c53a5862ac68eafa66dd4ff5bc0d18636b88838017e8bdab64f4c7668a19a7ab

Analysis

max time kernel
141s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe

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 4 IoCs

description	pid	Process	procid_target
PID 3720 wrote to memory of 5036	3720	2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe	84
PID 3720 wrote to memory of 5036	3720	2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe	84
PID 5036 wrote to memory of 752	5036	2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe	86
PID 5036 wrote to memory of 752	5036	2024-08-14_cbe88b139c373792a8f9cfea1116e00f_cobalt-strike_ryuk.exe	86

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⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3720
- 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=489316322
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5036
- - 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=488dca4c15f9a1d330ad312b391a804e --annotation=main_process_pid=5036 --annotation=plat=Win64 --annotation=prod=Yandex --annotation=session_logout=False --annotation=ver=24.7.1.1029 --initial-client-data=0x288,0x28c,0x290,0x264,0x294,0x7ff6b3e9d728,0x7ff6b3e9d734,0x7ff6b3e9d740
    3⤵
    PID:752

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

Query Registry

T1012

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
1KB

MD5
f0c13208f79624f3ee00fc70f26dcefa

SHA1
793accc02e6083860d890bbe50cfc1bcef9361f9

SHA256
f0c1e0ac71ca11f1b6cccec3a64382621d03d2fc4c9a376e324f69f552cd61c4

SHA512
fb7334d0bfe6725b5270ae1acc7d8c171b0d4f30d5a5de65382de41161b408710eeaafd0a326f73a8bd702a3bc8857c241a402b077e12c75338a56e4d14a2c4f

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