44caliber | b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da

Analysis

max time kernel
115s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20220310-en
submitted
14-03-2022 18:23

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General

Target

b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe
Size

3.1MB
MD5

6578d9be5fb4897f662fb0d03483e180
SHA1

777d1e20cf2a663645dc2ddaba6c55b3bd6d1061
SHA256

b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da
SHA512

853d2d4bfb5314449ad2261fd03babd65660ef005d83736ed3e98ea9f7e7b24a47050bd93c26839a67bf50916890893ef113c4087ebb63e9605f82970e18e681

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/847554055823032344/s6_moo6eA2oloMQ3eCj7PZLl-oLloTBhcmvx-NIpGmanUeVMkMDi8R_Yywnb-HptWupH

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
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
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

10 freegeoip.app
11 freegeoip.app

flow	ioc
10	freegeoip.app
11	freegeoip.app

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

Processes:

b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe

pid	process
3428	b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe
3428	b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe
3428	b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe
3428	b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe

description pid process

Token: SeDebugPrivilege 3428 b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe

description	pid	process
Token: SeDebugPrivilege	3428	b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe

C:\Users\Admin\AppData\Local\Temp\b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe
"C:\Users\Admin\AppData\Local\Temp\b54c282da9fa8cc50db1db517ecf34f47f56a5053d4c161eb44bcff8463358da.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3428

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/3428-134-0x00000000007E0000-0x000000000082A000-memory.dmp

Filesize
296KB

Download
memory/3428-135-0x00007FFFED4E0000-0x00007FFFEDFA1000-memory.dmp

Filesize
10.8MB

Download
memory/3428-136-0x0000000002AF0000-0x0000000002AF2000-memory.dmp

Filesize
8KB

Download