44caliber | d4917f32cf3755b07badf1179d6717d4f17618cb68184f0dda48f4a4bbb45376

Resubmissions

26-06-2024 10:20

240626-mc9jdasfmr 10

26-06-2024 10:17

240626-mbemlssepl 10

Analysis

max time kernel
30s
max time network
16s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
26-06-2024 10:17

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General

Target

Loader.exe
Size

304KB
MD5

f896c2bfec649637e85c463e3a70b2a6
SHA1

04d65945a3b79ee5b48a7e7e22fd24c8198fe332
SHA256

d4917f32cf3755b07badf1179d6717d4f17618cb68184f0dda48f4a4bbb45376
SHA512

0fed9a755f93198e795aac73aff0e17478cd51ffb9c19f80fdfdaf53374b32e2016bf83f0415f253b6f76e736cb36fad5269021d73972749c3d3d84206c6ebe0
SSDEEP

6144:bFcT6MDdbICydeBvtCikGW9mhL8PzeVAOe044E:bFK1CikGemQHOeGE

Score

10^/10

44caliber blackguard persistence spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1255437795820966010/0VVoLF2QZxnBkoGw_P4ovEIbuHZLKgsoVU8zu2nEJgchI5ahmWwv98_frx1Jjvk7GNic

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
BlackGuard
Infostealer first seen in Late 2021.
stealer blackguard
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Loader.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Loader.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Loader.exe\""	Loader.exe

Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

3 api.ipify.org
10 freegeoip.app
11 freegeoip.app

flow	ioc
3	api.ipify.org
10	freegeoip.app
11	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:

Loader.exe

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Loader.exe

pid process

400 Loader.exe
400 Loader.exe
400 Loader.exe
400 Loader.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Loader.exe

description pid process

Token: SeDebugPrivilege 400 Loader.exe

pid	process
400	Loader.exe
400	Loader.exe
400	Loader.exe
400	Loader.exe

description	pid	process
Token: SeDebugPrivilege	400	Loader.exe

C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- Adds Run key to start application
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:400

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\44\Process.txt
Filesize
1KB

MD5
0f89d882a626748e8834d3ffd8321d6d

SHA1
161757dc4eaeb7b300c202cb5087b17cfcbb33b5

SHA256
91e68b7af0f207f7dc355071d0579ec7a3a05ef1ef80ad844464569674280281

SHA512
98f675527b9b3090d94181458829134c3ca1d07b2fd9831cf883065b2b5c6b6da1c9d5230c554b7ff947462e48a913c272f656d7bc19a50a9d123091ef6df45d

Download Submit
C:\Users\Admin\AppData\Local\44\Process.txt
Filesize
1KB

MD5
3686856a864cfd5df04e2911ed2eb56d

SHA1
653a8078007b856670ff41530f96c35cb3e21153

SHA256
0bfe2db65075c9720f3c9abbe047f63797be04d252aa57f811b307d1370be52f

SHA512
83b6ab8e02b12189c98d72b4555d3abd0d3bdb4ed7b2addcf973779af8ba18da2e58412de89c79690c87f82b48d40cadf39cc9272e4555d97f91341125e95ec3

Download Submit
memory/400-0-0x00000140E4C70000-0x00000140E4CC2000-memory.dmp

Filesize
328KB

Download
memory/400-1-0x00007FFE76233000-0x00007FFE76235000-memory.dmp

Filesize
8KB

Download
memory/400-2-0x00007FFE76230000-0x00007FFE76CF1000-memory.dmp

Filesize
10.8MB

Download
memory/400-121-0x00007FFE76230000-0x00007FFE76CF1000-memory.dmp

Filesize
10.8MB

Download