44caliber | 44cf30bb3e4623c4374ab4132bd419d3a63f119b36eaf66f1a5258e36df3b60a

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
07-01-2024 10:02

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General

Target

48ad7db5fb10dd9b1c6817d5a9c34865.exe
Size

2.2MB
MD5

48ad7db5fb10dd9b1c6817d5a9c34865
SHA1

2fd68670f13f6335a2361fbdd7ed6c36b9f4863c
SHA256

44cf30bb3e4623c4374ab4132bd419d3a63f119b36eaf66f1a5258e36df3b60a
SHA512

7782826d586098b94e2c10a801881e0104784406d9d496c98b2932a33b28f2b0724be7eb25f158223f84483795b4bb768f7e2ad15799c9cb4b2577888909c3fb
SSDEEP

49152:pSezyzdsk+1US6FOZyj2Zi8kwUP+9uNMYuv+ShQFZS:pSdsk+ySemg2Iw0+YChv+Shx

Score

10^/10

44caliber evasion spyware stealer trojan

Malware Config

Extracted

Family

44caliber

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:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 48ad7db5fb10dd9b1c6817d5a9c34865.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	48ad7db5fb10dd9b1c6817d5a9c34865.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:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	48ad7db5fb10dd9b1c6817d5a9c34865.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	48ad7db5fb10dd9b1c6817d5a9c34865.exe

Executes dropped EXE 2 IoCs

Processes:

Insidious — êîïèÿ.exe12312.exe

pid process

2732 Insidious — êîïèÿ.exe
2828 12312.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:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

description ioc process

Key opened \REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Wine 48ad7db5fb10dd9b1c6817d5a9c34865.exe
Loads dropped DLL 2 IoCs

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

pid process

2092 48ad7db5fb10dd9b1c6817d5a9c34865.exe
2092 48ad7db5fb10dd9b1c6817d5a9c34865.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 — êîïèÿ.exe
2828	12312.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Wine	48ad7db5fb10dd9b1c6817d5a9c34865.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	48ad7db5fb10dd9b1c6817d5a9c34865.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

2 freegeoip.app
3 freegeoip.app
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

pid process

2092 48ad7db5fb10dd9b1c6817d5a9c34865.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
2	freegeoip.app
3	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:

Insidious — êîïèÿ.exe

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

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe12312.exeInsidious — êîïèÿ.exe

pid	process
2092	48ad7db5fb10dd9b1c6817d5a9c34865.exe
2828	12312.exe
2732	Insidious — êîïèÿ.exe
2732	Insidious — êîïèÿ.exe
2732	Insidious — êîïèÿ.exe
2732	Insidious — êîïèÿ.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Insidious — êîïèÿ.exe

description pid process

Token: SeDebugPrivilege 2732 Insidious — êîïèÿ.exe

description	pid	process
Token: SeDebugPrivilege	2732	Insidious — êîïèÿ.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

description	pid	process	target process
PID 2092 wrote to memory of 2732	2092	48ad7db5fb10dd9b1c6817d5a9c34865.exe	Insidious — êîïèÿ.exe
PID 2092 wrote to memory of 2732	2092	48ad7db5fb10dd9b1c6817d5a9c34865.exe	Insidious — êîïèÿ.exe
PID 2092 wrote to memory of 2732	2092	48ad7db5fb10dd9b1c6817d5a9c34865.exe	Insidious — êîïèÿ.exe
PID 2092 wrote to memory of 2732	2092	48ad7db5fb10dd9b1c6817d5a9c34865.exe	Insidious — êîïèÿ.exe
PID 2092 wrote to memory of 2828	2092	48ad7db5fb10dd9b1c6817d5a9c34865.exe	12312.exe
PID 2092 wrote to memory of 2828	2092	48ad7db5fb10dd9b1c6817d5a9c34865.exe	12312.exe
PID 2092 wrote to memory of 2828	2092	48ad7db5fb10dd9b1c6817d5a9c34865.exe	12312.exe
PID 2092 wrote to memory of 2828	2092	48ad7db5fb10dd9b1c6817d5a9c34865.exe	12312.exe

C:\Users\Admin\AppData\Local\Temp\48ad7db5fb10dd9b1c6817d5a9c34865.exe
"C:\Users\Admin\AppData\Local\Temp\48ad7db5fb10dd9b1c6817d5a9c34865.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:2092

C:\Users\Admin\AppData\Local\Temp\Insidious — êîïèÿ.exe
"C:\Users\Admin\AppData\Local\Temp\Insidious — êîïèÿ.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\12312.exe
"C:\Users\Admin\AppData\Local\Temp\12312.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\44\Process.txt

Filesize
417B

MD5
1628276f506e23d574d6457b57240563

SHA1
eb637533e7eb315c56a825aa7dedf2ea2a70e062

SHA256
4f61a3271782d100f6a0bb5d6cedb2e6f2a3c766c648be358634f95863293cad

SHA512
4b8f5ab6115c044d3e0431f143b04dca058bd907525f3ee7df6beec880d638cb0e51e6a009ae330ad5ca6d694af9d951e03b05d3da03e414506f7d7f712b0aae

Download Submit
C:\Users\Admin\AppData\Local\Temp\Insidious — êîïèÿ.exe

Filesize
274KB

MD5
cc0f9ce3587d6a0ee7390ccf8567b764

SHA1
0d6b82a85b3ccf11a01482832fcb28e8f97ed68c

SHA256
7ce1e233b1994f4db7ded9540bc77f86608a8fed62ed9f58a36aedb9be3723b8

SHA512
b56fe5774b378c5dc6c73f9807e07062286b20077cf6a2ba4328d40ae597c0896dd97f955571893fad9e2e88eecd8fb7ffee84261caaee0171cd33e04452e160

Download Submit
\Users\Admin\AppData\Local\Temp\12312.exe

Filesize
60KB

MD5
f18cf2c76c5e8283a9d81640b198e01b

SHA1
29d2b98d71a263ee319cc65109e7325604d203d0

SHA256
b54d12aafa616be9524995f8df0527848776c08432556c178667e1429744e34d

SHA512
9543bd395281d41c7fafc470812bb920cbd70b918c864b3b245451a2b679ab621401c4857c8da000f952ae73e3c3f084aaaf74a15dc91966caf7680b84f1da04

Download Submit
memory/2092-7-0x0000000000950000-0x0000000000951000-memory.dmp

Filesize
4KB

Download
memory/2092-6-0x0000000000930000-0x0000000000931000-memory.dmp

Filesize
4KB

Download
memory/2092-5-0x0000000000940000-0x0000000000941000-memory.dmp

Filesize
4KB

Download
memory/2092-0-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/2092-4-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2092-3-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/2092-18-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/2092-1-0x0000000077BC0000-0x0000000077BC2000-memory.dmp

Filesize
8KB

Download
memory/2732-20-0x0000000001080000-0x00000000010CA000-memory.dmp

Filesize
296KB

Download
memory/2732-21-0x000007FEF5C20000-0x000007FEF660C000-memory.dmp

Filesize
9.9MB

Download
memory/2732-22-0x0000000000D00000-0x0000000000D80000-memory.dmp

Filesize
512KB

Download
memory/2732-73-0x000007FEF5C20000-0x000007FEF660C000-memory.dmp

Filesize
9.9MB

Download