stealc | 2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2

General

Target

2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe
Size

1.8MB
MD5

e32e58ceac06cb2a19b34aa8e4d758fa
SHA1

96de9b6c74226a74bbb4cf414bc30118e080a17a
SHA256

2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2
SHA512

af0859d4c293cc97541f42cf325b4b19145036ec515eb19c76e2c27cf761ec9e3f69ef23804d9cf6d12263f01ad6820d8b86a097721cbc9b80e9a6b5dba000d5
SSDEEP

24576:FBfuZfeq6sJO6hTdtTF+TxMoxQH1Tj4wtjYZH1DmoYYzi3WH45yv+OueSJhm9e:F7qFTJtTF+TxMoxc1TU+j+dAzGwlrh

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 8 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/4628-1-0x0000000004020000-0x0000000004169000-memory.dmp	family_vidar_v7
behavioral1/memory/3556-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3556-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3556-9-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3556-19-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3556-20-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3556-37-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/3556-38-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

kat2E72.tmp

pid process

3556 kat2E72.tmp
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
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

pid	process
3556	kat2E72.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe

description	pid	process	target process
PID 4628 set thread context of 3556	4628	2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe	kat2E72.tmp

Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.

Query Registry
T1012

System Information Discovery
T1082

Processes:

kat2E72.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat2E72.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

kat2E72.tmp

pid process

3556 kat2E72.tmp
3556 kat2E72.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat2E72.tmp

pid	process
3556	kat2E72.tmp
3556	kat2E72.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe

description	pid	process	target process
PID 4628 wrote to memory of 3556	4628	2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe	kat2E72.tmp
PID 4628 wrote to memory of 3556	4628	2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe	kat2E72.tmp
PID 4628 wrote to memory of 3556	4628	2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe	kat2E72.tmp
PID 4628 wrote to memory of 3556	4628	2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe	kat2E72.tmp
PID 4628 wrote to memory of 3556	4628	2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe	kat2E72.tmp
PID 4628 wrote to memory of 3556	4628	2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe	kat2E72.tmp
PID 4628 wrote to memory of 3556	4628	2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe	kat2E72.tmp
PID 4628 wrote to memory of 3556	4628	2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe	kat2E72.tmp

C:\Users\Admin\AppData\Local\Temp\2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe
"C:\Users\Admin\AppData\Local\Temp\2f5c9195bdae334a58000ec35d3551f6f20ca56d203f5a916d75131ea30953e2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4628

C:\Users\Admin\AppData\Local\Temp\kat2E72.tmp
C:\Users\Admin\AppData\Local\Temp\kat2E72.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3556

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\kat2E72.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/3556-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3556-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3556-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3556-19-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3556-20-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3556-22-0x000000001B7A0000-0x000000001B9FF000-memory.dmp

Filesize
2.4MB

Download
memory/3556-37-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3556-38-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/4628-0-0x0000000000760000-0x0000000000761000-memory.dmp

Filesize
4KB

Download
memory/4628-1-0x0000000004020000-0x0000000004169000-memory.dmp

Filesize
1.3MB

Download
memory/4628-10-0x0000000000400000-0x00000000005D1000-memory.dmp

Filesize
1.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads