44caliber | 8077c458cca5d446d5699c86d18cd2ed03507f59ab09582a1147e17291f33c65

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
10-09-2024 10:51

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General

Target

Robux.exe
Size

274KB
MD5

b3dca103204683157780d5562579d100
SHA1

61a249df0a3ce1849b7047e252a323c9f26e44c4
SHA256

8077c458cca5d446d5699c86d18cd2ed03507f59ab09582a1147e17291f33c65
SHA512

89c4335aafa72a286b34460790abe4aa9e035db269f9b5e451a85c98326aa87b31d60a6742125011a54f421283e11cc5cf56d7fccfdcdff95d36dac21abec556
SSDEEP

6144:Af+BLtABPDOpJTNN6eTSUdZ/pOlYeJqlA1D0FkB:ppYSSUdZ/olYet1DHB

Score

10^/10

44caliber credential_access spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/915691701547446283/wUW0ZMfS9Ea3nfJC3GBW1nyVurXzKmQnFhIAcuEwGucZF2JJhh8YakLcl2RpJb6iFOek

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.

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:

Robux.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	Robux.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Robux.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Robux.exe

pid process

2004 Robux.exe
2004 Robux.exe
2004 Robux.exe
2004 Robux.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Robux.exe

description pid process

Token: SeDebugPrivilege 2004 Robux.exe

pid	process
2004	Robux.exe
2004	Robux.exe
2004	Robux.exe
2004	Robux.exe

description	pid	process
Token: SeDebugPrivilege	2004	Robux.exe

C:\Users\Admin\AppData\Local\Temp\Robux.exe
"C:\Users\Admin\AppData\Local\Temp\Robux.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2004

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
431B

MD5
f666a88effb3ff65aa99ef8317fe686d

SHA1
1eec22e5224c53bd5f406097c148327b248427ad

SHA256
85004bbe3e65d70c3b409bd92fb519157a1d8ef61bf884ed04f667d117ff7114

SHA512
b2d58025fbdc422d98e215cf0f6da2a9d653870f8928cda03f05163f205bb06ac9c5eacc3709adfb8781777f80bfdeb688a0fd94b60de3f19bafa1b26e7a49fc

Download Submit
memory/2004-0-0x000007FEF5273000-0x000007FEF5274000-memory.dmp

Filesize
4KB

Download
memory/2004-1-0x0000000000030000-0x000000000007A000-memory.dmp

Filesize
296KB

Download
memory/2004-6-0x000007FEF5270000-0x000007FEF5C5C000-memory.dmp

Filesize
9.9MB

Download
memory/2004-52-0x000007FEF5270000-0x000007FEF5C5C000-memory.dmp

Filesize
9.9MB

Download