44caliber | 53dd67f00fea6509b437e697d5d9c0b21ce0b696842325f5310a9084c6cc3f88

Analysis

max time kernel
119s
max time network
128s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24-02-2024 22:46

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General

Target

brohack.exe
Size

303KB
MD5

5fbc498bf0281af7a003d76738adc0f7
SHA1

96a94cab468c5996b1a42732ad0983f69be45c35
SHA256

53dd67f00fea6509b437e697d5d9c0b21ce0b696842325f5310a9084c6cc3f88
SHA512

025662fd7ab97e0bb4bcb12072839b8a3ce79a951c43b371b9a88a734e2206c88ee8e9dba696216a643ac17dc7043c6efae47200864906e33197a5b0a1264742
SSDEEP

6144:bRlT6MDdbICydeBV9suqPmlF62c6bmA1D09lu:bRT4uqPmH6Vg1DQu

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1209814880681463859/eV-PqCKGxfEhAj3f4ye1Dye3QnGKGcvqzlk_ma67nMX2y4MCq8PIBJYDQjaJzHmnQ3Ch

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.

flow	ioc
2	freegeoip.app
3	freegeoip.app

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2868	brohack.exe
2868	brohack.exe
2868	brohack.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2868	brohack.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 2460	2868	brohack.exe	28
PID 2868 wrote to memory of 2460	2868	brohack.exe	28
PID 2868 wrote to memory of 2460	2868	brohack.exe	28

C:\Users\Admin\AppData\Local\Temp\brohack.exe
"C:\Users\Admin\AppData\Local\Temp\brohack.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2868 -s 1128
  2⤵
  PID:2460

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

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2868-0-0x0000000001310000-0x0000000001362000-memory.dmp

Filesize
328KB

Download
memory/2868-1-0x000007FEF5AC0000-0x000007FEF64AC000-memory.dmp

Filesize
9.9MB

Download
memory/2868-2-0x000000001B0E0000-0x000000001B160000-memory.dmp

Filesize
512KB

Download
memory/2868-21-0x000007FEF5AC0000-0x000007FEF64AC000-memory.dmp

Filesize
9.9MB

Download
memory/2868-22-0x000000001B0E0000-0x000000001B160000-memory.dmp

Filesize
512KB

Download