44caliber | fd45e5b2e40a6a427bc0b2caf7d546a63a632adaa4fe7cb70a9173f74c4c54e2

Analysis

max time kernel
143s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-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
6 freegeoip.app

flow	ioc
5	freegeoip.app
6	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

3288 loader.exe
3288 loader.exe
3288 loader.exe
3288 loader.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

loader.exe

description pid process

Token: SeDebugPrivilege 3288 loader.exe

pid	process
3288	loader.exe
3288	loader.exe
3288	loader.exe
3288	loader.exe

description	pid	process
Token: SeDebugPrivilege	3288	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:3288

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

Replay Monitor

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Downloads

C:\ProgramData\44\Process.txt

Filesize
1KB

MD5
fd95a851259f483acf82e8db69762470

SHA1
7f57938d702e0a4afe9419ab23b542ff2d55fc38

SHA256
92f01385dd7fe192c23549af7050dae270205cbb04a9e1e34fbdfb5920c6e13d

SHA512
51eb3806e5405ad60700a8f49178e4e3041bd2f8cf223058e026bd63054f933f8471a241c1f12a980f9ab024b0eb7e746eb668fa4033f9dba94b0f338d563ccb

Download Submit
C:\ProgramData\44\Process.txt

Filesize
1KB

MD5
fd95a851259f483acf82e8db69762470

SHA1
7f57938d702e0a4afe9419ab23b542ff2d55fc38

SHA256
92f01385dd7fe192c23549af7050dae270205cbb04a9e1e34fbdfb5920c6e13d

SHA512
51eb3806e5405ad60700a8f49178e4e3041bd2f8cf223058e026bd63054f933f8471a241c1f12a980f9ab024b0eb7e746eb668fa4033f9dba94b0f338d563ccb

Download Submit
memory/3288-0-0x000001A040D40000-0x000001A040D8A000-memory.dmp

Filesize
296KB

Download
memory/3288-31-0x00007FF8F0550000-0x00007FF8F1011000-memory.dmp

Filesize
10.8MB

Download
memory/3288-32-0x000001A0411D0000-0x000001A0411E0000-memory.dmp

Filesize
64KB

Download
memory/3288-118-0x00007FF8F0550000-0x00007FF8F1011000-memory.dmp

Filesize
10.8MB

Download