mercurialgrabber | 546b7e985765d0a21e915869dad863133255bb081e8de5407f7104cd5bdcb77b

Resubmissions

17/03/2025, 00:44

250317-a3jz7avtcz 10

06/03/2025, 15:21

250306-sre6za1xgz 10

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06/03/2025, 15:21

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Report Analysis Logs

General

Target

Sigma.exe
Size

41KB
MD5

9aff73f27f7afc4251dfe1ac8fe52d7d
SHA1

deef8ffa68978c9c8b398e5f7c4c026faf63fa5d
SHA256

546b7e985765d0a21e915869dad863133255bb081e8de5407f7104cd5bdcb77b
SHA512

ee2f3c18744b749dc68003f7e81c800c288060c9e56f74e61c706b3c61c17198b42401da49e524e4e77ae8a5f5847adf387034f12898a9fdeabddfc465b7a3a9
SSDEEP

768:yscaIiIEI/gB1wtduZ0e6WTj8KZKfgm3Eh3/:hc1yYgBEe6WToF7EJ/

Score

10^/10

mercurialgrabber spyware stealer

Malware Config

Extracted

Family

mercurialgrabber

https://discord.com/api/webhooks/1347218786394050560/25E1MnN6tM_9Plb5-he1mualyMBpKwbwpRNDgFeexEvlMFJngDEgVT6C2DE0Vpotbp-Y

Signatures

Mercurial Grabber Stealer
Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.
stealer mercurialgrabber
Mercurialgrabber family
mercurialgrabber
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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
8	discord.com
9	discord.com
10	discord.com

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip4.seeip.org
6	ip-api.com

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	Sigma.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Sigma.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1228	Sigma.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1228 wrote to memory of 2708	1228	Sigma.exe	32
PID 1228 wrote to memory of 2708	1228	Sigma.exe	32
PID 1228 wrote to memory of 2708	1228	Sigma.exe	32

C:\Users\Admin\AppData\Local\Temp\Sigma.exe
"C:\Users\Admin\AppData\Local\Temp\Sigma.exe"
1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1228 -s 1336
  2⤵
  PID:2708

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control