c53a5862ac68eafa66dd4ff5bc0d18636b88838017e8bdab64f4c7668a19a7ab

Analysis

max time kernel
45s
max time network
61s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
14-08-2024 18:37

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General

Target

2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe
Size

4.9MB
MD5

cbe88b139c373792a8f9cfea1116e00f
SHA1

5c1058ba01b2a886aa8c342f865027967340ea27
SHA256

c53a5862ac68eafa66dd4ff5bc0d18636b88838017e8bdab64f4c7668a19a7ab
SHA512

59250d6c2dc8064131492a094e72d6c065bdae296ad02299608a66e7445860d1f22fc952a909c07667e63d18d798b0e16712efc2086413e395955b6c8d9fe296
SSDEEP

49152:bFUKRj79S2QAoZg6ig1q2bDi1ZTKU1VCqh1S9/Y7BVSMJG9IXy5qPxwr9/4Zt5EE:B/DuUyq7Y4QQyqqwZ0E

Score

7^/10

spyware stealer

Malware Config

Signatures

Reads user/profile data of web browsers 2 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
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 3012 wrote to memory of 2556	3012	2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe	29
PID 3012 wrote to memory of 2556	3012	2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe	29
PID 3012 wrote to memory of 2556	3012	2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe	29
PID 2556 wrote to memory of 840	2556	2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe	30
PID 2556 wrote to memory of 840	2556	2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe	30
PID 2556 wrote to memory of 840	2556	2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Users\Admin\AppData\Local\Temp\2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe
  "C:\Users\Admin\AppData\Local\Temp\2024-08-14_cbe88b139c373792a8f9cfea1116e00f_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=361815000
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2556
- - C:\Users\Admin\AppData\Local\Temp\2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe
    C:\Users\Admin\AppData\Local\Temp\2024-08-14_cbe88b139c373792a8f9cfea1116e00f_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=machine_id=2dd7b5e4628752fb0b47757ed5724904 --annotation=main_process_pid=2556 --annotation=plat=Win64 --annotation=prod=Yandex --annotation=session_logout=False --annotation=ver=24.7.1.1029 --initial-client-data=0x158,0x15c,0x160,0x12c,0x164,0x13f70d728,0x13f70d734,0x13f70d740
    3⤵
    PID:840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

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
40acecffd30229d50b0da9afa4a07656

SHA1
a47980f05a5dc37a06d45e3777c807cb31f36490

SHA256
952c6f9ce1306c1261a106ba229671478794eac866ef88fe65d96a787d2e2c74

SHA512
3c8745392093978eda25e5870078017d15818720cc851243f4ec90d3803fb4c28bb1135cfdf40f0212122e71c0460a50e92a52e6b1d124324758bbee74c742ad

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