44caliber | 7a5f3666857fbcb8e1118d1a4366614c8c38d57bd2b8c699c0ab4ab2a89d390c

Analysis

max time kernel
30s
max time network
30s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
28-05-2024 22:33

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General

Target

Insidious.exe
Size

303KB
MD5

35cdf56ee1f012a2f44a0812c2a56105
SHA1

bf3475fa2d1709a731e87c02427ff4c0f04e1448
SHA256

7a5f3666857fbcb8e1118d1a4366614c8c38d57bd2b8c699c0ab4ab2a89d390c
SHA512

121694ad85f7ff5ba3c2f14382c3f5d339f3ffdc4de1c62fde3801a1e20d59735387c376c28acd14f6821e6bd28835f77e697c83653839d6977760ef220198e7
SSDEEP

6144:GfcT6MDdbICydeBO0wkGV6/dJLRF6LmA1D0WFX:GfKkkGV6jLDw1DzX

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1244019870862020659/tVxVfR9TpY0IyzuyrjO17JbdHh2NjTS8KiM8KzKmHrEAjcnkS2I3rTkkVdlqcBGrIYFZ

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.

Processes:

flow ioc

1 freegeoip.app
2 freegeoip.app

flow	ioc
1	freegeoip.app
2	freegeoip.app

Drops file in Windows directory 4 IoCs

Processes:

UserOOBEBroker.exe

description	ioc	process
File opened for modification	C:\Windows\Panther\UnattendGC\setupact.log	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\setuperr.log	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagerr.xml	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagwrn.xml	UserOOBEBroker.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Insidious.exe

pid process

4852 Insidious.exe
4852 Insidious.exe
4852 Insidious.exe
Suspicious behavior: LoadsDriver 6 IoCs

Processes:

pid

4
4
4
4
4
656
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Insidious.exe

description pid process

Token: SeDebugPrivilege 4852 Insidious.exe

pid	process
4852	Insidious.exe
4852	Insidious.exe
4852	Insidious.exe

pid
4
4
4
4
4
656

description	pid	process
Token: SeDebugPrivilege	4852	Insidious.exe

C:\Users\Admin\AppData\Local\Temp\Insidious.exe
"C:\Users\Admin\AppData\Local\Temp\Insidious.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4852

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc
1⤵
PID:3332

C:\Windows\System32\oobe\UserOOBEBroker.exe
C:\Windows\System32\oobe\UserOOBEBroker.exe -Embedding
1⤵
- Drops file in Windows directory
PID:1432

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe
C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe -Embedding
1⤵
PID:2888

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DevicesFlow -s DevicesFlowUserSvc
1⤵
PID:4496

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe
C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe -Embedding
1⤵
PID:4084

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\logs\Common\FileCoAuth-2024-5-28.2234.2888.1.odl
Filesize
706B

MD5
f18fc797ead237c268c937887532f835

SHA1
862aa51f899727e6cdec45a275079f98c3de9ae7

SHA256
ae44aa4c2841ede8ebe51d8db451853709eb3fe18dfba2ec5cc5ff6a00246baf

SHA512
e9f94eea2828ae984d48c59afff3969faee99c890a3fe0bb225877299f2f6c3482ed3f54b5a03139c4c925726b0438e620354db366648f290496c6a6f4ba47ce

Download Submit
memory/4852-0-0x00007FF991AE3000-0x00007FF991AE5000-memory.dmp

Filesize
8KB

Download
memory/4852-1-0x0000016B6E8F0000-0x0000016B6E942000-memory.dmp

Filesize
328KB

Download
memory/4852-31-0x00007FF991AE0000-0x00007FF9925A2000-memory.dmp

Filesize
10.8MB

Download
memory/4852-32-0x00007FF991AE0000-0x00007FF9925A2000-memory.dmp

Filesize
10.8MB

Download