44caliber | 433862c5f17d81ca847c161e0ab28cb38dcea2523150fed0ac6ee60c47031325

Analysis

max time kernel
23s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
04-08-2024 17:46

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General

Target

execute.exe
Size

303KB
MD5

7cfe3e4a9b6da9b158ebf7e0d1ab9945
SHA1

a238ffedd893f57dcfcd70fff18c37aef9fd416e
SHA256

cdcad2a6891cfaa9635c0718f3344280f8d02a78611bd6ca234e8bf22603613c
SHA512

006ef6f83b13afddf814226f00ddba4580f74939c9a051b9537bbe352cb213e4c366548927363f573d04bad69520c3b843b466fb86f700d2e9ef9caf2d33dd4b
SSDEEP

6144:9v9T6MDdbICydeBhbvsGfSDpbwko6jmA1D0Zi6:9vLFsGfSNsjY1DT6

Score

10^/10

44caliber credential_access spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1264290240290361368/HDo7Noqy1EZnwf2Slhpj8GKIwaCmP_A66Af1DGldm_aCLel95CQQWcTbmmU_vwpsIMZr

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

2 freegeoip.app
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

execute.exe

pid process

2660 execute.exe
2660 execute.exe
2660 execute.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

execute.exe

description pid process

Token: SeDebugPrivilege 2660 execute.exe

flow	ioc
2	freegeoip.app

pid	process
2660	execute.exe
2660	execute.exe
2660	execute.exe

description	pid	process
Token: SeDebugPrivilege	2660	execute.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

execute.exe

description	pid	process	target process
PID 2660 wrote to memory of 2928	2660	execute.exe	WerFault.exe
PID 2660 wrote to memory of 2928	2660	execute.exe	WerFault.exe
PID 2660 wrote to memory of 2928	2660	execute.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\execute.exe
"C:\Users\Admin\AppData\Local\Temp\execute.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2660 -s 1092
  2⤵
  PID:2928

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/2660-0-0x000007FEF58A3000-0x000007FEF58A4000-memory.dmp

Filesize
4KB

Download
memory/2660-1-0x0000000000F80000-0x0000000000FD2000-memory.dmp

Filesize
328KB

Download
memory/2660-20-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

Filesize
9.9MB

Download
memory/2660-21-0x000007FEF58A3000-0x000007FEF58A4000-memory.dmp

Filesize
4KB

Download
memory/2660-22-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

Filesize
9.9MB

Download