f3d44069bf0ae8113082dee57c4028dd3a0d5b352936a2c5e242cdafbe582378

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19/11/2024, 19:40

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General

Target

2024-11-19_c398beb81ac2e36aacd7842c7e38a87e_cobalt-strike_ryuk.exe
Size

4.9MB
MD5

c398beb81ac2e36aacd7842c7e38a87e
SHA1

dff19de837280957c6dfd6741ca932877ed83436
SHA256

f3d44069bf0ae8113082dee57c4028dd3a0d5b352936a2c5e242cdafbe582378
SHA512

1f4698ba386c8274e51ad2f6e2af151ba440db0172e091286eeadb06f46a21cfabd8450cec18ec0a33a768dff5139ad0cdb5187906317b73ed67523381fd2187
SSDEEP

49152:qH22XshK+YmrPwVwyBdlhMC7ahrAZmJX+N9hQXpKskuxy52tm6/5sQnVPcvKwoKm:+sFcTl2C7zZK6Lts5KKjJ1

Score

7^/10

spyware stealer

Malware Config

Signatures

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2720	2668	2024-11-19_c398beb81ac2e36aacd7842c7e38a87e_cobalt-strike_ryuk.exe	31
PID 2668 wrote to memory of 2720	2668	2024-11-19_c398beb81ac2e36aacd7842c7e38a87e_cobalt-strike_ryuk.exe	31
PID 2668 wrote to memory of 2720	2668	2024-11-19_c398beb81ac2e36aacd7842c7e38a87e_cobalt-strike_ryuk.exe	31
PID 2720 wrote to memory of 2848	2720	2024-11-19_c398beb81ac2e36aacd7842c7e38a87e_cobalt-strike_ryuk.exe	32
PID 2720 wrote to memory of 2848	2720	2024-11-19_c398beb81ac2e36aacd7842c7e38a87e_cobalt-strike_ryuk.exe	32
PID 2720 wrote to memory of 2848	2720	2024-11-19_c398beb81ac2e36aacd7842c7e38a87e_cobalt-strike_ryuk.exe	32

C:\Users\Admin\AppData\Local\Temp\2024-11-19_c398beb81ac2e36aacd7842c7e38a87e_cobalt-strike_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-19_c398beb81ac2e36aacd7842c7e38a87e_cobalt-strike_ryuk.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2668
- C:\Users\Admin\AppData\Local\Temp\2024-11-19_c398beb81ac2e36aacd7842c7e38a87e_cobalt-strike_ryuk.exe
  "C:\Users\Admin\AppData\Local\Temp\2024-11-19_c398beb81ac2e36aacd7842c7e38a87e_cobalt-strike_ryuk.exe" --verbose-logging --run-as-admin --target-path="C:\Users\Admin\AppData\Local\Yandex\YandexBrowser\Application" --child-setup-process --restart-as-admin-time=251765200
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Users\Admin\AppData\Local\Temp\2024-11-19_c398beb81ac2e36aacd7842c7e38a87e_cobalt-strike_ryuk.exe
    C:\Users\Admin\AppData\Local\Temp\2024-11-19_c398beb81ac2e36aacd7842c7e38a87e_cobalt-strike_ryuk.exe --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Yandex\YandexBrowser\User Data\Crashpad" --url=https://crash-reports.browser.yandex.net/submit --annotation=channel=beta --annotation=machine_id=45323b5b377897c846fc6c473cf984a9 --annotation=main_process_pid=2720 --annotation=plat=Win64 --annotation=prod=Yandex --annotation=session_logout=False --annotation=ver=24.10.4.462 --initial-client-data=0x158,0x15c,0x160,0x12c,0x164,0x13f9a54b8,0x13f9a54c4,0x13f9a54d0
    3⤵
    PID:2848

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\yandex_browser_installer.log

Filesize
2KB

MD5
5002cebd8f6989068d2ea147d8014281

SHA1
303460c8c6c04a8fc753b948c4af628e337e6f2c

SHA256
757f0bdcbadebc71eceb67bede6bdaa71cfbcbda848af712ea69b698e403170b

SHA512
5d32c62b0ba902dc8ac3ee88d57ba1fad85c3f1cb4f4ab5fc87d705febec557faa6a642fd684360c46fc82a395bf3cfa399da2ccf27765e656987d5398545a5f

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