44caliber | 38957fb3708884f1a8befb0c17b0fa81f57005a5de058772cc12bf357c548eab

Analysis

max time kernel
100s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
14-09-2024 10:44

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General

Target

Loader.exe
Size

274KB
MD5

c0feb087f1cfa85fdb001e059f4c95c7
SHA1

1d9ab2eb37f85bea36f3e6ded442154181c96964
SHA256

38957fb3708884f1a8befb0c17b0fa81f57005a5de058772cc12bf357c548eab
SHA512

99d641dcebec431d905b83ea89b5b5fadd5c029215345834b604aeca23d25d236bbbe65c2d3179ad9d7597764d1791d9cfd18b3dc2d463acda6e1e72b6159a50
SSDEEP

6144:cf+BLtABPDsth6Ej/UZkI4TjkRy5fafTy4lI1D080T:vtK+I4TjkRyTF1DcT

Score

10^/10

44caliber credential_access spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1280107935317495880/Q8mmvXU6Bc1Q-R-2e0aAMsbedaMqyt0txCOBc8XSsTRNeUIepUtoX2DE4a6MxP9SzEFB

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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
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

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1180	Loader.exe
1180	Loader.exe
1180	Loader.exe
1180	Loader.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1180	Loader.exe

C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1180

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

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
486B

MD5
975acaadbf8c9da84529942ab03e6914

SHA1
eadd1af537eef1be7078e90061a95fbffebf7751

SHA256
a94ffc741e321e6cb190e9a41216b3c149b443bc6998eed33b978025f1c99bd4

SHA512
13c7d540009f871f3b39b6f248b6b8f52074c762dca96253608e33b1243743e9e26be69567e6994ee5567b59fac7e366a3110c3139ee45679c6c04b1a9e1c819

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

Filesize
1KB

MD5
96695a2492b7a7e955807139bf262332

SHA1
a41308397d25c767a124b2b5793c9ceae8fd592a

SHA256
6792869d4f72b2e0f7c3a992e43fdf31246d3504ae2509b8e1b30703dff968c2

SHA512
d5bba05ec9fed9f7849493e55089fd395d081ba6bee19667a965d38fab42beaea0368817ce3923bbdd431322c58dd8179c046c4116f915e529d4786c7184a689

Download Submit
memory/1180-0-0x00007FFE73913000-0x00007FFE73915000-memory.dmp

Filesize
8KB

Download
memory/1180-1-0x0000015743500000-0x000001574354A000-memory.dmp

Filesize
296KB

Download
memory/1180-31-0x00007FFE73910000-0x00007FFE743D1000-memory.dmp

Filesize
10.8MB

Download
memory/1180-119-0x00007FFE73910000-0x00007FFE743D1000-memory.dmp

Filesize
10.8MB

Download