44caliber | 470914ddf3d824016ea5d00527b72f28e848ba4ef5cc48fc2d8ec65ca8d1f50d

Resubmissions

08-07-2024 08:24

240708-kasrqs1ajl 10

08-07-2024 08:21

240708-j9brtssfpf 10

Analysis

max time kernel
120s
max time network
128s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
08-07-2024 08:24

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General

Target

SolaraBootstrapper.exe
Size

304KB
MD5

57e127da218cf91a3bd38b177099edad
SHA1

40138b9611a8bc7dddc94bccd6d3847ca8ab881d
SHA256

470914ddf3d824016ea5d00527b72f28e848ba4ef5cc48fc2d8ec65ca8d1f50d
SHA512

55978686bdf56f7a9f1e9209d77494320390cb6ee5175de728028a7602e1e4c7624196eb5c6b8735f4b4b15dd132d1df8491d166f832580c6a2abeec460b4ef4
SSDEEP

6144:q/oT6MDdbICydeBrdEGHpcJWba23UVt3QA8e0F5B:q/WJEGHpQWeGUVtj8eUB

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1259774804534497342/8EZmH3dK1jU0Q5PXQDVD0hawjscINRdEpoQ85BKJvoPo3stGWAfUJE7lZN4wJCUTHdnG

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

3 freegeoip.app
2 freegeoip.app
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

SolaraBootstrapper.exe

pid process

2244 SolaraBootstrapper.exe
2244 SolaraBootstrapper.exe
2244 SolaraBootstrapper.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

SolaraBootstrapper.exe

description pid process

Token: SeDebugPrivilege 2244 SolaraBootstrapper.exe

flow	ioc
3	freegeoip.app
2	freegeoip.app

pid	process
2244	SolaraBootstrapper.exe
2244	SolaraBootstrapper.exe
2244	SolaraBootstrapper.exe

description	pid	process
Token: SeDebugPrivilege	2244	SolaraBootstrapper.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

SolaraBootstrapper.exe

description	pid	process	target process
PID 2244 wrote to memory of 2616	2244	SolaraBootstrapper.exe	WerFault.exe
PID 2244 wrote to memory of 2616	2244	SolaraBootstrapper.exe	WerFault.exe
PID 2244 wrote to memory of 2616	2244	SolaraBootstrapper.exe	WerFault.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
- Suspicious use of WriteProcessMemory
PID:2244

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2244 -s 1112
2⤵
PID:2616

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

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/2244-0-0x000007FEF59E3000-0x000007FEF59E4000-memory.dmp

Filesize
4KB

Download
memory/2244-1-0x0000000000D10000-0x0000000000D62000-memory.dmp

Filesize
328KB

Download
memory/2244-19-0x000007FEF59E0000-0x000007FEF63CC000-memory.dmp

Filesize
9.9MB

Download
memory/2244-20-0x000007FEF59E3000-0x000007FEF59E4000-memory.dmp

Filesize
4KB

Download
memory/2244-21-0x000007FEF59E0000-0x000007FEF63CC000-memory.dmp

Filesize
9.9MB

Download