44caliber | 89e5c693e84a62055fcf6e38acb193d544c3347754a39d86ab7b6319742bb1f4

General

Target

89e5c693e84a62055fcf6e38acb193d544c3347754a39d86ab7b6319742bb1f4.exe
Size

303KB
MD5

dfad3bb86c4fd82c7f37a7fa5d0d49db
SHA1

81337a5e58495185a19adab14535054ceb8d38d7
SHA256

89e5c693e84a62055fcf6e38acb193d544c3347754a39d86ab7b6319742bb1f4
SHA512

f45d49fe8fd1165cb4be2b280cd395c6886d463460d860ef59bb82608fc7038e6c675337560953dcefc8d18e694fa2873143bd72b26011449f5a8020cc4ef887

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/939242695203889253/K2Kjj5jZVJ0QGiMBHIT7L34EVSPW9XsX0tHuhdrgnQ-E319Do-SzXinJ4AzVIn0YszK4

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 5012 created 2368	5012	WerFault.exe	78

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.

flow	ioc
5	freegeoip.app
6	freegeoip.app

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4808	2368	WerFault.exe	78

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

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

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

pid	Process
2368	89e5c693e84a62055fcf6e38acb193d544c3347754a39d86ab7b6319742bb1f4.exe
2368	89e5c693e84a62055fcf6e38acb193d544c3347754a39d86ab7b6319742bb1f4.exe
2368	89e5c693e84a62055fcf6e38acb193d544c3347754a39d86ab7b6319742bb1f4.exe
4808	WerFault.exe
4808	WerFault.exe
2368	89e5c693e84a62055fcf6e38acb193d544c3347754a39d86ab7b6319742bb1f4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	89e5c693e84a62055fcf6e38acb193d544c3347754a39d86ab7b6319742bb1f4.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5012 wrote to memory of 2368	5012	WerFault.exe	78
PID 5012 wrote to memory of 2368	5012	WerFault.exe	78

C:\Users\Admin\AppData\Local\Temp\89e5c693e84a62055fcf6e38acb193d544c3347754a39d86ab7b6319742bb1f4.exe
"C:\Users\Admin\AppData\Local\Temp\89e5c693e84a62055fcf6e38acb193d544c3347754a39d86ab7b6319742bb1f4.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2368
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2368 -s 1668
  2⤵
  - Program crash
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4808

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 408 -p 2368 -ip 2368
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:5012

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/2368-130-0x0000020795330000-0x0000020795382000-memory.dmp

Filesize
328KB

Download
memory/2368-131-0x00007FFBF69B3000-0x00007FFBF69B5000-memory.dmp

Filesize
8KB

Download
memory/2368-132-0x00000207956F0000-0x00000207956F2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads