44caliber | b2fa3170b65e72aaf86c381aef876ea2cd53812a7928d6bd5ee10d9f80a8da1c

Analysis

max time kernel
240s
max time network
275s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
01-02-2024 15:22

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General

Target

8739059e823d0546bec6151fd4feac47.exe
Size

1.2MB
MD5

8739059e823d0546bec6151fd4feac47
SHA1

84290df98276fae83555efe09b155fe5bac9dd94
SHA256

b2fa3170b65e72aaf86c381aef876ea2cd53812a7928d6bd5ee10d9f80a8da1c
SHA512

f1f0533f570a9b7c340f6f69850d0a878b0d9ea6ff0170defde96b1df4a5749509b6b826e8de864cdcb376a4549e5382593aaed2e99350bac3295047bfd9bd7a
SSDEEP

24576:oRvt2ZygClb0xvqEcS07g6RUChgQpVmSP+HV/mi7LZtj1nGzcgx:oRz0xv9cS0geUopVxO5DLZtpnGzp

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/876771304244662292/PWg2lXTJKRJucms_8CouoIhUP-0bUcNBN7KReSAqvJC9et4O0uOlq-Ft_yf0uJsKO0hO

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
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

8739059e823d0546bec6151fd4feac47.exe

pid process

2812 8739059e823d0546bec6151fd4feac47.exe
2812 8739059e823d0546bec6151fd4feac47.exe

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:

8739059e823d0546bec6151fd4feac47.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	8739059e823d0546bec6151fd4feac47.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	8739059e823d0546bec6151fd4feac47.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

8739059e823d0546bec6151fd4feac47.exe

pid	process
2812	8739059e823d0546bec6151fd4feac47.exe
2812	8739059e823d0546bec6151fd4feac47.exe
2812	8739059e823d0546bec6151fd4feac47.exe
2812	8739059e823d0546bec6151fd4feac47.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

8739059e823d0546bec6151fd4feac47.exe

description pid process

Token: SeDebugPrivilege 2812 8739059e823d0546bec6151fd4feac47.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

8739059e823d0546bec6151fd4feac47.exe

pid process

2812 8739059e823d0546bec6151fd4feac47.exe

description	pid	process
Token: SeDebugPrivilege	2812	8739059e823d0546bec6151fd4feac47.exe

C:\Users\Admin\AppData\Local\Temp\8739059e823d0546bec6151fd4feac47.exe
"C:\Users\Admin\AppData\Local\Temp\8739059e823d0546bec6151fd4feac47.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2812

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\44\Browsers\Firefox\Bookmarks.txt
Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt
Filesize
398B

MD5
33902ac7d158c37b3bb587fbebe5c59a

SHA1
76d8a676d7ba5f2b7ea27ad334ea2019d5329589

SHA256
95a9c5d00bb63ded02f681e79e8a6fbff00c4c6bf7730674154784bbd010b29a

SHA512
5d5114de57a28e5515afc8e469748e982fc638cf1320d471f7dad9bff3ee6bd982d42fc6d859af2468b3b0b683d5d35cebcd6a7b0ce16bc3c2a24fca205d6dc4

Download Submit
memory/2812-0-0x00000000010B0000-0x000000000145C000-memory.dmp

Filesize
3.7MB

Download
memory/2812-2-0x00000000010B0000-0x000000000145C000-memory.dmp

Filesize
3.7MB

Download
memory/2812-3-0x00000000748B0000-0x0000000074F9E000-memory.dmp

Filesize
6.9MB

Download
memory/2812-4-0x0000000005350000-0x0000000005390000-memory.dmp

Filesize
256KB

Download
memory/2812-27-0x00000000010B0000-0x000000000145C000-memory.dmp

Filesize
3.7MB

Download
memory/2812-58-0x00000000010B0000-0x000000000145C000-memory.dmp

Filesize
3.7MB

Download
memory/2812-59-0x00000000748B0000-0x0000000074F9E000-memory.dmp

Filesize
6.9MB

Download