44caliber | d5c05da57fa20048e35e6ef498b3dd0bcb92eaea3997e8a7009b38b8a15c4e86

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
12-10-2023 00:50

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General

Target

Yandex.exe
Size

274KB
MD5

40e3881d6c0898f6a5c24940b54a69a2
SHA1

f3da392ee4fb703255eff7ee8a83f23c2bb02987
SHA256

d5c05da57fa20048e35e6ef498b3dd0bcb92eaea3997e8a7009b38b8a15c4e86
SHA512

9013a696cda9be776f0a5ee66aece8716662121e69c5be056c8567eabed8fea91641e50714962438efb57da1b1ff1d4a2c3211e65be10a9e7833e647f700eb8b
SSDEEP

6144:ef+BLtABPDMtBBfn1Y0gIoHOQZafTy8lI1D0Cbg:1tVvgIoHO+x1DRg

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1155120137612034188/cdy5wHbWmzOOyiX6nZbn5OlBuBidB8er7f1281hl7JRUP1iVFGnh9s57SwGqJtsdtgrx

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

4 freegeoip.app
5 freegeoip.app

flow	ioc
4	freegeoip.app
5	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:

Yandex.exe

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Yandex.exe

pid process

2172 Yandex.exe
2172 Yandex.exe
2172 Yandex.exe
2172 Yandex.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Yandex.exe

description pid process

Token: SeDebugPrivilege 2172 Yandex.exe

pid	process
2172	Yandex.exe
2172	Yandex.exe
2172	Yandex.exe
2172	Yandex.exe

description	pid	process
Token: SeDebugPrivilege	2172	Yandex.exe

C:\Users\Admin\AppData\Local\Temp\Yandex.exe
"C:\Users\Admin\AppData\Local\Temp\Yandex.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2172

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

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Downloads

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

Filesize
255B

MD5
0cd4230e392eecbdfea816027ddc0ffd

SHA1
cdd9a87c2270490ddbf300eaef3820e8bde09f51

SHA256
83332bf7377da679d58d2ccb3e475b987a779628553437e128e0281d1bf913a4

SHA512
588f9505bc4faf265190fb663e34e658114f603bc438c0b77933e6c3aa5096ba02ab61ef164e3a56478d7c16d45061e7e36a5b7514039e56fc8b7af7e9923fbf

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

Filesize
371B

MD5
036b44469b912939b7d900f9133f0277

SHA1
dab9a8df2c174bbd09a304056784ed73d9c00d40

SHA256
79b195df72cee33eee48981176cbb347d9f76c2f626cc2c620246a5bc25508fd

SHA512
5cc86aa65619be80bd055e5c9c9d9da32b13a3e3b770bff0b61e14ccb5460c4dc58ba3214d6a4db33e47e5e0c0919a3a7433af3edd09965acc5cb885663f776d

Download Submit
memory/2172-0-0x0000000000EE0000-0x0000000000F2A000-memory.dmp

Filesize
296KB

Download
memory/2172-1-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

Filesize
9.9MB

Download
memory/2172-2-0x000000001A9B0000-0x000000001AA30000-memory.dmp

Filesize
512KB

Download
memory/2172-49-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

Filesize
9.9MB

Download