stealc | e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829

Analysis

max time kernel
122s
max time network
126s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
17-06-2024 05:11

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General

Target

e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe
Size

4.2MB
MD5

8cfe70cf4f35c7f9b4ddba327d44c1f8
SHA1

4fd044d2fee22138668153a7472b34e0b9a99c06
SHA256

e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829
SHA512

aec1486ae4e64e8ca59baaf7a623fc4c6b56a3b3bcb6e46cadf82350799edfc62ede7bdb54fcbce490c5506e39f1dc778be160c130edcb6784667a448dafc811
SSDEEP

49152:Yg0GkQNDv4gz+LzRdo/msRu92zAPZHPPumf7BQOyCEJ7eAPDbn5m0IcQgZV0Cego:yLNdo/TRuMyfPyCk7eIZIcQ0Ogo

Score

10^/10

stealc vidar spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

https://t.me/memve4erin

https://steamcommunity.com/profiles/76561199699680841

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

Detect Vidar Stealer 3 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/2608-80-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2608-464-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2608-575-0x0000000000400000-0x0000000000648000-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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

Processes:

e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe

description	pid	process	target process
PID 2268 set thread context of 2608	2268	e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe	MSBuild.exe

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:

MSBuild.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString MSBuild.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2556 timeout.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

MSBuild.exe

pid process

2608 MSBuild.exe
2608 MSBuild.exe
2608 MSBuild.exe
2608 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe

description pid process

Token: SeDebugPrivilege 2268 e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe

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

pid	process
2556	timeout.exe

pid	process
2608	MSBuild.exe
2608	MSBuild.exe
2608	MSBuild.exe
2608	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	2268	e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exeMSBuild.execmd.exe

description	pid	process	target process
PID 2268 wrote to memory of 2608	2268	e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe	MSBuild.exe
PID 2268 wrote to memory of 2608	2268	e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe	MSBuild.exe
PID 2268 wrote to memory of 2608	2268	e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe	MSBuild.exe
PID 2268 wrote to memory of 2608	2268	e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe	MSBuild.exe
PID 2268 wrote to memory of 2608	2268	e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe	MSBuild.exe
PID 2268 wrote to memory of 2608	2268	e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe	MSBuild.exe
PID 2268 wrote to memory of 2608	2268	e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe	MSBuild.exe
PID 2268 wrote to memory of 2608	2268	e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe	MSBuild.exe
PID 2268 wrote to memory of 2608	2268	e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe	MSBuild.exe
PID 2268 wrote to memory of 2608	2268	e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe	MSBuild.exe
PID 2608 wrote to memory of 2952	2608	MSBuild.exe	cmd.exe
PID 2608 wrote to memory of 2952	2608	MSBuild.exe	cmd.exe
PID 2608 wrote to memory of 2952	2608	MSBuild.exe	cmd.exe
PID 2608 wrote to memory of 2952	2608	MSBuild.exe	cmd.exe
PID 2952 wrote to memory of 2556	2952	cmd.exe	timeout.exe
PID 2952 wrote to memory of 2556	2952	cmd.exe	timeout.exe
PID 2952 wrote to memory of 2556	2952	cmd.exe	timeout.exe
PID 2952 wrote to memory of 2556	2952	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe
"C:\Users\Admin\AppData\Local\Temp\e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2608
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\BKFBAECBAEGD" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2952
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:2556

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\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
e9fbca65683e4257b5de2af09242b9b5

SHA1
d1ad3bfb745cb90ea8c931743d0b2344d223de84

SHA256
eac06fa0f9caaa409befa41358fdfa7ae88628d0bfaac555e8adead626e5f2a0

SHA512
c21e0f176731c60b734b5c573b6d70e21283f0abddd307cacf78d9e3bba42d83f8f2eda55a68d0691676ea09c640ab1cb2316f3bf31da1829a34b6d22d3ae78f

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab8519.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar857A.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2268-18-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-52-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-5-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-34-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-64-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-62-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-60-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-58-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-56-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-54-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-48-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-46-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-45-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-42-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-41-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-81-0x0000000074E00000-0x00000000754EE000-memory.dmp

Filesize
6.9MB

Download
memory/2268-38-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-37-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-1-0x0000000000B10000-0x0000000000F50000-memory.dmp

Filesize
4.2MB

Download
memory/2268-2-0x0000000004C10000-0x0000000004CBA000-memory.dmp

Filesize
680KB

Download
memory/2268-3-0x0000000074E00000-0x00000000754EE000-memory.dmp

Filesize
6.9MB

Download
memory/2268-4-0x0000000000650000-0x000000000066C000-memory.dmp

Filesize
112KB

Download
memory/2268-65-0x0000000074E00000-0x00000000754EE000-memory.dmp

Filesize
6.9MB

Download
memory/2268-33-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-30-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-29-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-26-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-24-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-22-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-21-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-0-0x0000000074E0E000-0x0000000074E0F000-memory.dmp

Filesize
4KB

Download
memory/2268-16-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-14-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-12-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-10-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-8-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-6-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2268-51-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2608-464-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2608-68-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2608-66-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2608-80-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2608-575-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download