44caliber | 8077c458cca5d446d5699c86d18cd2ed03507f59ab09582a1147e17291f33c65

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
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

3 freegeoip.app
6 freegeoip.app

flow	ioc
3	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:

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

1180 Robux.exe
1180 Robux.exe
1180 Robux.exe
1180 Robux.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Robux.exe

description pid process

Token: SeDebugPrivilege 1180 Robux.exe

pid	process
1180	Robux.exe
1180	Robux.exe
1180	Robux.exe
1180	Robux.exe

description	pid	process
Token: SeDebugPrivilege	1180	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:1180

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
750B

MD5
3a878dd599f65a62004b5701fcc5ee00

SHA1
0c0ff8ddc0bf1b9cb406b86339a4b17ce7bd98fe

SHA256
9ebda4b938442b7048a91942ef0947cda4d14e909c17eda9c38f80af3bcccce6

SHA512
06d603286d2b2ceb001e0f330326522c33b3bc04c588fdc483650162daedc9f6f1199fc126072e2d43cd8cf956e15813877605ad4ee858585b4de1ae65d1b2e7

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

Filesize
1KB

MD5
c1efb7c6a22419b0d8f4f589d91f41cc

SHA1
92ee0979f40a040a00a5266e9dbd60c212a3e7e3

SHA256
1f30b14d2112b4760722617829d8bc14ce0842bd5867953ca9ae0c0dc8785b4a

SHA512
c709224f5438ee7bad86dadb9f68ee7c689575e64b9809a22c7c2dd2211e831ea287bc4737b767e7d46833977deadf694d05f2e527a7441e1b60911e23b15648

Download Submit
memory/1180-0-0x00007FF8DC113000-0x00007FF8DC115000-memory.dmp

Filesize
8KB

Download
memory/1180-1-0x0000022C9DC80000-0x0000022C9DCCA000-memory.dmp

Filesize
296KB

Download
memory/1180-25-0x00007FF8DC110000-0x00007FF8DCBD1000-memory.dmp

Filesize
10.8MB

Download
memory/1180-120-0x00007FF8DC110000-0x00007FF8DCBD1000-memory.dmp

Filesize
10.8MB

Download