44caliber | 12a8d265fe2c0fb139d2dc9994ebdfaf7aea93a2ecc18dc4e132f1a04d36eda6

Analysis

max time kernel
123s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02-08-2024 16:37

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General

Target

SolaraBootstrapper.exe
Size

303KB
MD5

7553c649cdd15e01bc47cfa2dc88fdae
SHA1

1ad33f546146e52d05e667f0907262c1e55cb958
SHA256

12a8d265fe2c0fb139d2dc9994ebdfaf7aea93a2ecc18dc4e132f1a04d36eda6
SHA512

b40c066725b3f9ece6f75dd11598ad73f702b608253a4fa990774d2a61433b7a8218e19c3f5b348b62d18f533069f0cb228bcd5904497e98cd8f77d94a9d1849
SSDEEP

6144:k1E0T6MDdbICydeB1MnyCvG/9GzC6jmA1D0Kzp:k1z6yCvGFG+Y1Dtp

Score

10^/10

44caliber credential_access spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1256365156401680444/Q4ybvTW8-P8cHM7v5CKOThKUJqTZ4f03jPUNC4To8TouPRnWl442RcsKLBOptm6uvg63

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

1 freegeoip.app
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

SolaraBootstrapper.exe

pid process

4924 SolaraBootstrapper.exe
4924 SolaraBootstrapper.exe
4924 SolaraBootstrapper.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

SolaraBootstrapper.exe

description pid process

Token: SeDebugPrivilege 4924 SolaraBootstrapper.exe

flow	ioc
1	freegeoip.app

pid	process
4924	SolaraBootstrapper.exe
4924	SolaraBootstrapper.exe
4924	SolaraBootstrapper.exe

description	pid	process
Token: SeDebugPrivilege	4924	SolaraBootstrapper.exe

C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe
"C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4924

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4924-1-0x00007FFA93763000-0x00007FFA93765000-memory.dmp

Filesize
8KB

Download
memory/4924-0-0x0000025781F40000-0x0000025781F92000-memory.dmp

Filesize
328KB

Download
memory/4924-31-0x00007FFA93760000-0x00007FFA94221000-memory.dmp

Filesize
10.8MB

Download
memory/4924-32-0x00007FFA93760000-0x00007FFA94221000-memory.dmp

Filesize
10.8MB

Download