44caliber | 55b6defb5567076e025333cf20026653b1aaec699a5403b0f8f8cd167df3d5f9

Analysis

max time kernel
30s
max time network
16s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
26-06-2024 10:35

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General

Target

Loader.exe
Size

274KB
MD5

aa53f781ad5a200f415893c0da7396aa
SHA1

bba01d4263629a7830081ea7f2b5fd1bf7e324e5
SHA256

55b6defb5567076e025333cf20026653b1aaec699a5403b0f8f8cd167df3d5f9
SHA512

935a56faf5549d9467caba32ba797d3000f4edb5eade40f298de61a223dd2b542e7f3cad5c9916223c90632ac8628f9cc3046b02b3b9944b703067b7e05cee56
SSDEEP

6144:cf+BLtABPDMZZzIlzcwKUfmuO/9iXrEtdyIOe0dfx:7ZOnKUfmuO2oOeox

Score

10^/10

44caliber blackguard persistence spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1255468679362252871/AGwJ4HWq8HAstPJqHecN5XV6T9315TewkpWEdTuW8h93j721tZYBI8dhwOpsQP2k0PuH

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
BlackGuard
Infostealer first seen in Late 2021.
stealer blackguard
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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Loader.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Loader.exe\""	Loader.exe

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
3	api.ipify.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	Loader.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Loader.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5116	Loader.exe
5116	Loader.exe
5116	Loader.exe
5116	Loader.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5116	Loader.exe

C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- Adds Run key to start application
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5116

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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\Roaming\44\Process.txt

Filesize
1KB

MD5
331124daaff0fc782e930cfbc660851e

SHA1
4b5dc7463016cc5425dbe018484eec4c8864f3d5

SHA256
46908f916bbf481f14cb5df2a1c597c4b168376a7a009ed1bd581eaa2649b819

SHA512
e8202e456ee12e2067aca937043a8f2b70af20be06140bd873f26156e87898cf683847752b3034cbd25a4c8ad5fe1e518595ee24c6fce5eccad0fd5f77974a81

Download Submit
memory/5116-0-0x000001F97DF60000-0x000001F97DFAA000-memory.dmp

Filesize
296KB

Download
memory/5116-1-0x00007FFFDF863000-0x00007FFFDF865000-memory.dmp

Filesize
8KB

Download
memory/5116-2-0x00007FFFDF860000-0x00007FFFE0321000-memory.dmp

Filesize
10.8MB

Download
memory/5116-118-0x00007FFFDF860000-0x00007FFFE0321000-memory.dmp

Filesize
10.8MB

Download