44caliber | 1dd828521ed3c93e5da0bf56cf25dd789d887fe12e1498081f6baad35850b25e

Analysis

max time kernel
12s
max time network
12s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
30-09-2023 21:22

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General

Target

UnnamedFree.exe
Size

274KB
MD5

78ae73a2befd88689698f392a0df4468
SHA1

f4294f0b07401cada2c4411deda7e2070dd489f4
SHA256

004fbef0b21fbd40bfb0b81356cd8d0423d94a0cf580ab8bc629c5204515e6b7
SHA512

b597feaa687e5c11d1fa72d83b2a772217154311b61894a76009012fa0c29a0f5c5ce6eccde2095d60269f06e1310fbb6b8e4133d392b367cf5101a1bd0a0d88
SSDEEP

6144:Nf+BLtABPDR45GpbeKpwaUxnaGqqlYeJelA1D0Wl1:f4sFKaUxnaslYep1D/1

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/972090409700438017/FHYZJLIDFB1b4XU06S3DBw5xGN0xv6Ab2vtU1t8_ONL8owU3Qa0pE7RqDTsmfc1lxsPy

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

13 freegeoip.app
14 freegeoip.app

flow	ioc
13	freegeoip.app
14	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:

UnnamedFree.exe

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

UnnamedFree.exe

pid process

3076 UnnamedFree.exe
3076 UnnamedFree.exe
3076 UnnamedFree.exe
3076 UnnamedFree.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

UnnamedFree.exe

description pid process

Token: SeDebugPrivilege 3076 UnnamedFree.exe

pid	process
3076	UnnamedFree.exe
3076	UnnamedFree.exe
3076	UnnamedFree.exe
3076	UnnamedFree.exe

description	pid	process
Token: SeDebugPrivilege	3076	UnnamedFree.exe

C:\Users\Admin\AppData\Local\Temp\UnnamedFree.exe
"C:\Users\Admin\AppData\Local\Temp\UnnamedFree.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3076

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

Replay Monitor

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Downloads

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

Filesize
90B

MD5
748a752bace6361723571fd845957e97

SHA1
bd8afa5989b1613397def5720084f4f70f7ec0b6

SHA256
0ce4084c68296dff031f2516ace4c744d32ebf0a07bc590e318c30f10e3c11bf

SHA512
f37e47cee21b6f6852345ffb2be11a6782c48255a627e4f1a032f89a19079b0f4d1aa8b145f5237cecce928f8ab1c753a79eefb286e009e101e2c8baab821ffa

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

Filesize
738B

MD5
fc57666171c0013d45aeabb85be4965f

SHA1
53d8187e249aa5ee446898543e6b37c1cab6f594

SHA256
e29a9f360680619aa925a944203cbddfc7292e906876af24a6696cf51218e165

SHA512
b51e3df19ee09a12f4663702b7f3b33de8f1258f0645b4de2b2284448cd4ea0c2f6ee11ce620fe9f07d84c26500a95d8e271f55d2b4e3470a0d8419a7d6ef28c

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

Filesize
1KB

MD5
179d1891821f05fbfc02c6a3b723f2bd

SHA1
b7af636f6dfd4fc72a12afd5b13ce45bb2b689a7

SHA256
6a5c6921e0a12c9d71e79407728395c4eb51a6fdcb9aa8e3b2cfe949948c0b79

SHA512
13af5590b722c953eca05a31c298e5699ed213b954f4f8c7723ac75d09b42e2fe874835652b321ceb070f98a81b2c00436944df1ad6ab4f1ebe4a114bddaa145

Download Submit
memory/3076-0-0x000002262A640000-0x000002262A68A000-memory.dmp

Filesize
296KB

Download
memory/3076-32-0x00007FF9A3060000-0x00007FF9A3B21000-memory.dmp

Filesize
10.8MB

Download
memory/3076-33-0x0000022644BB0000-0x0000022644BC0000-memory.dmp

Filesize
64KB

Download
memory/3076-123-0x00007FF9A3060000-0x00007FF9A3B21000-memory.dmp

Filesize
10.8MB

Download