44caliber | 8807b5909f1b81254dfd6d62a3c4d590d1330085eaf786f6ff995617f8c5e562

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-02-2025 19:03

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General

Target

Astra Image Logger.exe
Size

275KB
MD5

a3696dd072443ecb27c0c7f12a14b61f
SHA1

7525f55b0015b8ae66452c3ef143c18325ff9bd0
SHA256

8807b5909f1b81254dfd6d62a3c4d590d1330085eaf786f6ff995617f8c5e562
SHA512

aaba4ed34e31592ecf3f6c408a89aff88891d6ca9dcd3b8073f84ac6371ef7626e0d6783cf23fcfd7b055944c1a739cc64543986bc4cb4a95ba96def5af8a6ed
SSDEEP

6144:zf+BLtABPDwnBoKVjuGHm0uu4zblYeJ7lA1D03v9:AnXjm0uu4/lYeM1De9

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1067305012188958802/Toi3qZ0OM4SmK4Z6bWOUhNfyduj98KvQjF8a_1cAjycHP2nSnt94ILWCXAZ6BeViBqUy

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
44Caliber family
44caliber
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
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.

flow	ioc
4	freegeoip.app
5	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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	Astra Image Logger.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Astra Image Logger.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3040	Astra Image Logger.exe
3040	Astra Image Logger.exe
3040	Astra Image Logger.exe
3040	Astra Image Logger.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3040	Astra Image Logger.exe

C:\Users\Admin\AppData\Local\Temp\Astra Image Logger.exe
"C:\Users\Admin\AppData\Local\Temp\Astra Image Logger.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3040

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

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
242B

MD5
572e70ec470733b9b197ce6f2d53917b

SHA1
e8b701624a6f6c3dd57cc5ae24b3a6f303e4836a

SHA256
5843b13af5c9b20f1d9b262528804615cec38756f932c688e71263dd0cfc5011

SHA512
d36cc0819ba67ea844230a5c4d4cd0fc84cbed793dd855cf95c5304967aa57993ac3460ccedfd59006f31d2ab0f87908647a7d90ea43648df587216eb8296f3e

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

Filesize
429B

MD5
f0a116b04b76879d36856c1265f2ee9c

SHA1
477f5b5598f831f3468cd354b44eb8a196f7f456

SHA256
2f5a12d3c67c5450e96659f8299966459992bc1ffde8c2bd535af5e96b8e2a2d

SHA512
830cdfb0074d467c99f6fa789937f52de4ee358d06134065d3c3a4cfabd5e786a9c50193fa21816cd5945742e9914f7cfb78f4080357fe8ac6db56bd6662b225

Download Submit
memory/3040-0-0x000007FEF50C3000-0x000007FEF50C4000-memory.dmp

Filesize
4KB

Download
memory/3040-1-0x00000000008B0000-0x00000000008FC000-memory.dmp

Filesize
304KB

Download
memory/3040-22-0x000007FEF50C0000-0x000007FEF5AAC000-memory.dmp

Filesize
9.9MB

Download
memory/3040-23-0x000007FEF50C3000-0x000007FEF50C4000-memory.dmp

Filesize
4KB

Download
memory/3040-24-0x000007FEF50C0000-0x000007FEF5AAC000-memory.dmp

Filesize
9.9MB

Download
memory/3040-56-0x000007FEF50C0000-0x000007FEF5AAC000-memory.dmp

Filesize
9.9MB

Download