44caliber | 38957fb3708884f1a8befb0c17b0fa81f57005a5de058772cc12bf357c548eab

Analysis

max time kernel
93s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
14-09-2024 10:38

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General

Target

Loader.exe
Size

274KB
MD5

c0feb087f1cfa85fdb001e059f4c95c7
SHA1

1d9ab2eb37f85bea36f3e6ded442154181c96964
SHA256

38957fb3708884f1a8befb0c17b0fa81f57005a5de058772cc12bf357c548eab
SHA512

99d641dcebec431d905b83ea89b5b5fadd5c029215345834b604aeca23d25d236bbbe65c2d3179ad9d7597764d1791d9cfd18b3dc2d463acda6e1e72b6159a50
SSDEEP

6144:cf+BLtABPDsth6Ej/UZkI4TjkRy5fafTy4lI1D080T:vtK+I4TjkRyTF1DcT

Score

10^/10

44caliber credential_access spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1280107935317495880/Q8mmvXU6Bc1Q-R-2e0aAMsbedaMqyt0txCOBc8XSsTRNeUIepUtoX2DE4a6MxP9SzEFB

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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.

flow	ioc
3	freegeoip.app
7	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	Loader.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Loader.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1080	Loader.exe
1080	Loader.exe
1080	Loader.exe
1080	Loader.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1080	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:1080

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

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Downloads

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

Filesize
1KB

MD5
f4e6012ff7c5e2320ec1db640bc01769

SHA1
494357e41dffa955bf31266069942175acd738fa

SHA256
03c48b8e39022e49229b1b37817d065745ab759b2366e9d05886b5bed33a4147

SHA512
4e178565a2b1773ff139928ced2beb94b61c27edd123c605a3970e8e7d1c2c06074b0535d6af9757a0f94716ff6c2ea87889a9a3366648103d025c164bd00754

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

Filesize
986B

MD5
21ad9f5856c8b71063cd46fc50038923

SHA1
d4c796ee040c0b68191d5520b3a5daf21c993ca7

SHA256
93a12a85901180bf57a16369078e68759a49927b8b85afc25bf9f0e49e99643a

SHA512
12fea09c514dabc04b65d9c0a90e58410aa6af093fbf56277f5766832c1a698324fef0f788425a9d9e70ae511d79c8d52cc6b5163611991916cd65579901f553

Download Submit
memory/1080-1-0x0000017F2C240000-0x0000017F2C28A000-memory.dmp

Filesize
296KB

Download
memory/1080-0-0x00007FFDEB623000-0x00007FFDEB625000-memory.dmp

Filesize
8KB

Download
memory/1080-31-0x00007FFDEB620000-0x00007FFDEC0E1000-memory.dmp

Filesize
10.8MB

Download
memory/1080-119-0x00007FFDEB620000-0x00007FFDEC0E1000-memory.dmp

Filesize
10.8MB

Download