stealc | c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096

General

Target

c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe
Size

1.9MB
MD5

73b7ad7bee05f1171748e90d83a4d031
SHA1

db949d109e003a973952bd23fd45aea4bb1b8185
SHA256

c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096
SHA512

a869a5281adb28768a8e47cc906af1bd58d8c1dfd87b1a0cf19b0a2bd3be0b4405f10188b6f4f092008c9c346308d47668650fbfe591ddd5e6360d52e0c7c273
SSDEEP

49152:CdKfTn6vWJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnltIuoITsdZ

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Signatures

Detect Vidar Stealer 10 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/3368-1-0x0000000004020000-0x0000000004169000-memory.dmp	family_vidar_v7
behavioral1/memory/324-4-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/324-8-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/324-10-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/324-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/324-18-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/324-35-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/324-36-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/324-46-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/324-53-0x0000000000400000-0x0000000000646000-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:

katE8F8.tmp

pid process

324 katE8F8.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

Suspicious use of SetThreadContext 1 IoCs

Processes:

c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe

description	pid	process	target process
PID 3368 set thread context of 324	3368	c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe	katE8F8.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:

katE8F8.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString katE8F8.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	katE8F8.tmp

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

katE8F8.tmp

pid	process
324	katE8F8.tmp
324	katE8F8.tmp
324	katE8F8.tmp
324	katE8F8.tmp
324	katE8F8.tmp
324	katE8F8.tmp
324	katE8F8.tmp
324	katE8F8.tmp
324	katE8F8.tmp
324	katE8F8.tmp
324	katE8F8.tmp
324	katE8F8.tmp
324	katE8F8.tmp
324	katE8F8.tmp

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe

description	pid	process	target process
PID 3368 wrote to memory of 324	3368	c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe	katE8F8.tmp
PID 3368 wrote to memory of 324	3368	c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe	katE8F8.tmp
PID 3368 wrote to memory of 324	3368	c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe	katE8F8.tmp
PID 3368 wrote to memory of 324	3368	c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe	katE8F8.tmp
PID 3368 wrote to memory of 324	3368	c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe	katE8F8.tmp
PID 3368 wrote to memory of 324	3368	c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe	katE8F8.tmp
PID 3368 wrote to memory of 324	3368	c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe	katE8F8.tmp
PID 3368 wrote to memory of 324	3368	c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe	katE8F8.tmp

C:\Users\Admin\AppData\Local\Temp\c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe
"C:\Users\Admin\AppData\Local\Temp\c254ca647217876330f4c280ae2371c52f95eb4ef5246f7260ad0046b1098096.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3368

C:\Users\Admin\AppData\Local\Temp\katE8F8.tmp
C:\Users\Admin\AppData\Local\Temp\katE8F8.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:324

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 --field-trial-handle=1036,i,4686244434963378549,11462511444150484980,262144 --variations-seed-version --mojo-platform-channel-handle=4312 /prefetch:8
1⤵
PID:1244

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=3540,i,4686244434963378549,11462511444150484980,262144 --variations-seed-version --mojo-platform-channel-handle=3512 /prefetch:3
1⤵
PID:1620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports
Filesize
2B

MD5
d751713988987e9331980363e24189ce

SHA1
97d170e1550eee4afc0af065b78cda302a97674c

SHA256
4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

SHA512
b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries
Filesize
40B

MD5
20d4b8fa017a12a108c87f540836e250

SHA1
1ac617fac131262b6d3ce1f52f5907e31d5f6f00

SHA256
6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d

SHA512
507b2b8a8a168ff8f2bdafa5d9d341c44501a5f17d9f63f3d43bd586bc9e8ae33221887869fa86f845b7d067cb7d2a7009efd71dda36e03a40a74fee04b86856

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C:\Users\Admin\AppData\Local\Temp\katE8F8.tmp
Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/324-46-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/324-10-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/324-8-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/324-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/324-18-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/324-20-0x000000001B790000-0x000000001B9EF000-memory.dmp

Filesize
2.4MB

Download
memory/324-35-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/324-36-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/324-4-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/324-53-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/3368-9-0x0000000000400000-0x00000000005EC000-memory.dmp

Filesize
1.9MB

Download
memory/3368-0-0x0000000002240000-0x0000000002241000-memory.dmp

Filesize
4KB

Download
memory/3368-1-0x0000000004020000-0x0000000004169000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads