44caliber | 969e1396d2f6932f10c6de742659667070e3d6158d9e5a7d9a16d7254ca3afc7

Analysis

max time kernel
24s
max time network
28s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01-07-2024 15:57

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General

Target

Solara.exe
Size

489KB
MD5

304fb1af10c5964bb55597f7c87e5ee3
SHA1

7774fd280dc74e4b8846f7938261b7e22373b576
SHA256

969e1396d2f6932f10c6de742659667070e3d6158d9e5a7d9a16d7254ca3afc7
SHA512

3602afe1c97c78cdb871fe40dde53fc8e9c4766532e3d4ffccacf189e5e38e32c9bd55c681085ec0d5e62d9340a0724537143afd2b39705550b8368561280453
SSDEEP

12288:7Jf/DdUC83OIgFc+tYjhLFH8rX+t498oHLMYK4K:7N/BUBb+tYjBFH8d7rM

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1247933862773002240/9Ju3ByvnHXBxYOd33G7M9TjSgLAgPA4USgjS9eElxrDf_-b46LbXhTNC2EWbI4iMzaGU

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

Solara.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation Solara.exe
Executes dropped EXE 2 IoCs

Processes:

Insidious.exeSolaraBootstrapper.exe

pid process

4720 Insidious.exe
5064 SolaraBootstrapper.exe
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
Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs

Web Service
T1102

Processes:

flow ioc

7 raw.githubusercontent.com
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

3 freegeoip.app
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

Insidious.exeSolaraBootstrapper.exe

pid process

4720 Insidious.exe
4720 Insidious.exe
4720 Insidious.exe
5064 SolaraBootstrapper.exe
5064 SolaraBootstrapper.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Insidious.exeSolaraBootstrapper.exe

description pid process

Token: SeDebugPrivilege 4720 Insidious.exe
Token: SeDebugPrivilege 5064 SolaraBootstrapper.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	Solara.exe

pid	process
4720	Insidious.exe
5064	SolaraBootstrapper.exe

flow	ioc
7	raw.githubusercontent.com

flow	ioc
3	freegeoip.app

pid	process
4720	Insidious.exe
4720	Insidious.exe
4720	Insidious.exe
5064	SolaraBootstrapper.exe
5064	SolaraBootstrapper.exe

description	pid	process
Token: SeDebugPrivilege	4720	Insidious.exe
Token: SeDebugPrivilege	5064	SolaraBootstrapper.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

Solara.exe

description	pid	process	target process
PID 4792 wrote to memory of 4720	4792	Solara.exe	Insidious.exe
PID 4792 wrote to memory of 4720	4792	Solara.exe	Insidious.exe
PID 4792 wrote to memory of 5064	4792	Solara.exe	SolaraBootstrapper.exe
PID 4792 wrote to memory of 5064	4792	Solara.exe	SolaraBootstrapper.exe
PID 4792 wrote to memory of 5064	4792	Solara.exe	SolaraBootstrapper.exe

C:\Users\Admin\AppData\Local\Temp\Solara.exe
"C:\Users\Admin\AppData\Local\Temp\Solara.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Users\Admin\AppData\Local\Temp\Insidious.exe
  "C:\Users\Admin\AppData\Local\Temp\Insidious.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4720
- C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe
  "C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5064

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

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Insidious.exe

Filesize
303KB

MD5
4983f032e0e84628d9e228436fdc5de6

SHA1
575cf03d4ab0f1c86bc864ce6da83cacdd9be621

SHA256
35bccba601ac65b50cbcdc2f953c7fe185163756858457e73aff0b6a02a3b445

SHA512
eb77f9f7f139492cdd38bf2ad9bdaf1aca58ca7b9d3cfc094e1b1aa9b6473631f8eab34ee68aa758c08fc36a824d9386de031b72b15cdbf11e9f0ceb961c109a

Download Submit
C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe

Filesize
13KB

MD5
6557bd5240397f026e675afb78544a26

SHA1
839e683bf68703d373b6eac246f19386bb181713

SHA256
a7fecfc225dfdd4e14dcd4d1b4ba1b9f8e4d1984f1cdd8cda3a9987e5d53c239

SHA512
f2399d34898a4c0c201372d2dd084ee66a66a1c3eae949e568421fe7edada697468ef81f4fcab2afd61eaf97bcb98d6ade2d97295e2f674e93116d142e892e97

Download Submit
memory/4720-21-0x00000214F5ED0000-0x00000214F5F22000-memory.dmp

Filesize
328KB

Download
memory/4720-23-0x00007FF9F8C03000-0x00007FF9F8C05000-memory.dmp

Filesize
8KB

Download
memory/4720-52-0x00007FF9F8C00000-0x00007FF9F96C1000-memory.dmp

Filesize
10.8MB

Download
memory/4720-59-0x00007FF9F8C00000-0x00007FF9F96C1000-memory.dmp

Filesize
10.8MB

Download
memory/5064-56-0x00000000750FE000-0x00000000750FF000-memory.dmp

Filesize
4KB

Download
memory/5064-57-0x0000000000A70000-0x0000000000A7A000-memory.dmp

Filesize
40KB

Download
memory/5064-58-0x0000000005440000-0x000000000544A000-memory.dmp

Filesize
40KB

Download