44caliber | 44cf30bb3e4623c4374ab4132bd419d3a63f119b36eaf66f1a5258e36df3b60a

Analysis

max time kernel
179s
max time network
196s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2023 01:18

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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

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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	48ad7db5fb10dd9b1c6817d5a9c34865.exe

Executes dropped EXE 2 IoCs

Processes:

Insidious — êîïèÿ.exe12312.exe

pid process

2996 Insidious — êîïèÿ.exe
3420 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-1-5-21-996941297-2279405024-2328152752-1000\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
2996	Insidious — êîïèÿ.exe
3420	12312.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\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

69 freegeoip.app
67 freegeoip.app
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

pid process

4784 48ad7db5fb10dd9b1c6817d5a9c34865.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
69	freegeoip.app
67	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
4784	48ad7db5fb10dd9b1c6817d5a9c34865.exe
4784	48ad7db5fb10dd9b1c6817d5a9c34865.exe
2996	Insidious — êîïèÿ.exe
2996	Insidious — êîïèÿ.exe
2996	Insidious — êîïèÿ.exe
3420	12312.exe
3420	12312.exe
2996	Insidious — êîïèÿ.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Insidious — êîïèÿ.exe

description pid process

Token: SeDebugPrivilege 2996 Insidious — êîïèÿ.exe

description	pid	process
Token: SeDebugPrivilege	2996	Insidious — êîïèÿ.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

48ad7db5fb10dd9b1c6817d5a9c34865.exe

description	pid	process	target process
PID 4784 wrote to memory of 2996	4784	48ad7db5fb10dd9b1c6817d5a9c34865.exe	Insidious — êîïèÿ.exe
PID 4784 wrote to memory of 2996	4784	48ad7db5fb10dd9b1c6817d5a9c34865.exe	Insidious — êîïèÿ.exe
PID 4784 wrote to memory of 3420	4784	48ad7db5fb10dd9b1c6817d5a9c34865.exe	12312.exe
PID 4784 wrote to memory of 3420	4784	48ad7db5fb10dd9b1c6817d5a9c34865.exe	12312.exe
PID 4784 wrote to memory of 3420	4784	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:4784

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:2996

C:\Users\Admin\AppData\Local\Temp\12312.exe
"C:\Users\Admin\AppData\Local\Temp\12312.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:3420

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

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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
715B

MD5
525c79cdc3ecb381a7b9d8e01a290a4d

SHA1
986d1d82843e118fef5b7dee9517f5b3a096c56d

SHA256
a18a65c775a45b94dce0f39595afa9ef11d6d1af31787127b934ba18a21cfc7a

SHA512
2ee1da333957ee3e698f958191e2227534b66e62b1509dd64caf6c847b62b96a933ec043f1f0fc6636907d9f3ea414daa7502719759026ede0df0e3ce0dbe480

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

MD5
076673cf6ef013bbf7133807c9a25063

SHA1
964805145eac8580dc97ab5a6678374ffe7a880b

SHA256
cbedca261f1e1f71aa7302ad12e74bb32f45e1d538a41769d823b53c6cf645a4

SHA512
31597cf5867eeaf804531d3a874b94c43276cc932c12edfa0ab11d0e7d6074d8d1f1dd86a39d1337c8fe05749ad06cd8b7faa3205ac2270d34f1c6fecce8fc3a

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt
Filesize
405B

MD5
e440b7afdd3bdd0710b2a2e1c56319f6

SHA1
e620d95abb969c9cc124edb28f7058fd9927bfd5

SHA256
12693a6aee70c6ffeb75369695732f3fb21d5bbcf7403dba9fcad77a5ed49808

SHA512
c6fb4fcc92348a5c0eb2423d8a5f975de7bba806571bd6f9de4bdc56dfd603f385a45682be707d6a7c9ddb8f9486e2b8d62de7aaf4d9c3643d06d5de11f437b8

Download Submit
memory/2996-21-0x0000000000670000-0x00000000006BA000-memory.dmp

Filesize
296KB

Download
memory/2996-153-0x00007FF8D0630000-0x00007FF8D10F1000-memory.dmp

Filesize
10.8MB

Download
memory/2996-58-0x000000001B3A0000-0x000000001B3B0000-memory.dmp

Filesize
64KB

Download
memory/2996-57-0x00007FF8D0630000-0x00007FF8D10F1000-memory.dmp

Filesize
10.8MB

Download
memory/4784-6-0x0000000002B10000-0x0000000002B11000-memory.dmp

Filesize
4KB

Download
memory/4784-20-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/4784-27-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/4784-5-0x0000000002B00000-0x0000000002B01000-memory.dmp

Filesize
4KB

Download
memory/4784-0-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/4784-4-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/4784-2-0x0000000000400000-0x000000000092D000-memory.dmp

Filesize
5.2MB

Download
memory/4784-1-0x0000000076F44000-0x0000000076F46000-memory.dmp

Filesize
8KB

Download