coldstealer | 5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f

Analysis

max time kernel
79s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
31-07-2022 10:55

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General

Target

5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f.exe
Size

677KB
MD5

fd4bcc51f6325388f8d2e6c3f6b32cee
SHA1

99f99a4b5655d01789e9ebe97effc7b64369c641
SHA256

5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f
SHA512

c7a8577cc54c05227768f079648414819673cbefb7d2824724683a702febb476ac38270f4ac4c98d5639fa789697e9738ef6e98487774b594d114bdecb3309e3

Score

10^/10

coldstealer discovery spyware stealer

Malware Config

Signatures

Cold Stealer
An info stealer written in C#, first seen in Feb 2022.
stealer coldstealer
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
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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:

5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f.exe

pid process

4140 5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f.exe

description pid process

Token: SeDebugPrivilege 4140 5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f.exe

pid	process
4140	5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f.exe

description	pid	process
Token: SeDebugPrivilege	4140	5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f.exe

C:\Users\Admin\AppData\Local\Temp\5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f.exe
"C:\Users\Admin\AppData\Local\Temp\5f9484bd0136da270398279a49369490fbb2ba4fa92e73126b60b75148da407f.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4140

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/4140-130-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/4140-131-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/4140-132-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/4140-133-0x0000000002690000-0x00000000026BA000-memory.dmp

Filesize
168KB

Download
memory/4140-139-0x00000000026F0000-0x0000000002729000-memory.dmp

Filesize
228KB

Download
memory/4140-140-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/4140-141-0x0000000002770000-0x00000000027C0000-memory.dmp

Filesize
320KB

Download
memory/4140-142-0x0000000002DB0000-0x0000000002E4C000-memory.dmp

Filesize
624KB

Download
memory/4140-143-0x0000000005370000-0x0000000005914000-memory.dmp

Filesize
5.6MB

Download
memory/4140-144-0x0000000002E90000-0x0000000002F22000-memory.dmp

Filesize
584KB

Download
memory/4140-145-0x0000000005920000-0x0000000005986000-memory.dmp

Filesize
408KB

Download