44caliber | 738a089b363e1b9f43149def5ae5b136bc9009286e4304e09230e60d0d41e6d0

Analysis

max time kernel
119s
max time network
142s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
27-12-2023 13:47

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General

Target

Insidious.exe
Size

274KB
MD5

2080c22a4df9e8c9e476556e63206599
SHA1

5c5393339234228798164654314f0d8de5ce04ca
SHA256

738a089b363e1b9f43149def5ae5b136bc9009286e4304e09230e60d0d41e6d0
SHA512

d07064ad61a4fe469e8fd21ae3a65d5c64e47e4bb73336aab9eaad984a10888e9b4e88d7fa4f442c46a01ccf7910ca5f6df6e278e05680fe6521ad7adebd25b7
SSDEEP

6144:Xf+BLtABPD34JMDSOxIWM8VzZdafTyMlI1D0doN:z4GiWM8Vzdh1DpN

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1189420678399676496/Cv6q-pjb2lOltckEXX8PZeIwdjaBhHevzpPlWHccy6VfWacxjuWV_ETooqcyrrEG3G0e

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
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
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

2 freegeoip.app
3 freegeoip.app

flow	ioc
2	freegeoip.app
3	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:

Insidious.exe

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Insidious.exe

pid process

2760 Insidious.exe
2760 Insidious.exe
2760 Insidious.exe
2760 Insidious.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Insidious.exe

description pid process

Token: SeDebugPrivilege 2760 Insidious.exe

pid	process
2760	Insidious.exe
2760	Insidious.exe
2760	Insidious.exe
2760	Insidious.exe

description	pid	process
Token: SeDebugPrivilege	2760	Insidious.exe

C:\Users\Admin\AppData\Local\Temp\Insidious.exe
"C:\Users\Admin\AppData\Local\Temp\Insidious.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2760

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

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Downloads

C:\Users\Admin\AppData\Local\44\Process.txt

Filesize
374B

MD5
8a95ae51a04255cd12e8240d9ae8245c

SHA1
4005648e4f451529d3022f7475109c77391e35ae

SHA256
22b9f23f2ef3713630232540724a2134c0a310c4429e1a7cdfabaeefbe9602fb

SHA512
2f51aeb9975f8e9c0c28df1808ea1ad790468069aeceb077182d8da66fa065932ed6f6d4d44092307816b879d1ef683a6eab9bd6157d3739160347f6fdbf4e66

Download Submit
memory/2760-0-0x0000000000AC0000-0x0000000000B0A000-memory.dmp

Filesize
296KB

Download
memory/2760-1-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

Filesize
9.9MB

Download
memory/2760-2-0x000000001B1B0000-0x000000001B230000-memory.dmp

Filesize
512KB

Download
memory/2760-49-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

Filesize
9.9MB

Download