Analysis

  • max time kernel
    50s
  • max time network
    54s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    02-10-2022 23:01

General

  • Target

    f842d68c4fc549af6ee798769fc0e2eaf3f50f2207d7aadd86b11c1826ef31d6.exe

  • Size

    740KB

  • MD5

    3a965754e28255e17381331c733a5062

  • SHA1

    e33bf2c153528e3ee8a5e5b868062b1b8b455987

  • SHA256

    f842d68c4fc549af6ee798769fc0e2eaf3f50f2207d7aadd86b11c1826ef31d6

  • SHA512

    ec8e7a3670ed21fc6892ca50268f2e343c7eaa6cc33852753c4924e40b1d1bb69a2657732da12f30ac859535b6696b5c3925636fbc6389257eb478179fd3f98f

  • SSDEEP

    6144:K7DUbXf3vrcaqKahsEmtkjIjc2x7bxFVApzL2HcihJ+zzaSfAI0Th5mB/WXPD5Qm:K7gbXf3vriQ7lbypPA9h4XaSfhVo6fv

Malware Config

Signatures

  • ISR Stealer

    ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

  • ISR Stealer payload 15 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • Nirsoft 2 IoCs
  • Executes dropped EXE 3 IoCs
  • UPX packed file 16 IoCs

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

  • Loads dropped DLL 8 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f842d68c4fc549af6ee798769fc0e2eaf3f50f2207d7aadd86b11c1826ef31d6.exe
    "C:\Users\Admin\AppData\Local\Temp\f842d68c4fc549af6ee798769fc0e2eaf3f50f2207d7aadd86b11c1826ef31d6.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:560
    • C:\Users\Admin\AppData\Local\Temp\f842d68c4fc549af6ee798769fc0e2eaf3f50f2207d7aadd86b11c1826ef31d6.exe
      "C:\Users\Admin\AppData\Local\Temp\f842d68c4fc549af6ee798769fc0e2eaf3f50f2207d7aadd86b11c1826ef31d6.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:952
      • C:\Users\Admin\AppData\Local\Temp\QLUQL.exe
        "C:\Users\Admin\AppData\Local\Temp\QLUQL.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Modifies system certificate store
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:672
        • C:\Users\Admin\AppData\Local\Temp\QLUQL.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\izGbnYURxF.ini"
          4⤵
          • Executes dropped EXE
          PID:640
        • C:\Users\Admin\AppData\Local\Temp\QLUQL.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\g8PeqvOjiC.ini"
          4⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook accounts
          PID:1124
    • C:\Users\Admin\AppData\Local\Temp\f842d68c4fc549af6ee798769fc0e2eaf3f50f2207d7aadd86b11c1826ef31d6.exe
      "C:\Users\Admin\AppData\Local\Temp\f842d68c4fc549af6ee798769fc0e2eaf3f50f2207d7aadd86b11c1826ef31d6.exe"
      2⤵
      • Loads dropped DLL
      PID:1368

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\QLUQL.exe
    Filesize

    260KB

    MD5

    82ce6a2616f9b8e7c9037df683083524

    SHA1

    bcdef4e3b26634d84f5c02148a7b720a3c434407

    SHA256

    5f178dd7febe66cf37bb293133a99315fc3b8b3b903655381a7404e79a969b42

    SHA512

    10d326f05eaa5e16b7d087fb54ce59a772e67f00b33b82356b47d73ad775fff74588d4bcee3760430c5de49d9220ca4f1e1eeacf87caad11d55e4fc5be133a4c

  • C:\Users\Admin\AppData\Local\Temp\QLUQL.exe
    Filesize

    260KB

    MD5

    82ce6a2616f9b8e7c9037df683083524

    SHA1

    bcdef4e3b26634d84f5c02148a7b720a3c434407

    SHA256

    5f178dd7febe66cf37bb293133a99315fc3b8b3b903655381a7404e79a969b42

    SHA512

    10d326f05eaa5e16b7d087fb54ce59a772e67f00b33b82356b47d73ad775fff74588d4bcee3760430c5de49d9220ca4f1e1eeacf87caad11d55e4fc5be133a4c

  • C:\Users\Admin\AppData\Local\Temp\QLUQL.exe
    Filesize

    260KB

    MD5

    82ce6a2616f9b8e7c9037df683083524

    SHA1

    bcdef4e3b26634d84f5c02148a7b720a3c434407

    SHA256

    5f178dd7febe66cf37bb293133a99315fc3b8b3b903655381a7404e79a969b42

    SHA512

    10d326f05eaa5e16b7d087fb54ce59a772e67f00b33b82356b47d73ad775fff74588d4bcee3760430c5de49d9220ca4f1e1eeacf87caad11d55e4fc5be133a4c

