stealc | a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7

Analysis

max time kernel
118s
max time network
159s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 05:06

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General

Target

a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe
Size

4.3MB
MD5

67cef2b94174d0883a8e8b9ad9c217c7
SHA1

d674a6454b03d5190ea685112e68a6604eabfc39
SHA256

a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7
SHA512

bd335514641c23f96063c92783bcc2e607c7765705aafa2e742b631c102c08704b1bc77ba61dce7f2267abd5e0e4a30653a50179f86689ecf348f5eb0057ea3c
SSDEEP

49152:WgMCMqzvDxEHJKquC8nlPCx0jdt8not+bgZV014po/8QNT9Fr1:wGdlbInoM0bBO5H

Score

10^/10

stealc vidar 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 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/2684-80-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2684-606-0x0000000000400000-0x0000000000648000-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
Executes dropped EXE 1 IoCs

Processes:

BFHIJEBKEB.exe

pid process

2492 BFHIJEBKEB.exe
Loads dropped DLL 7 IoCs

Processes:

MSBuild.exeWerFault.exe

pid process

2684 MSBuild.exe
2684 MSBuild.exe
2684 MSBuild.exe
2684 MSBuild.exe
2104 WerFault.exe
2104 WerFault.exe
2104 WerFault.exe
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:

a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe

description pid process target process

PID 2976 set thread context of 2684 2976 a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe MSBuild.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2104 2492 WerFault.exe BFHIJEBKEB.exe

pid	process
2492	BFHIJEBKEB.exe

pid	process
2684	MSBuild.exe
2684	MSBuild.exe
2684	MSBuild.exe
2684	MSBuild.exe
2104	WerFault.exe
2104	WerFault.exe
2104	WerFault.exe

description	pid	process	target process
PID 2976 set thread context of 2684	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe

pid	pid_target	process	target process
2104	2492	WerFault.exe	BFHIJEBKEB.exe

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

Processes:

MSBuild.exe

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

Processes:

timeout.exe

pid process

1972 timeout.exe

pid	process
1972	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exeMSBuild.exe

pid	process
2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe
2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe
2684	MSBuild.exe
2684	MSBuild.exe
2684	MSBuild.exe
2684	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe

description pid process

Token: SeDebugPrivilege 2976 a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe

description	pid	process
Token: SeDebugPrivilege	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exeMSBuild.exeBFHIJEBKEB.execmd.exe

description	pid	process	target process
PID 2976 wrote to memory of 2656	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2976 wrote to memory of 2656	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2976 wrote to memory of 2656	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2976 wrote to memory of 2656	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2976 wrote to memory of 2684	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2976 wrote to memory of 2684	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2976 wrote to memory of 2684	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2976 wrote to memory of 2684	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2976 wrote to memory of 2684	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2976 wrote to memory of 2684	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2976 wrote to memory of 2684	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2976 wrote to memory of 2684	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2976 wrote to memory of 2684	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2976 wrote to memory of 2684	2976	a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe	MSBuild.exe
PID 2684 wrote to memory of 2492	2684	MSBuild.exe	BFHIJEBKEB.exe
PID 2684 wrote to memory of 2492	2684	MSBuild.exe	BFHIJEBKEB.exe
PID 2684 wrote to memory of 2492	2684	MSBuild.exe	BFHIJEBKEB.exe
PID 2684 wrote to memory of 2492	2684	MSBuild.exe	BFHIJEBKEB.exe
PID 2492 wrote to memory of 2104	2492	BFHIJEBKEB.exe	WerFault.exe
PID 2492 wrote to memory of 2104	2492	BFHIJEBKEB.exe	WerFault.exe
PID 2492 wrote to memory of 2104	2492	BFHIJEBKEB.exe	WerFault.exe
PID 2492 wrote to memory of 2104	2492	BFHIJEBKEB.exe	WerFault.exe
PID 2684 wrote to memory of 3060	2684	MSBuild.exe	cmd.exe
PID 2684 wrote to memory of 3060	2684	MSBuild.exe	cmd.exe
PID 2684 wrote to memory of 3060	2684	MSBuild.exe	cmd.exe
PID 2684 wrote to memory of 3060	2684	MSBuild.exe	cmd.exe
PID 3060 wrote to memory of 1972	3060	cmd.exe	timeout.exe
PID 3060 wrote to memory of 1972	3060	cmd.exe	timeout.exe
PID 3060 wrote to memory of 1972	3060	cmd.exe	timeout.exe
PID 3060 wrote to memory of 1972	3060	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe
"C:\Users\Admin\AppData\Local\Temp\a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2976

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
PID:2656

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2684

C:\ProgramData\BFHIJEBKEB.exe
"C:\ProgramData\BFHIJEBKEB.exe"
3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2492 -s 96
4⤵
- Loads dropped DLL
- Program crash
PID:2104

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\IJEGHJECFCFC" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:3060

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:1972

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar156B.tmp
Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
\ProgramData\BFHIJEBKEB.exe
Filesize
516KB

MD5
0309dd0131150796ea99b30a62194fae

SHA1
2df6e334708eae810a74b844fd57e18e9fdc34cd

SHA256
07c09ba5a84f619e5b83a54298ffc58d20b00f14399c7a94b7f02b70efc60f35

SHA512
3d4e5a0718d04fee92d8040880b631107d1e23a6b3bce430d58769179af999c28b99e50c5cd45f283339f7bbb24ffacbf601a5447edb12e28da4517fbfa282e8

Download Submit
memory/2684-67-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2684-606-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2684-80-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2684-70-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2976-63-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-39-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-13-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-65-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-0-0x00000000741BE000-0x00000000741BF000-memory.dmp

Filesize
4KB

Download
memory/2976-61-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-59-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-57-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-55-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-53-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-51-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-49-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-47-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-66-0x00000000741B0000-0x000000007489E000-memory.dmp

Filesize
6.9MB

Download
memory/2976-7-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-6-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-45-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-43-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-41-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-9-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-37-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-35-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-5-0x0000000000A30000-0x0000000000A4C000-memory.dmp

Filesize
112KB

Download
memory/2976-33-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-31-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-29-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-27-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-25-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-23-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-21-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-19-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-17-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-15-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-11-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/2976-81-0x00000000741B0000-0x000000007489E000-memory.dmp

Filesize
6.9MB

Download
memory/2976-4-0x0000000004820000-0x000000000492C000-memory.dmp

Filesize
1.0MB

Download
memory/2976-3-0x00000000741B0000-0x000000007489E000-memory.dmp

Filesize
6.9MB

Download
memory/2976-2-0x00000000008F0000-0x00000000008FA000-memory.dmp

Filesize
40KB

Download
memory/2976-1-0x0000000000B60000-0x0000000000FB2000-memory.dmp

Filesize
4.3MB

Download