44caliber | 8077c458cca5d446d5699c86d18cd2ed03507f59ab09582a1147e17291f33c65

Analysis

max time kernel
148s
max time network
149s
platform
windows11-21h2_x64
resource
win11-20231215-en
resource tags

arch:x64arch:x86image:win11-20231215-enlocale:en-usos:windows11-21h2-x64system
submitted
31-01-2024 18:10

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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 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
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	robux.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	robux.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2336	robux.exe
2336	robux.exe
2336	robux.exe
2336	robux.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2336	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:2336

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

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Downloads

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

Filesize
348B

MD5
6a41d84e3c9ce26f7ce016fcf640074f

SHA1
b7985ea8eae45c46cc55fdd23bd46cfcdb613cd0

SHA256
2b040448d58fd2a5940862c65d2946bce473eff4d298f2e0befc3eae6a43e758

SHA512
d0fa353c23297146631f5db663324c8caa43673ada991de88c44d254a4009304bc5f47d9b95c1717978207371dfecc14da158e306776dda8e6a925b0137546a9

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

Filesize
934B

MD5
ef218771839360f7ed0658eedec1cf58

SHA1
b5f18e9ebb544549984e8a66f9525bc3faa01b88

SHA256
2940d8680212fc4fa173f2e31c1f99f484cb08e4e13f8b83651a55035d41ec28

SHA512
b980877a6d61e6e9ba28d6ed59ef2bb971bad9562bfacb8d0966c59380fe327df98c22f18b4c4c8d9baf1d11ceb793dc5f983c5a0f0c103cab36207951db9fdd

Download Submit
memory/2336-0-0x0000015EB3690000-0x0000015EB36DA000-memory.dmp

Filesize
296KB

Download
memory/2336-31-0x0000015ECDD60000-0x0000015ECDD70000-memory.dmp

Filesize
64KB

Download
memory/2336-30-0x00007FF8985B0000-0x00007FF899072000-memory.dmp

Filesize
10.8MB

Download
memory/2336-111-0x00007FF8985B0000-0x00007FF899072000-memory.dmp

Filesize
10.8MB

Download