Overview

overview

10

Static

static

boos直聘....exe

windows7-x64

8

boos直聘....exe

windows10-2004-x64

10

Sharing

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General

  • Target

    a9330a485931d9407c0e7cfec1b6bb72698a03737e312ca42cb867dfede97fa4

  • Size

    254KB

  • Sample

    220826-djah7afdd2

  • MD5

    3433218252b88a917c7628d0068029dc

  • SHA1

    3f4376a7ab8ad7c719d6202fc23d9ca56f229af7

  • SHA256

    a9330a485931d9407c0e7cfec1b6bb72698a03737e312ca42cb867dfede97fa4

  • SHA512

    70cfe1ccc7a5afbceaaf9a2854d4098c2d84cf6fa67499acca28682fd3b428fce0a52dfb25d9e2becb44007f09eeb247d38ac903ec62d53206f68f18bfe033c6

  • SSDEEP

    6144:BeEUrBfP96216KrPqVbvkZ4DnvGHCU/mC7h76amNndXA:BOFX1lTiIOGJ/mqx67Hw

Score
10/10
cobaltstrike1359593325backdoortrojan

Malware Config

Extracted

Family

cobaltstrike

Botnet

1359593325

C2

http://124.71.184.251:6751/owa/

Attributes
  • host

    124.71.184.251,/owa/

  • http_header1

    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

  • http_header2

    AAAAEAAAABZIb3N0OiBvdXRsb29rLmxpdmUuY29tAAAACgAAAAtBY2NlcHQ6ICovKgAAAAcAAAABAAAADQAAAAUAAAACd2EAAAAHAAAAAAAAAA0AAAACAAAABndsYTQyPQAAAAIAAAALeGlkPTczMGJmNzsAAAACAAAAEk1TUEF1dGg9M0VrQWpES2pJOwAAAAIAAAAXQ2xpZW50SWQ9MUMwRjZDNUQ5MTBGOTsAAAACAAAAOE1pY3Jvc29mdEFwcGxpY2F0aW9uc1RlbGVtZXRyeURldmljZUlkPTk1YzE4ZDgtNGRjZTk4NTQ7AAAABgAAAAZDb29raWUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=

  • http_method1

    GET

  • http_method2

    GET

  • jitter

    5120

  • polling_time

    5000

  • port_number

    6751

  • sc_process32

    %windir%\syswow64\gpupdate.exe

  • sc_process64

    %windir%\sysnative\gpupdate.exe

  • state_machine

    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCgwZtr5WmRWGqXa6bxdqQDUmj+XU+vA4zK2b7Nfzq4qy143458ufxXidOMjoSLVP3BqyJgWamd0KYY7Yt3bDmFbWashi7f+OYdWpDNixd5AvcGOOzQhShEZ/0Uz8CG/gc99swyssnxs0YBg9Hka4Wh0ufxO89KSApuLegLE5i1/QIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown1

    1.448416512e+09

  • unknown2

    AAAABAAAAA0AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown3

    1.610612736e+09

  • uri

    /OWA/

  • user_agent

    Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko)

  • watermark

    1359593325

Targets

    • Target

      boos直聘-李笙-业务代表岗位-清华大学-工商管理专业.exe

    • Size

      511KB

    • MD5

      7b3c8a33a8607c3b1cabd24ba83a9876

    • SHA1

      70a9605990488445f8ae5836b5c92819f93d6355

    • SHA256

      2d1d71f05b0ab72e85c649e04f4c78f3007741649b9910be4266fde74504456d

    • SHA512

      3c71c27fa650c64a1b10220c5bdc42031a3426745f9a4bfbd128fd4dd7e31098c1049884e977a9b2f52f772229fc94ba44781525cade627ce562a6b663cc6c6c

    • SSDEEP

      6144:IeiRWoGu79mhdLRYxJbFP23zKx8t52aXbJdXv+4wNaS:F/oOhdLEwjKx8t52aLJd/3wNaS

    Score
    10/10
    cobaltstrike1359593325backdoortrojan

    • Cobaltstrike

      Detected malicious payload which is part of Cobaltstrike.

      trojanbackdoorcobaltstrike

    • Executes dropped EXE

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Suspicious use of NtCreateThreadExHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks