44caliber | 1dd828521ed3c93e5da0bf56cf25dd789d887fe12e1498081f6baad35850b25e

Analysis

max time kernel
120s
max time network
131s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
10-10-2023 20:29

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General

Target

UnnamedFree.exe
Size

274KB
MD5

78ae73a2befd88689698f392a0df4468
SHA1

f4294f0b07401cada2c4411deda7e2070dd489f4
SHA256

004fbef0b21fbd40bfb0b81356cd8d0423d94a0cf580ab8bc629c5204515e6b7
SHA512

b597feaa687e5c11d1fa72d83b2a772217154311b61894a76009012fa0c29a0f5c5ce6eccde2095d60269f06e1310fbb6b8e4133d392b367cf5101a1bd0a0d88
SSDEEP

6144:Nf+BLtABPDR45GpbeKpwaUxnaGqqlYeJelA1D0Wl1:f4sFKaUxnaslYep1D/1

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/972090409700438017/FHYZJLIDFB1b4XU06S3DBw5xGN0xv6Ab2vtU1t8_ONL8owU3Qa0pE7RqDTsmfc1lxsPy

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:

UnnamedFree.exe

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

UnnamedFree.exe

pid process

2472 UnnamedFree.exe
2472 UnnamedFree.exe
2472 UnnamedFree.exe
2472 UnnamedFree.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

UnnamedFree.exe

description pid process

Token: SeDebugPrivilege 2472 UnnamedFree.exe

pid	process
2472	UnnamedFree.exe
2472	UnnamedFree.exe
2472	UnnamedFree.exe
2472	UnnamedFree.exe

description	pid	process
Token: SeDebugPrivilege	2472	UnnamedFree.exe

C:\Users\Admin\AppData\Local\Temp\UnnamedFree.exe
"C:\Users\Admin\AppData\Local\Temp\UnnamedFree.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2472

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:\ProgramData\44\Process.txt

Filesize
376B

MD5
583ecb13fd0527530a04a2cef30f2028

SHA1
082d2984c122fe9ee20a4a0f2f5f8f28f924afe5

SHA256
8fa22ce333fd46d7443a2eb24dc13e130f107ab49a01a9576a2f0721edf3d72d

SHA512
45e9e4873f4a35b5458d1325bbc824147bbcfc78930cd9ef10a8cfa82216b50c15be24da2a693df2c1833f3fdb1d93d520e63b880be81c4de9031d490db7a351

Download Submit
memory/2472-0-0x00000000009A0000-0x00000000009EA000-memory.dmp

Filesize
296KB

Download
memory/2472-1-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

Filesize
9.9MB

Download
memory/2472-2-0x0000000002150000-0x00000000021D0000-memory.dmp

Filesize
512KB

Download
memory/2472-21-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

Filesize
9.9MB

Download
memory/2472-49-0x0000000002150000-0x00000000021D0000-memory.dmp

Filesize
512KB

Download
memory/2472-51-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

Filesize
9.9MB

Download