Overview

overview

10

Static

static

1

Shipment D...ed.exe

windows7_x64

10

Shipment D...ed.exe

windows10_x64

10

Analysis

  • max time kernel
    96s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    20-04-2021 14:17

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General

  • Target

    Shipment Document BL,INV And Packing List Attached.exe

Score
10/10
oskidiscoveryinfostealerspywarestealer

Malware Config

Extracted

Family

oski

C2

31.210.20.228

Signatures

  • Oski

    Oski is an infostealer targeting browser data, crypto wallets.

    infostealeroski
  • Downloads MZ/PE file
  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
    spyware
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Suspicious use of SetThreadContext 1 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 1 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Shipment Document BL,INV And Packing List Attached.exe
    "C:\Users\Admin\AppData\Local\Temp\Shipment Document BL,INV And Packing List Attached.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:736
    • C:\Users\Admin\AppData\Local\Temp\Shipment Document BL,INV And Packing List Attached.exe
      "C:\Users\Admin\AppData\Local\Temp\Shipment Document BL,INV And Packing List Attached.exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious use of WriteProcessMemory
      PID:2820
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c taskkill /pid 2820 & erase C:\Users\Admin\AppData\Local\Temp\Shipment Document BL,INV And Packing List Atta' & RD /S /Q C:\\ProgramData\\165380812335101\\* & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2176
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /pid 2820
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1120

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

2
T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • \ProgramData\mozglue.dll
    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

    Download Submit
  • \ProgramData\nss3.dll
    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

    Download Submit
  • \ProgramData\sqlite3.dll
    MD5

    e477a96c8f2b18d6b5c27bde49c990bf

    SHA1

    e980c9bf41330d1e5bd04556db4646a0210f7409

    SHA256

    16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

    SHA512

    335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

    Download Submit
  • \Users\Admin\AppData\Local\Temp\nsuB82C.tmp\ye59m9ri8.dll
    MD5

    d50900281f111920d7f29261a6147120

    SHA1

    de2d026a2cbc09be2b1a76136c56cf0591f5455c

    SHA256

    bdf8682656f026c7622a0cf0e90e711bffcd6fd6c6343f0d1c81d10b896b386d

    SHA512

    918feb60368412f92f00588c0224b49dea6b96ad4debcac6b9d7b814da290ebe36e1d31cd5faf43fe494b7f6d428dc0f46c7c3e59e6c6106d5398ce6779a5f44

    Download Submit
  • memory/736-116-0x0000000003171000-0x0000000003173000-memory.dmp
    Filesize

    8KB

    Download
  • memory/736-115-0x0000000003170000-0x0000000003171000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1120-123-0x0000000000000000-mapping.dmp
    Download
  • memory/2176-122-0x0000000000000000-mapping.dmp
    Download
  • memory/2820-117-0x000000000040717B-mapping.dmp
    Download
  • memory/2820-118-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

    Download