44caliber | 29e74d69dbe506f07c91cd245427379aebc67b1c24dafc2cd0bde49ed6fd5cee

Analysis

max time kernel
61s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
11-04-2023 19:41

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General

Target

7zip.exe
Size

303KB
MD5

f9484530eef5af91375b16ad1312dd29
SHA1

0bf165ea23cf50314f63efc6b1fe70dfc513fc9a
SHA256

29e74d69dbe506f07c91cd245427379aebc67b1c24dafc2cd0bde49ed6fd5cee
SHA512

6683fb523fed816538c763859cbad5805b03334521d4ca83be1fff30d8cb84bc836ae1612d677accb984000d45644bfcadf9618e63ede98e2643b5702d93c0ba
SSDEEP

6144:n+AC6MDdbICydeBWJaDNnqrMtt1KLIbldMWA1D0Usje:n+vzDNnqrqYd1Dkje

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1095429503737675886/XSOjpaYnkVlwzQqXu4kvtIMhmZQVCMFwUVjdoKgnPXh4ER5XWIZ-0wzCDA36bKxszrIs

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
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
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

4 freegeoip.app
5 freegeoip.app
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1180 4144 WerFault.exe 7zip.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

7zip.exe

pid process

4144 7zip.exe
4144 7zip.exe
4144 7zip.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

7zip.exe

description pid process

Token: SeDebugPrivilege 4144 7zip.exe

flow	ioc
4	freegeoip.app
5	freegeoip.app

pid	pid_target	process	target process
1180	4144	WerFault.exe	7zip.exe

pid	process
4144	7zip.exe
4144	7zip.exe
4144	7zip.exe

description	pid	process
Token: SeDebugPrivilege	4144	7zip.exe

C:\Users\Admin\AppData\Local\Temp\7zip.exe
"C:\Users\Admin\AppData\Local\Temp\7zip.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4144

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 4144 -s 1444
2⤵
- Program crash
PID:1180

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 448 -p 4144 -ip 4144
1⤵
PID:792

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

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Downloads

memory/4144-133-0x0000000000670000-0x00000000006C2000-memory.dmp

Filesize
328KB

Download
memory/4144-145-0x0000000000C20000-0x0000000000C30000-memory.dmp

Filesize
64KB

Download