44caliber | 8077c458cca5d446d5699c86d18cd2ed03507f59ab09582a1147e17291f33c65

Analysis

max time kernel
44s
max time network
19s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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

2 freegeoip.app
3 freegeoip.app

flow	ioc
2	freegeoip.app
3	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

1744 Robux.exe
1744 Robux.exe
1744 Robux.exe
1744 Robux.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Robux.exe

description pid process

Token: SeDebugPrivilege 1744 Robux.exe

pid	process
1744	Robux.exe
1744	Robux.exe
1744	Robux.exe
1744	Robux.exe

description	pid	process
Token: SeDebugPrivilege	1744	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:1744

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Roaming\44\Process.txt
Filesize
370B

MD5
d44f50fa07eeb23cfa6cdc1e0f006eca

SHA1
d0c0211af1fff8becead8921d86b9091b44283f1

SHA256
faa23a54de5007faa5634629948859d1f609e3140d2384c118ec0f965ed7d46e

SHA512
77edc93636b6d94fd01f387c5956e9872260226e76a219f73e62683f463114f5e416e444493c54df21e2baad1b54c56027c3fafde17d10ef9ce51cadfa50a242

Download Submit
memory/1744-0-0x0000000000940000-0x000000000098A000-memory.dmp

Filesize
296KB

Download
memory/1744-1-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download
memory/1744-2-0x000000001AE10000-0x000000001AE90000-memory.dmp

Filesize
512KB

Download
memory/1744-49-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download