44caliber | d5c05da57fa20048e35e6ef498b3dd0bcb92eaea3997e8a7009b38b8a15c4e86

Analysis

max time kernel
143s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
23-09-2023 18:46

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General

Target

Yandex.exe
Size

274KB
MD5

40e3881d6c0898f6a5c24940b54a69a2
SHA1

f3da392ee4fb703255eff7ee8a83f23c2bb02987
SHA256

d5c05da57fa20048e35e6ef498b3dd0bcb92eaea3997e8a7009b38b8a15c4e86
SHA512

9013a696cda9be776f0a5ee66aece8716662121e69c5be056c8567eabed8fea91641e50714962438efb57da1b1ff1d4a2c3211e65be10a9e7833e647f700eb8b
SSDEEP

6144:ef+BLtABPDMtBBfn1Y0gIoHOQZafTy8lI1D0Cbg:1tVvgIoHO+x1DRg

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1155120137612034188/cdy5wHbWmzOOyiX6nZbn5OlBuBidB8er7f1281hl7JRUP1iVFGnh9s57SwGqJtsdtgrx

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

6 freegeoip.app
8 freegeoip.app

flow	ioc
6	freegeoip.app
8	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:

Yandex.exe

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Yandex.exe

pid process

3144 Yandex.exe
3144 Yandex.exe
3144 Yandex.exe
3144 Yandex.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Yandex.exe

description pid process

Token: SeDebugPrivilege 3144 Yandex.exe

pid	process
3144	Yandex.exe
3144	Yandex.exe
3144	Yandex.exe
3144	Yandex.exe

description	pid	process
Token: SeDebugPrivilege	3144	Yandex.exe

C:\Users\Admin\AppData\Local\Temp\Yandex.exe
"C:\Users\Admin\AppData\Local\Temp\Yandex.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
1KB

MD5
94baec189cb853a2834d13b64671b6b0

SHA1
69be7fb635281e0850e66c7a2284522e9117a234

SHA256
a281ee2e535990ab433de60d6573ff51939309b06be216c5047e4c1f3647f575

SHA512
0d116fe3b2a0fa5b54f0565deb5674ad06d0c51a08c8238dfe35c685842af9c3c411495e6e9805c885fb979bf3c97365b567c752e28ba2c966cd815679f67fd2

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

Filesize
1KB

MD5
94baec189cb853a2834d13b64671b6b0

SHA1
69be7fb635281e0850e66c7a2284522e9117a234

SHA256
a281ee2e535990ab433de60d6573ff51939309b06be216c5047e4c1f3647f575

SHA512
0d116fe3b2a0fa5b54f0565deb5674ad06d0c51a08c8238dfe35c685842af9c3c411495e6e9805c885fb979bf3c97365b567c752e28ba2c966cd815679f67fd2

Download Submit
memory/3144-0-0x0000016DA57A0000-0x0000016DA57EA000-memory.dmp

Filesize
296KB

Download
memory/3144-6-0x00007FFC644A0000-0x00007FFC64F61000-memory.dmp

Filesize
10.8MB

Download
memory/3144-24-0x0000016DBFE80000-0x0000016DBFE90000-memory.dmp

Filesize
64KB

Download
memory/3144-121-0x00007FFC644A0000-0x00007FFC64F61000-memory.dmp

Filesize
10.8MB

Download