44caliber | 902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e

General

Target

902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe
Size

303KB
MD5

ed2ba312101c8e6860e12b439190efd2
SHA1

c0eeefeea67ea0930e690e3d764cf58762abe7bf
SHA256

902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e
SHA512

0138a0b34ad44f0e3da7c0a1950e35e7d98e6b21f9c517a246d57382e1fe76268c84e62061f329daf159e947afdc6cef6e9db8d4d01670c69e768219cee29639

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/940603138866548747/iK_mJn3uZkhsOGcPCb1oD8P_Ng4y0gU75tAl36SdkiDuyN71SOCzAe43fyWh488hj7EO

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 2776 created 1516 2776 WerFault.exe 902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.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
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

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

Processes:

WerFault.exe

pid pid_target process target process

3184 1516 WerFault.exe 902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe

description	pid	process	target process
PID 2776 created 1516	2776	WerFault.exe	902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe

flow	ioc
5	freegeoip.app
6	freegeoip.app

pid	pid_target	process	target process
3184	1516	WerFault.exe	902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exeWerFault.exe

pid	process
1516	902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe
1516	902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe
1516	902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe
3184	WerFault.exe
3184	WerFault.exe
1516	902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe

description pid process

Token: SeDebugPrivilege 1516 902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe

description	pid	process
Token: SeDebugPrivilege	1516	902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WerFault.exe

description	pid	process	target process
PID 2776 wrote to memory of 1516	2776	WerFault.exe	902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe
PID 2776 wrote to memory of 1516	2776	WerFault.exe	902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe

C:\Users\Admin\AppData\Local\Temp\902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe
"C:\Users\Admin\AppData\Local\Temp\902683505c95e889efddf689d20757d7dbe7958330f089660f042ff15d63548e.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1516

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1516 -s 1544
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:3184

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 188 -p 1516 -ip 1516
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:2776

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1516-130-0x0000000000EB0000-0x0000000000F02000-memory.dmp

Filesize
328KB

Download
memory/1516-131-0x00007FFC2C5F3000-0x00007FFC2C5F5000-memory.dmp

Filesize
8KB

Download
memory/1516-132-0x000000001C750000-0x000000001C752000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads