44caliber | 38957fb3708884f1a8befb0c17b0fa81f57005a5de058772cc12bf357c548eab

Analysis

max time kernel
94s
max time network
100s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
14-09-2024 10:44

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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
1	freegeoip.app
2	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
4120	Loader.exe
4120	Loader.exe
4120	Loader.exe
4120	Loader.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4120	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:4120

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:\ProgramData\44\Process.txt

Filesize
1KB

MD5
e4366df7e3e6a583495b7ca37ea82874

SHA1
1c5db2dc5dc1cf1e932a29285653389e7115fb39

SHA256
957ff024d1b13e2142944ac64dc11b1107750bc93bd924db03f57d2eb11d1b3d

SHA512
2930d497b9c15ff5896b3942cd0a68a7442c451ad97736e30687f5f8d196c5202d4946928dcba4bc2854a1fbf972d68a60476d0cd5149b75635dec99b9a60d98

Download Submit
memory/4120-0-0x00007FF9D2A33000-0x00007FF9D2A35000-memory.dmp

Filesize
8KB

Download
memory/4120-1-0x000002342FD20000-0x000002342FD6A000-memory.dmp

Filesize
296KB

Download
memory/4120-31-0x00007FF9D2A30000-0x00007FF9D34F2000-memory.dmp

Filesize
10.8MB

Download
memory/4120-116-0x00007FF9D2A30000-0x00007FF9D34F2000-memory.dmp

Filesize
10.8MB

Download