stealc | 70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4

General

Target

70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe
Size

2.1MB
MD5

fdaefb75abfe2ee10097cb3754c2a93b
SHA1

f531860142458b949f57069fdcc5c3936fa45e2a
SHA256

70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4
SHA512

459b27842e64c1c4c63e8970cab961876e69e1d4db4c03982802a69e6e26b9801892da038d869822fa15bbf6a166999510a96b7412bd9418642ab0c9bd3853f8
SSDEEP

49152:N6uDuaS9refmIJtTF+TxMoxc1TU+j+dAzGwlrh:N6uKb9jItIuoITsdZ

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/1476-1-0x0000000004190000-0x00000000042D9000-memory.dmp	family_vidar_v7
behavioral1/memory/1236-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1236-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1236-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1236-14-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1236-15-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1236-32-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1236-33-0x0000000000400000-0x0000000000646000-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:

katBAA5.tmp

pid process

1236 katBAA5.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
1236	katBAA5.tmp

Suspicious use of SetThreadContext 1 IoCs

Processes:

70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe

description	pid	process	target process
PID 1476 set thread context of 1236	1476	70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe	katBAA5.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:

katBAA5.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString katBAA5.tmp
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

katBAA5.tmp

pid process

1236 katBAA5.tmp
1236 katBAA5.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	katBAA5.tmp

pid	process
1236	katBAA5.tmp
1236	katBAA5.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe

description	pid	process	target process
PID 1476 wrote to memory of 1236	1476	70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe	katBAA5.tmp
PID 1476 wrote to memory of 1236	1476	70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe	katBAA5.tmp
PID 1476 wrote to memory of 1236	1476	70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe	katBAA5.tmp
PID 1476 wrote to memory of 1236	1476	70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe	katBAA5.tmp
PID 1476 wrote to memory of 1236	1476	70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe	katBAA5.tmp
PID 1476 wrote to memory of 1236	1476	70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe	katBAA5.tmp
PID 1476 wrote to memory of 1236	1476	70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe	katBAA5.tmp
PID 1476 wrote to memory of 1236	1476	70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe	katBAA5.tmp

C:\Users\Admin\AppData\Local\Temp\70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe
"C:\Users\Admin\AppData\Local\Temp\70a27192aba61792e947a2d97d836c966932f94b9dd410c03603bb6f1b29dfc4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1476

C:\Users\Admin\AppData\Local\Temp\katBAA5.tmp
C:\Users\Admin\AppData\Local\Temp\katBAA5.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1236

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4068 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
1⤵
PID:4612

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\katBAA5.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1236-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1236-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1236-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1236-14-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1236-15-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1236-17-0x000000001B840000-0x000000001BA9F000-memory.dmp

Filesize
2.4MB

Download
memory/1236-32-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1236-33-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1476-0-0x00000000024C0000-0x00000000024C1000-memory.dmp

Filesize
4KB

Download
memory/1476-1-0x0000000004190000-0x00000000042D9000-memory.dmp

Filesize
1.3MB

Download
memory/1476-9-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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