44caliber | 44cf30bb3e4623c4374ab4132bd419d3a63f119b36eaf66f1a5258e36df3b60a

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
07-01-2024 10:02

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	48ad7db5fb10dd9b1c6817d5a9c34865.exe

Executes dropped EXE 2 IoCs

Processes:

Insidious — êîïèÿ.exe12312.exe

pid process

4624 Insidious — êîïèÿ.exe
2808 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-1-5-21-3791175113-1062217823-1177695025-1000\Software\Wine 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
4624	Insidious — êîïèÿ.exe
2808	12312.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\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

14 freegeoip.app
18 freegeoip.app
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

pid process

4976 48ad7db5fb10dd9b1c6817d5a9c34865.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
14	freegeoip.app
18	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 8 IoCs

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exeInsidious — êîïèÿ.exe12312.exe

pid	process
4976	48ad7db5fb10dd9b1c6817d5a9c34865.exe
4976	48ad7db5fb10dd9b1c6817d5a9c34865.exe
4624	Insidious — êîïèÿ.exe
4624	Insidious — êîïèÿ.exe
4624	Insidious — êîïèÿ.exe
2808	12312.exe
2808	12312.exe
4624	Insidious — êîïèÿ.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Insidious — êîïèÿ.exe

description pid process

Token: SeDebugPrivilege 4624 Insidious — êîïèÿ.exe

description	pid	process
Token: SeDebugPrivilege	4624	Insidious — êîïèÿ.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

description	pid	process	target process
PID 4976 wrote to memory of 4624	4976	48ad7db5fb10dd9b1c6817d5a9c34865.exe	Insidious — êîïèÿ.exe
PID 4976 wrote to memory of 4624	4976	48ad7db5fb10dd9b1c6817d5a9c34865.exe	Insidious — êîïèÿ.exe
PID 4976 wrote to memory of 2808	4976	48ad7db5fb10dd9b1c6817d5a9c34865.exe	12312.exe
PID 4976 wrote to memory of 2808	4976	48ad7db5fb10dd9b1c6817d5a9c34865.exe	12312.exe
PID 4976 wrote to memory of 2808	4976	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
- Checks computer location settings
- Identifies Wine through registry keys
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4976

C:\Users\Admin\AppData\Local\Temp\12312.exe
"C:\Users\Admin\AppData\Local\Temp\12312.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2808

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:4624

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\12312.exe
Filesize
60KB

MD5
f18cf2c76c5e8283a9d81640b198e01b

SHA1
29d2b98d71a263ee319cc65109e7325604d203d0

SHA256
b54d12aafa616be9524995f8df0527848776c08432556c178667e1429744e34d

SHA512
9543bd395281d41c7fafc470812bb920cbd70b918c864b3b245451a2b679ab621401c4857c8da000f952ae73e3c3f084aaaf74a15dc91966caf7680b84f1da04

Download Submit
C:\Users\Admin\AppData\Local\Temp\Insidious — êîïèÿ.exe
Filesize
274KB

MD5
cc0f9ce3587d6a0ee7390ccf8567b764

SHA1
0d6b82a85b3ccf11a01482832fcb28e8f97ed68c

SHA256
7ce1e233b1994f4db7ded9540bc77f86608a8fed62ed9f58a36aedb9be3723b8

SHA512
b56fe5774b378c5dc6c73f9807e07062286b20077cf6a2ba4328d40ae597c0896dd97f955571893fad9e2e88eecd8fb7ffee84261caaee0171cd33e04452e160

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt
Filesize
1013B

MD5
21f2494811ad8090d37728f655b2ac83

SHA1
c0a7fb5b68e96b01057cf271e7c773335a6563b4

SHA256
219275ecde00dd7361331f4ee87531cbb8bf0c7b961ad18c3bfcfc06b05ae94d

SHA512
f7b604b97f9bc226b2f89541900f80872125d014707a92afb5996f591ba65631661ef46541ff4433e855466d419b0a2e5d33ad61dd021840edeb1cbf634f75d1

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt
Filesize
1KB

MD5
b8d5d191df018ff40db08abace90b4c8

SHA1
65e3ac38167a4d624c59c2f385398ebcdd73c160

SHA256
c65ead65ee35edd71773c2d110a5fc2c761bbe469913e0be71ce383e6b0662f7

SHA512
08850f90e8f69e9e10460054eb1f5fa5bb59f28bc0bf8805acfc73dfefd0aa9f3e4a1c12cd4b16b81746ff6672d74c37961fb6c081ab1ff45b9289ff29176d2f

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt
Filesize
1KB

MD5
6fee405d6806fb462c7427b362695935

SHA1
65191f338fec4d6dabb6195524daf29f61a2d137

SHA256
4ee9ab9ad765ece3fd26f92fd2be5fe50f7f0b61ad9909d830441c566193fcad

SHA512
e45c02c8826b4321d081a93b654e0e33a446bada3156a1162e0f3e389e2037d0636dd91348e5a7a4fdd075e866fe7c5bbef6c1b6867560f0b7e67aae62a96233

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt
Filesize
465B

MD5
5d1051b2c74ce3ef4abbc8e6d99fdcef

SHA1
d21ccb43418123147058fda7756593553c3cf2dd

SHA256
ed7b9c9493e8f75e19c5f4c3662eb11f02c8a8d0839b1b2c8bba26e85c473020

SHA512
2b4ce7c15040c79798a29be883315e5e3a28d98d5d8171565987a301fd1731ae859c2b49c0fdd1bc80f0ba3a6dafb9bc4c6f98b6363de7416d61a14bbd57c88b

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt
Filesize
681B

MD5
d5635f034b677b820e923a72a88444fa

SHA1
c204e0d72afe36cf930410d7f6842e5a9e14bfaa

SHA256
b19345dcf40604c47849056860e26eecb0321c6e1a6a97e2d90ff62578cd69fe

SHA512
98ea0f93a4a0b7a5e926e85faed6f980a3745abab265c33cf5dc84653bdbe2d16f7140ac555ac0f11fc75ac6f2535bf239e2942b461d8147b1d878b6a4fde6bd

Download Submit
memory/4624-26-0x00007FFEC0AD0000-0x00007FFEC1591000-memory.dmp

Filesize
10.8MB

Download
memory/4624-50-0x00000000008E0000-0x00000000008F0000-memory.dmp

Filesize
64KB

Download
memory/4624-21-0x00000000000E0000-0x000000000012A000-memory.dmp

Filesize
296KB

Download
memory/4624-151-0x00007FFEC0AD0000-0x00007FFEC1591000-memory.dmp

Filesize
10.8MB

Download
memory/4976-0-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/4976-25-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/4976-3-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/4976-4-0x0000000002C40000-0x0000000002C41000-memory.dmp

Filesize
4KB

Download
memory/4976-5-0x0000000002C50000-0x0000000002C51000-memory.dmp

Filesize
4KB

Download
memory/4976-1-0x00000000774F4000-0x00000000774F6000-memory.dmp

Filesize
8KB

Download