stealc | 207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342

Analysis

max time kernel
148s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
25/06/2024, 14:48

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General

Target

207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe
Size

4.4MB
MD5

4a8099ca44ad78fa5414bab4f54ba030
SHA1

ad1e9ee328d7eb870ebdaf9cf592a183f838f459
SHA256

207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342
SHA512

b1f905210d372c8352c07ea6c27bd71f12f7ee3a1e40375925bc6cb295b08d07d5bd9407e4da6e7d303a0951fb19e060a652951bfdf67f1151f19720e8698d03
SSDEEP

49152:0fhvX07qcsIUv5z95W+diSQJAoCWFf4z6X5MS/tl3odglPCpgVS84OH:+hc7qcvWzE4OX53C+V5r

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

vidar

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

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 5 IoCs

stealer

resource	yara_rule
behavioral2/memory/4808-68-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4808-71-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4808-74-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4808-79-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral2/memory/4808-166-0x0000000000400000-0x0000000000648000-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

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral2/memory/4364-1-0x00000000005B0000-0x0000000000A16000-memory.dmp	net_reactor

Executes dropped EXE 2 IoCs

pid	Process
1972	JJJEGCGDGH.exe
908	KJKJJEGIDB.exe

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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

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 3 IoCs

description	pid	Process	procid_target
PID 4364 set thread context of 4808	4364	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	77
PID 1972 set thread context of 3192	1972	JJJEGCGDGH.exe	83
PID 908 set thread context of 2004	908	KJKJJEGIDB.exe	90

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4356	1972	WerFault.exe	79
3452	908	WerFault.exe	88

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
2696	timeout.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4808	MSBuild.exe
4808	MSBuild.exe
4808	MSBuild.exe
4808	MSBuild.exe
4808	MSBuild.exe
4808	MSBuild.exe
3192	RegAsm.exe
4808	MSBuild.exe
4808	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	4364	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe
Token: SeDebugPrivilege	3192	RegAsm.exe
Token: SeBackupPrivilege	3192	RegAsm.exe
Token: SeSecurityPrivilege	3192	RegAsm.exe
Token: SeSecurityPrivilege	3192	RegAsm.exe
Token: SeSecurityPrivilege	3192	RegAsm.exe
Token: SeSecurityPrivilege	3192	RegAsm.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 4364 wrote to memory of 4808	4364	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	77
PID 4364 wrote to memory of 4808	4364	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	77
PID 4364 wrote to memory of 4808	4364	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	77
PID 4364 wrote to memory of 4808	4364	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	77
PID 4364 wrote to memory of 4808	4364	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	77
PID 4364 wrote to memory of 4808	4364	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	77
PID 4364 wrote to memory of 4808	4364	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	77
PID 4364 wrote to memory of 4808	4364	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	77
PID 4364 wrote to memory of 4808	4364	207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe	77
PID 4808 wrote to memory of 1972	4808	MSBuild.exe	79
PID 4808 wrote to memory of 1972	4808	MSBuild.exe	79
PID 4808 wrote to memory of 1972	4808	MSBuild.exe	79
PID 1972 wrote to memory of 3192	1972	JJJEGCGDGH.exe	83
PID 1972 wrote to memory of 3192	1972	JJJEGCGDGH.exe	83
PID 1972 wrote to memory of 3192	1972	JJJEGCGDGH.exe	83
PID 1972 wrote to memory of 3192	1972	JJJEGCGDGH.exe	83
PID 1972 wrote to memory of 3192	1972	JJJEGCGDGH.exe	83
PID 1972 wrote to memory of 3192	1972	JJJEGCGDGH.exe	83
PID 1972 wrote to memory of 3192	1972	JJJEGCGDGH.exe	83
PID 1972 wrote to memory of 3192	1972	JJJEGCGDGH.exe	83
PID 4808 wrote to memory of 908	4808	MSBuild.exe	88
PID 4808 wrote to memory of 908	4808	MSBuild.exe	88
PID 4808 wrote to memory of 908	4808	MSBuild.exe	88
PID 908 wrote to memory of 2004	908	KJKJJEGIDB.exe	90
PID 908 wrote to memory of 2004	908	KJKJJEGIDB.exe	90
PID 908 wrote to memory of 2004	908	KJKJJEGIDB.exe	90
PID 908 wrote to memory of 2004	908	KJKJJEGIDB.exe	90
PID 908 wrote to memory of 2004	908	KJKJJEGIDB.exe	90
PID 908 wrote to memory of 2004	908	KJKJJEGIDB.exe	90
PID 908 wrote to memory of 2004	908	KJKJJEGIDB.exe	90
PID 908 wrote to memory of 2004	908	KJKJJEGIDB.exe	90
PID 908 wrote to memory of 2004	908	KJKJJEGIDB.exe	90
PID 908 wrote to memory of 2004	908	KJKJJEGIDB.exe	90
PID 4808 wrote to memory of 2908	4808	MSBuild.exe	93
PID 4808 wrote to memory of 2908	4808	MSBuild.exe	93
PID 4808 wrote to memory of 2908	4808	MSBuild.exe	93
PID 2908 wrote to memory of 2696	2908	cmd.exe	95
PID 2908 wrote to memory of 2696	2908	cmd.exe	95
PID 2908 wrote to memory of 2696	2908	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe
"C:\Users\Admin\AppData\Local\Temp\207fb4aeffd47811049fe5c6366f09f70b859c6987883dcd9244a915af91a342.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4364
- 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:4808
- - C:\ProgramData\JJJEGCGDGH.exe
    "C:\ProgramData\JJJEGCGDGH.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1972
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3192
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1972 -s 156
      4⤵
      Program crash
      PID:4356
- - C:\ProgramData\KJKJJEGIDB.exe
    "C:\ProgramData\KJKJJEGIDB.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:908
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      PID:2004
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 908 -s 316
      4⤵
      Program crash
      PID:3452
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\EGIDHDGCBFBK" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2908
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      Delays execution with timeout.exe
      PID:2696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1972 -ip 1972
1⤵
PID:2148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 908 -ip 908
1⤵
PID:2376

