44caliber | 2f763b2468d091bc960bd4317cfed1675304662edae5255da5ef4dfc42e62c1b

Analysis

max time kernel
140s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19-01-2024 06:29

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General

Target

66ee6d3be4bf4eac3f989b15c84290f4.exe
Size

1.2MB
MD5

66ee6d3be4bf4eac3f989b15c84290f4
SHA1

1eb48fc2d5b17d0c7ff4c94cd49912468c0a6a07
SHA256

2f763b2468d091bc960bd4317cfed1675304662edae5255da5ef4dfc42e62c1b
SHA512

0d293136306bf437e2dff862b5e8e90a9e0c84d7efdc1d4fd12c2aed288b3ec78a8c127082302282e3789bc21d9efe206184c6ed5d6681ccc2318a6c122ca3d1
SSDEEP

24576:IZxrK1d73cWL62qMgqiz6aTCM1C6gHQUb6TPHRvlVk7V0:uxeHbcWDNiFTZ1CzkLHRTk7V

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/865584147081461791/cXeUQZDXCjKWrkaJ-3bJrhl6uSAZJXWp5_eKWccL93qrJuspqXX11np6a1xVpZdvlvsU

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

5 freegeoip.app
8 freegeoip.app
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

66ee6d3be4bf4eac3f989b15c84290f4.exe

pid process

4564 66ee6d3be4bf4eac3f989b15c84290f4.exe

flow	ioc
5	freegeoip.app
8	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:

66ee6d3be4bf4eac3f989b15c84290f4.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	66ee6d3be4bf4eac3f989b15c84290f4.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	66ee6d3be4bf4eac3f989b15c84290f4.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

66ee6d3be4bf4eac3f989b15c84290f4.exe

pid	process
4564	66ee6d3be4bf4eac3f989b15c84290f4.exe
4564	66ee6d3be4bf4eac3f989b15c84290f4.exe
4564	66ee6d3be4bf4eac3f989b15c84290f4.exe
4564	66ee6d3be4bf4eac3f989b15c84290f4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

66ee6d3be4bf4eac3f989b15c84290f4.exe

description pid process

Token: SeDebugPrivilege 4564 66ee6d3be4bf4eac3f989b15c84290f4.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

66ee6d3be4bf4eac3f989b15c84290f4.exe

pid process

4564 66ee6d3be4bf4eac3f989b15c84290f4.exe

description	pid	process
Token: SeDebugPrivilege	4564	66ee6d3be4bf4eac3f989b15c84290f4.exe

C:\Users\Admin\AppData\Local\Temp\66ee6d3be4bf4eac3f989b15c84290f4.exe
"C:\Users\Admin\AppData\Local\Temp\66ee6d3be4bf4eac3f989b15c84290f4.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4564

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\44\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

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

Filesize
733B

MD5
e0404dd08249119fdaad11d14842238d

SHA1
528e1462d6569adba3671987ae0c592943c85a10

SHA256
793c1a5bf310aada4c028ce496e33b1fdfc0dd4d3d5f74c92f654bd3cfac12a4

SHA512
ec3a45e5da2510dc6e5e663a236965cfe4eac7b5e3e2d0a966cfc5fc26d9209a4ebd30fbd92bb697b6f741a13a4cc4b00303d395d4e1dd7a9912aa8ac8a8744f

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

Filesize
1KB

MD5
8ba1f8aaf62ca858125253162c52fec0

SHA1
50232b5193696b718df8b538bf12545b06024e3f

SHA256
f1cdf6fdbcc795ab2547c681a27c065cf273b598ad6c56aabc708c18be3b4356

SHA512
7e6759565c81713cf8be398da36b8c0bcfdedf3af6c4c5aebb1087d3e3d221fb4da63edd2cc08c4f03564bc419aeb2f0e9d3460a4ac7223a0ab3af3b3fcbf495

Download Submit
memory/4564-2-0x00000000741D0000-0x0000000074980000-memory.dmp

Filesize
7.7MB

Download
memory/4564-4-0x0000000005960000-0x0000000005970000-memory.dmp

Filesize
64KB

Download
memory/4564-5-0x0000000006360000-0x00000000063F2000-memory.dmp

Filesize
584KB

Download
memory/4564-3-0x00000000008D0000-0x0000000000C7A000-memory.dmp

Filesize
3.7MB

Download
memory/4564-38-0x0000000006EF0000-0x0000000007494000-memory.dmp

Filesize
5.6MB

Download
memory/4564-1-0x00000000008D0000-0x0000000000C7A000-memory.dmp

Filesize
3.7MB

Download
memory/4564-0-0x00000000008D0000-0x0000000000C7A000-memory.dmp

Filesize
3.7MB

Download
memory/4564-122-0x0000000006DD0000-0x0000000006E36000-memory.dmp

Filesize
408KB

Download
memory/4564-126-0x00000000008D0000-0x0000000000C7A000-memory.dmp

Filesize
3.7MB

Download
memory/4564-127-0x00000000741D0000-0x0000000074980000-memory.dmp

Filesize
7.7MB

Download