44caliber | 26ef72d7170fa0aa8ffab8695637d465040d1e51a8ba03a22855d7abfb902fbe

General

Target

8a098265737317cd7bf7bbef762b81c1.exe
Size

2.2MB
MD5

8a098265737317cd7bf7bbef762b81c1
SHA1

e1c206f8914af7b22b4cc0af74966723faefd1bd
SHA256

26ef72d7170fa0aa8ffab8695637d465040d1e51a8ba03a22855d7abfb902fbe
SHA512

1a66997af3559b58db357e021ccce53a5de87fa47c5fba4c175f930792b0c8b2ec43a67823df7112e9b662935bbc81b0f367912ab5d729ec076d8742df7a9d69
SSDEEP

24576:kJKWsWCN4jTYnUg5cb4xBNJhzuVy5rlZvUvb9CxxPkkz8V5p80kd2pkP4ij/v7IT:kJ2W/oUr4DNzzXrT4kMVfzhGN7es/K

Score

10^/10

44caliber evasion spyware stealer trojan

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/850985103400108043/qMVlcxRCEtOy4d0lLo-ckGGqIgWka8O5mwrGC7NwW7qRJs5beglorhRUk-uRy4jQ1Cbz

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

8a098265737317cd7bf7bbef762b81c1.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 8a098265737317cd7bf7bbef762b81c1.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	8a098265737317cd7bf7bbef762b81c1.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

8a098265737317cd7bf7bbef762b81c1.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	8a098265737317cd7bf7bbef762b81c1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	8a098265737317cd7bf7bbef762b81c1.exe

Executes dropped EXE 2 IoCs

Processes:

Insidious.exeSpy IDChanger (2).exe

pid process

2732 Insidious.exe
2740 Spy IDChanger (2).exe
Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

8a098265737317cd7bf7bbef762b81c1.exe

description ioc process

Key opened \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Software\Wine 8a098265737317cd7bf7bbef762b81c1.exe
Loads dropped DLL 2 IoCs

Processes:

8a098265737317cd7bf7bbef762b81c1.exe

pid process

2088 8a098265737317cd7bf7bbef762b81c1.exe
2088 8a098265737317cd7bf7bbef762b81c1.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
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

pid	process
2732	Insidious.exe
2740	Spy IDChanger (2).exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Software\Wine	8a098265737317cd7bf7bbef762b81c1.exe

pid	process
2088	8a098265737317cd7bf7bbef762b81c1.exe
2088	8a098265737317cd7bf7bbef762b81c1.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

8a098265737317cd7bf7bbef762b81c1.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	8a098265737317cd7bf7bbef762b81c1.exe

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
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

8a098265737317cd7bf7bbef762b81c1.exe

pid process

2088 8a098265737317cd7bf7bbef762b81c1.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
4	freegeoip.app
5	freegeoip.app

pid	process
2088	8a098265737317cd7bf7bbef762b81c1.exe

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:

Insidious.exe

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

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

8a098265737317cd7bf7bbef762b81c1.exeSpy IDChanger (2).exeInsidious.exe

pid process

2088 8a098265737317cd7bf7bbef762b81c1.exe
2740 Spy IDChanger (2).exe
2732 Insidious.exe
2732 Insidious.exe
2732 Insidious.exe
2732 Insidious.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Insidious.exe

description pid process

Token: SeDebugPrivilege 2732 Insidious.exe

pid	process
2088	8a098265737317cd7bf7bbef762b81c1.exe
2740	Spy IDChanger (2).exe
2732	Insidious.exe
2732	Insidious.exe
2732	Insidious.exe
2732	Insidious.exe

description	pid	process
Token: SeDebugPrivilege	2732	Insidious.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

