Analysis

  • max time kernel
    56s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29-09-2022 10:32

General

  • Target

    65b3950a62245fbbf12576b000623feccf941ec225bceba333ebca578f5fe6d0.exe

  • Size

    7MB

  • MD5

    0d7a584f85880b0c8541833714af9745

  • SHA1

    def0269ccfa9518b4827e4d1bbf37c2a452f23ce

  • SHA256

    65b3950a62245fbbf12576b000623feccf941ec225bceba333ebca578f5fe6d0

  • SHA512

    649b17a838be68a244bc8ccca43fbbc259ce84472016c51c4a63f022acea0cb2cdcb05ef1db1dbe61b9c6e7091e04fe1315923cc36b92ea23d6d533c6f2a5d13

  • SSDEEP

    196608:yshVZPqIbleCIWtzM1lKmTC+3NRHgz1fL2wbp/Th:yspZpIvlKMxgxzfF

Score
10/10

Malware Config

Extracted

Family

oski

C2

shivabhaiji.in

Signatures

  • Oski

    Oski is an infostealer targeting browser data, crypto wallets.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\65b3950a62245fbbf12576b000623feccf941ec225bceba333ebca578f5fe6d0.exe
    "C:\Users\Admin\AppData\Local\Temp\65b3950a62245fbbf12576b000623feccf941ec225bceba333ebca578f5fe6d0.exe"
    1⤵
    • Loads dropped DLL
    • Modifies Internet Explorer settings
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:544
    • C:\Users\Admin\AppData\Local\Temp\VIP72\crack.exe
      "C:\Users\Admin\AppData\Local\Temp\VIP72\crack.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:820

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\VIP72\crack.exe
    Filesize

    200KB

    MD5

    f5c3c74c09dc9797228bb5ac5020b6b9

    SHA1

    269d6eacfcd62024c3937f785e0f6ec62a91b46e

    SHA256

    9d1ef296437c72f86d3ca4faec512b5686cbee7bfe0493b3c4a378d61a7ae686

    SHA512

    3a804ff2b983266de1f8412f8a448fd655bf3c1914a2cbb46e3afcb8f7b0ab4657b397c5a074bcc9abc80e9759664b5b0abb0e8df9527906ca3bb8020ad5e868

  • \Users\Admin\AppData\Local\Temp\VIP72\crack.exe
    Filesize

    200KB

    MD5

    f5c3c74c09dc9797228bb5ac5020b6b9

    SHA1

    269d6eacfcd62024c3937f785e0f6ec62a91b46e

    SHA256

    9d1ef296437c72f86d3ca4faec512b5686cbee7bfe0493b3c4a378d61a7ae686

    SHA512

    3a804ff2b983266de1f8412f8a448fd655bf3c1914a2cbb46e3afcb8f7b0ab4657b397c5a074bcc9abc80e9759664b5b0abb0e8df9527906ca3bb8020ad5e868

  • \Users\Admin\AppData\Local\Temp\VIP72\crack.exe
    Filesize

    200KB

    MD5

    f5c3c74c09dc9797228bb5ac5020b6b9

    SHA1

    269d6eacfcd62024c3937f785e0f6ec62a91b46e

    SHA256

    9d1ef296437c72f86d3ca4faec512b5686cbee7bfe0493b3c4a378d61a7ae686

    SHA512

    3a804ff2b983266de1f8412f8a448fd655bf3c1914a2cbb46e3afcb8f7b0ab4657b397c5a074bcc9abc80e9759664b5b0abb0e8df9527906ca3bb8020ad5e868

  • \Users\Admin\AppData\Local\Temp\VIP72\crack.exe
    Filesize

    200KB

    MD5

    f5c3c74c09dc9797228bb5ac5020b6b9

    SHA1

    269d6eacfcd62024c3937f785e0f6ec62a91b46e

    SHA256

    9d1ef296437c72f86d3ca4faec512b5686cbee7bfe0493b3c4a378d61a7ae686

    SHA512

    3a804ff2b983266de1f8412f8a448fd655bf3c1914a2cbb46e3afcb8f7b0ab4657b397c5a074bcc9abc80e9759664b5b0abb0e8df9527906ca3bb8020ad5e868

  • \Users\Admin\AppData\Local\Temp\VIP72\crack.exe
    Filesize

    200KB

    MD5

    f5c3c74c09dc9797228bb5ac5020b6b9

    SHA1

    269d6eacfcd62024c3937f785e0f6ec62a91b46e

    SHA256

    9d1ef296437c72f86d3ca4faec512b5686cbee7bfe0493b3c4a378d61a7ae686

    SHA512

    3a804ff2b983266de1f8412f8a448fd655bf3c1914a2cbb46e3afcb8f7b0ab4657b397c5a074bcc9abc80e9759664b5b0abb0e8df9527906ca3bb8020ad5e868

  • memory/544-54-0x0000000075A91000-0x0000000075A93000-memory.dmp
    Filesize

    8KB

  • memory/820-68-0x0000000000000000-mapping.dmp