44caliber | b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b

Analysis

max time kernel
4294181s
max time network
124s
platform
windows7_x64
resource
win7-20220223-en
submitted
01-03-2022 18:12

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General

Target

b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe
Size

274KB
MD5

1774b03fe04c0912378903346f6d807a
SHA1

33fbaeeb05bfe3e985af80a4f400dbc236fa51bd
SHA256

b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b
SHA512

8a76d27bc58ccc481bbdaa726483bf84b8a5c3e6512b6259a26b64fffea697900edc1efe5405c9b6a6ac61fbcc8bc0653b506692dde7f1c1251692595bd4aec0

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/943405830781427732/bWrTiH0DBogSkJQzwQGoq_flifTRESk2r9Ezawioxg9zPGU0YKxSBP93A3sfQaAMshgX

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

flow	ioc
4	freegeoip.app
5	freegeoip.app

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe

pid	process
2036	b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe
2036	b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe
2036	b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe
2036	b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe

description pid process

Token: SeDebugPrivilege 2036 b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe

description	pid	process
Token: SeDebugPrivilege	2036	b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe

C:\Users\Admin\AppData\Local\Temp\b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe
"C:\Users\Admin\AppData\Local\Temp\b05617170e474f6689b3c8bbf653e48b3b335d9924140f891a44327fe10cec8b.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2036

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/2036-54-0x00000000001A0000-0x00000000001EA000-memory.dmp

Filesize
296KB

Download
memory/2036-55-0x000007FEF5263000-0x000007FEF5264000-memory.dmp

Filesize
4KB

Download
memory/2036-56-0x000000001B100000-0x000000001B102000-memory.dmp

Filesize
8KB

Download