File name:	2025-03-24_26bae50b16c1e1bbd16a5c80056de322_cobalt-strike_ryuk
Full analysis:	https://app.any.run/tasks/460d81fd-f649-4fb9-9013-7de879ee2aed
Verdict:	Malicious activity
Threats:	Stealc is a stealer malware that targets victims’ sensitive data, which it exfiltrates from browsers, messaging apps, and other software. The malware is equipped with advanced features, including fingerprinting, control panel, evasion mechanisms, string obfuscation, etc. Stealc establishes persistence and communicates with its C2 server through HTTP POST requests. Stealc ist eine Stealer-Malware, die es auf die sensiblen Daten der Opfer abgesehen hat, die sie aus Browsern, Messaging-Apps und anderer Software exfiltriert. Die Malware ist mit fortschrittlichen Funktionen ausgestattet, darunter Fingerprinting, Bedienfeld, Umgehungsmechanismen, String-Verschleierung usw. Stealc stellt eine Persistenz her und kommuniziert mit seinem C2-Server über HTTP-POST-Anfragen. Stealers are a group of malicious software that are intended for gaining unauthorized access to users’ information and transferring it to the attacker. The stealer malware category includes various types of programs that focus on their particular kind of data, including files, passwords, and cryptocurrency. Stealers are capable of spying on their targets by recording their keystrokes and taking screenshots. This type of malware is primarily distributed as part of phishing campaigns. Vidar is a dangerous malware that steals information and cryptocurrency from infected users. It derives its name from the ancient Scandinavian god of Vengeance. This stealer has been terrorizing the internet since 2018. Malware Trends Tracker >>>
Analysis date:	March 24, 2025, 14:20:59
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	telegram vidar stealer stealc
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32+ executable (console) x86-64, for MS Windows, 9 sections
MD5:	26BAE50B16C1E1BBD16A5C80056DE322
SHA1:	99B4DA36B51A719F24689515A00C4A70AADD5004
SHA256:	07B9B031A1353F705A15A11598DBD6017065352AE86EE4C6491DB9E247DAF4C5
SSDEEP:	6144:mbkQPNlYZcchuRx2PoDgopiLwBymHsHsu5JzAE2Asko+zxCaGETDW6cm:mbkDZhC4wkOXDMdJ8EfzZG273

.exe	\|	Generic Win/DOS Executable (50)
.exe	\|	DOS Executable Generic (49.9)

MachineType:	AMD AMD64
TimeStamp:	2025:03:16 14:57:11+00:00
ImageFileCharacteristics:	Executable, Large address aware
PEType:	PE32+
LinkerVersion:	14
CodeSize:	169472
InitializedDataSize:	56320
UninitializedDataSize:	-
EntryPoint:	0x17dec
OSVersion:	6
ImageVersion:	-
SubsystemVersion:	6
Subsystem:	Windows command line


(PID) Process:	(5204) MSBuild.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content
Operation:	write	Name:	CachePrefix
Value:
(PID) Process:	(5204) MSBuild.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies
Operation:	write	Name:	CachePrefix
Value: Cookie:
(PID) Process:	(5204) MSBuild.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History
Operation:	write	Name:	CachePrefix
Value: Visited:
(PID) Process:	(1628) chrome.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Google\Chrome\BLBeacon
Operation:	write	Name:	failed_count
Value: 0
(PID) Process:	(1628) chrome.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Google\Chrome\BLBeacon
Operation:	write	Name:	state
Value: 2
(PID) Process:	(1628) chrome.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Google\Chrome\BLBeacon
Operation:	write	Name:	state
Value: 1
(PID) Process:	(1628) chrome.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Google\Chrome\StabilityMetrics
Operation:	write	Name:	user_experience_metrics.stability.exited_cleanly
Value: 0
(PID) Process:	(1628) chrome.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Google\Update\ClientStateMedium\{8A69D345-D564-463C-AFF1-A69D9E530F96}
Operation:	write	Name:	usagestats
Value: 0
(PID) Process:	(7732) msedge.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Edge\BLBeacon
Operation:	write	Name:	failed_count
Value: 0
(PID) Process:	(7732) msedge.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Edge\BLBeacon
Operation:	write	Name:	state
Value: 2

PID	Process	Filename		Type
1628	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\PersistentOriginTrials\LOG.old~RF111a3c.TMP		—
		MD5:—	SHA256:—
1628	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\PersistentOriginTrials\LOG.old		—
		MD5:—	SHA256:—
1628	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\discounts_db\LOG.old~RF111a3c.TMP		—
		MD5:—	SHA256:—
1628	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\discounts_db\LOG.old		—
		MD5:—	SHA256:—
1628	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\commerce_subscription_db\LOG.old~RF111a4b.TMP		—
		MD5:—	SHA256:—
1628	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\commerce_subscription_db\LOG.old		—
		MD5:—	SHA256:—
1628	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\chrome_cart_db\LOG.old~RF111a3c.TMP		—
		MD5:—	SHA256:—
1628	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\chrome_cart_db\LOG.old		—
		MD5:—	SHA256:—
1628	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\coupon_db\LOG.old~RF111a4b.TMP		—
		MD5:—	SHA256:—
1628	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\coupon_db\LOG.old		—
		MD5:—	SHA256:—

PID	Process	Method	HTTP Code	IP	URL	CN	Type	Size	Reputation
—	—	GET	200	167.235.59.196:443	https://x.p.formaxprime.co.uk/	unknown	—	—	—
—	—	GET	200	149.154.167.99:443	https://t.me/g_etcontent	unknown	html	12.1 Kb	whitelisted
—	—	POST	200	167.235.59.196:443	https://x.p.formaxprime.co.uk/	unknown	text	58 b	malicious
—	—	POST	200	167.235.59.196:443	https://x.p.formaxprime.co.uk/	unknown	text	2.13 Kb	malicious
—	—	POST	400	20.190.160.5:443	https://login.live.com/ppsecure/deviceaddcredential.srf	unknown	text	203 b	whitelisted
—	—	POST	200	40.126.32.133:443	https://login.live.com/RST2.srf	unknown	xml	10.3 Kb	whitelisted
—	—	POST	400	20.190.160.64:443	https://login.live.com/ppsecure/deviceaddcredential.srf	unknown	text	203 b	whitelisted
5204	MSBuild.exe	POST	200	167.235.59.196:443	https://x.p.formaxprime.co.uk/	unknown	text	2 b	malicious
—	—	POST	200	167.235.59.196:443	https://x.p.formaxprime.co.uk/	unknown	text	108 b	malicious
—	—	POST	200	167.235.59.196:443	https://x.p.formaxprime.co.uk/	unknown	text	5.69 Kb	malicious

PID	Process	IP	Domain	ASN	CN	Reputation
—	—	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4	System	192.168.100.255:137	—	—	—	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
5204	MSBuild.exe	149.154.167.99:443	t.me	Telegram Messenger Inc	GB	whitelisted
—	—	40.113.103.199:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
—	—	20.190.159.71:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
—	—	167.235.59.196:443	x.p.formaxprime.co.uk	Hetzner Online GmbH	DE	unknown
2104	svchost.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
5204	MSBuild.exe	167.235.59.196:443	x.p.formaxprime.co.uk	Hetzner Online GmbH	DE	unknown
6544	svchost.exe	20.190.159.71:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted

Domain	IP	Reputation
settings-win.data.microsoft.com	40.127.240.158 51.104.136.2	whitelisted
google.com	142.250.186.142	whitelisted
t.me	149.154.167.99	whitelisted
client.wns.windows.com	40.113.103.199 20.198.162.76	whitelisted
login.live.com	20.190.159.71 20.190.159.129 20.190.159.4 20.190.159.75 20.190.159.131 40.126.31.130 40.126.31.69 40.126.31.129	whitelisted
x.p.formaxprime.co.uk	167.235.59.196	malicious
arc.msn.com	20.74.47.205	whitelisted
clientservices.googleapis.com	172.217.18.3	whitelisted
accounts.google.com	74.125.206.84	whitelisted
www.google.com	142.250.185.196	whitelisted

PID	Process	Class	Message
5204	MSBuild.exe	Misc activity	ET INFO Observed Telegram Domain (t .me in TLS SNI)
—	—	A Network Trojan was detected	ET MALWARE Win32/Stealc/Vidar Stealer Style Headers In HTTP POST M1
—	—	Malware Command and Control Activity Detected	ET MALWARE Win32/Stealc/Vidar Stealer Style Headers In HTTP POST M2
—	—	Malware Command and Control Activity Detected	ET MALWARE Win32/Stealc/Vidar Stealer Active C2 Responding with plugins Config M1
—	—	Malware Command and Control Activity Detected	ET MALWARE Win32/Stealc/Vidar Stealer Style Headers In HTTP POST M2
—	—	A Network Trojan was detected	STEALER [ANY.RUN] Base64 Encoded SQLite Dump
—	—	Malware Command and Control Activity Detected	ET MALWARE Win32/Stealc/Vidar Stealer Style Headers In HTTP POST M2
—	—	A Network Trojan was detected	STEALER [ANY.RUN] Base64 Encoded SQLite Dump
—	—	Malware Command and Control Activity Detected	ET MALWARE Win32/Stealc/Vidar Stealer Style Headers In HTTP POST M2
—	—	A Network Trojan was detected	STEALER [ANY.RUN] Base64 Encoded SQLite Dump

General Info

2025-03-24_26bae50b16c1e1bbd16a5c80056de322_cobalt-strike_ryuk

26BAE50B16C1E1BBD16A5C80056DE322

99B4DA36B51A719F24689515A00C4A70AADD5004

07B9B031A1353F705A15A11598DBD6017065352AE86EE4C6491DB9E247DAF4C5

6144:mbkQPNlYZcchuRx2PoDgopiLwBymHsHsu5JzAE2Asko+zxCaGETDW6cm:mbkDZhC4wkOXDMdJ8EfzZG273

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

VIDAR mutex has been found

VIDAR has been detected (YARA)

Actions looks like stealing of personal data

Steals credentials from Web Browsers

SUSPICIOUS

Process communicates with Telegram (possibly using it as an attacker's C2 server)

Reads security settings of Internet Explorer

Searches for installed software

There is functionality for taking screenshot (YARA)

Multiple wallet extension IDs have been found

INFO

Checks supported languages

Checks proxy server information

Reads the computer name

Reads the software policy settings

Reads the machine GUID from the registry

Reads CPU info

Reads Environment values

Reads product name

Creates files in the program directory

Application launched itself

Creates files or folders in the user directory

Malware configuration

Vidar

Static information

TRiD

EXIF

EXE

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings