44caliber | 8077c458cca5d446d5699c86d18cd2ed03507f59ab09582a1147e17291f33c65

Analysis

max time kernel
127s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
08-01-2024 17:28

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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.

Processes:

flow ioc

6 freegeoip.app
7 freegeoip.app

flow	ioc
6	freegeoip.app
7	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

3248 Robux.exe
3248 Robux.exe
3248 Robux.exe
3248 Robux.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Robux.exe

description pid process

Token: SeDebugPrivilege 3248 Robux.exe

pid	process
3248	Robux.exe
3248	Robux.exe
3248	Robux.exe
3248	Robux.exe

description	pid	process
Token: SeDebugPrivilege	3248	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:3248

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
735B

MD5
3fb84e8134965d11d5ef8bdbdda94464

SHA1
37780e672aca9f37b3235ab5d3e131b5228dd979

SHA256
f6992a03a245ca075c97d44b3dccc0a48bb19950c59d13703718843279744c57

SHA512
1c78df9f46be7315a474f05d48e1f343e47ef87858fd2498104660aa06723125aef32b1be1a590367968367a41d24ab1e9d1775b35b1a1018350a2a290bd442f

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

Filesize
1KB

MD5
250ced268cbea0a9a96a4ae7f61217c4

SHA1
e65dc68250a791e7a0c7acab1ddac719f64107fa

SHA256
f1ad8c6f17aceb2ac1ddee1700b4d21b0d37715e8a13cd2c8a2f573394b7845b

SHA512
b7a20b7f9f4b7067f7bf47bb6536f954269dd5df9276ab2910e48c5f1a39ad23c1993ba7a41622092bc5e24d85f99613aaf7c71660b663fb9250bf1cc6a34dba

Download Submit
memory/3248-0-0x000001A803160000-0x000001A8031AA000-memory.dmp

Filesize
296KB

Download
memory/3248-32-0x000001A81D690000-0x000001A81D6A0000-memory.dmp

Filesize
64KB

Download
memory/3248-26-0x00007FF9616D0000-0x00007FF962191000-memory.dmp

Filesize
10.8MB

Download
memory/3248-125-0x00007FF9616D0000-0x00007FF962191000-memory.dmp

Filesize
10.8MB

Download