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:\ProgramData\JJJEGCGDGH.exe

Filesize
632KB

MD5
b60d8d01724703616e7cbbd320a9bd75

SHA1
16f170f595d6db225f1376315406bf10146d1743

SHA256
cc6d774ca5b7d8d89289ccace5a25c5c3db0b30c330c10f0233c1d0cb8c9e24c

SHA512
7560876438eb1401b542ff491e3d800b3ba06163ef62362f4e8a1e0bab26d809a24d045d396f2269648114c67ceb9dfec96f33f8b1491257b4240179345d0d00

Download Submit
C:\ProgramData\KJKJJEGIDB.exe

Filesize
1.8MB

MD5
c6c9f27d335d4e47b5ea12653e806be6

SHA1
e53242d463e2c94383ec646e7e04504b96b4d176

SHA256
514efbae5faa43878c743c3db36f81c25ab5d6da93b879b6e88e7a63b1b19769

SHA512
7e00bdac39c89821b776dda372693d29e0e7188f8ef747037b971461af79545908f8fc8c9bbf7a30f1b0cc4ceea45632e91c1093e784002994808c19bd2a7347

Download Submit
memory/1972-136-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/3192-157-0x00000000083E0000-0x00000000083F2000-memory.dmp

Filesize
72KB

Download
memory/3192-155-0x0000000008960000-0x0000000008F78000-memory.dmp

Filesize
6.1MB

Download
memory/3192-161-0x00000000091F0000-0x0000000009256000-memory.dmp

Filesize
408KB

Download
memory/3192-160-0x00000000085B0000-0x00000000085FC000-memory.dmp

Filesize
304KB

Download
memory/3192-158-0x0000000008440000-0x000000000847C000-memory.dmp

Filesize
240KB

Download
memory/3192-163-0x00000000094F0000-0x000000000950E000-memory.dmp

Filesize
120KB

Download
memory/3192-156-0x00000000084A0000-0x00000000085AA000-memory.dmp

Filesize
1.0MB

Download
memory/3192-162-0x0000000009520000-0x0000000009596000-memory.dmp

Filesize
472KB

Download
memory/3192-164-0x000000000AA40000-0x000000000AC02000-memory.dmp

Filesize
1.8MB

Download
memory/3192-140-0x00000000056A0000-0x00000000056AA000-memory.dmp

Filesize
40KB

Download
memory/3192-139-0x00000000056C0000-0x0000000005752000-memory.dmp

Filesize
584KB

Download
memory/3192-138-0x0000000005BD0000-0x0000000006176000-memory.dmp

Filesize
5.6MB

Download
memory/3192-137-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/3192-165-0x000000000B140000-0x000000000B66C000-memory.dmp

Filesize
5.2MB

Download
memory/4364-63-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-23-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-53-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-51-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-47-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-45-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-43-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-41-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-40-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-37-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-35-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-33-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-31-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-29-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-27-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-25-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-21-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-17-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-15-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-8-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-61-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-59-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-49-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-55-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-19-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-13-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-11-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-1-0x00000000005B0000-0x0000000000A16000-memory.dmp

Filesize
4.4MB

Download
memory/4364-57-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-0-0x000000007513E000-0x000000007513F000-memory.dmp

Filesize
4KB

Download
memory/4364-2-0x0000000005530000-0x00000000055CC000-memory.dmp

Filesize
624KB

Download
memory/4364-73-0x0000000075130000-0x00000000758E1000-memory.dmp

Filesize
7.7MB

Download
memory/4364-3-0x0000000005440000-0x000000000544A000-memory.dmp

Filesize
40KB

Download
memory/4364-72-0x0000000075130000-0x00000000758E1000-memory.dmp

Filesize
7.7MB

Download
memory/4364-4-0x0000000075130000-0x00000000758E1000-memory.dmp

Filesize
7.7MB

Download
memory/4364-65-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-67-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-9-0x00000000056A0000-0x00000000056B5000-memory.dmp

Filesize
84KB

Download
memory/4364-7-0x00000000056A0000-0x00000000056BC000-memory.dmp

Filesize
112KB

Download
memory/4364-6-0x0000000005480000-0x0000000005488000-memory.dmp

Filesize
32KB

Download
memory/4364-5-0x00000000055D0000-0x000000000569E000-memory.dmp

Filesize
824KB

Download
memory/4808-68-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4808-71-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4808-74-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4808-79-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/4808-166-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download