  • C:\Users\Admin\AppData\Local\Temp\QLUQL.exe
    Filesize

    260KB

    MD5

    82ce6a2616f9b8e7c9037df683083524

    SHA1

    bcdef4e3b26634d84f5c02148a7b720a3c434407

    SHA256

    5f178dd7febe66cf37bb293133a99315fc3b8b3b903655381a7404e79a969b42

    SHA512

    10d326f05eaa5e16b7d087fb54ce59a772e67f00b33b82356b47d73ad775fff74588d4bcee3760430c5de49d9220ca4f1e1eeacf87caad11d55e4fc5be133a4c

  • C:\Users\Admin\AppData\Local\Temp\izGbnYURxF.ini
    Filesize

    5B

    MD5

    d1ea279fb5559c020a1b4137dc4de237

    SHA1

    db6f8988af46b56216a6f0daf95ab8c9bdb57400

    SHA256

    fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

    SHA512

    720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

  • \Users\Admin\AppData\Local\Temp\QLUQL.exe
    Filesize

    260KB

    MD5

    82ce6a2616f9b8e7c9037df683083524

    SHA1

    bcdef4e3b26634d84f5c02148a7b720a3c434407

    SHA256

    5f178dd7febe66cf37bb293133a99315fc3b8b3b903655381a7404e79a969b42

    SHA512

    10d326f05eaa5e16b7d087fb54ce59a772e67f00b33b82356b47d73ad775fff74588d4bcee3760430c5de49d9220ca4f1e1eeacf87caad11d55e4fc5be133a4c

  • \Users\Admin\AppData\Local\Temp\QLUQL.exe
    Filesize

    260KB

    MD5

    82ce6a2616f9b8e7c9037df683083524

    SHA1

    bcdef4e3b26634d84f5c02148a7b720a3c434407

    SHA256

    5f178dd7febe66cf37bb293133a99315fc3b8b3b903655381a7404e79a969b42

    SHA512

    10d326f05eaa5e16b7d087fb54ce59a772e67f00b33b82356b47d73ad775fff74588d4bcee3760430c5de49d9220ca4f1e1eeacf87caad11d55e4fc5be133a4c

  • \Users\Admin\AppData\Local\Temp\QLUQL.exe
    Filesize

    260KB

    MD5

    82ce6a2616f9b8e7c9037df683083524

    SHA1

    bcdef4e3b26634d84f5c02148a7b720a3c434407

    SHA256

    5f178dd7febe66cf37bb293133a99315fc3b8b3b903655381a7404e79a969b42

    SHA512

    10d326f05eaa5e16b7d087fb54ce59a772e67f00b33b82356b47d73ad775fff74588d4bcee3760430c5de49d9220ca4f1e1eeacf87caad11d55e4fc5be133a4c

  • \Users\Admin\AppData\Local\Temp\QLUQL.exe
    Filesize

    260KB

    MD5

    82ce6a2616f9b8e7c9037df683083524

    SHA1

    bcdef4e3b26634d84f5c02148a7b720a3c434407

    SHA256

    5f178dd7febe66cf37bb293133a99315fc3b8b3b903655381a7404e79a969b42

    SHA512

    10d326f05eaa5e16b7d087fb54ce59a772e67f00b33b82356b47d73ad775fff74588d4bcee3760430c5de49d9220ca4f1e1eeacf87caad11d55e4fc5be133a4c

  • \Users\Admin\AppData\Local\Temp\QLUQL.exe
    Filesize

    260KB

    MD5

    82ce6a2616f9b8e7c9037df683083524

    SHA1

    bcdef4e3b26634d84f5c02148a7b720a3c434407

    SHA256

    5f178dd7febe66cf37bb293133a99315fc3b8b3b903655381a7404e79a969b42

    SHA512

    10d326f05eaa5e16b7d087fb54ce59a772e67f00b33b82356b47d73ad775fff74588d4bcee3760430c5de49d9220ca4f1e1eeacf87caad11d55e4fc5be133a4c

