44caliber | c6bc499a80527fd29ec372ac626ae6ae27776de14ee83b15d37a97236e29465b

Analysis

max time kernel
15s
max time network
24s
platform
windows10-1703_x64
resource
win10-20240214-en
resource tags

arch:x64arch:x86image:win10-20240214-enlocale:en-usos:windows10-1703-x64system
submitted
18-02-2024 09:31

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General

Target

new winlocker buider lite.exe
Size

274KB
MD5

3e54f46726f891cbf75860b18e7c211a
SHA1

8823967efa7b979e34e8b7a0eca529eab4377f17
SHA256

c6bc499a80527fd29ec372ac626ae6ae27776de14ee83b15d37a97236e29465b
SHA512

47597edafa0fdbf54a6f850f964aa1078bb1fa1f1e82673e04af8d12d1c2c4e62f7550ff30b1207698678607cca8045c6b70d30c1ef533e7d4a72e0d044e222f
SSDEEP

6144:of+BLtABPD5lRuZrQWT0IQZQZ9qgMlI1D03wg:SlFK0IQZQXh1DHg

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1137391151696072804/iUyZWW_cx_XI9ln3zsr9LCtIFqjJAXtZ1pVtqyQ0I7Ar3nKxBrgEkQqr9b1pcXmV8sA_

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	new winlocker buider lite.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	new winlocker buider lite.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1416	new winlocker buider lite.exe
1416	new winlocker buider lite.exe
1416	new winlocker buider lite.exe
1416	new winlocker buider lite.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1416	new winlocker buider lite.exe

C:\Users\Admin\AppData\Local\Temp\new winlocker buider lite.exe
"C:\Users\Admin\AppData\Local\Temp\new winlocker buider lite.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1416

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:\ProgramData\44\Process.txt

Filesize
1KB

MD5
d7504419ead34c94c41bcbfa453f5aed

SHA1
c9c71beb211d8a330b74565b857525574382a7c4

SHA256
2c34553de4a19571f31227ccc7414861950d34ac5ec0a95a7c28ec1f4e8e5261

SHA512
99aef762ec9596d29afc7d32f5a2196c533a824fd70f43bee4f7fd998d0ed7f94dca1c704726fd9b80d1ca18ac114b39ed274287b26b959ac870504fb39ea4f1

Download Submit
C:\ProgramData\44\Process.txt

Filesize
1KB

MD5
4eac55e44be5748473c976633398f658

SHA1
58a6414c2f95756d6dcc475dbebd19c464f6e5f4

SHA256
6f08afc8af1e85cab925d6d234979d85da0dd0bae01a20485272e23b361abaca

SHA512
d547ed3c9a645f85995b78329014c9265cdbecb05225ceb6e4ac381c1b7cd26ff7796f289461b606a3a79dc0b91e874832d25f8df08de624aaa471deb4af3d8b

Download Submit
memory/1416-0-0x000001F52C1E0000-0x000001F52C22A000-memory.dmp

Filesize
296KB

Download
memory/1416-18-0x00007FF96D9B0000-0x00007FF96E39C000-memory.dmp

Filesize
9.9MB

Download
memory/1416-19-0x000001F546810000-0x000001F546820000-memory.dmp

Filesize
64KB

Download
memory/1416-95-0x00007FF96D9B0000-0x00007FF96E39C000-memory.dmp

Filesize
9.9MB

Download