8a098265737317cd7bf7bbef762b81c1.exe

description	pid	process	target process
PID 2088 wrote to memory of 2732	2088	8a098265737317cd7bf7bbef762b81c1.exe	Insidious.exe
PID 2088 wrote to memory of 2732	2088	8a098265737317cd7bf7bbef762b81c1.exe	Insidious.exe
PID 2088 wrote to memory of 2732	2088	8a098265737317cd7bf7bbef762b81c1.exe	Insidious.exe
PID 2088 wrote to memory of 2732	2088	8a098265737317cd7bf7bbef762b81c1.exe	Insidious.exe
PID 2088 wrote to memory of 2740	2088	8a098265737317cd7bf7bbef762b81c1.exe	Spy IDChanger (2).exe
PID 2088 wrote to memory of 2740	2088	8a098265737317cd7bf7bbef762b81c1.exe	Spy IDChanger (2).exe
PID 2088 wrote to memory of 2740	2088	8a098265737317cd7bf7bbef762b81c1.exe	Spy IDChanger (2).exe
PID 2088 wrote to memory of 2740	2088	8a098265737317cd7bf7bbef762b81c1.exe	Spy IDChanger (2).exe

C:\Users\Admin\AppData\Local\Temp\8a098265737317cd7bf7bbef762b81c1.exe
"C:\Users\Admin\AppData\Local\Temp\8a098265737317cd7bf7bbef762b81c1.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2088

C:\Users\Admin\AppData\Local\Temp\Insidious.exe
"C:\Users\Admin\AppData\Local\Temp\Insidious.exe"
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2732

C:\Users\Admin\AppData\Local\Temp\Spy IDChanger (2).exe
"C:\Users\Admin\AppData\Local\Temp\Spy IDChanger (2).exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2740

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

4

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\44\Process.txt
Filesize
373B

MD5
f4524a69b98e8c28be3a10f022c1ee2c

SHA1
82defa534be60612c77c5ec67ed867f007a86035

SHA256
5b82e3146a68ad694e3f485207609a3a04c86593da740b61c6032235affbd334

SHA512
1a43d9c022dca7fd503b6ee4621280a4768ef4b78c5506ae22114fd902eef5fd441057c94b32a75615b178173a184704d0605ffb738757b6a0c803fe99364e9f

Download Submit
C:\Users\Admin\AppData\Local\Temp\Spy IDChanger (2).exe
Filesize
60KB

MD5
f18cf2c76c5e8283a9d81640b198e01b

SHA1
29d2b98d71a263ee319cc65109e7325604d203d0

SHA256
b54d12aafa616be9524995f8df0527848776c08432556c178667e1429744e34d

SHA512
9543bd395281d41c7fafc470812bb920cbd70b918c864b3b245451a2b679ab621401c4857c8da000f952ae73e3c3f084aaaf74a15dc91966caf7680b84f1da04

Download Submit
\Users\Admin\AppData\Local\Temp\Insidious.exe
Filesize
274KB

MD5
cc0f9ce3587d6a0ee7390ccf8567b764

SHA1
0d6b82a85b3ccf11a01482832fcb28e8f97ed68c

SHA256
7ce1e233b1994f4db7ded9540bc77f86608a8fed62ed9f58a36aedb9be3723b8

SHA512
b56fe5774b378c5dc6c73f9807e07062286b20077cf6a2ba4328d40ae597c0896dd97f955571893fad9e2e88eecd8fb7ffee84261caaee0171cd33e04452e160

Download Submit
memory/2088-5-0x0000000000930000-0x0000000000931000-memory.dmp

Filesize
4KB

Download
memory/2088-4-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/2088-6-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2088-7-0x0000000000940000-0x0000000000941000-memory.dmp

Filesize
4KB

Download
memory/2088-0-0x0000000000400000-0x0000000000923000-memory.dmp

Filesize
5.1MB

Download
memory/2088-19-0x0000000000400000-0x0000000000923000-memory.dmp

Filesize
5.1MB

Download
memory/2088-3-0x0000000000400000-0x0000000000923000-memory.dmp

Filesize
5.1MB

Download
memory/2088-1-0x0000000077D90000-0x0000000077D92000-memory.dmp

Filesize
8KB

Download
memory/2732-20-0x0000000000A70000-0x0000000000ABA000-memory.dmp

Filesize
296KB

Download
memory/2732-21-0x000007FEF61E0000-0x000007FEF6BCC000-memory.dmp

Filesize
9.9MB

Download
memory/2732-22-0x00000000009C0000-0x0000000000A40000-memory.dmp

Filesize
512KB

Download
memory/2732-71-0x000007FEF61E0000-0x000007FEF6BCC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads