stealc | 7228fcec0d053ae3cdc9aacc192c2dccf3c159211a44eb390608c586f013c65c

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
08/07/2024, 12:46

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General

Target

file.exe
Size

4.0MB
MD5

3d8c6425d1a2106f055331464e86c44c
SHA1

5d511d67ab61ee5e3d57c05846979f2a4d4ae2dd
SHA256

7228fcec0d053ae3cdc9aacc192c2dccf3c159211a44eb390608c586f013c65c
SHA512

95b15bea9bb0ae90c90fe6659666bbcf59f2cb17fbf9de7ca348eb0f54706a839cf882c6de365ac45e0861f7677d1b79d88439e7c5f90359c6830828f8ae5fe6
SSDEEP

98304:ed0I3rg8oRURlZ3uxd+lBb0v681D5/NP:ed0I3rgfkL35/k683/9

Score

10^/10

stealc vidar spyware stealer

Malware Config

Extracted

Family

vidar

https://t.me/bu77un

https://steamcommunity.com/profiles/76561199730044335

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.1) Gecko/20100101 Firefox/128.1

Signatures

Detect Vidar Stealer 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/2752-78-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2752-526-0x0000000000400000-0x0000000000648000-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

description	pid	Process	procid_target
PID 1948 set thread context of 2752	1948	file.exe	31

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

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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1900	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2752	MSBuild.exe
2752	MSBuild.exe
2752	MSBuild.exe
2752	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1948	file.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 2752	1948	file.exe	31
PID 1948 wrote to memory of 2752	1948	file.exe	31
PID 1948 wrote to memory of 2752	1948	file.exe	31
PID 1948 wrote to memory of 2752	1948	file.exe	31
PID 1948 wrote to memory of 2752	1948	file.exe	31
PID 1948 wrote to memory of 2752	1948	file.exe	31
PID 1948 wrote to memory of 2752	1948	file.exe	31
PID 1948 wrote to memory of 2752	1948	file.exe	31
PID 1948 wrote to memory of 2752	1948	file.exe	31
PID 1948 wrote to memory of 2752	1948	file.exe	31
PID 2752 wrote to memory of 1268	2752	MSBuild.exe	34
PID 2752 wrote to memory of 1268	2752	MSBuild.exe	34
PID 2752 wrote to memory of 1268	2752	MSBuild.exe	34
PID 2752 wrote to memory of 1268	2752	MSBuild.exe	34
PID 1268 wrote to memory of 1900	1268	cmd.exe	36
PID 1268 wrote to memory of 1900	1268	cmd.exe	36
PID 1268 wrote to memory of 1900	1268	cmd.exe	36
PID 1268 wrote to memory of 1900	1268	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1948
- 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:2752
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\JECBGCFHCFID" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1268
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:1900

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\Local\Temp\CabFE10.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarFE61.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/1948-37-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-3-0x00000000050E0000-0x0000000005284000-memory.dmp

Filesize
1.6MB

Download
memory/1948-4-0x0000000005650000-0x00000000057A8000-memory.dmp

Filesize
1.3MB

Download
memory/1948-5-0x0000000000B50000-0x0000000000B6C000-memory.dmp

Filesize
112KB

Download
memory/1948-6-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-33-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-65-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-63-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-61-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-59-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-57-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-55-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-53-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-51-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-49-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-47-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-45-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-43-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-41-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-39-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-31-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-0-0x0000000073D0E000-0x0000000073D0F000-memory.dmp

Filesize
4KB

Download
memory/1948-35-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-29-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-27-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-25-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-23-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-21-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-19-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-17-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-15-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-13-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-11-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-9-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-7-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/1948-1-0x0000000000EB0000-0x00000000012AE000-memory.dmp

Filesize
4.0MB

Download
memory/1948-2-0x0000000073D00000-0x00000000743EE000-memory.dmp

Filesize
6.9MB

Download
memory/1948-79-0x0000000073D00000-0x00000000743EE000-memory.dmp

Filesize
6.9MB

Download
memory/1948-69-0x0000000073D00000-0x00000000743EE000-memory.dmp

Filesize
6.9MB

Download
memory/2752-66-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2752-78-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2752-68-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2752-71-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2752-526-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download