44caliber | 4557cb6de38a939358273d7d6a1f112ae08ef2c346fea7b5a9f4db4916214d3a

Analysis

max time kernel
119s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30-12-2023 14:19

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General

Target

1b38873770387cbb4a6f50acb3fabf4e.exe
Size

1.2MB
MD5

1b38873770387cbb4a6f50acb3fabf4e
SHA1

e28c6001fc49fb3ac0772f21e94b1d9f9f09d884
SHA256

4557cb6de38a939358273d7d6a1f112ae08ef2c346fea7b5a9f4db4916214d3a
SHA512

de5bcfed2490544ef21cf5c409ea06840a34518ac493922f8e822419c1a11ddada50dd63f4d6a780763c7997442aecf7e60c5b02ace3a27d8a9675b69744b368
SSDEEP

24576:q99ntjNH8JnYgIEw2bt/ynbMsQnbGFJqYahyj8Z8PgpcxWs:itjp8JDIEJPbc3vj8yPg+o

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/873606332538830858/lYlVeMKza_ZLedpS3S4LgiEdM25T6BM0zeX-3e35GNaPioU47pkpIbvYX2zXUbCa7nLH

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

3 freegeoip.app
2 freegeoip.app

flow	ioc
3	freegeoip.app
2	freegeoip.app

Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs

Processes:

1b38873770387cbb4a6f50acb3fabf4e.exe

pid	process
2504	1b38873770387cbb4a6f50acb3fabf4e.exe
2504	1b38873770387cbb4a6f50acb3fabf4e.exe
2504	1b38873770387cbb4a6f50acb3fabf4e.exe
2504	1b38873770387cbb4a6f50acb3fabf4e.exe
2504	1b38873770387cbb4a6f50acb3fabf4e.exe

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:

1b38873770387cbb4a6f50acb3fabf4e.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	1b38873770387cbb4a6f50acb3fabf4e.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	1b38873770387cbb4a6f50acb3fabf4e.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

1b38873770387cbb4a6f50acb3fabf4e.exe

pid	process
2504	1b38873770387cbb4a6f50acb3fabf4e.exe
2504	1b38873770387cbb4a6f50acb3fabf4e.exe
2504	1b38873770387cbb4a6f50acb3fabf4e.exe
2504	1b38873770387cbb4a6f50acb3fabf4e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

1b38873770387cbb4a6f50acb3fabf4e.exe

description pid process

Token: SeDebugPrivilege 2504 1b38873770387cbb4a6f50acb3fabf4e.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

1b38873770387cbb4a6f50acb3fabf4e.exe

pid process

2504 1b38873770387cbb4a6f50acb3fabf4e.exe

description	pid	process
Token: SeDebugPrivilege	2504	1b38873770387cbb4a6f50acb3fabf4e.exe

C:\Users\Admin\AppData\Local\Temp\1b38873770387cbb4a6f50acb3fabf4e.exe
"C:\Users\Admin\AppData\Local\Temp\1b38873770387cbb4a6f50acb3fabf4e.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2504

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\44\Process.txt
Filesize
397B

MD5
4ec190e3711f28fccdc7d9edef1a2cff

SHA1
831929fae05ee16d1ab20b445190642535887cd0

SHA256
645a75d9b2662cdb08d826bc65a662be87b4f5ac53326046e7a88e5d737582ba

SHA512
c2ecf773b7f2512bffa4debcd6190bbc6a19bc0329266824c69ffdfbe72a9842a76c0a428e6540794d9f4c52b160d4c0c41dd6eab28315e8340fb51a7f6f9ee1

Download Submit
memory/2504-0-0x0000000000AB0000-0x0000000000E62000-memory.dmp

Filesize
3.7MB

Download
memory/2504-1-0x0000000074A90000-0x000000007517E000-memory.dmp

Filesize
6.9MB

Download
memory/2504-2-0x0000000000AB0000-0x0000000000E62000-memory.dmp

Filesize
3.7MB

Download
memory/2504-3-0x00000000024E0000-0x0000000002520000-memory.dmp

Filesize
256KB

Download
memory/2504-26-0x0000000074A90000-0x000000007517E000-memory.dmp

Filesize
6.9MB

Download
memory/2504-27-0x00000000024E0000-0x0000000002520000-memory.dmp

Filesize
256KB

Download
memory/2504-58-0x0000000000AB0000-0x0000000000E62000-memory.dmp

Filesize
3.7MB

Download
memory/2504-59-0x0000000074A90000-0x000000007517E000-memory.dmp

Filesize
6.9MB

Download