  • \Users\Admin\AppData\Local\Temp\QLUQL.exe
    Filesize

    260KB

    MD5

    82ce6a2616f9b8e7c9037df683083524

    SHA1

    bcdef4e3b26634d84f5c02148a7b720a3c434407

    SHA256

    5f178dd7febe66cf37bb293133a99315fc3b8b3b903655381a7404e79a969b42

    SHA512

    10d326f05eaa5e16b7d087fb54ce59a772e67f00b33b82356b47d73ad775fff74588d4bcee3760430c5de49d9220ca4f1e1eeacf87caad11d55e4fc5be133a4c

  • \Users\Admin\AppData\Local\Temp\QLUQL.exe
    Filesize

    260KB

    MD5

    82ce6a2616f9b8e7c9037df683083524

    SHA1

    bcdef4e3b26634d84f5c02148a7b720a3c434407

    SHA256

    5f178dd7febe66cf37bb293133a99315fc3b8b3b903655381a7404e79a969b42

    SHA512

    10d326f05eaa5e16b7d087fb54ce59a772e67f00b33b82356b47d73ad775fff74588d4bcee3760430c5de49d9220ca4f1e1eeacf87caad11d55e4fc5be133a4c

  • \Users\Admin\AppData\Local\Temp\dup2patcher.dll
    Filesize

    55KB

    MD5

    43bcd632e19ac3fdc43e7958465ce835

    SHA1

    30454241e95b78ddb125a4c784f160609589ee5f

    SHA256

    7694627600115240b503f214cbfb9106415802c345e982c3bf9c8d05910a1a7c

    SHA512

    ffe7507bcc2413a5b846ec62b9edd3ec94d79a2fd3ecaf4ce2ddb96a7d42facdfa9aabd84d06e15ab644ae478715c566a91e9bb8ba12fc9ff9a3b8390ca6d886

  • memory/560-59-0x00000000024F0000-0x00000000025AA000-memory.dmp
    Filesize

    744KB

  • memory/560-56-0x00000000005C0000-0x00000000005C4000-memory.dmp
    Filesize

    16KB

  • memory/560-58-0x00000000005C0000-0x00000000005C4000-memory.dmp
    Filesize

    16KB

  • memory/560-57-0x00000000005C0000-0x00000000005C4000-memory.dmp
    Filesize

    16KB

  • memory/640-103-0x00000000004512E0-mapping.dmp
  • memory/640-110-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/640-109-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/640-108-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/640-107-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/640-102-0x0000000000400000-0x0000000000453000-memory.dmp
    Filesize

    332KB

  • memory/672-96-0x0000000000000000-mapping.dmp
  • memory/952-71-0x0000000000400000-0x0000000000449000-memory.dmp
    Filesize

    292KB

  • memory/952-64-0x0000000000400000-0x0000000000449000-memory.dmp
    Filesize

    292KB

  • memory/952-122-0x0000000000400000-0x0000000000449000-memory.dmp
    Filesize

    292KB

  • memory/952-86-0x0000000000400000-0x0000000000449000-memory.dmp
    Filesize

    292KB

  • memory/952-85-0x0000000076041000-0x0000000076043000-memory.dmp
    Filesize

    8KB

  • memory/952-66-0x0000000000400000-0x0000000000449000-memory.dmp
    Filesize

    292KB

  • memory/952-63-0x0000000000400000-0x0000000000449000-memory.dmp
    Filesize

    292KB

  • memory/952-67-0x0000000000400000-0x0000000000449000-memory.dmp
    Filesize

    292KB

  • memory/952-74-0x0000000000400000-0x0000000000449000-memory.dmp
    Filesize

    292KB

  • memory/952-68-0x00000000004472A0-mapping.dmp
  • memory/1124-120-0x0000000000400000-0x000000000041F000-memory.dmp
    Filesize

    124KB

  • memory/1124-114-0x0000000000400000-0x000000000041F000-memory.dmp
    Filesize

    124KB

  • memory/1124-115-0x000000000041C410-mapping.dmp
  • memory/1124-119-0x0000000000400000-0x000000000041F000-memory.dmp
    Filesize

    124KB

  • memory/1124-121-0x0000000000400000-0x000000000041F000-memory.dmp
    Filesize

    124KB

  • memory/1368-77-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1368-84-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1368-87-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1368-80-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1368-72-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1368-70-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1368-90-0x00000000747D0000-0x00000000747F6000-memory.dmp
    Filesize

    152KB

  • memory/1368-75-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1368-73-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1368-79-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1368-81-0x000000000040102B-mapping.dmp