Overview

overview

10

Static

static

kr.exe

windows7_x64

10

kr.exe

windows10_x64

10

Resubmissions

03-01-2022 15:51

220103-tagh5sbdh2 10

Analysis

  • max time kernel
    152s
  • max time network
    145s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    03-01-2022 15:51

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General

  • Target

    kr.exe

  • Size

    786KB

  • MD5

    899dc9cc6e7516536bf5e816e8cecf55

  • SHA1

    6c07fc00ed2202798194749aa8037bb0ad38bb00

  • SHA256

    5f84ad4413ad6dcdea0cb3aa206cc4df29e1bad9d9598912c323c931d568ac90

  • SHA512

    445016f0e37ee3ecec319b73713d083711608c044f855e16268f89c88d460e95d85b79d375534ac6b7a4a0e869c49470d49b7e325ff0507c550107d593ae688c

Score
10/10
osirisbankerbotnet

Malware Config

Signatures

  • Osiris
    bankerbotnetosiris
  • Executes dropped EXE 1 IoCs
  • Drops startup file 1 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Uses Tor communications 1 TTPs

    Malware can proxy its traffic through Tor for more anonymity.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\kr.exe
    "C:\Users\Admin\AppData\Local\Temp\kr.exe"
    1⤵
    • Drops startup file
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3116
    • C:\Users\Admin\AppData\Local\Temp\GetX64BTIT.exe
      "C:\Users\Admin\AppData\Local\Temp\GetX64BTIT.exe"
      2⤵
      • Executes dropped EXE
      PID:1476

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Connection Proxy

1
T1090

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\GetX64BTIT.exe
    MD5

    b4cd27f2b37665f51eb9fe685ec1d373

    SHA1

    7f08febf0fdb7fc9f8bf35a10fb11e7de431abe0

    SHA256

    91f1023142b7babf6ff75dad984c2a35bde61dc9e61f45483f4b65008576d581

    SHA512

    e025f65224d78f5fd0abebe281ac0d44a385b2641e367cf39eed6aefada20a112ac47f94d7febc4424f1db6a6947bac16ff83ef93a8d745b3cddfdbe64c49a1e

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\GetX64BTIT.exe
    MD5

    b4cd27f2b37665f51eb9fe685ec1d373

    SHA1

    7f08febf0fdb7fc9f8bf35a10fb11e7de431abe0

    SHA256

    91f1023142b7babf6ff75dad984c2a35bde61dc9e61f45483f4b65008576d581

    SHA512

    e025f65224d78f5fd0abebe281ac0d44a385b2641e367cf39eed6aefada20a112ac47f94d7febc4424f1db6a6947bac16ff83ef93a8d745b3cddfdbe64c49a1e

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\x64btit.txt
    MD5

    fa1b6f3c3c15af0d9d955a6499c16066

    SHA1

    0814709ac8ed192ca1de6c4047791310c732002d

    SHA256

    99f7dbecfd817b9213ff87337630c22ea3b8f0bd8b5cd573d565f60e88423e14

    SHA512

    14a6a8726133747c6b42b5c89117da963c8827c836b17214413679de34cff050e3cbc1c314114ce9182756aadf684b37b32754d334c2ec2cc7fd5edb8eaf5c25

    Download Submit
  • memory/1476-118-0x0000000000000000-mapping.dmp
    Download
  • memory/3116-115-0x00000000008B0000-0x000000000097A000-memory.dmp
    Filesize

    808KB

    Download
  • memory/3116-116-0x00000000034A0000-0x00000000034E1000-memory.dmp
    Filesize

    260KB

    Download
  • memory/3116-117-0x0000000000400000-0x00000000004A9000-memory.dmp
    Filesize

    676KB

    Download