4bd1dfd0c71

    SHA256

    92cfd0277c8781a15a0f17b7aee6cff69631b9606a001101631f04b3381efc4e

    SHA512

    378a10fed915591445d97c6d04e82d28008d8ea65e0e40c142b8ee59867035d561d4e103495c8f0d9c19b51597706ce0b450c25516aa0f1744579ffcd097ae0c

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\tor.exe
    Filesize

    973KB

    MD5

    5cfe61ff895c7daa889708665ef05d7b

    SHA1

    5e58efe30406243fbd58d4968b0492ddeef145f2

    SHA256

    f9c1d18b50ce7484bf212cb61a9035602cfb90ebdfe66a077b9f6df73196a9f5

    SHA512

    43b6f10391a863a21f70e05cee41900729c7543750e118ff5d74c0cac3d1383f10bcb73eade2a28b555a393cada4795e204246129b01ad9177d1167827dd68da

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\torrc
    Filesize

    157B

    MD5

    8ea874223f853aac5ea469ccc164a8f9

    SHA1

    70d31011547870c9f930496dbf9fb7ec296a8c28

    SHA256

    95e134044f370b2a96408d581f3c0381fe95388dae27c6d9598f44dc7d72b9ed

    SHA512

    fd1dc20219fbf4863926d90b5a2127b65e165656eac4493a80288d0c57fc309ed998b5d30fe8ce313987ee367fc4fe9b6026ff32d4391950d7f26ca7b6fdcdf2

  • C:\Users\Admin\AppData\Local\a5b260eb\tor\zlib1.dll
    Filesize

    52KB

    MD5

    add33041af894b67fe34e1dc819b7eb6

    SHA1

    6db46eb021855a587c95479422adcc774a272eeb

    SHA256

    8688bd7ca55dcc0c23c429762776a0a43fe5b0332dfd5b79ef74e55d4bbc1183

    SHA512

    bafc441198d03f0e7fe804bab89283c389d38884d0f87d81b11950a9b79fcbf7b32be4bb16f4fcd9179b66f865c563c172a46b4514a6087ef0af64425a4b2cfa

  • memory/396-49-0x00000000733E0000-0x000000007341C000-memory.dmp
    Filesize

    240KB

  • memory/396-186-0x0000000073C70000-0x0000000073CAC000-memory.dmp
    Filesize

    240KB

  • memory/396-91-0x0000000074840000-0x000000007487C000-memory.dmp
    Filesize

    240KB

  • memory/396-0-0x0000000000400000-0x0000000000BD8000-memory.dmp
    Filesize

    7.8MB

  • memory/396-1-0x0000000074870000-0x00000000748AC000-memory.dmp
    Filesize

    240KB

  • memory/456-74-0x0000000000B60000-0x0000000000F64000-memory.dmp
    Filesize

    4.0MB

  • memory/456-41-0x00000000739A0000-0x00000000739E9000-memory.dmp
    Filesize

    292KB

  • memory/456-45-0x0000000001E60000-0x0000000001EE8000-memory.dmp
    Filesize

    544KB

  • memory/456-46-0x0000000073DC0000-0x0000000073E88000-memory.dmp
    Filesize

    800KB

  • memory/456-56-0x0000000000B60000-0x0000000000F64000-memory.dmp
    Filesize

    4.0MB

  • memory/456-64-0x0000000000B60000-0x0000000000F64000-memory.dmp
    Filesize

    4.0MB

  • memory/456-65-0x0000000000B60000-0x0000000000F64000-memory.dmp
    Filesize

    4.0MB

  • memory/456-73-0x0000000001E60000-0x0000000001EE8000-memory.dmp
    Filesize

    544KB

  • memory/456-43-0x0000000073890000-0x000000007399A000-memory.dmp
    Filesize

    1.0MB

  • memory/456-83-0x0000000000B60000-0x0000000000F64000-memory.dmp
    Filesize

    4.0MB

  • memory/456-42-0x0000000001E60000-0x0000000001EA9000-memory.dmp
    Filesize

    292KB

  • memory/456-40-0x00000000739F0000-0x0000000073CBF000-memory.dmp
    Filesize

    2.8MB

  • memory/456-96-0x0000000000B60000-0x0000000000F64000-memory.dmp
    Filesize

    4.0MB

  • memory/456-114-0x0000000000B60000-0x0000000000F64000-memory.dmp
    Filesize

    4.0MB

  • memory/456-123-0x0000000000B60000-0x0000000000F64000-memory.dmp
    Filesize

    4.0MB

  • memory/456-131-0x0000000000B60000-0x0000000000F64000-memory.dmp
    Filesize

    4.0MB

  • memory/456-165-0x0000000000B60000-0x0000000000F64000-memory.dmp
    Filesize

    4.0MB

  • memory/456-34-0x0000000000B60000-0x0000000000F64000-memory.dmp
    Filesize

    4.0MB

  • memory/456-39-0x0000000073CC0000-0x0000000073CE4000-memory.dmp
    Filesize

    144KB

  • memory/456-38-0x0000000073CF0000-0x0000000073DBE000-memory.dmp
    Filesize

    824KB

  • memory/456-44-0x0000000073800000-0x0000000073888000-memory.dmp
    Filesize

    544KB

  • memory/2484-200-0x0000000073870000-0x00000000738B9000-memory.dmp
    Filesize

    292KB

  • memory/2484-203-0x00000000723A0000-0x0000000072428000-memory.dmp
    Filesize

    544KB

  • memory/2484-234-0x0000000072540000-0x0000000072608000-memory.dmp
    Filesize

    800KB

  • memory/2484-225-0x0000000000B60000-0x0000000000F64000-memory.dmp
    Filesize

    4.0MB

  • memory/2484-210-0x00000000738C0000-0x0000000073B8F000-memory.dmp
    Filesize

    2.8MB

  • memory/2484-201-0x0000000073840000-0x0000000073864000-memory.dmp
    Filesize

    144KB

  • memory/2484-199-0x0000000072540000-0x0000000072608000-memory.dmp
    Filesize

    800KB

  • memory/2484-209-0x00000000722D0000-0x000000007239E000-memory.dmp
    Filesize

    824KB

  • memory/2484-202-0x0000000072430000-0x000000007253A000-memory.dmp
    Filesize

    1.0MB

  • memory/2484-204-0x0000000001170000-0x00000000011F8000-memory.dmp
    Filesize

    544KB

  • memory/3928-181-0x0000000073CC0000-0x0000000073CE4000-memory.dmp
    Filesize

    144KB

  • memory/3928-175-0x0000000073DC0000-0x0000000073E88000-memory.dmp
    Filesize

    800KB

  • memory/3928-173-0x00000000739F0000-0x0000000073CBF000-memory.dmp
    Filesize

    2.8MB

  • memory/3928-177-0x0000000073CF0000-0x0000000073DBE000-memory.dmp
    Filesize

    824KB

  • memory/3928-179-0x00000000739A0000-0x00000000739E9000-memory.dmp
    Filesize

    292KB

  • memory/3928-171-0x0000000000B60000-0x0000000000F64000-memory.dmp
    Filesize

    4.0MB

  • memory/3928-185-0x0000000073800000-0x0000000073888000-memory.dmp
    Filesize

    544KB

  • memory/3928-183-0x0000000073890000-0x000000007399A000-memory.dmp
    Filesize

    1.0MB