44caliber | fd45e5b2e40a6a427bc0b2caf7d546a63a632adaa4fe7cb70a9173f74c4c54e2

Analysis

max time kernel
119s
max time network
122s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
31-08-2023 04:42

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General

Target

loader.exe
Size

274KB
MD5

85b10f8d022b2b82aa276168da0950fe
SHA1

f0ebbadf43bd9fbd5f93706aae076f89230a643b
SHA256

fd45e5b2e40a6a427bc0b2caf7d546a63a632adaa4fe7cb70a9173f74c4c54e2
SHA512

737fccf654e342818da06adfbfa724862d5c816551e110cf94f71313186b8dc19319dcbb26affe47a9a0f7c05ecaaa564d95d1a6a2fd7c6278bddaef9347c53b
SSDEEP

6144:tf+BLtABPDV5pPQgxWGomsXSb6W9qgMlI1D0Zrj:P58hmsXS62h1Dej

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1136773243261427722/PblfbxA7GVJqBDdmJ8FJrCPSUvE8iRRElfnrMu-WTqPYsrO633tdDs3xiZCowAI13ArQ

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

5 freegeoip.app
4 freegeoip.app

flow	ioc
5	freegeoip.app
4	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:

loader.exe

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

Processes:

loader.exe

pid process

2556 loader.exe
2556 loader.exe
2556 loader.exe
2556 loader.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

loader.exe

description pid process

Token: SeDebugPrivilege 2556 loader.exe

pid	process
2556	loader.exe
2556	loader.exe
2556	loader.exe
2556	loader.exe

description	pid	process
Token: SeDebugPrivilege	2556	loader.exe

C:\Users\Admin\AppData\Local\Temp\loader.exe
"C:\Users\Admin\AppData\Local\Temp\loader.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2556

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
344B

MD5
eabdc2c762bc8ac3e134c1bd61d5ef61

SHA1
fa1473253d90e9f39c191fddc1685e1db05791d2

SHA256
740ba910a7fffd41dd0c0a05642ae1cb81a4d9295e77c7f1172849b637d518dd

SHA512
8fbe32f5173dbd94e2b7c34d93a0f2bba221c6156498314c22db89f711ce706cf1dc5e3e4c26f7658ca6e6fb33e2f595bcf50814737a67e10f69ce82b9f6bb02

Download Submit
memory/2556-0-0x0000000000CE0000-0x0000000000D2A000-memory.dmp

Filesize
296KB

Download
memory/2556-1-0x000007FEF5490000-0x000007FEF5E7C000-memory.dmp

Filesize
9.9MB

Download
memory/2556-2-0x000000001B020000-0x000000001B0A0000-memory.dmp

Filesize
512KB

Download
memory/2556-49-0x000007FEF5490000-0x000007FEF5E7C000-memory.dmp

Filesize
9.9MB

Download